mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
7229a2f4ab
Fixes #12852 Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> Reviewed-by: Shane Lontis <shane.lontis@oracle.com> (Merged from https://github.com/openssl/openssl/pull/12853)
487 lines
15 KiB
C
487 lines
15 KiB
C
/*
|
|
* Copyright 2020 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
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include <openssl/err.h>
|
|
#include <openssl/opensslv.h>
|
|
|
|
#include <openssl/core_names.h>
|
|
#include "crypto/evp.h"
|
|
|
|
#include "ec_local.h"
|
|
|
|
/*
|
|
* This file is meant to contain functions to provide EVP_PKEY support for EC
|
|
* keys.
|
|
*/
|
|
|
|
static ossl_inline
|
|
int evp_pkey_ctx_getset_ecdh_param_checks(const EVP_PKEY_CTX *ctx)
|
|
{
|
|
if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
|
|
/* If key type not EC return error */
|
|
if (ctx->pmeth != NULL && ctx->pmeth->pkey_id != EVP_PKEY_EC)
|
|
return -1;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx, int cofactor_mode)
|
|
{
|
|
int ret;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/*
|
|
* Valid input values are:
|
|
* * 0 for disable
|
|
* * 1 for enable
|
|
* * -1 for reset to default for associated priv key
|
|
*/
|
|
if (cofactor_mode < -1 || cofactor_mode > 1) {
|
|
/* Uses the same return value of pkey_ec_ctrl() */
|
|
return -2;
|
|
}
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_ECDH_COFACTOR,
|
|
cofactor_mode, NULL);
|
|
|
|
*p++ = OSSL_PARAM_construct_int(OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE,
|
|
&cofactor_mode);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_get_ecdh_cofactor_mode(EVP_PKEY_CTX *ctx)
|
|
{
|
|
int ret, mode;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_ECDH_COFACTOR, -2, NULL);
|
|
|
|
*p++ = OSSL_PARAM_construct_int(OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE,
|
|
&mode);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_get_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
} else if (ret != 1) {
|
|
return -1;
|
|
}
|
|
|
|
if (mode < 0 || mode > 1) {
|
|
/*
|
|
* The provider should return either 0 or 1, any other value is a
|
|
* provider error.
|
|
*/
|
|
return -1;
|
|
}
|
|
|
|
return mode;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set_ecdh_kdf_type(EVP_PKEY_CTX *ctx, int kdf)
|
|
{
|
|
int ret;
|
|
const char *kdf_type;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
switch (kdf) {
|
|
case EVP_PKEY_ECDH_KDF_NONE:
|
|
kdf_type = "";
|
|
break;
|
|
case EVP_PKEY_ECDH_KDF_X9_63:
|
|
kdf_type = OSSL_KDF_NAME_X963KDF;
|
|
break;
|
|
default:
|
|
return -2;
|
|
}
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_KDF_TYPE, kdf, NULL);
|
|
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_TYPE,
|
|
/*
|
|
* Cast away the const. This is read
|
|
* only so should be safe
|
|
*/
|
|
(char *)kdf_type, 0);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_get_ecdh_kdf_type(EVP_PKEY_CTX *ctx)
|
|
{
|
|
int ret;
|
|
/* 80 should be big enough */
|
|
char kdf_type[80];
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_KDF_TYPE, -2, NULL);
|
|
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_TYPE,
|
|
kdf_type, sizeof(kdf_type));
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_get_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
} else if (ret != 1) {
|
|
return -1;
|
|
}
|
|
|
|
if (kdf_type[0] == '\0')
|
|
return EVP_PKEY_ECDH_KDF_NONE;
|
|
else if (strcmp(kdf_type, OSSL_KDF_NAME_X963KDF) == 0)
|
|
return EVP_PKEY_ECDH_KDF_X9_63;
|
|
|
|
return -1;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
|
|
{
|
|
int ret;
|
|
OSSL_PARAM params[2], *p = params;
|
|
const char *md_name = NULL;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_KDF_MD, 0, (void *)(md));
|
|
|
|
md_name = (md == NULL) ? "" : EVP_MD_name(md);
|
|
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_DIGEST,
|
|
/*
|
|
* Cast away the const. This is read
|
|
* only so should be safe
|
|
*/
|
|
(char *)md_name, 0);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_get_ecdh_kdf_md(EVP_PKEY_CTX *ctx, const EVP_MD **pmd)
|
|
{
|
|
/* 80 should be big enough */
|
|
char name[80] = "";
|
|
int ret;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_GET_EC_KDF_MD, 0, (void *)(pmd));
|
|
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_EXCHANGE_PARAM_KDF_DIGEST,
|
|
name, sizeof(name));
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_get_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
} else if (ret != 1) {
|
|
return -1;
|
|
}
|
|
|
|
/* May be NULL meaning "unknown" */
|
|
*pmd = EVP_get_digestbyname(name);
|
|
|
|
return 1;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int in)
|
|
{
|
|
int ret;
|
|
size_t len = in;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_KDF_OUTLEN, in, NULL);
|
|
|
|
if (in <= 0) {
|
|
/*
|
|
* This would ideally be -1 or 0, but we have to retain compatibility
|
|
* with legacy behaviour of EVP_PKEY_CTX_ctrl() which returned -2 if
|
|
* in <= 0
|
|
*/
|
|
return -2;
|
|
}
|
|
|
|
*p++ = OSSL_PARAM_construct_size_t(OSSL_EXCHANGE_PARAM_KDF_OUTLEN,
|
|
&len);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_get_ecdh_kdf_outlen(EVP_PKEY_CTX *ctx, int *plen)
|
|
{
|
|
size_t len = UINT_MAX;
|
|
int ret;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN, 0,
|
|
(void *)(plen));
|
|
|
|
*p++ = OSSL_PARAM_construct_size_t(OSSL_EXCHANGE_PARAM_KDF_OUTLEN,
|
|
&len);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_get_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
} else if (ret != 1) {
|
|
return -1;
|
|
}
|
|
|
|
if (len > INT_MAX)
|
|
return -1;
|
|
|
|
*plen = (int)len;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char *ukm, int len)
|
|
{
|
|
int ret;
|
|
OSSL_PARAM params[2], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_EC_KDF_UKM, len, (void *)(ukm));
|
|
|
|
*p++ = OSSL_PARAM_construct_octet_string(OSSL_EXCHANGE_PARAM_KDF_UKM,
|
|
/*
|
|
* Cast away the const. This is read
|
|
* only so should be safe
|
|
*/
|
|
(void *)ukm,
|
|
(size_t)len);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
if (ret == 1)
|
|
OPENSSL_free(ukm);
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_get0_ecdh_kdf_ukm(EVP_PKEY_CTX *ctx, unsigned char **pukm)
|
|
{
|
|
size_t ukmlen;
|
|
int ret;
|
|
OSSL_PARAM params[3], *p = params;
|
|
|
|
ret = evp_pkey_ctx_getset_ecdh_param_checks(ctx);
|
|
if (ret != 1)
|
|
return ret;
|
|
|
|
/* TODO(3.0): Remove this eventually when no more legacy */
|
|
if (ctx->op.kex.exchprovctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_DERIVE,
|
|
EVP_PKEY_CTRL_GET_EC_KDF_UKM, 0,
|
|
(void *)(pukm));
|
|
|
|
*p++ = OSSL_PARAM_construct_octet_ptr(OSSL_EXCHANGE_PARAM_KDF_UKM,
|
|
(void **)pukm, 0);
|
|
*p++ = OSSL_PARAM_construct_size_t(OSSL_EXCHANGE_PARAM_KDF_UKM_LEN,
|
|
&ukmlen);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_get_params_strict(ctx, params);
|
|
if (ret == -2) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
} else if (ret != 1) {
|
|
return -1;
|
|
}
|
|
|
|
if (ukmlen > INT_MAX)
|
|
return -1;
|
|
|
|
return (int)ukmlen;
|
|
}
|
|
|
|
#ifndef FIPS_MODULE
|
|
int EVP_PKEY_CTX_set_ec_paramgen_curve_nid(EVP_PKEY_CTX *ctx, int nid)
|
|
{
|
|
if (ctx == NULL || !EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
/* Uses the same return values as EVP_PKEY_CTX_ctrl */
|
|
return -2;
|
|
}
|
|
|
|
/* Legacy: if key type not EC return error */
|
|
if (ctx->pmeth != NULL
|
|
&& EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_EC)
|
|
return -1;
|
|
|
|
if (ctx->op.keymgmt.genctx == NULL)
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN,
|
|
EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID,
|
|
nid, NULL);
|
|
|
|
return EVP_PKEY_CTX_set_group_name(ctx, OBJ_nid2sn(nid));
|
|
}
|
|
|
|
int evp_pkey_ctx_set_ec_param_enc_prov(EVP_PKEY_CTX *ctx, int param_enc)
|
|
{
|
|
const char *enc = NULL;
|
|
OSSL_PARAM params[2], *p = params;
|
|
int ret = -2; /* Assume unsupported */
|
|
|
|
if (ctx == NULL
|
|
|| !EVP_PKEY_CTX_IS_GEN_OP(ctx)
|
|
|| ctx->op.keymgmt.genctx == NULL)
|
|
goto end;
|
|
|
|
switch (param_enc) {
|
|
case OPENSSL_EC_EXPLICIT_CURVE:
|
|
enc = OSSL_PKEY_EC_ENCODING_EXPLICIT;
|
|
break;
|
|
case OPENSSL_EC_NAMED_CURVE:
|
|
enc = OSSL_PKEY_EC_ENCODING_GROUP;
|
|
break;
|
|
default:
|
|
goto end;
|
|
}
|
|
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_EC_ENCODING,
|
|
(char *)enc, 0);
|
|
*p++ = OSSL_PARAM_construct_end();
|
|
|
|
ret = evp_pkey_ctx_set_params_strict(ctx, params);
|
|
end:
|
|
if (ret == -2)
|
|
ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
|
|
return ret;
|
|
}
|
|
|
|
int EVP_PKEY_CTX_set_ec_param_enc(EVP_PKEY_CTX *ctx, int param_enc)
|
|
{
|
|
return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_EC,
|
|
EVP_PKEY_OP_PARAMGEN|EVP_PKEY_OP_KEYGEN,
|
|
EVP_PKEY_CTRL_EC_PARAM_ENC, param_enc, NULL);
|
|
}
|
|
#endif
|