mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
bbaeadb068
Found by running the checkpatch.pl Linux script to enforce coding style. Reviewed-by: Paul Dale <pauli@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/21468)
282 lines
11 KiB
C
282 lines
11 KiB
C
/*
|
|
* Copyright 2019-2023 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
|
|
*/
|
|
|
|
/* Dispatch functions for RC2 cipher modes ecb, cbc, ofb, cfb */
|
|
|
|
/*
|
|
* RC2 low level APIs are deprecated for public use, but still ok for internal
|
|
* use.
|
|
*/
|
|
#include "internal/deprecated.h"
|
|
|
|
#include <openssl/proverr.h>
|
|
#include "cipher_rc2.h"
|
|
#include "prov/implementations.h"
|
|
#include "prov/providercommon.h"
|
|
|
|
#define RC2_40_MAGIC 0xa0
|
|
#define RC2_64_MAGIC 0x78
|
|
#define RC2_128_MAGIC 0x3a
|
|
#define RC2_FLAGS PROV_CIPHER_FLAG_VARIABLE_LENGTH
|
|
|
|
static OSSL_FUNC_cipher_encrypt_init_fn rc2_einit;
|
|
static OSSL_FUNC_cipher_decrypt_init_fn rc2_dinit;
|
|
static OSSL_FUNC_cipher_freectx_fn rc2_freectx;
|
|
static OSSL_FUNC_cipher_dupctx_fn rc2_dupctx;
|
|
static OSSL_FUNC_cipher_gettable_ctx_params_fn rc2_gettable_ctx_params;
|
|
static OSSL_FUNC_cipher_settable_ctx_params_fn rc2_settable_ctx_params;
|
|
static OSSL_FUNC_cipher_set_ctx_params_fn rc2_set_ctx_params;
|
|
|
|
static void rc2_freectx(void *vctx)
|
|
{
|
|
PROV_RC2_CTX *ctx = (PROV_RC2_CTX *)vctx;
|
|
|
|
ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
|
|
OPENSSL_clear_free(ctx, sizeof(*ctx));
|
|
}
|
|
|
|
static void *rc2_dupctx(void *ctx)
|
|
{
|
|
PROV_RC2_CTX *in = (PROV_RC2_CTX *)ctx;
|
|
PROV_RC2_CTX *ret;
|
|
|
|
if (!ossl_prov_is_running())
|
|
return NULL;
|
|
|
|
ret = OPENSSL_malloc(sizeof(*ret));
|
|
if (ret == NULL)
|
|
return NULL;
|
|
*ret = *in;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rc2_keybits_to_magic(int keybits)
|
|
{
|
|
switch (keybits) {
|
|
case 128:
|
|
return RC2_128_MAGIC;
|
|
case 64:
|
|
return RC2_64_MAGIC;
|
|
case 40:
|
|
return RC2_40_MAGIC;
|
|
}
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_KEY_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
static int rc2_magic_to_keybits(int magic)
|
|
{
|
|
switch (magic) {
|
|
case RC2_128_MAGIC:
|
|
return 128;
|
|
case RC2_64_MAGIC:
|
|
return 64;
|
|
case RC2_40_MAGIC:
|
|
return 40;
|
|
}
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_UNSUPPORTED_KEY_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
static int rc2_einit(void *ctx, const unsigned char *key, size_t keylen,
|
|
const unsigned char *iv, size_t ivlen,
|
|
const OSSL_PARAM params[])
|
|
{
|
|
if (!ossl_cipher_generic_einit(ctx, key, keylen, iv, ivlen, NULL))
|
|
return 0;
|
|
return rc2_set_ctx_params(ctx, params);
|
|
}
|
|
|
|
static int rc2_dinit(void *ctx, const unsigned char *key, size_t keylen,
|
|
const unsigned char *iv, size_t ivlen,
|
|
const OSSL_PARAM params[])
|
|
{
|
|
if (!ossl_cipher_generic_dinit(ctx, key, keylen, iv, ivlen, NULL))
|
|
return 0;
|
|
return rc2_set_ctx_params(ctx, params);
|
|
}
|
|
|
|
static int rc2_get_ctx_params(void *vctx, OSSL_PARAM params[])
|
|
{
|
|
PROV_RC2_CTX *ctx = (PROV_RC2_CTX *)vctx;
|
|
OSSL_PARAM *p;
|
|
|
|
if (!ossl_cipher_generic_get_ctx_params(vctx, params))
|
|
return 0;
|
|
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RC2_KEYBITS);
|
|
if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->key_bits)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
|
|
return 0;
|
|
}
|
|
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS);
|
|
if (p != NULL) {
|
|
long num;
|
|
int i;
|
|
ASN1_TYPE *type;
|
|
unsigned char *d = p->data;
|
|
unsigned char **dd = d == NULL ? NULL : &d;
|
|
|
|
if (p->data_type != OSSL_PARAM_OCTET_STRING) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
|
|
return 0;
|
|
}
|
|
if ((type = ASN1_TYPE_new()) == NULL) {
|
|
ERR_raise(ERR_LIB_PROV, ERR_R_ASN1_LIB);
|
|
return 0;
|
|
}
|
|
|
|
/* Is this the original IV or the running IV? */
|
|
num = rc2_keybits_to_magic(ctx->key_bits);
|
|
if (!ASN1_TYPE_set_int_octetstring(type, num,
|
|
ctx->base.iv, ctx->base.ivlen)) {
|
|
ASN1_TYPE_free(type);
|
|
ERR_raise(ERR_LIB_PROV, ERR_R_ASN1_LIB);
|
|
return 0;
|
|
}
|
|
/*
|
|
* IF the caller has a buffer, we pray to the gods they got the
|
|
* size right. There's no way to tell the i2d functions...
|
|
*/
|
|
i = i2d_ASN1_TYPE(type, dd);
|
|
if (i >= 0)
|
|
p->return_size = (size_t)i;
|
|
|
|
ASN1_TYPE_free(type);
|
|
if (i < 0) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int rc2_set_ctx_params(void *vctx, const OSSL_PARAM params[])
|
|
{
|
|
PROV_RC2_CTX *ctx = (PROV_RC2_CTX *)vctx;
|
|
const OSSL_PARAM *p;
|
|
|
|
if (params == NULL)
|
|
return 1;
|
|
|
|
if (!ossl_cipher_var_keylen_set_ctx_params(vctx, params))
|
|
return 0;
|
|
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_RC2_KEYBITS);
|
|
if (p != NULL) {
|
|
if (!OSSL_PARAM_get_size_t(p, &ctx->key_bits)) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
|
|
return 0;
|
|
}
|
|
}
|
|
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS);
|
|
if (p != NULL) {
|
|
ASN1_TYPE *type = NULL;
|
|
long num = 0;
|
|
const unsigned char *d = p->data;
|
|
int ret = 1;
|
|
unsigned char iv[16];
|
|
|
|
if (p->data_type != OSSL_PARAM_OCTET_STRING
|
|
|| ctx->base.ivlen > sizeof(iv)
|
|
|| (type = d2i_ASN1_TYPE(NULL, &d, p->data_size)) == NULL
|
|
|| ((size_t)ASN1_TYPE_get_int_octetstring(type, &num, iv,
|
|
ctx->base.ivlen)
|
|
!= ctx->base.ivlen)
|
|
|| !ossl_cipher_generic_initiv(&ctx->base, iv, ctx->base.ivlen)
|
|
|| (ctx->key_bits = rc2_magic_to_keybits(num)) == 0) {
|
|
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
|
|
ret = 0;
|
|
}
|
|
ASN1_TYPE_free(type);
|
|
if (ret == 0)
|
|
return 0;
|
|
/*
|
|
* This code assumes that the caller will call
|
|
* EVP_CipherInit_ex() with a non NULL key in order to setup a key that
|
|
* uses the keylen and keybits that were set here.
|
|
*/
|
|
ctx->base.keylen = ctx->key_bits / 8;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(rc2)
|
|
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, NULL),
|
|
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS, NULL, 0),
|
|
CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(rc2)
|
|
|
|
CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(rc2)
|
|
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
|
|
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_RC2_KEYBITS, NULL),
|
|
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_ALGORITHM_ID_PARAMS, NULL, 0),
|
|
CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(rc2)
|
|
|
|
#define IMPLEMENT_cipher(alg, UCALG, lcmode, UCMODE, flags, kbits, blkbits, \
|
|
ivbits, typ) \
|
|
static OSSL_FUNC_cipher_get_params_fn alg##_##kbits##_##lcmode##_get_params; \
|
|
static int alg##_##kbits##_##lcmode##_get_params(OSSL_PARAM params[]) \
|
|
{ \
|
|
return ossl_cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, \
|
|
flags, kbits, blkbits, ivbits); \
|
|
} \
|
|
static OSSL_FUNC_cipher_newctx_fn alg##_##kbits##_##lcmode##_newctx; \
|
|
static void *alg##_##kbits##_##lcmode##_newctx(void *provctx) \
|
|
{ \
|
|
PROV_##UCALG##_CTX *ctx; \
|
|
if (!ossl_prov_is_running()) \
|
|
return NULL; \
|
|
ctx = OPENSSL_zalloc(sizeof(*ctx)); \
|
|
if (ctx != NULL) { \
|
|
ossl_cipher_generic_initkey(ctx, kbits, blkbits, ivbits, \
|
|
EVP_CIPH_##UCMODE##_MODE, flags, \
|
|
ossl_prov_cipher_hw_##alg##_##lcmode(kbits), \
|
|
NULL); \
|
|
ctx->key_bits = kbits; \
|
|
} \
|
|
return ctx; \
|
|
} \
|
|
const OSSL_DISPATCH ossl_##alg##kbits##lcmode##_functions[] = { \
|
|
{ OSSL_FUNC_CIPHER_NEWCTX, \
|
|
(void (*)(void)) alg##_##kbits##_##lcmode##_newctx }, \
|
|
{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void)) alg##_freectx }, \
|
|
{ OSSL_FUNC_CIPHER_DUPCTX, (void (*)(void)) alg##_dupctx }, \
|
|
{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))rc2_einit }, \
|
|
{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))rc2_dinit }, \
|
|
{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))ossl_cipher_generic_##typ##_update },\
|
|
{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))ossl_cipher_generic_##typ##_final }, \
|
|
{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))ossl_cipher_generic_cipher }, \
|
|
{ OSSL_FUNC_CIPHER_GET_PARAMS, \
|
|
(void (*)(void)) alg##_##kbits##_##lcmode##_get_params }, \
|
|
{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
|
|
(void (*)(void))ossl_cipher_generic_gettable_params }, \
|
|
{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS, \
|
|
(void (*)(void))rc2_get_ctx_params }, \
|
|
{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
|
|
(void (*)(void))rc2_gettable_ctx_params }, \
|
|
{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
|
|
(void (*)(void))rc2_set_ctx_params }, \
|
|
{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
|
|
(void (*)(void))rc2_settable_ctx_params }, \
|
|
OSSL_DISPATCH_END \
|
|
};
|
|
|
|
/* ossl_rc2128ecb_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, ecb, ECB, RC2_FLAGS, 128, 64, 0, block)
|
|
/* ossl_rc2128cbc_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 128, 64, 64, block)
|
|
/* ossl_rc240cbc_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 40, 64, 64, block)
|
|
/* ossl_rc264cbc_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 64, 64, 64, block)
|
|
|
|
/* ossl_rc2128ofb128_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, ofb128, OFB, RC2_FLAGS, 128, 8, 64, stream)
|
|
/* ossl_rc2128cfb128_functions */
|
|
IMPLEMENT_cipher(rc2, RC2, cfb128, CFB, RC2_FLAGS, 128, 8, 64, stream)
|