diff options
Diffstat (limited to 'openssl/engines/ccgost/gost89.c')
-rw-r--r-- | openssl/engines/ccgost/gost89.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/openssl/engines/ccgost/gost89.c b/openssl/engines/ccgost/gost89.c new file mode 100644 index 000000000..7ebae0f71 --- /dev/null +++ b/openssl/engines/ccgost/gost89.c @@ -0,0 +1,409 @@ +/********************************************************************** + * gost89.c * + * Copyright (c) 2005-2006 Cryptocom LTD * + * This file is distributed under the same license as OpenSSL * + * * + * Implementation of GOST 28147-89 encryption algorithm * + * No OpenSSL libraries required to compile and use * + * this code * + **********************************************************************/ +#include <string.h> +#include "gost89.h" +/* Substitution blocks from RFC 4357 + + Note: our implementation of gost 28147-89 algorithm + uses S-box matrix rotated 90 degrees counterclockwise, relative to + examples given in RFC. + + +*/ + +/* Substitution blocks from test examples for GOST R 34.11-94*/ +gost_subst_block GostR3411_94_TestParamSet = { + {0X1,0XF,0XD,0X0,0X5,0X7,0XA,0X4,0X9,0X2,0X3,0XE,0X6,0XB,0X8,0XC}, + {0XD,0XB,0X4,0X1,0X3,0XF,0X5,0X9,0X0,0XA,0XE,0X7,0X6,0X8,0X2,0XC}, + {0X4,0XB,0XA,0X0,0X7,0X2,0X1,0XD,0X3,0X6,0X8,0X5,0X9,0XC,0XF,0XE}, + {0X6,0XC,0X7,0X1,0X5,0XF,0XD,0X8,0X4,0XA,0X9,0XE,0X0,0X3,0XB,0X2}, + {0X7,0XD,0XA,0X1,0X0,0X8,0X9,0XF,0XE,0X4,0X6,0XC,0XB,0X2,0X5,0X3}, + {0X5,0X8,0X1,0XD,0XA,0X3,0X4,0X2,0XE,0XF,0XC,0X7,0X6,0X0,0X9,0XB}, + {0XE,0XB,0X4,0XC,0X6,0XD,0XF,0XA,0X2,0X3,0X8,0X1,0X0,0X7,0X5,0X9}, + {0X4,0XA,0X9,0X2,0XD,0X8,0X0,0XE,0X6,0XB,0X1,0XC,0X7,0XF,0X5,0X3} + }; +/* Substitution blocks for hash function 1.2.643.2.9.1.6.1 */ +gost_subst_block GostR3411_94_CryptoProParamSet= { + {0x1,0x3,0xA,0x9,0x5,0xB,0x4,0xF,0x8,0x6,0x7,0xE,0xD,0x0,0x2,0xC}, + {0xD,0xE,0x4,0x1,0x7,0x0,0x5,0xA,0x3,0xC,0x8,0xF,0x6,0x2,0x9,0xB}, + {0x7,0x6,0x2,0x4,0xD,0x9,0xF,0x0,0xA,0x1,0x5,0xB,0x8,0xE,0xC,0x3}, + {0x7,0x6,0x4,0xB,0x9,0xC,0x2,0xA,0x1,0x8,0x0,0xE,0xF,0xD,0x3,0x5}, + {0x4,0xA,0x7,0xC,0x0,0xF,0x2,0x8,0xE,0x1,0x6,0x5,0xD,0xB,0x9,0x3}, + {0x7,0xF,0xC,0xE,0x9,0x4,0x1,0x0,0x3,0xB,0x5,0x2,0x6,0xA,0x8,0xD}, + {0x5,0xF,0x4,0x0,0x2,0xD,0xB,0x9,0x1,0x7,0x6,0x3,0xC,0xE,0xA,0x8}, + {0xA,0x4,0x5,0x6,0x8,0x1,0x3,0x7,0xD,0xC,0xE,0x0,0x9,0x2,0xB,0xF} + } ; + +/* Test paramset from GOST 28147 */ +gost_subst_block Gost28147_TestParamSet = + { + {0xC,0x6,0x5,0x2,0xB,0x0,0x9,0xD,0x3,0xE,0x7,0xA,0xF,0x4,0x1,0x8}, + {0x9,0xB,0xC,0x0,0x3,0x6,0x7,0x5,0x4,0x8,0xE,0xF,0x1,0xA,0x2,0xD}, + {0x8,0xF,0x6,0xB,0x1,0x9,0xC,0x5,0xD,0x3,0x7,0xA,0x0,0xE,0x2,0x4}, + {0x3,0xE,0x5,0x9,0x6,0x8,0x0,0xD,0xA,0xB,0x7,0xC,0x2,0x1,0xF,0x4}, + {0xE,0x9,0xB,0x2,0x5,0xF,0x7,0x1,0x0,0xD,0xC,0x6,0xA,0x4,0x3,0x8}, + {0xD,0x8,0xE,0xC,0x7,0x3,0x9,0xA,0x1,0x5,0x2,0x4,0x6,0xF,0x0,0xB}, + {0xC,0x9,0xF,0xE,0x8,0x1,0x3,0xA,0x2,0x7,0x4,0xD,0x6,0x0,0xB,0x5}, + {0x4,0x2,0xF,0x5,0x9,0x1,0x0,0x8,0xE,0x3,0xB,0xC,0xD,0x7,0xA,0x6} + }; + + + + +/* 1.2.643.2.2.31.1 */ +gost_subst_block Gost28147_CryptoProParamSetA= { + {0xB,0xA,0xF,0x5,0x0,0xC,0xE,0x8,0x6,0x2,0x3,0x9,0x1,0x7,0xD,0x4}, + {0x1,0xD,0x2,0x9,0x7,0xA,0x6,0x0,0x8,0xC,0x4,0x5,0xF,0x3,0xB,0xE}, + {0x3,0xA,0xD,0xC,0x1,0x2,0x0,0xB,0x7,0x5,0x9,0x4,0x8,0xF,0xE,0x6}, + {0xB,0x5,0x1,0x9,0x8,0xD,0xF,0x0,0xE,0x4,0x2,0x3,0xC,0x7,0xA,0x6}, + {0xE,0x7,0xA,0xC,0xD,0x1,0x3,0x9,0x0,0x2,0xB,0x4,0xF,0x8,0x5,0x6}, + {0xE,0x4,0x6,0x2,0xB,0x3,0xD,0x8,0xC,0xF,0x5,0xA,0x0,0x7,0x1,0x9}, + {0x3,0x7,0xE,0x9,0x8,0xA,0xF,0x0,0x5,0x2,0x6,0xC,0xB,0x4,0xD,0x1}, + {0x9,0x6,0x3,0x2,0x8,0xB,0x1,0x7,0xA,0x4,0xE,0xF,0xC,0x0,0xD,0x5} + }; +/* 1.2.643.2.2.31.2 */ +gost_subst_block Gost28147_CryptoProParamSetB= + { + {0x0,0x4,0xB,0xE,0x8,0x3,0x7,0x1,0xA,0x2,0x9,0x6,0xF,0xD,0x5,0xC}, + {0x5,0x2,0xA,0xB,0x9,0x1,0xC,0x3,0x7,0x4,0xD,0x0,0x6,0xF,0x8,0xE}, + {0x8,0x3,0x2,0x6,0x4,0xD,0xE,0xB,0xC,0x1,0x7,0xF,0xA,0x0,0x9,0x5}, + {0x2,0x7,0xC,0xF,0x9,0x5,0xA,0xB,0x1,0x4,0x0,0xD,0x6,0x8,0xE,0x3}, + {0x7,0x5,0x0,0xD,0xB,0x6,0x1,0x2,0x3,0xA,0xC,0xF,0x4,0xE,0x9,0x8}, + {0xE,0xC,0x0,0xA,0x9,0x2,0xD,0xB,0x7,0x5,0x8,0xF,0x3,0x6,0x1,0x4}, + {0x0,0x1,0x2,0xA,0x4,0xD,0x5,0xC,0x9,0x7,0x3,0xF,0xB,0x8,0x6,0xE}, + {0x8,0x4,0xB,0x1,0x3,0x5,0x0,0x9,0x2,0xE,0xA,0xC,0xD,0x6,0x7,0xF} + }; +/* 1.2.643.2.2.31.3 */ +gost_subst_block Gost28147_CryptoProParamSetC= + { + {0x7,0x4,0x0,0x5,0xA,0x2,0xF,0xE,0xC,0x6,0x1,0xB,0xD,0x9,0x3,0x8}, + {0xA,0x9,0x6,0x8,0xD,0xE,0x2,0x0,0xF,0x3,0x5,0xB,0x4,0x1,0xC,0x7}, + {0xC,0x9,0xB,0x1,0x8,0xE,0x2,0x4,0x7,0x3,0x6,0x5,0xA,0x0,0xF,0xD}, + {0x8,0xD,0xB,0x0,0x4,0x5,0x1,0x2,0x9,0x3,0xC,0xE,0x6,0xF,0xA,0x7}, + {0x3,0x6,0x0,0x1,0x5,0xD,0xA,0x8,0xB,0x2,0x9,0x7,0xE,0xF,0xC,0x4}, + {0x8,0x2,0x5,0x0,0x4,0x9,0xF,0xA,0x3,0x7,0xC,0xD,0x6,0xE,0x1,0xB}, + {0x0,0x1,0x7,0xD,0xB,0x4,0x5,0x2,0x8,0xE,0xF,0xC,0x9,0xA,0x6,0x3}, + {0x1,0xB,0xC,0x2,0x9,0xD,0x0,0xF,0x4,0x5,0x8,0xE,0xA,0x7,0x6,0x3} + }; + +/* 1.2.643.2.2.31.4 */ +gost_subst_block Gost28147_CryptoProParamSetD= + { + {0x1,0xA,0x6,0x8,0xF,0xB,0x0,0x4,0xC,0x3,0x5,0x9,0x7,0xD,0x2,0xE}, + {0x3,0x0,0x6,0xF,0x1,0xE,0x9,0x2,0xD,0x8,0xC,0x4,0xB,0xA,0x5,0x7}, + {0x8,0x0,0xF,0x3,0x2,0x5,0xE,0xB,0x1,0xA,0x4,0x7,0xC,0x9,0xD,0x6}, + {0x0,0xC,0x8,0x9,0xD,0x2,0xA,0xB,0x7,0x3,0x6,0x5,0x4,0xE,0xF,0x1}, + {0x1,0x5,0xE,0xC,0xA,0x7,0x0,0xD,0x6,0x2,0xB,0x4,0x9,0x3,0xF,0x8}, + {0x1,0xC,0xB,0x0,0xF,0xE,0x6,0x5,0xA,0xD,0x4,0x8,0x9,0x3,0x7,0x2}, + {0xB,0x6,0x3,0x4,0xC,0xF,0xE,0x2,0x7,0xD,0x8,0x0,0x5,0xA,0x9,0x1}, + {0xF,0xC,0x2,0xA,0x6,0x4,0x5,0x0,0x7,0x9,0xE,0xD,0x1,0xB,0x8,0x3} + }; + + +const byte CryptoProKeyMeshingKey[]={ + 0x69, 0x00, 0x72, 0x22, 0x64, 0xC9, 0x04, 0x23, + 0x8D, 0x3A, 0xDB, 0x96, 0x46, 0xE9, 0x2A, 0xC4, + 0x18, 0xFE, 0xAC, 0x94, 0x00, 0xED, 0x07, 0x12, + 0xC0, 0x86, 0xDC, 0xC2, 0xEF, 0x4C, 0xA9, 0x2B + }; +/* Initialization of gost_ctx subst blocks*/ +static void kboxinit(gost_ctx *c, const gost_subst_block *b) + { + int i; + + for (i = 0; i < 256; i++) + { + c->k87[i] = (b->k8[i>>4] <<4 | b->k7 [i &15])<<24; + c->k65[i] = (b->k6[i>>4] << 4 | b->k5 [i &15])<<16; + c->k43[i] = (b->k4[i>>4] <<4 | b->k3 [i &15])<<8; + c->k21[i] = b->k2[i>>4] <<4 | b->k1 [i &15]; + + } + } + +/* Part of GOST 28147 algorithm moved into separate function */ +static word32 f(gost_ctx *c,word32 x) + { + x = c->k87[x>>24 & 255] | c->k65[x>>16 & 255]| + c->k43[x>> 8 & 255] | c->k21[x & 255]; + /* Rotate left 11 bits */ + return x<<11 | x>>(32-11); + } +/* Low-level encryption routine - encrypts one 64 bit block*/ +void gostcrypt(gost_ctx *c, const byte *in, byte *out) + { + register word32 n1, n2; /* As named in the GOST */ + n1 = in[0]|(in[1]<<8)|(in[2]<<16)|(in[3]<<24); + n2 = in[4]|(in[5]<<8)|(in[6]<<16)|(in[7]<<24); + /* Instead of swapping halves, swap names each round */ + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + n2 ^= f(c,n1+c->k[7]); n1 ^= f(c,n2+c->k[6]); + n2 ^= f(c,n1+c->k[5]); n1 ^= f(c,n2+c->k[4]); + n2 ^= f(c,n1+c->k[3]); n1 ^= f(c,n2+c->k[2]); + n2 ^= f(c,n1+c->k[1]); n1 ^= f(c,n2+c->k[0]); + + out[0] = (byte)(n2&0xff); out[1] = (byte)((n2>>8)&0xff); + out[2] = (byte)((n2>>16)&0xff); out[3]=(byte)(n2>>24); + out[4] = (byte)(n1&0xff); out[5] = (byte)((n1>>8)&0xff); + out[6] = (byte)((n1>>16)&0xff); out[7] = (byte)(n1>>24); + } +/* Low-level decryption routine. Decrypts one 64-bit block */ +void gostdecrypt(gost_ctx *c, const byte *in,byte *out) + { + register word32 n1, n2; /* As named in the GOST */ + n1 = in[0]|(in[1]<<8)|(in[2]<<16)|(in[3]<<24); + n2 = in[4]|(in[5]<<8)|(in[6]<<16)|(in[7]<<24); + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + n2 ^= f(c,n1+c->k[7]); n1 ^= f(c,n2+c->k[6]); + n2 ^= f(c,n1+c->k[5]); n1 ^= f(c,n2+c->k[4]); + n2 ^= f(c,n1+c->k[3]); n1 ^= f(c,n2+c->k[2]); + n2 ^= f(c,n1+c->k[1]); n1 ^= f(c,n2+c->k[0]); + + n2 ^= f(c,n1+c->k[7]); n1 ^= f(c,n2+c->k[6]); + n2 ^= f(c,n1+c->k[5]); n1 ^= f(c,n2+c->k[4]); + n2 ^= f(c,n1+c->k[3]); n1 ^= f(c,n2+c->k[2]); + n2 ^= f(c,n1+c->k[1]); n1 ^= f(c,n2+c->k[0]); + + n2 ^= f(c,n1+c->k[7]); n1 ^= f(c,n2+c->k[6]); + n2 ^= f(c,n1+c->k[5]); n1 ^= f(c,n2+c->k[4]); + n2 ^= f(c,n1+c->k[3]); n1 ^= f(c,n2+c->k[2]); + n2 ^= f(c,n1+c->k[1]); n1 ^= f(c,n2+c->k[0]); + + out[0] = (byte)(n2&0xff); out[1] = (byte)((n2>>8)&0xff); + out[2] = (byte)((n2>>16)&0xff); out[3]=(byte)(n2>>24); + out[4] = (byte)(n1&0xff); out[5] = (byte)((n1>>8)&0xff); + out[6] = (byte)((n1>>16)&0xff); out[7] = (byte)(n1>>24); + } + +/* Encrypts several blocks in ECB mode */ +void gost_enc(gost_ctx *c,const byte *clear,byte *cipher, int blocks) + { + int i; + for(i=0;i<blocks;i++) + { + gostcrypt(c,clear,cipher); + clear+=8; + cipher+=8; + } + } +/* Decrypts several blocks in ECB mode */ +void gost_dec(gost_ctx *c, const byte *cipher,byte *clear, int blocks) + { + int i; + for(i=0;i<blocks;i++) + { + gostdecrypt(c,cipher,clear); + clear+=8; + cipher+=8; + } + } + +/* 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) + { + byte cur_iv[8]; + byte gamma[8]; + int i,j; + const byte *in; + byte *out; + memcpy(cur_iv,iv,8); + for(i=0,in=clear,out=cipher;i<blocks;i++,in+=8,out+=8) + { + gostcrypt(ctx,cur_iv,gamma); + for (j=0;j<8;j++) + { + cur_iv[j]=out[j]=in[j]^gamma[j]; + } + } + } +/* 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) + { + byte cur_iv[8]; + byte gamma[8]; + int i,j; + const byte *in; + byte *out; + memcpy(cur_iv,iv,8); + for(i=0,in=cipher,out=clear;i<blocks;i++,in+=8,out+=8) + { + gostcrypt(ctx,cur_iv,gamma); + for (j=0;j<8;j++) + { + out[j]=(cur_iv[j]=in[j])^gamma[j]; + } + } + } + +/* Encrypts one block using specified key */ +void gost_enc_with_key(gost_ctx *c,byte *key,byte *inblock,byte *outblock) + { + gost_key(c,key); + gostcrypt(c,inblock,outblock); + } + +/* Set 256 bit key into context */ +void gost_key(gost_ctx *c, const byte *k) + { + int i,j; + for(i=0,j=0;i<8;i++,j+=4) + { + c->k[i]=k[j]|(k[j+1]<<8)|(k[j+2]<<16)|(k[j+3]<<24); + } + } + +/* Retrieve 256-bit key from context */ +void gost_get_key(gost_ctx *c, byte *k) + { + int i,j; + for(i=0,j=0;i<8;i++,j+=4) + { + k[j]=(byte)(c->k[i]& 0xFF); + k[j+1]=(byte)((c->k[i]>>8 )&0xFF); + k[j+2]=(byte)((c->k[i]>>16) &0xFF); + k[j+3]=(byte)((c->k[i]>>24) &0xFF); + } + } + +/* Initalize context. Provides default value for subst_block */ +void gost_init(gost_ctx *c, const gost_subst_block *b) + { + if(!b) + { + b=&GostR3411_94_TestParamSet; + } + kboxinit(c,b); + } + +/* Cleans up key from context */ +void gost_destroy(gost_ctx *c) + { + int i; for(i=0;i<8;i++) c->k[i]=0; + } + +/* Compute GOST 28147 mac block + * + * Parameters + * gost_ctx *c - context initalized with substitution blocks and key + * buffer - 8-byte mac state buffer + * block 8-byte block to process. + * */ +void mac_block(gost_ctx *c,byte *buffer,const byte *block) + { + register word32 n1, n2; /* As named in the GOST */ + int i; + for (i=0; i<8; i++) + { + buffer[i]^=block[i]; + } + n1 = buffer[0]|(buffer[1]<<8)|(buffer[2]<<16)|(buffer[3]<<24); + n2 = buffer[4]|(buffer[5]<<8)|(buffer[6]<<16)|(buffer[7]<<24); + /* Instead of swapping halves, swap names each round */ + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + n2 ^= f(c,n1+c->k[0]); n1 ^= f(c,n2+c->k[1]); + n2 ^= f(c,n1+c->k[2]); n1 ^= f(c,n2+c->k[3]); + n2 ^= f(c,n1+c->k[4]); n1 ^= f(c,n2+c->k[5]); + n2 ^= f(c,n1+c->k[6]); n1 ^= f(c,n2+c->k[7]); + + buffer[0] = (byte)(n1&0xff); buffer[1] = (byte)((n1>>8)&0xff); + buffer[2] = (byte)((n1>>16)&0xff); buffer[3] = (byte)(n1>>24); + buffer[4] = (byte)(n2&0xff); buffer[5] = (byte)((n2>>8)&0xff); + buffer[6] = (byte)((n2>>16)&0xff); buffer[7] = (byte)(n2>>24); + } + +/* Get mac with specified number of bits from MAC state buffer */ +void get_mac(byte *buffer,int nbits,byte *out) + { + int nbytes= nbits >> 3; + int rembits = nbits & 7; + int mask =rembits?((1<rembits)-1):0; + int i; + for (i=0;i<nbytes;i++) out[i]=buffer[i]; + if (rembits) out[i]=buffer[i]&mask; + } + +/* Compute mac of specified length (in bits) from data. + * Context should be initialized with key and subst blocks */ +int gost_mac(gost_ctx *ctx,int mac_len,const unsigned char *data, + unsigned int data_len,unsigned char *mac) + { + byte buffer[8]={0,0,0,0,0,0,0,0}; + byte buf2[8]; + unsigned int i; + for (i=0;i+8<=data_len;i+=8) + mac_block(ctx,buffer,data+i); + if (i<data_len) + { + memset(buf2,0,8); + memcpy(buf2,data+i,data_len-i); + mac_block(ctx,buffer,buf2); + } + get_mac(buffer,mac_len,mac); + return 1; + } + +/* Compute MAC with non-zero IV. Used in some RFC 4357 algorithms */ +int gost_mac_iv(gost_ctx *ctx,int mac_len,const unsigned char *iv,const unsigned char *data, + unsigned int data_len,unsigned char *mac) + { + byte buffer[8]; + byte buf2[8]; + unsigned int i; + memcpy (buffer,iv,8); + for (i=0;i+8<=data_len;i+=8) + mac_block(ctx,buffer,data+i); + if (i<data_len) + { + memset(buf2,0,8); + memcpy(buf2,data+i,data_len-i); + mac_block(ctx,buffer,buf2); + } + get_mac(buffer,mac_len,mac); + return 1; + } + +/* Implements key meshing algorithm by modifing ctx and IV in place */ +void cryptopro_key_meshing(gost_ctx *ctx, unsigned char *iv) + { + unsigned char newkey[32],newiv[8]; + /* Set static keymeshing key */ + /* "Decrypt" key with keymeshing key */ + gost_dec(ctx,CryptoProKeyMeshingKey,newkey,4); + /* set new key */ + gost_key(ctx,newkey); + /* Encrypt iv with new key */ + gostcrypt(ctx,iv,newiv); + memcpy(iv,newiv,8); + } |