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Diffstat (limited to 'crypto/evp/evp_lib.c')
| -rw-r--r-- | crypto/evp/evp_lib.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/crypto/evp/evp_lib.c b/crypto/evp/evp_lib.c new file mode 100644 index 000000000000..edb28ef38ed7 --- /dev/null +++ b/crypto/evp/evp_lib.c @@ -0,0 +1,279 @@ +/* crypto/evp/evp_lib.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include <stdio.h> +#include "cryptlib.h" +#include <openssl/evp.h> +#include <openssl/objects.h> + +int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) + { + int ret; + + if (c->cipher->set_asn1_parameters != NULL) + ret=c->cipher->set_asn1_parameters(c,type); + else + ret=-1; + return(ret); + } + +int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) + { + int ret; + + if (c->cipher->get_asn1_parameters != NULL) + ret=c->cipher->get_asn1_parameters(c,type); + else + ret=-1; + return(ret); + } + +int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) + { + int i=0; + unsigned int l; + + if (type != NULL) + { + l=EVP_CIPHER_CTX_iv_length(c); + OPENSSL_assert(l <= sizeof(c->iv)); + i=ASN1_TYPE_get_octetstring(type,c->oiv,l); + if (i != (int)l) + return(-1); + else if (i > 0) + memcpy(c->iv,c->oiv,l); + } + return(i); + } + +int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) + { + int i=0; + unsigned int j; + + if (type != NULL) + { + j=EVP_CIPHER_CTX_iv_length(c); + OPENSSL_assert(j <= sizeof(c->iv)); + i=ASN1_TYPE_set_octetstring(type,c->oiv,j); + } + return(i); + } + +/* Convert the various cipher NIDs and dummies to a proper OID NID */ +int EVP_CIPHER_type(const EVP_CIPHER *ctx) +{ + int nid; + ASN1_OBJECT *otmp; + nid = EVP_CIPHER_nid(ctx); + + switch(nid) { + + case NID_rc2_cbc: + case NID_rc2_64_cbc: + case NID_rc2_40_cbc: + + return NID_rc2_cbc; + + case NID_rc4: + case NID_rc4_40: + + return NID_rc4; + + case NID_aes_128_cfb128: + case NID_aes_128_cfb8: + case NID_aes_128_cfb1: + + return NID_aes_128_cfb128; + + case NID_aes_192_cfb128: + case NID_aes_192_cfb8: + case NID_aes_192_cfb1: + + return NID_aes_192_cfb128; + + case NID_aes_256_cfb128: + case NID_aes_256_cfb8: + case NID_aes_256_cfb1: + + return NID_aes_256_cfb128; + + case NID_des_cfb64: + case NID_des_cfb8: + case NID_des_cfb1: + + return NID_des_cfb64; + + default: + /* Check it has an OID and it is valid */ + otmp = OBJ_nid2obj(nid); + if(!otmp || !otmp->data) nid = NID_undef; + ASN1_OBJECT_free(otmp); + return nid; + } +} + +int EVP_CIPHER_block_size(const EVP_CIPHER *e) + { + return e->block_size; + } + +int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) + { + return ctx->cipher->block_size; + } + +int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) + { + return ctx->cipher->do_cipher(ctx,out,in,inl); + } + +const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) + { + return ctx->cipher; + } + +unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) + { + return cipher->flags; + } + +unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) + { + return ctx->cipher->flags; + } + +void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) + { + return ctx->app_data; + } + +void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) + { + ctx->app_data = data; + } + +int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) + { + return cipher->iv_len; + } + +int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) + { + return ctx->cipher->iv_len; + } + +int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) + { + return cipher->key_len; + } + +int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) + { + return ctx->key_len; + } + +int EVP_CIPHER_nid(const EVP_CIPHER *cipher) + { + return cipher->nid; + } + +int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) + { + return ctx->cipher->nid; + } + +int EVP_MD_block_size(const EVP_MD *md) + { + return md->block_size; + } + +int EVP_MD_type(const EVP_MD *md) + { + return md->type; + } + +int EVP_MD_pkey_type(const EVP_MD *md) + { + return md->pkey_type; + } + +int EVP_MD_size(const EVP_MD *md) + { + return md->md_size; + } + +const EVP_MD * EVP_MD_CTX_md(const EVP_MD_CTX *ctx) + { + return ctx->digest; + } + +void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags) + { + ctx->flags |= flags; + } + +void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags) + { + ctx->flags &= ~flags; + } + +int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) + { + return (ctx->flags & flags); + } |