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update sm_standard

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[GGSuchao]
2017-07-10 10:20:40 +08:00
committed by GGSuchao
parent 1f283cb9b3
commit d9317d827e
1 changed files with 0 additions and 368 deletions
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368
crypto/sm3/sm3_standard.c
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@@ -1,368 +0,0 @@
#include "openssl/sm3_standard.h"
/****************************************************************
Function: BiToW
Description: calculate W from Bi
Calls:
Called By: SM3_compress
Input: Bi[16] //a block of a message
Output: W[64]
Return: null
Others:
****************************************************************/
void BiToW(unsigned int Bi[], unsigned int W[])
{
int i;
unsigned int tmp;
for (i = 0; i <= 15; i++)
{
W[i] = Bi[i];
}
for (i = 16; i <= 67; i++)
{
tmp = W[i - 16]
^ W[i - 9]
^ SM3_rotl32(W[i - 3], 15);
W[i] = SM3_p1(tmp)
^ (SM3_rotl32(W[i - 13], 7))
^ W[i - 6];
}
}
/*****************************************************************
Function: WToW1
Description: calculate W1 from W
Calls:
Called By: SM3_compress
Input: W[64]
Output: W1[64]
Return: null
Others:
*****************************************************************/
void WToW1(unsigned int W[], unsigned int W1[])
{
int i;
for (i = 0; i <= 63; i++)
{
W1[i] = W[i] ^ W[i + 4];
}
}
/******************************************************************
Function: CF
Description: calculate the CF compress function and update V
Calls:
Called By: SM3_compress
Input: W[64]
W1[64]
V[8]
Output: V[8]
Return: null
Others:
********************************************************************/
void CF(unsigned int W[], unsigned int W1[], unsigned int V[])
{
unsigned int SS1;
unsigned int SS2;
unsigned int TT1;
unsigned int TT2;
unsigned int A, B, C, D, E, F, G, H;
unsigned int T = SM3_T1;
unsigned int FF;
unsigned int GG;
int j;
//reg init,set ABCDEFGH=V0
A = V[0];
B = V[1];
C = V[2];
D = V[3];
E = V[4];
F = V[5];
G = V[6];
H = V[7];
for (j = 0; j <= 63; j++)
{
//SS1
if (j == 0)
{
T = SM3_T1;
}
else if (j == 16)
{
T = SM3_rotl32(SM3_T2, 16);
}
else
{
T = SM3_rotl32(T, 1);
}
SS1 = SM3_rotl32((SM3_rotl32(A, 12) + E + T), 7);
//SS2
SS2 = SS1^SM3_rotl32(A, 12);
//TT1
if (j <= 15)
{
FF = SM3_ff0(A, B, C);
}
else
{
FF = SM3_ff1(A, B, C);
}
TT1 = FF + D + SS2 + *W1;
W1++;
//TT2
if (j <= 15)
{
GG = SM3_gg0(E, F, G);
}
else
{
GG = SM3_gg1(E, F, G);
}
TT2 = GG + H + SS1 + *W;
W++;
//D
D = C;
//C
C = SM3_rotl32(B, 9);
//B
B = A;
//A
A = TT1;
//H
H = G;
//G
G = SM3_rotl32(F, 19);
//F
F = E;
//E
E = SM3_p0(TT2);
}
//update V
V[0] = A^V[0];
V[1] = B^V[1];
V[2] = C^V[2];
V[3] = D^V[3];
V[4] = E^V[4];
V[5] = F^V[5];
V[6] = G^V[6];
V[7] = H^V[7];
}
/******************************************************************************
Function: BigEndian
Description: U32 endian converse.GM/T 0004-2012 requires to use big-endian.
if CPU uses little-endian, BigEndian function is a necessary
call to change the little-endian format into big-endian format.
Calls:
Called By: SM3_compress, SM3_done
Input: src[bytelen]
bytelen
Output: des[bytelen]
Return: null
Others: src and des could implies the same address
*******************************************************************************/
void BigEndian(unsigned char src[], unsigned int bytelen, unsigned char des[])
{
unsigned char tmp = 0;
unsigned int i = 0;
for (i = 0; i<bytelen / 4; i++)
{
tmp = des[4 * i];
des[4 * i] = src[4 * i + 3];
src[4 * i + 3] = tmp;
tmp = des[4 * i + 1];
des[4 * i + 1] = src[4 * i + 2];
des[4 * i + 2] = tmp;
}
}
/******************************************************************************
Function: SM3_init
Description: initiate SM3 state
Calls:
Called By: SM3_256
Input: SM3_STATE *md
Output: SM3_STATE *md
Return: null
Others:
*******************************************************************************/
void SM3_init(SM3_STATE *md)
{
md->curlen = md->length = 0;
md->state[0] = SM3_IVA;
md->state[1] = SM3_IVB;
md->state[2] = SM3_IVC;
md->state[3] = SM3_IVD;
md->state[4] = SM3_IVE;
md->state[5] = SM3_IVF;
md->state[6] = SM3_IVG;
md->state[7] = SM3_IVH;
}
/******************************************************************************
Function: SM3_compress
Description: compress a single block of message
Calls: BigEndian
BiToW
WToW1
CF
Called By: SM3_256
Input: SM3_STATE *md
Output: SM3_STATE *md
Return: null
Others:
*******************************************************************************/
void SM3_compress(SM3_STATE * md)
{
unsigned int W[68];
unsigned int W1[64];
//if CPU uses little-endian, BigEndian function is a necessary call
BigEndian(md->buf, 64, md->buf);
BiToW((unsigned int *)md->buf, W);
WToW1(W, W1);
CF(W, W1, md->state);
}
/******************************************************************************
Function: SM3_process
Description: compress the first (len/64) blocks of message
Calls: SM3_compress
Called By: SM3_256
Input: SM3_STATE *md
unsigned char buf[len] //the input message
int len //bytelen of message
Output: SM3_STATE *md
Return: null
Others:
*******************************************************************************/
void SM3_process(SM3_STATE * md, unsigned char *buf, int len)
{
while (len--)
{
/* copy byte */
md->buf[md->curlen] = *buf++;
md->curlen++;
/* is 64 bytes full? */
if (md->curlen == 64)
{
SM3_compress(md);
md->length += 512;
md->curlen = 0;
}
}
}
/******************************************************************************
Function: SM3_done
Description: compress the rest message that the SM3_process has left behind
Calls: SM3_compress
Called By: SM3_256
Input: SM3_STATE *md
Output: unsigned char *hash
Return: null
Others:
*******************************************************************************/
void SM3_done(SM3_STATE *md, unsigned char hash[])
{
int i;
unsigned char tmp = 0;
/* increase the bit length of the message */
md->length += md->curlen << 3;
/* append the '1' bit */
md->buf[md->curlen] = 0x80;
md->curlen++;
/* if the length is currently above 56 bytes, appends zeros till
it reaches 64 bytes, compress the current block, creat a new
block by appending zeros and length,and then compress it
*/
if (md->curlen >56)
{
for (; md->curlen < 64;)
{
md->buf[md->curlen] = 0;
md->curlen++;
}
SM3_compress(md);
md->curlen = 0;
}
/* if the length is less than 56 bytes, pad upto 56 bytes of zeroes */
for (; md->curlen < 56;)
{
md->buf[md->curlen] = 0;
md->curlen++;
}
/* since all messages are under 2^32 bits we mark the top bits zero */
for (i = 56; i < 60; i++)
{
md->buf[i] = 0;
}
/* append length */
md->buf[63] = md->length & 0xff;
md->buf[62] = (md->length >> 8) & 0xff;
md->buf[61] = (md->length >> 16) & 0xff;
md->buf[60] = (md->length >> 24) & 0xff;
SM3_compress(md);
/* copy output */
memcpy(hash, md->state, SM3_len / 8);
BigEndian(hash, SM3_len / 8, hash);//if CPU uses little-endian, BigEndian function is a necessary call
}
/******************************************************************************
Function: SM3_256
Description: calculate a hash value from a given message
Calls: SM3_init
SM3_process
SM3_done
Called By:
Input: unsigned char buf[len] //the input message
int len //bytelen of the message
Output: unsigned char hash[32]
Return: null
Others:
*******************************************************************************/
void SM3_256(unsigned char buf[], int len, unsigned char hash[])
{
SM3_STATE md;
SM3_init(&md);
SM3_process(&md, buf, len);
SM3_done(&md, hash);
}