openssl/providers/implementations/ciphers/cipher_cast5.c
Shane Lontis 95cf64404c Fix incorrect default keysize for CAST ofb and cfb modes.
Fixes #11459

It was incorrectly using 8 bytes instead of 16 as the default.
This was verified by expanding the macros used in e_cast.c.
The issue occurs if EVP_CIPHER_CTX_set_key_length() is not called.
evp_test.c hides this issue as it always calls EVP_CIPHER_CTX_set_key_length() before
using EVP_CipherInit_ex(...., key, ..).

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11707)
2020-05-05 09:38:08 +10:00

56 lines
1.6 KiB
C

/*
* Copyright 2019-2020 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
*/
/*
* CAST low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
/* Dispatch functions for cast cipher modes ecb, cbc, ofb, cfb */
#include "cipher_cast.h"
#include "prov/implementations.h"
#include "prov/providercommonerr.h"
#define CAST5_FLAGS (EVP_CIPH_VARIABLE_LENGTH)
static OSSL_OP_cipher_freectx_fn cast5_freectx;
static OSSL_OP_cipher_dupctx_fn cast5_dupctx;
static void cast5_freectx(void *vctx)
{
PROV_CAST_CTX *ctx = (PROV_CAST_CTX *)vctx;
OPENSSL_clear_free(ctx, sizeof(*ctx));
}
static void *cast5_dupctx(void *ctx)
{
PROV_CAST_CTX *in = (PROV_CAST_CTX *)ctx;
PROV_CAST_CTX *ret = OPENSSL_malloc(sizeof(*ret));
if (ret == NULL) {
ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
return NULL;
}
*ret = *in;
return ret;
}
/* cast5128ecb_functions */
IMPLEMENT_var_keylen_cipher(cast5, CAST, ecb, ECB, CAST5_FLAGS, 128, 64, 0, block)
/* cast5128cbc_functions */
IMPLEMENT_var_keylen_cipher(cast5, CAST, cbc, CBC, CAST5_FLAGS, 128, 64, 64, block)
/* cast5128ofb64_functions */
IMPLEMENT_var_keylen_cipher(cast5, CAST, ofb64, OFB, CAST5_FLAGS, 128, 8, 64, stream)
/* cast5128cfb64_functions */
IMPLEMENT_var_keylen_cipher(cast5, CAST, cfb64, CFB, CAST5_FLAGS, 128, 8, 64, stream)