3 /**********************************************************************
5 * Copyright (c) 2005-2006 Cryptocom LTD *
6 * This file is distributed under the same license as OpenSSL *
8 * Declaration of the key transport functions for GOST pkey methods *
10 * Requires OpenSSL 0.9.9 for compilation *
11 **********************************************************************/
12 #include <openssl/evp.h>
14 /* EVP_PKEY_METHOD callbacks */
15 /* From gost94_keyx.c */
16 int pkey_GOST94cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
17 int pkey_GOST94cc_encrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * key,size_t key_len);
19 int pkey_GOST94cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
20 int pkey_GOST94cc_decrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * in,size_t in_len);
21 /* From gost2001_keyx.c */
22 int pkey_GOST01cp_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* key, size_t key_len );
23 int pkey_GOST01cc_encrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * key,size_t key_len);
25 int pkey_GOST01cp_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char* in, size_t in_len );
26 int pkey_GOST01cc_decrypt (EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, const unsigned char * in,size_t in_len);
28 /* Internal functions to make error processing happy */
29 int decrypt_cryptocom_key(unsigned char *sess_key,int max_key_len,
30 const unsigned char *crypted_key,int crypted_key_len, gost_ctx *ctx);
31 int encrypt_cryptocom_key(const unsigned char *sess_key,int key_len,
32 unsigned char *crypted_key, gost_ctx *ctx);
33 /*int compute_pair_key_le(unsigned char *pair_key,BIGNUM *pub_key,DH *dh) ;*/
35 * Computes 256 bit key exchange key for CryptoCom variation of GOST 94
38 int make_gost_shared_key(DH *dh,EVP_PKEY *pubk,unsigned char *shared_key) ;
39 DH *make_ephemeral_key(EVP_PKEY *pubk,BIGNUM *ephemeral_key);
40 int make_cp_exchange_key(DH *dh,EVP_PKEY *pubk, unsigned char *shared_key);