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openssl/crypto/evp/ctrl_params_translate.c
Rich Salz b0aae91324 Remove RSA SSLv23 padding mode 
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14248)
2021-03-01 10:56:12 +01:00

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/*
* Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/*
* Some ctrls depend on deprecated functionality. We trust that this is
* functionality that remains internally even when 'no-deprecated' is
* configured. When we drop #legacy EVP_PKEYs, this source should be
* possible to drop as well.
*/
#include "internal/deprecated.h"
#include <string.h>
/* The following includes get us all the EVP_PKEY_CTRL macros */
#include <openssl/dh.h>
#include <openssl/dsa.h>
#include <openssl/ec.h>
#include <openssl/rsa.h>
#include <openssl/kdf.h>
/* This include gets us all the OSSL_PARAM key string macros */
#include <openssl/core_names.h>
#include <openssl/err.h>
#include <openssl/evperr.h>
#include <openssl/params.h>
#include "internal/nelem.h"
#include "internal/cryptlib.h"
#include "internal/ffc.h"
#include "crypto/evp.h"
#include "crypto/dh.h"
#include "crypto/ec.h"
#include "e_os.h" /* strcasecmp() for Windows */
struct translation_ctx_st; /* Forwarding */
struct translation_st; /* Forwarding */
/*
* The fixup_args functions are called with the following parameters:
*
* |state| The state we're called in, explained further at the
* end of this comment.
* |translation| The translation item, to be pilfered for data as
* necessary.
* |ctx| The translation context, which contains copies of
* the following arguments, applicable according to
* the caller. All of the attributes in this context
* may be freely modified by the fixup_args function.
* For cleanup, call cleanup_translation_ctx().
*
* The |state| tells the fixup_args function something about the caller and
* what they may expect:
*
* PKEY The fixup_args function has been called
* from an EVP_PKEY payload getter / setter,
* and is fully responsible for getting or
* setting the requested data. With this
* state, the fixup_args function is expected
* to use or modify |*params|, depending on
* |action_type|.
*
* PRE_CTRL_TO_PARAMS The fixup_args function has been called
* POST_CTRL_TO_PARAMS from EVP_PKEY_CTX_ctrl(), to help with
* translating the ctrl data to an OSSL_PARAM
* element or back. The calling sequence is
* as follows:
*
* 1. fixup_args(PRE_CTRL_TO_PARAMS, ...)
* 2. EVP_PKEY_CTX_set_params() or
* EVP_PKEY_CTX_get_params()
* 3. fixup_args(POST_CTRL_TO_PARAMS, ...)
*
* With the PRE_CTRL_TO_PARAMS state, the
* fixup_args function is expected to modify
* the passed |*params| in whatever way
* necessary, when |action_type == SET|.
* With the POST_CTRL_TO_PARAMS state, the
* fixup_args function is expected to modify
* the passed |p2| in whatever way necessary,
* when |action_type == GET|.
*
* The return value from the fixup_args call
* with the POST_CTRL_TO_PARAMS state becomes
* the return value back to EVP_PKEY_CTX_ctrl().
*
* CLEANUP_CTRL_TO_PARAMS The cleanup_args functions has been called
* from EVP_PKEY_CTX_ctrl(), to clean up what
* the fixup_args function has done, if needed.
*
*
* PRE_CTRL_STR_TO_PARAMS The fixup_args function has been called
* POST_CTRL_STR_TO_PARAMS from EVP_PKEY_CTX_ctrl_str(), to help with
* translating the ctrl_str data to an
* OSSL_PARAM element or back. The calling
* sequence is as follows:
*
* 1. fixup_args(PRE_CTRL_STR_TO_PARAMS, ...)
* 2. EVP_PKEY_CTX_set_params() or
* EVP_PKEY_CTX_get_params()
* 3. fixup_args(POST_CTRL_STR_TO_PARAMS, ...)
*
* With the PRE_CTRL_STR_TO_PARAMS state,
* the fixup_args function is expected to
* modify the passed |*params| in whatever
* way necessary, when |action_type == SET|.
* With the POST_CTRL_STR_TO_PARAMS state,
* the fixup_args function is only expected
* to return a value.
*
* CLEANUP_CTRL_STR_TO_PARAMS The cleanup_args functions has been called
* from EVP_PKEY_CTX_ctrl_str(), to clean up
* what the fixup_args function has done, if
* needed.
*
* PRE_PARAMS_TO_CTRL The fixup_args function has been called
* POST_PARAMS_TO_CTRL from EVP_PKEY_CTX_get_params() or
* EVP_PKEY_CTX_set_params(), to help with
* translating the OSSL_PARAM data to the
* corresponding EVP_PKEY_CTX_ctrl() arguments
* or the other way around. The calling
* sequence is as follows:
*
* 1. fixup_args(PRE_PARAMS_TO_CTRL, ...)
* 2. EVP_PKEY_CTX_ctrl()
* 3. fixup_args(POST_PARAMS_TO_CTRL, ...)
*
* With the PRE_PARAMS_TO_CTRL state, the
* fixup_args function is expected to modify
* the passed |p1| and |p2| in whatever way
* necessary, when |action_type == SET|.
* With the POST_PARAMS_TO_CTRL state, the
* fixup_args function is expected to
* modify the passed |*params| in whatever
* way necessary, when |action_type == GET|.
*
* CLEANUP_PARAMS_TO_CTRL The cleanup_args functions has been called
* from EVP_PKEY_CTX_get_params() or
* EVP_PKEY_CTX_set_params(), to clean up what
* the fixup_args function has done, if needed.
*/
enum state {
PKEY,
PRE_CTRL_TO_PARAMS, POST_CTRL_TO_PARAMS, CLEANUP_CTRL_TO_PARAMS,
PRE_CTRL_STR_TO_PARAMS, POST_CTRL_STR_TO_PARAMS, CLEANUP_CTRL_STR_TO_PARAMS,
PRE_PARAMS_TO_CTRL, POST_PARAMS_TO_CTRL, CLEANUP_PARAMS_TO_CTRL,
};
enum action {
NONE = 0, GET = 1, SET = 2
};
typedef int fixup_args_fn(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx);
typedef int cleanup_args_fn(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx);
struct translation_ctx_st {
/*
* The EVP_PKEY_CTX, for calls on that structure, to be pilfered for data
* as necessary.
*/
EVP_PKEY_CTX *pctx;
/*
* The action type (GET or SET). This may be 0 in some cases, and should
* be modified by the fixup_args function in the PRE states. It should
* otherwise remain untouched once set.
*/
enum action action_type;
/*
* For ctrl to params translation, the actual ctrl command number used.
* For params to ctrl translation, 0.
*/
int ctrl_cmd;
/*
* For ctrl_str to params translation, the actual ctrl command string
* used. In this case, the (string) value is always passed as |p2|.
* For params to ctrl translation, this is NULL. Along with it is also
* and indicator whether it matched |ctrl_str| or |ctrl_hexstr| in the
* translation item.
*/
const char *ctrl_str;
int ishex;
/* the ctrl-style int argument. */
int p1;
/* the ctrl-style void* argument. */
void *p2;
/* a size, for passing back the |p2| size where applicable */
size_t sz;
/* pointer to the OSSL_PARAM-style params array. */
OSSL_PARAM *params;
/*-
* The following are used entirely internally by the fixup_args functions
* and should not be touched by the callers, at all.
*/
/*
* Copy of the ctrl-style void* argument, if the the fixup_args function
* needs to manipulate |p2| but wants to remember original.
*/
void *orig_p2;
/* Diverse types of storage for the needy. */
char name_buf[OSSL_MAX_NAME_SIZE];
void *allocated_buf;
void *bufp;
size_t buflen;
};
struct translation_st {
/*-
* What this table item does.
*
* If the item has this set to 0, it means that both GET and SET are
* supported, and |fixup_args| will determine which it is. This is to
* support translations of ctrls where the action type depends on the
* value of |p1| or |p2| (ctrls are really bi-directional, but are
* seldom used that way).
*
* This can be also used in the lookup template when it looks up by
* OSSL_PARAM key, to indicate if a setter or a getter called.
*/
enum action action_type;
/*-
* Conditions, for params->ctrl translations.
*
* In table item, |keytype1| and |keytype2| can be set to -1 to indicate
* that this item supports all key types (or rather, that |fixup_args|
* will check and return an error if it's not supported).
* Any of these may be set to 0 to indicate that they are unset.
*/
int keytype1; /* The EVP_PKEY_XXX type, i.e. NIDs. #legacy */
int keytype2; /* Another EVP_PKEY_XXX type, used for aliases */
int optype; /* The operation type */
/*
* Lookup and translation attributes
*
* |ctrl_num|, |ctrl_str|, |ctrl_hexstr| and |param_key| are lookup
* attributes.
*
* |ctrl_num| may be 0 or that |param_key| may be NULL in the table item,
* but not at the same time. If they are, they are simply not used for
* lookup.
* When |ctrl_num| == 0, no ctrl will be called. Likewise, when
* |param_key| == NULL, no OSSL_PARAM setter/getter will be called.
* In that case the treatment of the translation item relies entirely on
* |fixup_args|, which is then assumed to have side effects.
*
* As a special case, it's possible to set |ctrl_hexstr| and assign NULL
* to |ctrl_str|. That will signal to default_fixup_args() that the
* value must always be interpreted as hex.
*/
int ctrl_num; /* EVP_PKEY_CTRL_xxx */
const char *ctrl_str; /* The corresponding ctrl string */
const char *ctrl_hexstr; /* The alternative "hex{str}" ctrl string */
const char *param_key; /* The corresponding OSSL_PARAM key */
/*
* The appropriate OSSL_PARAM data type. This may be 0 to indicate that
* this OSSL_PARAM may have more than one data type, depending on input
* material. In this case, |fixup_args| is expected to check and handle
* it.
*/
unsigned int param_data_type;
/*
* Fixer functions
*
* |fixup_args| is always called before (for SET) or after (for GET)
* the actual ctrl / OSSL_PARAM function.
*/
fixup_args_fn *fixup_args;
};
/*-
* Fixer function implementations
* ==============================
*/
/*
* default_check isn't a fixer per se, but rather a helper function to
* perform certain standard checks.
*/
static int default_check(enum state state,
const struct translation_st *translation,
const struct translation_ctx_st *ctx)
{
switch (state) {
default:
break;
case PRE_CTRL_TO_PARAMS:
if (!ossl_assert(translation != NULL)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (!ossl_assert(translation->param_key != 0)
|| !ossl_assert(translation->param_data_type != 0)) {
ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
return -1;
}
break;
case PRE_CTRL_STR_TO_PARAMS:
/*
* For ctrl_str to params translation, we allow direct use of
* OSSL_PARAM keys as ctrl_str keys. Therefore, it's possible that
* we end up with |translation == NULL|, which is fine. The fixup
* function will have to deal with it carefully.
*/
if (translation != NULL) {
if (!ossl_assert(translation->action_type != GET)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (!ossl_assert(translation->param_key != NULL)
|| !ossl_assert(translation->param_data_type != 0)) {
ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
return 0;
}
}
break;
case PRE_PARAMS_TO_CTRL:
case POST_PARAMS_TO_CTRL:
if (!ossl_assert(translation != NULL)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (!ossl_assert(translation->ctrl_num != 0)
|| !ossl_assert(translation->param_data_type != 0)) {
ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
return -1;
}
}
/* Nothing else to check */
return 1;
}
/*-
* default_fixup_args fixes up all sorts of arguments, governed by the
* diverse attributes in the translation item. It covers all "standard"
* base ctrl functionality, meaning it can handle basic conversion of
* data between p1+p2 (SET) or return value+p2 (GET) as long as the values
* don't have extra semantics (such as NIDs, OIDs, that sort of stuff).
* Extra semantics must be handled via specific fixup_args functions.
*
* The following states and action type combinations have standard handling
* done in this function:
*
* PRE_CTRL_TO_PARAMS, 0 - ERROR. action type must be
* determined by a fixup function.
* PRE_CTRL_TO_PARAMS, SET | GET - |p1| and |p2| are converted to an
* OSSL_PARAM according to the data
* type given in |translattion|.
* For OSSL_PARAM_UNSIGNED_INTEGER,
* a BIGNUM passed as |p2| is accepted.
* POST_CTRL_TO_PARAMS, GET - If the OSSL_PARAM data type is a
* STRING or PTR type, |p1| is set
* to the OSSL_PARAM return size, and
* |p2| is set to the string.
* PRE_CTRL_STR_TO_PARAMS, !SET - ERROR. That combination is not
* supported.
* PRE_CTRL_STR_TO_PARAMS, SET - |p2| is taken as a string, and is
* converted to an OSSL_PARAM in a
* standard manner, guided by the
* param key and data type from
* |translation|.
* PRE_PARAMS_TO_CTRL, SET - the OSSL_PARAM is converted to
* |p1| and |p2| according to the
* data type given in |translation|
* For OSSL_PARAM_UNSIGNED_INTEGER,
* if |p2| is non-NULL, then |*p2|
* is assigned a BIGNUM, otherwise
* |p1| is assigned an unsigned int.
* POST_PARAMS_TO_CTRL, GET - |p1| and |p2| are converted to
* an OSSL_PARAM, in the same manner
* as for the combination of
* PRE_CTRL_TO_PARAMS, SET.
*/
static int default_fixup_args(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) < 0)
return ret;
switch (state) {
default:
/* For states this function should never have been called with */
ERR_raise_data(ERR_LIB_EVP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
"[action:%d, state:%d]", ctx->action_type, state);
return 0;
/*
* PRE_CTRL_TO_PARAMS and POST_CTRL_TO_PARAMS handle ctrl to params
* translations. PRE_CTRL_TO_PARAMS is responsible for preparing
* |*params|, and POST_CTRL_TO_PARAMS is responsible for bringing the
* result back to |*p2| and the return value.
*/
case PRE_CTRL_TO_PARAMS:
/* This is ctrl to params translation, so we need an OSSL_PARAM key */
if (ctx->action_type == NONE) {
/*
* No action type is an error here. That's a case for a
* special fixup function.
*/
ERR_raise_data(ERR_LIB_EVP, ERR_R_UNSUPPORTED,
"[action:%d, state:%d]", ctx->action_type, state);
return 0;
}
if (translation->optype != 0) {
if ((EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx)
&& ctx->pctx->op.sig.sigprovctx == NULL)
|| (EVP_PKEY_CTX_IS_DERIVE_OP(ctx->pctx)
&& ctx->pctx->op.kex.exchprovctx == NULL)
|| (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx->pctx)
&& ctx->pctx->op.ciph.ciphprovctx == NULL)
|| (EVP_PKEY_CTX_IS_KEM_OP(ctx->pctx)
&& ctx->pctx->op.encap.kemprovctx == NULL)
/*
* The following may be unnecessary, but we have them
* for good measure...
*/
|| (EVP_PKEY_CTX_IS_GEN_OP(ctx->pctx)
&& ctx->pctx->op.keymgmt.genctx == NULL)
|| (EVP_PKEY_CTX_IS_FROMDATA_OP(ctx->pctx)
&& ctx->pctx->op.keymgmt.genctx == NULL)) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
return -2;
}
}
/*
* OSSL_PARAM_construct_TYPE() works equally well for both SET and GET.
*/
switch (translation->param_data_type) {
case OSSL_PARAM_INTEGER:
*ctx->params = OSSL_PARAM_construct_int(translation->param_key,
&ctx->p1);
break;
case OSSL_PARAM_UNSIGNED_INTEGER:
/*
* BIGNUMs are passed via |p2|. For all ctrl's that just want
* to pass a simple integer via |p1|, |p2| is expected to be
* NULL.
*
* Note that this allocates a buffer, which the cleanup function
* must deallocate.
*/
if (ctx->p2 != NULL) {
if (ctx->action_type == SET) {
ctx->buflen = BN_num_bytes(ctx->p2);
if ((ctx->allocated_buf =
OPENSSL_malloc(ctx->buflen)) == NULL) {
ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
return 0;
}
if (!BN_bn2nativepad(ctx->p2,
ctx->allocated_buf, ctx->buflen)) {
OPENSSL_free(ctx->allocated_buf);
ctx->allocated_buf = NULL;
return 0;
}
*ctx->params =
OSSL_PARAM_construct_BN(translation->param_key,
ctx->allocated_buf,
ctx->buflen);
} else {
/*
* No support for getting a BIGNUM by ctrl, this needs
* fixup_args function support.
*/
ERR_raise_data(ERR_LIB_EVP, ERR_R_UNSUPPORTED,
"[action:%d, state:%d] trying to get a "
"BIGNUM via ctrl call",
ctx->action_type, state);
return 0;
}
} else {
*ctx->params =
OSSL_PARAM_construct_uint(translation->param_key,
(unsigned int *)&ctx->p1);
}
break;
case OSSL_PARAM_UTF8_STRING:
*ctx->params =
OSSL_PARAM_construct_utf8_string(translation->param_key,
ctx->p2, (size_t)ctx->p1);
break;
case OSSL_PARAM_UTF8_PTR:
*ctx->params =
OSSL_PARAM_construct_utf8_ptr(translation->param_key,
ctx->p2, (size_t)ctx->p1);
break;
case OSSL_PARAM_OCTET_STRING:
*ctx->params =
OSSL_PARAM_construct_octet_string(translation->param_key,
ctx->p2, (size_t)ctx->p1);
break;
case OSSL_PARAM_OCTET_PTR:
*ctx->params =
OSSL_PARAM_construct_octet_ptr(translation->param_key,
ctx->p2, (size_t)ctx->p1);
break;
}
break;
case POST_CTRL_TO_PARAMS:
/*
* Because EVP_PKEY_CTX_ctrl() returns the length of certain objects
* as its return value, we need to ensure that we do it here as well,
* for the OSSL_PARAM data types where this makes sense.
*/
if (ctx->action_type == GET) {
switch (translation->param_data_type) {
case OSSL_PARAM_UTF8_STRING:
case OSSL_PARAM_UTF8_PTR:
case OSSL_PARAM_OCTET_STRING:
case OSSL_PARAM_OCTET_PTR:
ctx->p1 = (int)ctx->params[0].return_size;
break;
}
}
break;
/*
* PRE_CTRL_STR_TO_PARAMS and POST_CTRL_STR_TO_PARAMS handle ctrl_str to
* params translations. PRE_CTRL_TO_PARAMS is responsible for preparing
* |*params|, and POST_CTRL_TO_PARAMS currently has nothing to do, since
* there's no support for getting data via ctrl_str calls.
*/
case PRE_CTRL_STR_TO_PARAMS:
{
/* This is ctrl_str to params translation */
const char *tmp_ctrl_str = ctx->ctrl_str;
const char *orig_ctrl_str = ctx->ctrl_str;
const char *orig_value = ctx->p2;
const OSSL_PARAM *settable = NULL;
int exists = 0;
/* Only setting is supported here */
if (ctx->action_type != SET) {
ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
"[action:%d, state:%d] only setting allowed",
ctx->action_type, state);
return 0;
}
/*
* If no translation exists, we simply pass the control string
* unmodified.
*/
if (translation != NULL) {
tmp_ctrl_str = ctx->ctrl_str = translation->param_key;
if (ctx->ishex) {
strcpy(ctx->name_buf, "hex");
if (OPENSSL_strlcat(ctx->name_buf, tmp_ctrl_str,
sizeof(ctx->name_buf)) <= 3) {
ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
return -1;
}
tmp_ctrl_str = ctx->name_buf;
}
}
settable = EVP_PKEY_CTX_settable_params(ctx->pctx);
if (!OSSL_PARAM_allocate_from_text(ctx->params, settable,
tmp_ctrl_str,
ctx->p2, strlen(ctx->p2),
&exists)) {
if (!exists) {
ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
"[action:%d, state:%d] name=%s, value=%s",
ctx->action_type, state,
orig_ctrl_str, orig_value);
return -2;
}
return 0;
}
ctx->allocated_buf = ctx->params->data;
ctx->buflen = ctx->params->data_size;
}
break;
case POST_CTRL_STR_TO_PARAMS:
/* Nothing to be done */
break;
/*
* PRE_PARAMS_TO_CTRL and POST_PARAMS_TO_CTRL handle params to ctrl
* translations. PRE_PARAMS_TO_CTRL is responsible for preparing
* |p1| and |p2|, and POST_PARAMS_TO_CTRL is responsible for bringing
* the EVP_PKEY_CTX_ctrl() return value (passed as |p1|) and |p2| back
* to |*params|.
*
* PKEY is treated just like POST_PARAMS_TO_CTRL, making it easy
* for the related fixup_args functions to just set |p1| and |p2|
* appropriately and leave it to this section of code to fix up
* |ctx->params| accordingly.
*/
case PKEY:
case POST_PARAMS_TO_CTRL:
ret = ctx->p1;
/* FALLTHRU */
case PRE_PARAMS_TO_CTRL:
{
/* This is params to ctrl translation */
if (state == PRE_PARAMS_TO_CTRL && ctx->action_type == SET) {
/* For the PRE state, only setting needs some work to be done */
/* When setting, we populate |p1| and |p2| from |*params| */
switch (translation->param_data_type) {
case OSSL_PARAM_INTEGER:
return OSSL_PARAM_get_int(ctx->params, &ctx->p1);
case OSSL_PARAM_UNSIGNED_INTEGER:
if (ctx->p2 != NULL) {
/* BIGNUM passed down with p2 */
if (!OSSL_PARAM_get_BN(ctx->params, ctx->p2))
return 0;
} else {
/* Normal C unsigned int passed down */
if (!OSSL_PARAM_get_uint(ctx->params,
(unsigned int *)&ctx->p1))
return 0;
}
return 1;
case OSSL_PARAM_UTF8_STRING:
return OSSL_PARAM_get_utf8_string(ctx->params,
ctx->p2, ctx->sz);
case OSSL_PARAM_OCTET_STRING:
return OSSL_PARAM_get_octet_string(ctx->params,
ctx->p2, ctx->sz,
&ctx->sz);
case OSSL_PARAM_OCTET_PTR:
return OSSL_PARAM_get_octet_ptr(ctx->params,
ctx->p2, &ctx->sz);
default:
ERR_raise_data(ERR_LIB_EVP, ERR_R_UNSUPPORTED,
"[action:%d, state:%d] "
"unknown OSSL_PARAM data type %d",
ctx->action_type, state,
translation->param_data_type);
return 0;
}
} else if ((state == POST_PARAMS_TO_CTRL || state == PKEY)
&& ctx->action_type == GET) {
/* For the POST state, only getting needs some work to be done */
/* When getting, we populate |*params| from |p1| and |p2| */
switch (translation->param_data_type) {
case OSSL_PARAM_INTEGER:
return OSSL_PARAM_set_int(ctx->params, ctx->p1);
case OSSL_PARAM_UNSIGNED_INTEGER:
if (ctx->p2 != NULL) {
/* BIGNUM passed back */
return OSSL_PARAM_set_BN(ctx->params, ctx->p2);
} else {
/* Normal C unsigned int passed back */
return OSSL_PARAM_set_uint(ctx->params,
(unsigned int)ctx->p1);
}
return 0;
case OSSL_PARAM_UTF8_STRING:
return OSSL_PARAM_set_utf8_string(ctx->params, ctx->p2);
case OSSL_PARAM_OCTET_STRING:
return OSSL_PARAM_set_octet_string(ctx->params, ctx->p2,
(size_t)ctx->p1);
case OSSL_PARAM_OCTET_PTR:
return OSSL_PARAM_set_octet_ptr(ctx->params, ctx->p2,
(size_t)ctx->p1);
default:
ERR_raise_data(ERR_LIB_EVP, ERR_R_UNSUPPORTED,
"[action:%d, state:%d] "
"unsupported OSSL_PARAM data type %d",
ctx->action_type, state,
translation->param_data_type);
return 0;
}
}
}
/* Any other combination is simply pass-through */
break;
}
return ret;
}
static int
cleanup_translation_ctx(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
if (ctx->allocated_buf != NULL)
OPENSSL_free(ctx->allocated_buf);
ctx->allocated_buf = NULL;
return 1;
}
/*
* fix_cipher_md fixes up an EVP_CIPHER / EVP_MD to its name on SET,
* and cipher / md name to EVP_MD on GET.
*/
static const char *get_cipher_name(void *cipher)
{
return EVP_CIPHER_name(cipher);
}
static const char *get_md_name(void *md)
{
return EVP_MD_name(md);
}
static const void *get_cipher_by_name(OSSL_LIB_CTX *libctx, const char *name)
{
return evp_get_cipherbyname_ex(libctx, name);
}
static const void *get_md_by_name(OSSL_LIB_CTX *libctx, const char *name)
{
return evp_get_digestbyname_ex(libctx, name);
}
static int fix_cipher_md(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx,
const char *(*get_name)(void *algo),
const void *(*get_algo_by_name)(OSSL_LIB_CTX *libctx,
const char *name))
{
int ret = 1;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == GET) {
/*
* |ctx->p2| contains the address to an EVP_CIPHER or EVP_MD pointer
* to be filled in. We need to remember it, then make |ctx->p2|
* point at a buffer to be filled in with the name, and |ctx->p1|
* with its size. default_fixup_args() will take care of the rest
* for us.
*/
ctx->orig_p2 = ctx->p2;
ctx->p2 = ctx->name_buf;
ctx->p1 = sizeof(ctx->name_buf);
} else if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == SET) {
/*
* In different parts of OpenSSL, this ctrl command is used
* differently. Some calls pass a NID as p1, others pass an
* EVP_CIPHER pointer as p2...
*/
ctx->p2 = (char *)(ctx->p2 == NULL
? OBJ_nid2sn(ctx->p1)
: get_name(ctx->p2));
ctx->p1 = strlen(ctx->p2);
} else if (state == POST_PARAMS_TO_CTRL && ctx->action_type == GET) {
ctx->p2 = (ctx->p2 == NULL ? "" : (char *)get_name(ctx->p2));
ctx->p1 = strlen(ctx->p2);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == POST_CTRL_TO_PARAMS && ctx->action_type == GET) {
/*
* Here's how we re-use |ctx->orig_p2| that was set in the
* PRE_CTRL_TO_PARAMS state above.
*/
*(void **)ctx->orig_p2 =
(void *)get_algo_by_name(ctx->pctx->libctx, ctx->p2);
ctx->p1 = 1;
} else if (state == PRE_PARAMS_TO_CTRL && ctx->action_type == SET) {
ctx->p2 = (void *)get_algo_by_name(ctx->pctx->libctx, ctx->p2);
ctx->p1 = 0;
}
return ret;
}
static int fix_cipher(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
return fix_cipher_md(state, translation, ctx,
get_cipher_name, get_cipher_by_name);
}
static int fix_md(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
return fix_cipher_md(state, translation, ctx,
get_md_name, get_md_by_name);
}
static int fix_distid_len(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret = default_fixup_args(state, translation, ctx);
if (ret > 0) {
ret = 0;
if ((state == POST_CTRL_TO_PARAMS
|| state == POST_CTRL_STR_TO_PARAMS) && ctx->action_type == GET) {
*(size_t *)ctx->p2 = ctx->sz;
ret = 1;
}
}
return ret;
}
struct kdf_type_map_st {
int kdf_type_num;
const char *kdf_type_str;
};
static int fix_kdf_type(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx,
const struct kdf_type_map_st *kdf_type_map)
{
/*
* The EVP_PKEY_CTRL_DH_KDF_TYPE ctrl command is a bit special, in
* that it's used both for setting a value, and for getting it, all
* depending on the value if |p1|; if |p1| is -2, the backend is
* supposed to place the current kdf type in |p2|, and if not, |p1|
* is interpreted as the new kdf type.
*/
int ret = 0;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_CTRL_TO_PARAMS) {
/*
* In |translations|, the initial value for |ctx->action_type| must
* be NONE.
*/
if (!ossl_assert(ctx->action_type == NONE))
return 0;
/* The action type depends on the value of *p1 */
if (ctx->p1 == -2) {
/*
* The OSSL_PARAMS getter needs space to store a copy of the kdf
* type string. We use |ctx->name_buf|, which has enough space
* allocated.
*
* (this wouldn't be needed if the OSSL_xxx_PARAM_KDF_TYPE
* had the data type OSSL_PARAM_UTF8_PTR)
*/
ctx->p2 = ctx->name_buf;
ctx->p1 = sizeof(ctx->name_buf);
ctx->action_type = GET;
} else {
ctx->action_type = SET;
}
}
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if ((state == PRE_CTRL_TO_PARAMS && ctx->action_type == SET)
|| (state == POST_PARAMS_TO_CTRL && ctx->action_type == GET)) {
ret = -2;
/* Convert KDF type numbers to strings */
for (; kdf_type_map->kdf_type_str != NULL; kdf_type_map++)
if (ctx->p1 == kdf_type_map->kdf_type_num) {
ctx->p2 = (char *)kdf_type_map->kdf_type_str;
ret = 1;
break;
}
if (ret <= 0)
goto end;
ctx->p1 = strlen(ctx->p2);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if ((state == POST_CTRL_TO_PARAMS && ctx->action_type == GET)
|| (state == PRE_PARAMS_TO_CTRL && ctx->action_type == SET)) {
ctx->p1 = ret = -1;
/* Convert KDF type strings to numbers */
for (; kdf_type_map->kdf_type_str != NULL; kdf_type_map++)
if (strcasecmp(ctx->p2, kdf_type_map->kdf_type_str) == 0) {
ctx->p1 = kdf_type_map->kdf_type_num;
ret = 1;
break;
}
ctx->p2 = NULL;
} else if (state == PRE_PARAMS_TO_CTRL && ctx->action_type == GET) {
ctx->p1 = -2;
}
end:
return ret;
}
/* EVP_PKEY_CTRL_DH_KDF_TYPE */
static int fix_dh_kdf_type(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
static const struct kdf_type_map_st kdf_type_map[] = {
{ EVP_PKEY_DH_KDF_NONE, "" },
{ EVP_PKEY_DH_KDF_X9_42, OSSL_KDF_NAME_X942KDF_ASN1 },
{ 0, NULL }
};
return fix_kdf_type(state, translation, ctx, kdf_type_map);
}
/* EVP_PKEY_CTRL_EC_KDF_TYPE */
static int fix_ec_kdf_type(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
static const struct kdf_type_map_st kdf_type_map[] = {
{ EVP_PKEY_ECDH_KDF_NONE, "" },
{ EVP_PKEY_ECDH_KDF_X9_63, OSSL_KDF_NAME_X963KDF },
{ 0, NULL }
};
return fix_kdf_type(state, translation, ctx, kdf_type_map);
}
/* EVP_PKEY_CTRL_DH_KDF_OID, EVP_PKEY_CTRL_GET_DH_KDF_OID, ...??? */
static int fix_oid(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if ((state == PRE_CTRL_TO_PARAMS && ctx->action_type == SET)
|| (state == POST_PARAMS_TO_CTRL && ctx->action_type == GET)) {
/*
* We're translating from ctrl to params and setting the OID, or
* we're translating from params to ctrl and getting the OID.
* Either way, |ctx->p2| points at an ASN1_OBJECT, and needs to have
* that replaced with the corresponding name.
* default_fixup_args() will then be able to convert that to the
* corresponding OSSL_PARAM.
*/
ctx->p2 = (char *)OBJ_nid2sn(OBJ_obj2nid(ctx->p2));
ctx->p1 = 0; /* let default_fixup_args() figure out the length */
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if ((state == PRE_PARAMS_TO_CTRL && ctx->action_type == SET)
|| (state == POST_CTRL_TO_PARAMS && ctx->action_type == GET)) {
/*
* We're translating from ctrl to params and setting the OID name,
* or we're translating from params to ctrl and getting the OID
* name. Either way, default_fixup_args() has placed the OID name
* in |ctx->p2|, all we need to do now is to replace that with the
* corresponding ASN1_OBJECT.
*/
ctx->p2 = (ASN1_OBJECT *)OBJ_txt2obj(ctx->p2, 0);
}
return ret;
}
/* EVP_PKEY_CTRL_DH_NID, ...??? */
static int fix_dh_nid(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
/* This is currently only settable */
if (ctx->action_type != SET)
return 0;
if (state == PRE_CTRL_TO_PARAMS) {
ctx->p2 = (char *)ossl_ffc_named_group_get_name
(ossl_ffc_uid_to_dh_named_group(ctx->p1));
ctx->p1 = 0;
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_PARAMS_TO_CTRL) {
ctx->p1 =
ossl_ffc_named_group_get_uid(ossl_ffc_name_to_dh_named_group(ctx->p2));
ctx->p2 = NULL;
}
return ret;
}
/* EVP_PKEY_CTRL_DH_PARAMGEN_TYPE */
static int fix_dh_paramgen_type(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
/* This is currently only settable */
if (ctx->action_type != SET)
return 0;
if (state == PRE_CTRL_TO_PARAMS) {
ctx->p2 = (char *)ossl_dh_gen_type_id2name(ctx->p1);
ctx->p1 = 0;
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_PARAMS_TO_CTRL) {
ctx->p1 = ossl_dh_gen_type_name2id(ctx->p2);
ctx->p2 = NULL;
}
return ret;
}
/* EVP_PKEY_CTRL_EC_PARAM_ENC */
static int fix_ec_param_enc(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
/* This is currently only settable */
if (ctx->action_type != SET)
return 0;
if (state == PRE_CTRL_TO_PARAMS) {
switch (ctx->p1) {
case OPENSSL_EC_EXPLICIT_CURVE:
ctx->p2 = OSSL_PKEY_EC_ENCODING_EXPLICIT;
break;
case OPENSSL_EC_NAMED_CURVE:
ctx->p2 = OSSL_PKEY_EC_ENCODING_GROUP;
break;
default:
ret = -2;
goto end;
}
ctx->p1 = 0;
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_PARAMS_TO_CTRL) {
if (strcmp(ctx->p2, OSSL_PKEY_EC_ENCODING_EXPLICIT) == 0)
ctx->p1 = OPENSSL_EC_EXPLICIT_CURVE;
else if (strcmp(ctx->p2, OSSL_PKEY_EC_ENCODING_GROUP) == 0)
ctx->p1 = OPENSSL_EC_NAMED_CURVE;
else
ctx->p1 = ret = -2;
ctx->p2 = NULL;
}
end:
if (ret == -2)
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return ret;
}
/* EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID */
static int fix_ec_paramgen_curve_nid(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
/* This is currently only settable */
if (ctx->action_type != SET)
return 0;
if (state == PRE_CTRL_TO_PARAMS) {
ctx->p2 = (char *)OBJ_nid2sn(ctx->p1);
ctx->p1 = 0;
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_PARAMS_TO_CTRL) {
ctx->p1 = OBJ_sn2nid(ctx->p2);
ctx->p2 = NULL;
}
return ret;
}
/* EVP_PKEY_CTRL_EC_ECDH_COFACTOR */
static int fix_ecdh_cofactor(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
/*
* The EVP_PKEY_CTRL_EC_ECDH_COFACTOR ctrl command is a bit special, in
* that it's used both for setting a value, and for getting it, all
* depending on the value if |ctx->p1|; if |ctx->p1| is -2, the backend is
* supposed to place the current cofactor mode in |ctx->p2|, and if not,
* |ctx->p1| is interpreted as the new cofactor mode.
*/
int ret = 0;
if (state == PRE_CTRL_TO_PARAMS) {
/*
* The initial value for |ctx->action_type| must be zero.
* evp_pkey_ctrl_to_params() takes it from the translation item.
*/
if (!ossl_assert(ctx->action_type == NONE))
return 0;
/* The action type depends on the value of ctx->p1 */
if (ctx->p1 == -2)
ctx->action_type = GET;
else
ctx->action_type = SET;
} else if (state == PRE_CTRL_STR_TO_PARAMS) {
ctx->action_type = SET;
} else if (state == PRE_PARAMS_TO_CTRL) {
/* The initial value for |ctx->action_type| must not be zero. */
if (!ossl_assert(ctx->action_type != NONE))
return 0;
}
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == SET) {
if (ctx->p1 < -1 || ctx->p1 > 1) {
/* Uses the same return value of pkey_ec_ctrl() */
return -2;
}
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if (state == POST_CTRL_TO_PARAMS && ctx->action_type == GET) {
if (ctx->p1 < 0 || ctx->p1 > 1) {
/*
* The provider should return either 0 or 1, any other value is a
* provider error.
*/
ctx->p1 = ret = -1;
}
} else if (state == PRE_PARAMS_TO_CTRL && ctx->action_type == GET) {
ctx->p1 = -2;
}
return ret;
}
/* EVP_PKEY_CTRL_RSA_PADDING, EVP_PKEY_CTRL_GET_RSA_PADDING */
static int fix_rsa_padding_mode(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
static const OSSL_ITEM str_value_map[] = {
{ RSA_PKCS1_PADDING, "pkcs1" },
{ RSA_NO_PADDING, "none" },
{ RSA_PKCS1_OAEP_PADDING, "oaep" },
{ RSA_PKCS1_OAEP_PADDING, "oeap" },
{ RSA_X931_PADDING, "x931" },
{ RSA_PKCS1_PSS_PADDING, "pss" },
/* Special case, will pass directly as an integer */
{ RSA_PKCS1_WITH_TLS_PADDING, NULL }
};
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == GET) {
/*
* EVP_PKEY_CTRL_GET_RSA_PADDING returns the padding mode in the
* weirdest way for a ctrl. Instead of doing like all other ctrls
* that return a simple, i.e. just have that as a return value,
* this particular ctrl treats p2 as the address for the int to be
* returned. We must therefore remember |ctx->p2|, then make
* |ctx->p2| point at a buffer to be filled in with the name, and
* |ctx->p1| with its size. default_fixup_args() will take care
* of the rest for us, along with the POST_CTRL_TO_PARAMS && GET
* code section further down.
*/
ctx->orig_p2 = ctx->p2;
ctx->p2 = ctx->name_buf;
ctx->p1 = sizeof(ctx->name_buf);
} else if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == SET) {
/*
* Ideally, we should use utf8 strings for the diverse padding modes.
* We only came here because someone called EVP_PKEY_CTX_ctrl(),
* though, and since that can reasonably be seen as legacy code
* that uses the diverse RSA macros for the padding mode, and we
* know that at least our providers can handle the numeric modes,
* we take the cheap route for now.
*
* The other solution would be to match |ctx->p1| against entries
* in str_value_map and pass the corresponding string. However,
* since we don't have a string for RSA_PKCS1_WITH_TLS_PADDING,
* we have to do this same hack at least for that one.
*
* Since the "official" data type for the RSA padding mode is utf8
* string, we cannot count on default_fixup_args(). Instead, we
* build the OSSL_PARAM item ourselves and return immediately.
*/
ctx->params[0] = OSSL_PARAM_construct_int(translation->param_key,
&ctx->p1);
return 1;
} else if (state == POST_PARAMS_TO_CTRL && ctx->action_type == GET) {
size_t i;
/*
* The EVP_PKEY_CTX_get_params() caller may have asked for a utf8
* string, or may have asked for an integer of some sort. If they
* ask for an integer, we respond directly. If not, we translate
* the response from the ctrl function into a string.
*/
switch (ctx->params->data_type) {
case OSSL_PARAM_INTEGER:
return OSSL_PARAM_get_int(ctx->params, &ctx->p1);
case OSSL_PARAM_UNSIGNED_INTEGER:
return OSSL_PARAM_get_uint(ctx->params, (unsigned int *)&ctx->p1);
default:
break;
}
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (ctx->p1 == (int)str_value_map[i].id)
break;
}
if (i == OSSL_NELEM(str_value_map)) {
ERR_raise_data(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE,
"[action:%d, state:%d] padding number %d",
ctx->action_type, state, ctx->p1);
return -2;
}
/*
* If we don't have a string, we can't do anything. The caller
* should have asked for a number...
*/
if (str_value_map[i].ptr == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
ctx->p2 = str_value_map[i].ptr;
ctx->p1 = strlen(ctx->p2);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if ((ctx->action_type == SET && state == PRE_PARAMS_TO_CTRL)
|| (ctx->action_type == GET && state == POST_CTRL_TO_PARAMS)) {
size_t i;
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (strcmp(ctx->p2, str_value_map[i].ptr) == 0)
break;
}
if (i == OSSL_NELEM(str_value_map)) {
ERR_raise_data(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE,
"[action:%d, state:%d] padding name %s",
ctx->action_type, state, ctx->p1);
ctx->p1 = ret = -2;
} else if (state == POST_CTRL_TO_PARAMS) {
/* EVP_PKEY_CTRL_GET_RSA_PADDING weirdness explained further up */
*(int *)ctx->orig_p2 = str_value_map[i].id;
} else {
ctx->p1 = str_value_map[i].id;
}
ctx->p2 = NULL;
}
return ret;
}
/* EVP_PKEY_CTRL_RSA_PSS_SALTLEN, EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN */
static int fix_rsa_pss_saltlen(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
static const OSSL_ITEM str_value_map[] = {
{ (unsigned int)RSA_PSS_SALTLEN_DIGEST, "digest" },
{ (unsigned int)RSA_PSS_SALTLEN_MAX, "max" },
{ (unsigned int)RSA_PSS_SALTLEN_AUTO, "auto" }
};
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if (state == PRE_CTRL_TO_PARAMS && ctx->action_type == GET) {
/*
* EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN returns the saltlen by filling
* in the int pointed at by p2. This is potentially as weird as
* the way EVP_PKEY_CTRL_GET_RSA_PADDING works, except that saltlen
* might be a negative value, so it wouldn't work as a legitimate
* return value.
* In any case, we must therefore remember |ctx->p2|, then make
* |ctx->p2| point at a buffer to be filled in with the name, and
* |ctx->p1| with its size. default_fixup_args() will take care
* of the rest for us, along with the POST_CTRL_TO_PARAMS && GET
* code section further down.
*/
ctx->orig_p2 = ctx->p2;
ctx->p2 = ctx->name_buf;
ctx->p1 = sizeof(ctx->name_buf);
} else if ((ctx->action_type == SET && state == PRE_CTRL_TO_PARAMS)
|| (ctx->action_type == GET && state == POST_PARAMS_TO_CTRL)) {
size_t i;
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (ctx->p1 == (int)str_value_map[i].id)
break;
}
if (i == OSSL_NELEM(str_value_map)) {
BIO_snprintf(ctx->name_buf, 5, "%d", ctx->p1);
} else {
strcpy(ctx->name_buf, str_value_map[i].ptr);
}
ctx->p2 = ctx->name_buf;
ctx->p1 = strlen(ctx->p2);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if ((ctx->action_type == SET && state == PRE_PARAMS_TO_CTRL)
|| (ctx->action_type == GET && state == POST_CTRL_TO_PARAMS)) {
size_t i;
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (strcmp(ctx->p2, str_value_map[i].ptr) == 0)
break;
}
if (i == OSSL_NELEM(str_value_map)) {
ctx->p1 = atoi(ctx->p2);
} else if (state == POST_CTRL_TO_PARAMS) {
/*
* EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN weirdness explained further
* up
*/
*(int *)ctx->orig_p2 = str_value_map[i].id;
} else {
ctx->p1 = (int)str_value_map[i].id;
}
ctx->p2 = NULL;
}
return ret;
}
/* EVP_PKEY_CTRL_HKDF_MODE */
static int fix_hkdf_mode(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
static const OSSL_ITEM str_value_map[] = {
{ EVP_KDF_HKDF_MODE_EXTRACT_AND_EXPAND, "EXTRACT_AND_EXPAND" },
{ EVP_KDF_HKDF_MODE_EXTRACT_ONLY, "EXTRACT_ONLY" },
{ EVP_KDF_HKDF_MODE_EXPAND_ONLY, "EXPAND_ONLY" }
};
int ret;
if ((ret = default_check(state, translation, ctx)) <= 0)
return ret;
if ((ctx->action_type == SET && state == PRE_CTRL_TO_PARAMS)
|| (ctx->action_type == GET && state == POST_PARAMS_TO_CTRL)) {
size_t i;
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (ctx->p1 == (int)str_value_map[i].id)
break;
}
if (i == OSSL_NELEM(str_value_map))
return 0;
ctx->p2 = str_value_map[i].ptr;
ctx->p1 = strlen(ctx->p2);
}
if ((ret = default_fixup_args(state, translation, ctx)) <= 0)
return ret;
if ((ctx->action_type == SET && state == PRE_PARAMS_TO_CTRL)
|| (ctx->action_type == GET && state == POST_CTRL_TO_PARAMS)) {
size_t i;
for (i = 0; i < OSSL_NELEM(str_value_map); i++) {
if (strcmp(ctx->p2, str_value_map[i].ptr) == 0)
break;
}
if (i == OSSL_NELEM(str_value_map))
return 0;
if (state == POST_CTRL_TO_PARAMS)
ret = str_value_map[i].id;
else
ctx->p1 = str_value_map[i].id;
ctx->p2 = NULL;
}
return 1;
}
static int hack_pkcs7_cms(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
int ret = 1;
/* Make sure that this has no further effect */
ctx->action_type = 0;
switch (state) {
case PRE_CTRL_TO_PARAMS:
/* TODO (3.0) Temporary hack, this should probe */
if (EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx->pctx), "RSASSA-PSS")) {
ERR_raise(ERR_LIB_EVP,
EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
ret = -2;
}
break;
case POST_CTRL_TO_PARAMS:
break;
default:
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
ret = -2;
break;
}
return ret;
}
/*-
* Payload getters
* ===============
*
* These all get the data they want, then call default_fixup_args() as
* a post-ctrl GET fixup. They all get NULL ctx, ctrl_cmd, ctrl_str,
* p1, sz
*/
/* Pilfering DH, DSA and EC_KEY */
static int get_payload_group_name(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
EVP_PKEY *pkey = ctx->p2;
ctx->p2 = NULL;
switch (EVP_PKEY_base_id(pkey)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
{
DH *dh = EVP_PKEY_get0_DH(pkey);
int uid = DH_get_nid(dh);
if (uid != NID_undef) {
const DH_NAMED_GROUP *dh_group =
ossl_ffc_uid_to_dh_named_group(uid);
ctx->p2 = (char *)ossl_ffc_named_group_get_name(dh_group);
}
}
break;
#endif
#ifndef OPENSSL_NO_EC
case EVP_PKEY_EC:
{
const EC_GROUP *grp =
EC_KEY_get0_group(EVP_PKEY_get0_EC_KEY(pkey));
int nid = NID_undef;
if (grp != NULL)
nid = EC_GROUP_get_curve_name(grp);
if (nid != NID_undef)
ctx->p2 = (char *)ossl_ec_curve_nid2name(nid);
}
break;
#endif
default:
ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
return 0;
}
if (ctx->p2 != NULL)
ctx->p1 = strlen(ctx->p2);
return default_fixup_args(state, translation, ctx);
}
static int get_payload_private_key(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
EVP_PKEY *pkey = ctx->p2;
ctx->p2 = NULL;
if (ctx->params->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
return 0;
switch (EVP_PKEY_base_id(pkey)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
{
DH *dh = EVP_PKEY_get0_DH(pkey);
ctx->p2 = (BIGNUM *)DH_get0_priv_key(dh);
}
break;
#endif
#ifndef OPENSSL_NO_EC
case EVP_PKEY_EC:
{
EC_KEY *ec = EVP_PKEY_get0_EC_KEY(pkey);
ctx->p2 = (BIGNUM *)EC_KEY_get0_private_key(ec);
}
break;
#endif
default:
ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
return 0;
}
return default_fixup_args(state, translation, ctx);
}
static int get_payload_public_key(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
EVP_PKEY *pkey = ctx->p2;
unsigned char *buf = NULL;
int ret;
ctx->p2 = NULL;
switch (EVP_PKEY_base_id(pkey)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
switch (ctx->params->data_type) {
case OSSL_PARAM_OCTET_STRING:
ctx->sz = ossl_dh_key2buf(EVP_PKEY_get0_DH(pkey), &buf, 0, 1);
ctx->p2 = buf;
break;
case OSSL_PARAM_UNSIGNED_INTEGER:
ctx->p2 = (void *)DH_get0_pub_key(EVP_PKEY_get0_DH(pkey));
break;
default:
return 0;
}
break;
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
if (ctx->params->data_type == OSSL_PARAM_UNSIGNED_INTEGER) {
ctx->p2 = (void *)DSA_get0_pub_key(EVP_PKEY_get0_DSA(pkey));
break;
}
return 0;
#endif
#ifndef OPENSSL_NO_EC
case EVP_PKEY_EC:
if (ctx->params->data_type == OSSL_PARAM_OCTET_STRING) {
EC_KEY *eckey = EVP_PKEY_get0_EC_KEY(pkey);
BN_CTX *bnctx = BN_CTX_new_ex(ossl_ec_key_get_libctx(eckey));
const EC_GROUP *ecg = EC_KEY_get0_group(eckey);
const EC_POINT *point = EC_KEY_get0_public_key(eckey);
ctx->sz = EC_POINT_point2buf(ecg, point,
POINT_CONVERSION_COMPRESSED,
&buf, bnctx);
ctx->p2 = buf;
break;
}
return 0;
#endif
default:
ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
return 0;
}
ret = default_fixup_args(state, translation, ctx);
OPENSSL_free(buf);
return ret;
}
static int get_payload_bn(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx, const BIGNUM *bn)
{
if (bn == NULL)
return 0;
if (ctx->params->data_type != OSSL_PARAM_UNSIGNED_INTEGER)
return 0;
ctx->p2 = (BIGNUM *)bn;
return default_fixup_args(state, translation, ctx);
}
static int get_dh_dsa_payload_p(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
EVP_PKEY *pkey = ctx->p2;
switch (EVP_PKEY_base_id(pkey)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
bn = DH_get0_p(EVP_PKEY_get0_DH(pkey));
break;
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
bn = DSA_get0_p(EVP_PKEY_get0_DSA(pkey));
break;
#endif
default:
ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_KEY_TYPE);
}
return get_payload_bn(state, translation, ctx, bn);
}
static int get_dh_dsa_payload_q(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
switch (EVP_PKEY_base_id(ctx->p2)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
bn = DH_get0_q(EVP_PKEY_get0_DH(ctx->p2));
break;
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
bn = DSA_get0_q(EVP_PKEY_get0_DSA(ctx->p2));
break;
#endif
}
return get_payload_bn(state, translation, ctx, bn);
}
static int get_dh_dsa_payload_g(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
switch (EVP_PKEY_base_id(ctx->p2)) {
#ifndef OPENSSL_NO_DH
case EVP_PKEY_DH:
bn = DH_get0_g(EVP_PKEY_get0_DH(ctx->p2));
break;
#endif
#ifndef OPENSSL_NO_DSA
case EVP_PKEY_DSA:
bn = DSA_get0_g(EVP_PKEY_get0_DSA(ctx->p2));
break;
#endif
}
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_n(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA)
return 0;
bn = RSA_get0_n(EVP_PKEY_get0_RSA(ctx->p2));
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_e(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA)
return 0;
bn = RSA_get0_e(EVP_PKEY_get0_RSA(ctx->p2));
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_d(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx)
{
const BIGNUM *bn = NULL;
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA)
return 0;
bn = RSA_get0_d(EVP_PKEY_get0_RSA(ctx->p2));
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_factor(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx,
size_t factornum)
{
const RSA *r = EVP_PKEY_get0_RSA(ctx->p2);
const BIGNUM *bn = NULL;
switch (factornum) {
case 0:
bn = RSA_get0_p(r);
break;
case 1:
bn = RSA_get0_q(r);
break;
default:
{
size_t pnum = RSA_get_multi_prime_extra_count(r);
const BIGNUM *factors[10];
if (factornum - 2 < pnum
&& RSA_get0_multi_prime_factors(r, factors))
bn = factors[factornum - 2];
}
break;
}
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_exponent(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx,
size_t exponentnum)
{
const RSA *r = EVP_PKEY_get0_RSA(ctx->p2);
const BIGNUM *bn = NULL;
switch (exponentnum) {
case 0:
bn = RSA_get0_dmp1(r);
break;
case 1:
bn = RSA_get0_dmq1(r);
break;
default:
{
size_t pnum = RSA_get_multi_prime_extra_count(r);
const BIGNUM *exps[10], *coeffs[10];
if (exponentnum - 2 < pnum
&& RSA_get0_multi_prime_crt_params(r, exps, coeffs))
bn = exps[exponentnum - 2];
}
break;
}
return get_payload_bn(state, translation, ctx, bn);
}
static int get_rsa_payload_coefficient(enum state state,
const struct translation_st *translation,
struct translation_ctx_st *ctx,
size_t coefficientnum)
{
const RSA *r = EVP_PKEY_get0_RSA(ctx->p2);
const BIGNUM *bn = NULL;
switch (coefficientnum) {
case 0:
bn = RSA_get0_iqmp(r);
break;
default:
{
size_t pnum = RSA_get_multi_prime_extra_count(r);
const BIGNUM *exps[10], *coeffs[10];
if (coefficientnum - 1 < pnum
&& RSA_get0_multi_prime_crt_params(r, exps, coeffs))
bn = coeffs[coefficientnum - 1];
}
break;
}
return get_payload_bn(state, translation, ctx, bn);
}
#define IMPL_GET_RSA_PAYLOAD_FACTOR(n) \
static int \
get_rsa_payload_f##n(enum state state, \
const struct translation_st *translation, \
struct translation_ctx_st *ctx) \
{ \
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA) \
return 0; \
return get_rsa_payload_factor(state, translation, ctx, n - 1); \
}
#define IMPL_GET_RSA_PAYLOAD_EXPONENT(n) \
static int \
get_rsa_payload_e##n(enum state state, \
const struct translation_st *translation, \
struct translation_ctx_st *ctx) \
{ \
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA) \
return 0; \
return get_rsa_payload_exponent(state, translation, ctx, \
n - 1); \
}
#define IMPL_GET_RSA_PAYLOAD_COEFFICIENT(n) \
static int \
get_rsa_payload_c##n(enum state state, \
const struct translation_st *translation, \
struct translation_ctx_st *ctx) \
{ \
if (EVP_PKEY_base_id(ctx->p2) != EVP_PKEY_RSA) \
return 0; \
return get_rsa_payload_coefficient(state, translation, ctx, \
n - 1); \
}
IMPL_GET_RSA_PAYLOAD_FACTOR(1)
IMPL_GET_RSA_PAYLOAD_FACTOR(2)
IMPL_GET_RSA_PAYLOAD_FACTOR(3)
IMPL_GET_RSA_PAYLOAD_FACTOR(4)
IMPL_GET_RSA_PAYLOAD_FACTOR(5)
IMPL_GET_RSA_PAYLOAD_FACTOR(6)
IMPL_GET_RSA_PAYLOAD_FACTOR(7)
IMPL_GET_RSA_PAYLOAD_FACTOR(8)
IMPL_GET_RSA_PAYLOAD_FACTOR(9)
IMPL_GET_RSA_PAYLOAD_FACTOR(10)
IMPL_GET_RSA_PAYLOAD_EXPONENT(1)
IMPL_GET_RSA_PAYLOAD_EXPONENT(2)
IMPL_GET_RSA_PAYLOAD_EXPONENT(3)
IMPL_GET_RSA_PAYLOAD_EXPONENT(4)
IMPL_GET_RSA_PAYLOAD_EXPONENT(5)
IMPL_GET_RSA_PAYLOAD_EXPONENT(6)
IMPL_GET_RSA_PAYLOAD_EXPONENT(7)
IMPL_GET_RSA_PAYLOAD_EXPONENT(8)
IMPL_GET_RSA_PAYLOAD_EXPONENT(9)
IMPL_GET_RSA_PAYLOAD_EXPONENT(10)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(1)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(2)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(3)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(4)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(5)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(6)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(7)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(8)
IMPL_GET_RSA_PAYLOAD_COEFFICIENT(9)
/*-
* The translation table itself
* ============================
*/
static const struct translation_st evp_pkey_ctx_translations[] = {
/*
* DistID: we pass it to the backend as an octet string,
* but get it back as a pointer to an octet string.
*
* Note that the EVP_PKEY_CTRL_GET1_ID_LEN is purely for legacy purposes
* that has no separate counterpart in OSSL_PARAM terms, since we get
* the length of the DistID automatically when getting the DistID itself.
*/
{ SET, -1, -1, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_SET1_ID, "distid", "hexdistid",
OSSL_PKEY_PARAM_DIST_ID, OSSL_PARAM_OCTET_STRING, NULL },
{ GET, -1, -1, -1,
EVP_PKEY_CTRL_GET1_ID, "distid", "hexdistid",
OSSL_PKEY_PARAM_DIST_ID, OSSL_PARAM_OCTET_PTR, NULL },
{ GET, -1, -1, -1,
EVP_PKEY_CTRL_GET1_ID_LEN, NULL, NULL,
OSSL_PKEY_PARAM_DIST_ID, OSSL_PARAM_OCTET_PTR, fix_distid_len },
/*-
* DH & DHX
* ========
*/
/*
* EVP_PKEY_CTRL_DH_KDF_TYPE is used both for setting and getting. The
* fixup function has to handle this...
*/
{ NONE, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_KDF_TYPE, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_TYPE, OSSL_PARAM_UTF8_STRING,
fix_dh_kdf_type },
{ SET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_KDF_MD, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ GET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_DH_KDF_MD, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_KDF_OUTLEN, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_OUTLEN, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ GET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_OUTLEN, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_KDF_UKM, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_UKM, OSSL_PARAM_OCTET_STRING, NULL },
{ GET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_DH_KDF_UKM, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_UKM, OSSL_PARAM_OCTET_PTR, NULL },
{ SET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_KDF_OID, NULL, NULL,
OSSL_KDF_PARAM_CEK_ALG, OSSL_PARAM_UTF8_STRING, fix_oid },
{ GET, EVP_PKEY_DHX, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_DH_KDF_OID, NULL, NULL,
OSSL_KDF_PARAM_CEK_ALG, OSSL_PARAM_UTF8_STRING, fix_oid },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_DH_PAD, "dh_pad", NULL,
OSSL_EXCHANGE_PARAM_PAD, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_DH_NID, "dh_param", NULL,
OSSL_PKEY_PARAM_GROUP_NAME, OSSL_PARAM_UTF8_STRING, fix_dh_nid },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN, NULL, NULL,
OSSL_PKEY_PARAM_FFC_PBITS, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN, "dh_paramgen_subprime_len", NULL,
OSSL_PKEY_PARAM_FFC_QBITS, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR, "dh_paramgen_generator", NULL,
OSSL_PKEY_PARAM_DH_GENERATOR, OSSL_PARAM_INTEGER, NULL },
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DH_PARAMGEN_TYPE, "dh_paramgen_type", NULL,
OSSL_PKEY_PARAM_FFC_TYPE, OSSL_PARAM_UTF8_STRING, fix_dh_paramgen_type },
/*
* This is know to be incorrect, will be fixed and enabled when the
* underlying code is corrected.
* Until then, we simply don't support it here.
*/
#if 0
{ SET, EVP_PKEY_DH, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DH_RFC5114, "dh_rfc5114", NULL,
OSSL_PKEY_PARAM_GROUP_NAME, OSSL_PARAM_INTEGER, NULL },
#endif
/*-
* DSA
* ===
*/
{ SET, EVP_PKEY_DSA, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, "dsa_paramgen_bits", NULL,
OSSL_PKEY_PARAM_FFC_PBITS, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DSA, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS, "dsa_paramgen_q_bits", NULL,
OSSL_PKEY_PARAM_FFC_QBITS, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_DSA, 0, EVP_PKEY_OP_PARAMGEN,
EVP_PKEY_CTRL_DSA_PARAMGEN_MD, "dsa_paramgen_md", NULL,
OSSL_PKEY_PARAM_FFC_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
/*-
* EC
* ==
*/
{ SET, EVP_PKEY_EC, 0, EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_EC_PARAM_ENC, "ec_param_enc", NULL,
OSSL_PKEY_PARAM_EC_ENCODING, OSSL_PARAM_UTF8_STRING, fix_ec_param_enc },
{ SET, EVP_PKEY_EC, 0, EVP_PKEY_OP_PARAMGEN | EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID, "ec_paramgen_curve", NULL,
OSSL_PKEY_PARAM_GROUP_NAME, OSSL_PARAM_UTF8_STRING,
fix_ec_paramgen_curve_nid },
/*
* EVP_PKEY_CTRL_EC_ECDH_COFACTOR and EVP_PKEY_CTRL_EC_KDF_TYPE are used
* both for setting and getting. The fixup function has to handle this...
*/
{ NONE, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_EC_ECDH_COFACTOR, "ecdh_cofactor_mode", NULL,
OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE, OSSL_PARAM_INTEGER,
fix_ecdh_cofactor },
{ NONE, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_EC_KDF_TYPE, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_TYPE, OSSL_PARAM_UTF8_STRING, fix_ec_kdf_type },
{ SET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_EC_KDF_MD, "ecdh_kdf_md", NULL,
OSSL_EXCHANGE_PARAM_KDF_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ GET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_EC_KDF_MD, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_EC_KDF_OUTLEN, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_OUTLEN, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ GET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_OUTLEN, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_EC_KDF_UKM, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_UKM, OSSL_PARAM_OCTET_STRING, NULL },
{ GET, EVP_PKEY_EC, 0, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_GET_EC_KDF_UKM, NULL, NULL,
OSSL_EXCHANGE_PARAM_KDF_UKM, OSSL_PARAM_OCTET_PTR, NULL },
/*-
* RSA
* ===
*/
/*
* RSA padding modes are numeric with ctrls, strings with ctrl_strs,
* and can be both with OSSL_PARAM. We standardise on strings here,
* fix_rsa_padding_mode() does the work when the caller has a different
* idea.
*/
{ SET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS,
EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_RSA_PADDING, "rsa_padding_mode", NULL,
OSSL_PKEY_PARAM_PAD_MODE, OSSL_PARAM_UTF8_STRING, fix_rsa_padding_mode },
{ GET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS,
EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_GET_RSA_PADDING, NULL, NULL,
OSSL_PKEY_PARAM_PAD_MODE, OSSL_PARAM_UTF8_STRING, fix_rsa_padding_mode },
{ SET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS,
EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_RSA_MGF1_MD, "rsa_mgf1_md", NULL,
OSSL_PKEY_PARAM_MGF1_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ GET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS,
EVP_PKEY_OP_TYPE_CRYPT | EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_GET_RSA_MGF1_MD, NULL, NULL,
OSSL_PKEY_PARAM_MGF1_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
/*
* RSA-PSS saltlen is essentially numeric, but certain values can be
* expressed as keywords (strings) with ctrl_str. The corresponding
* OSSL_PARAM allows both forms.
* fix_rsa_pss_saltlen() takes care of the distinction.
*/
{ SET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_RSA_PSS_SALTLEN, "rsa_pss_saltlen", NULL,
OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, OSSL_PARAM_UTF8_STRING,
fix_rsa_pss_saltlen },
{ GET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN, NULL, NULL,
OSSL_PKEY_PARAM_RSA_PSS_SALTLEN, OSSL_PARAM_UTF8_STRING,
fix_rsa_pss_saltlen },
{ SET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_TYPE_CRYPT,
EVP_PKEY_CTRL_RSA_OAEP_MD, "rsa_oaep_md", NULL,
OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ GET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_TYPE_CRYPT,
EVP_PKEY_CTRL_GET_RSA_OAEP_MD, NULL, NULL,
OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
/*
* The "rsa_oaep_label" ctrl_str expects the value to always be hex.
* This is accomodated by default_fixup_args() above, which mimics that
* expectation for any translation item where |ctrl_str| is NULL and
* |ctrl_hexstr| is non-NULL.
*/
{ SET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_TYPE_CRYPT,
EVP_PKEY_CTRL_RSA_OAEP_LABEL, NULL, "rsa_oaep_label",
OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, OSSL_PARAM_OCTET_STRING, NULL },
{ GET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_TYPE_CRYPT,
EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL, NULL, NULL,
OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, EVP_PKEY_RSA_PSS, 0, EVP_PKEY_OP_TYPE_GEN,
EVP_PKEY_CTRL_MD, "rsa_pss_keygen_md", NULL,
OSSL_ALG_PARAM_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, EVP_PKEY_RSA_PSS, 0, EVP_PKEY_OP_TYPE_GEN,
EVP_PKEY_CTRL_RSA_MGF1_MD, "rsa_pss_keygen_mgf1_md", NULL,
OSSL_PKEY_PARAM_MGF1_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, EVP_PKEY_RSA_PSS, 0, EVP_PKEY_OP_TYPE_GEN,
EVP_PKEY_CTRL_RSA_PSS_SALTLEN, "rsa_pss_keygen_saltlen", NULL,
OSSL_SIGNATURE_PARAM_PSS_SALTLEN, OSSL_PARAM_INTEGER, NULL },
{ SET, EVP_PKEY_RSA, EVP_PKEY_RSA_PSS, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_RSA_KEYGEN_BITS, "rsa_keygen_bits", NULL,
OSSL_PKEY_PARAM_RSA_BITS, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP, "rsa_keygen_pubexp", NULL,
OSSL_PKEY_PARAM_RSA_E, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, EVP_PKEY_RSA, 0, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES, "rsa_keygen_primes", NULL,
OSSL_PKEY_PARAM_RSA_PRIMES, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
/* PKCS#7 and CMS hacks */
{ SET, -1, -1, EVP_PKEY_OP_ENCRYPT,
EVP_PKEY_CTRL_PKCS7_ENCRYPT, NULL, NULL, NULL, 0, hack_pkcs7_cms },
{ SET, -1, -1, EVP_PKEY_OP_DECRYPT,
EVP_PKEY_CTRL_PKCS7_DECRYPT, NULL, NULL, NULL, 0, hack_pkcs7_cms },
{ SET, -1, -1, EVP_PKEY_OP_ENCRYPT,
EVP_PKEY_CTRL_CMS_ENCRYPT, NULL, NULL, NULL, 0, hack_pkcs7_cms },
{ SET, -1, -1, EVP_PKEY_OP_DECRYPT,
EVP_PKEY_CTRL_CMS_DECRYPT, NULL, NULL, NULL, 0, hack_pkcs7_cms },
/*-
* TLS1-PRF
* ========
*/
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_TLS_MD, "md", NULL,
OSSL_KDF_PARAM_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_TLS_SECRET, "secret", "hexsecret",
OSSL_KDF_PARAM_SECRET, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_TLS_SEED, "seed", "hexseed",
OSSL_KDF_PARAM_SEED, OSSL_PARAM_OCTET_STRING, NULL },
/*-
* HKDF
* ====
*/
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_MD, "md", NULL,
OSSL_KDF_PARAM_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_SALT, "salt", "hexsalt",
OSSL_KDF_PARAM_SALT, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_KEY, "key", "hexkey",
OSSL_KDF_PARAM_KEY, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_INFO, "info", "hexinfo",
OSSL_KDF_PARAM_INFO, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_HKDF_MODE, "mode", NULL,
OSSL_KDF_PARAM_MODE, OSSL_PARAM_INTEGER, fix_hkdf_mode },
/*-
* Scrypt
* ======
*/
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_PASS, "pass", "hexpass",
OSSL_KDF_PARAM_PASSWORD, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_SALT, "salt", "hexsalt",
OSSL_KDF_PARAM_SALT, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_N, "N", NULL,
OSSL_KDF_PARAM_SCRYPT_N, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_R, "r", NULL,
OSSL_KDF_PARAM_SCRYPT_R, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_P, "p", NULL,
OSSL_KDF_PARAM_SCRYPT_P, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, -1, -1, EVP_PKEY_OP_DERIVE,
EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES, "maxmem_bytes", NULL,
OSSL_KDF_PARAM_SCRYPT_MAXMEM, OSSL_PARAM_UNSIGNED_INTEGER, NULL },
{ SET, -1, -1, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_CIPHER, NULL, NULL,
OSSL_PKEY_PARAM_CIPHER, OSSL_PARAM_UTF8_STRING, fix_cipher },
{ SET, -1, -1, EVP_PKEY_OP_KEYGEN,
EVP_PKEY_CTRL_SET_MAC_KEY, NULL, NULL,
OSSL_PKEY_PARAM_PRIV_KEY, OSSL_PARAM_OCTET_STRING, NULL },
{ SET, -1, -1, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_MD, NULL, NULL,
OSSL_SIGNATURE_PARAM_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
{ GET, -1, -1, EVP_PKEY_OP_TYPE_SIG,
EVP_PKEY_CTRL_GET_MD, NULL, NULL,
OSSL_SIGNATURE_PARAM_DIGEST, OSSL_PARAM_UTF8_STRING, fix_md },
};
static const struct translation_st evp_pkey_translations[] = {
/*
* The following contain no ctrls, they are exclusively here to extract
* key payloads from legacy keys, using OSSL_PARAMs, and rely entirely
* on |fixup_args| to pass the actual data. The |fixup_args| should
* expect to get the EVP_PKEY pointer through |ctx->p2|.
*/
/* DH, DSA & EC */
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_GROUP_NAME, OSSL_PARAM_UTF8_STRING,
get_payload_group_name },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_PRIV_KEY, OSSL_PARAM_UNSIGNED_INTEGER,
get_payload_private_key },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_PUB_KEY,
0 /* no data type, let get_payload_pub_key() handle that */,
get_payload_public_key },
/* DH and DSA */
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_FFC_P, OSSL_PARAM_UNSIGNED_INTEGER,
get_dh_dsa_payload_p },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_FFC_G, OSSL_PARAM_UNSIGNED_INTEGER,
get_dh_dsa_payload_g },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_FFC_Q, OSSL_PARAM_UNSIGNED_INTEGER,
get_dh_dsa_payload_q },
/* RSA */
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_N, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_n },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_E, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_D, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_d },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR1, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f1 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR2, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f2 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR3, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f3 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR4, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f4 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR5, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f5 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR6, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f6 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR7, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f7 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR8, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f8 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR9, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f9 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_FACTOR10, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_f10 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT1, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e1 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT2, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e2 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT3, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e3 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT4, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e4 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT5, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e5 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT6, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e6 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT7, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e7 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT8, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e8 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT9, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e9 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_EXPONENT10, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_e10 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT1, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c1 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT2, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c2 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT3, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c3 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT4, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c4 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT5, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c5 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT6, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c6 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT7, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c7 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT8, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c8 },
{ GET, -1, -1, -1, 0, NULL, NULL,
OSSL_PKEY_PARAM_RSA_COEFFICIENT9, OSSL_PARAM_UNSIGNED_INTEGER,
get_rsa_payload_c9 },
};
static const struct translation_st *
lookup_translation(struct translation_st *tmpl,
const struct translation_st *translations,
size_t translations_num)
{
size_t i;
for (i = 0; i < translations_num; i++) {
const struct translation_st *item = &translations[i];
/*
* Sanity check the translation table item.
*
* 1. Either both keytypes are -1, or neither of them are.
* 2. TBA...
*/
if (!ossl_assert((item->keytype1 == -1) == (item->keytype2 == -1)))
continue;
/*
* Base search criteria: check that the optype and keytypes match,
* if relevant. All callers must synthesise these bits somehow.
*/
if (item->optype != -1 && (tmpl->optype & item->optype) == 0)
continue;
/*
* This expression is stunningly simple thanks to the sanity check
* above.
*/
if (item->keytype1 != -1
&& tmpl->keytype1 != item->keytype1
&& tmpl->keytype2 != item->keytype2)
continue;
/*
* Done with the base search criteria, now we check the criteria for
* the individual types of translations:
* ctrl->params, ctrl_str->params, and params->ctrl
*/
if (tmpl->ctrl_num != 0) {
if (tmpl->ctrl_num != item->ctrl_num)
continue;
} else if (tmpl->ctrl_str != NULL) {
const char *ctrl_str = NULL;
const char *ctrl_hexstr = NULL;
/*
* Search criteria that originates from a ctrl_str is only used
* for setting, never for getting. Therefore, we only look at
* the setter items.
*/
if (item->action_type != NONE
&& item->action_type != SET)
continue;
/*
* At least one of the ctrl cmd names must be match the ctrl
* cmd name in the template.
*/
if (item->ctrl_str != NULL
&& strcasecmp(tmpl->ctrl_str, item->ctrl_str) == 0)
ctrl_str = tmpl->ctrl_str;
else if (item->ctrl_hexstr != NULL
&& strcasecmp(tmpl->ctrl_hexstr, item->ctrl_hexstr) == 0)
ctrl_hexstr = tmpl->ctrl_hexstr;
else
continue;
/* Modify the template to signal which string matched */
tmpl->ctrl_str = ctrl_str;
tmpl->ctrl_hexstr = ctrl_hexstr;
} else if (tmpl->param_key != NULL) {
/*
* Search criteria that originates from a OSSL_PARAM setter or
* getter.
*
* Ctrls were fundamentally bidirectional, with only the ctrl
* command macro name implying direction (if you're lucky).
* A few ctrl commands were even taking advantage of the
* bidirectional nature, making the direction depend in the
* value of the numeric argument.
*
* OSSL_PARAM functions are fundamentally different, in that
* setters and getters are separated, so the data direction is
* implied by the function that's used. The same OSSL_PARAM
* key name can therefore be used in both directions. We must
* therefore take the action type into account in this case.
*/
if ((item->action_type != NONE
&& tmpl->action_type != item->action_type)
|| (item->param_key != NULL
&& strcasecmp(tmpl->param_key, item->param_key) != 0))
continue;
} else {
return NULL;
}
return item;
}
return NULL;
}
static const struct translation_st *
lookup_evp_pkey_ctx_translation(struct translation_st *tmpl)
{
return lookup_translation(tmpl, evp_pkey_ctx_translations,
OSSL_NELEM(evp_pkey_ctx_translations));
}
static const struct translation_st *
lookup_evp_pkey_translation(struct translation_st *tmpl)
{
return lookup_translation(tmpl, evp_pkey_translations,
OSSL_NELEM(evp_pkey_translations));
}
/* This must ONLY be called for provider side operations */
int evp_pkey_ctx_ctrl_to_param(EVP_PKEY_CTX *pctx,
int keytype, int optype,
int cmd, int p1, void *p2)
{
struct translation_ctx_st ctx = { 0, };
struct translation_st tmpl = { 0, };
const struct translation_st *translation = NULL;
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
int ret;
fixup_args_fn *fixup = default_fixup_args;
if (keytype == -1)
keytype = pctx->legacy_keytype;
tmpl.ctrl_num = cmd;
tmpl.keytype1 = tmpl.keytype2 = keytype;
tmpl.optype = optype;
translation = lookup_evp_pkey_ctx_translation(&tmpl);
if (translation == NULL) {
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
if (pctx->pmeth != NULL
&& pctx->pmeth->pkey_id != translation->keytype1
&& pctx->pmeth->pkey_id != translation->keytype2)
return -1;
if (translation->fixup_args != NULL)
fixup = translation->fixup_args;
ctx.action_type = translation->action_type;
ctx.ctrl_cmd = cmd;
ctx.p1 = p1;
ctx.p2 = p2;
ctx.pctx = pctx;
ctx.params = params;
ret = fixup(PRE_CTRL_TO_PARAMS, translation, &ctx);
if (ret > 0) {
switch (ctx.action_type) {
default:
/* fixup_args is expected to make sure this is dead code */
break;
case GET:
ret = evp_pkey_ctx_get_params_strict(pctx, ctx.params);
break;
case SET:
ret = evp_pkey_ctx_set_params_strict(pctx, ctx.params);
break;
}
}
/*
* In POST, we pass the return value as p1, allowing the fixup_args
* function to affect it by changing its value.
*/
if (ret > 0) {
ctx.p1 = ret;
fixup(POST_CTRL_TO_PARAMS, translation, &ctx);
ret = ctx.p1;
}
cleanup_translation_ctx(POST_CTRL_TO_PARAMS, translation, &ctx);
return ret;
}
/* This must ONLY be called for provider side operations */
int evp_pkey_ctx_ctrl_str_to_param(EVP_PKEY_CTX *pctx,
const char *name, const char *value)
{
struct translation_ctx_st ctx = { 0, };
struct translation_st tmpl = { 0, };
const struct translation_st *translation = NULL;
OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
int keytype = pctx->legacy_keytype;
int optype = pctx->operation == 0 ? -1 : pctx->operation;
int ret;
fixup_args_fn *fixup = default_fixup_args;
tmpl.action_type = SET;
tmpl.keytype1 = tmpl.keytype2 = keytype;
tmpl.optype = optype;
tmpl.ctrl_str = name;
tmpl.ctrl_hexstr = name;
translation = lookup_evp_pkey_ctx_translation(&tmpl);
if (translation != NULL) {
if (translation->fixup_args != NULL)
fixup = translation->fixup_args;
ctx.action_type = translation->action_type;
ctx.ishex = (tmpl.ctrl_hexstr != NULL);
} else {
/* String controls really only support setting */
ctx.action_type = SET;
}
ctx.ctrl_str = name;
ctx.p1 = (int)strlen(value);
ctx.p2 = (char *)value;
ctx.pctx = pctx;
ctx.params = params;
ret = fixup(PRE_CTRL_STR_TO_PARAMS, translation, &ctx);
if (ret > 0) {
switch (ctx.action_type) {
default:
/* fixup_args is expected to make sure this is dead code */
break;
case GET:
/*
* this is dead code, but must be present, or some compilers
* will complain
*/
break;
case SET:
ret = evp_pkey_ctx_set_params_strict(pctx, ctx.params);
break;
}
}
if (ret > 0)
ret = fixup(POST_CTRL_STR_TO_PARAMS, translation, &ctx);
cleanup_translation_ctx(CLEANUP_CTRL_STR_TO_PARAMS, translation, &ctx);
return ret;
}
/* This must ONLY be called for legacy operations */
static int evp_pkey_ctx_setget_params_to_ctrl(EVP_PKEY_CTX *pctx,
enum action action_type,
OSSL_PARAM *params)
{
int keytype = pctx->legacy_keytype;
int optype = pctx->operation == 0 ? -1 : pctx->operation;
for (; params != NULL && params->key != NULL; params++) {
struct translation_ctx_st ctx = { 0, };
struct translation_st tmpl = { 0, };
const struct translation_st *translation = NULL;
fixup_args_fn *fixup = default_fixup_args;
int ret;
tmpl.action_type = action_type;
tmpl.keytype1 = tmpl.keytype2 = keytype;
tmpl.optype = optype;
tmpl.param_key = params->key;
translation = lookup_evp_pkey_ctx_translation(&tmpl);
if (translation != NULL) {
if (translation->fixup_args != NULL)
fixup = translation->fixup_args;
ctx.action_type = translation->action_type;
}
ctx.pctx = pctx;
ctx.params = params;
ret = fixup(PRE_PARAMS_TO_CTRL, translation, &ctx);
if (ret > 0 && action_type != NONE)
ret = EVP_PKEY_CTX_ctrl(pctx, keytype, optype,
ctx.ctrl_cmd, ctx.p1, ctx.p2);
/*
* In POST, we pass the return value as p1, allowing the fixup_args
* function to put it to good use, or maybe affect it.
*/
if (ret > 0) {
ctx.p1 = ret;
fixup(POST_PARAMS_TO_CTRL, translation, &ctx);
ret = ctx.p1;
}
cleanup_translation_ctx(CLEANUP_PARAMS_TO_CTRL, translation, &ctx);
if (ret <= 0)
return 0;
}
return 1;
}
int evp_pkey_ctx_set_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
{
return evp_pkey_ctx_setget_params_to_ctrl(ctx, SET, params);
}
int evp_pkey_ctx_get_params_to_ctrl(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
{
return evp_pkey_ctx_setget_params_to_ctrl(ctx, GET, params);
}
/* This must ONLY be called for legacy EVP_PKEYs */
static int evp_pkey_setget_params_to_ctrl(const EVP_PKEY *pkey,
enum action action_type,
OSSL_PARAM *params)
{
int ret = 1;
for (; params != NULL && params->key != NULL; params++) {
struct translation_ctx_st ctx = { 0, };
struct translation_st tmpl = { 0, };
const struct translation_st *translation = NULL;
fixup_args_fn *fixup = default_fixup_args;
tmpl.action_type = action_type;
tmpl.param_key = params->key;
translation = lookup_evp_pkey_translation(&tmpl);
if (translation != NULL) {
if (translation->fixup_args != NULL)
fixup = translation->fixup_args;
ctx.action_type = translation->action_type;
}
ctx.p2 = (void *)pkey;
ctx.params = params;
/*
* EVP_PKEY doesn't have any ctrl function, so we rely completely
* on fixup_args to do the whole work. Also, we currently only
* support getting.
*/
if (!ossl_assert(translation != NULL)
|| !ossl_assert(translation->action_type == GET)
|| !ossl_assert(translation->fixup_args != NULL)) {
return -2;
}
ret = fixup(PKEY, translation, &ctx);
cleanup_translation_ctx(PKEY, translation, &ctx);
}
return ret;
}
int evp_pkey_get_params_to_ctrl(const EVP_PKEY *pkey, OSSL_PARAM *params)
{
return evp_pkey_setget_params_to_ctrl(pkey, GET, params);
}
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