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Diffstat (limited to 'engines/ccgost/gost89.h')
| -rw-r--r-- | engines/ccgost/gost89.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/engines/ccgost/gost89.h b/engines/ccgost/gost89.h new file mode 100644 index 0000000000..2157852519 --- /dev/null +++ b/engines/ccgost/gost89.h @@ -0,0 +1,96 @@ +/********************************************************************** + * gost89.h * + * Copyright (c) 2005-2006 Cryptocom LTD * + * This file is distributed under the same license as OpenSSL * + * * + * Declarations for GOST 28147-89 encryption algorithm * + * No OpenSSL libraries required to compile and use * + * this code * + **********************************************************************/ +#ifndef GOST89_H +#define GOST89_H + +/* Typedef for unsigned 32-bit integer */ +#if __LONG_MAX__ > 2147483647L +typedef unsigned int u4; +#else +typedef unsigned long u4; +#endif +/* Typedef for unsigned 8-bit integer */ +typedef unsigned char byte; + +/* Internal representation of GOST substitution blocks */ +typedef struct { + byte k8[16]; + byte k7[16]; + byte k6[16]; + byte k5[16]; + byte k4[16]; + byte k3[16]; + byte k2[16]; + byte k1[16]; +} gost_subst_block; + + +/* Cipher context includes key and preprocessed substitution block */ +typedef struct { + u4 k[8]; + /* Constant s-boxes -- set up in gost_init(). */ + u4 k87[256],k65[256],k43[256],k21[256]; +} gost_ctx; +/* Note: encrypt and decrypt expect full blocks--padding blocks is + caller's responsibility. All bulk encryption is done in + ECB mode by these calls. Other modes may be added easily + enough. */ +/* Encrypt several full blocks in ECB mode */ +void gost_enc(gost_ctx *ctx, const byte *clear,byte *cipher, int blocks); +/* Decrypt several full blocks in ECB mode */ +void gost_dec(gost_ctx *ctx, const byte *cipher,byte *clear, int blocks); +/* Encrypts several full blocks in CFB mode using 8byte IV */ +void gost_enc_cfb(gost_ctx *ctx,const byte *iv,const byte *clear,byte *cipher,int blocks); +/* Decrypts several full blocks in CFB mode using 8byte IV */ +void gost_dec_cfb(gost_ctx *ctx,const byte *iv,const byte *cipher,byte *clear,int blocks); + +/* Encrypt one block */ +void gostcrypt(gost_ctx *c, const byte *in, byte *out); +/* Decrypt one block */ +void gostdecrypt(gost_ctx *c, const byte *in,byte *out); +/* Set key into context */ +void gost_key(gost_ctx *ctx, const byte *key); +/* Get key from context */ +void gost_get_key(gost_ctx *ctx, byte *key); +/* Set S-blocks into context */ +void gost_init(gost_ctx *ctx, const gost_subst_block *subst_block); +/* Clean up context */ +void gost_destroy(gost_ctx *ctx); +/* Intermediate function used for calculate hash */ +void gost_enc_with_key(gost_ctx *,byte *key,byte *inblock,byte *outblock); +/* Compute MAC of given length in bits from data */ +int gost_mac(gost_ctx *ctx,int hmac_len,const unsigned char *data, + unsigned int data_len,unsigned char *hmac) ; +/* Compute MAC of given length in bits from data, using non-zero 8-byte + * IV (non-standard, for use in CryptoPro key transport only */ +int gost_mac_iv(gost_ctx *ctx,int hmac_len,const unsigned char *iv,const unsigned char *data, + unsigned int data_len,unsigned char *hmac) ; +/* Perform one step of MAC calculation like gostcrypt */ +void mac_block(gost_ctx *c,byte *buffer,const byte *block); +/* Extracts MAC value from mac state buffer */ +void get_mac(byte *buffer,int nbits,byte *out); +/* Implements cryptopro key meshing algorithm. Expect IV to be 8-byte size*/ +void cryptopro_key_meshing(gost_ctx *ctx, unsigned char *iv); +/* Parameter sets specified in RFC 4357 */ +extern gost_subst_block GostR3411_94_TestParamSet; +extern gost_subst_block GostR3411_94_CryptoProParamSet; +extern gost_subst_block Gost28147_TestParamSet; +extern gost_subst_block Gost28147_CryptoProParamSetA; +extern gost_subst_block Gost28147_CryptoProParamSetB; +extern gost_subst_block Gost28147_CryptoProParamSetC; +extern gost_subst_block Gost28147_CryptoProParamSetD; +extern const byte CryptoProKeyMeshingKey[]; +#if __LONG_MAX__ > 2147483647L +typedef unsigned int word32; +#else +typedef unsigned long word32; +#endif + +#endif |