/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.*/
VOID MD5_Update (MD5_CTX * context, BYTE * input, UINT inputLen)
{
UINT i, index, partLen;
// Compute number of bytes (that we already had) mod 64
index = (UINT)((context->count[0] >> 3) & 0x3F);
// Update number of bits
if ((context->count[0] += ((DWORD)inputLen << 3)) < ((DWORD)inputLen << 3))
context->count[1]++;
context->count[1] += ((DWORD)inputLen >> 29);
// partLen is the number of bytes we need to fill the buffer. It is possible that
// there are bytes left to process
partLen = 64 - index;
// Transform as many times as possible
if (inputLen >= partLen) {
MD5_memcpy((BYTE *)&context->buffer[index], (BYTE *)input, partLen);
MD5_Transform (context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
MD5_Transform (context->state, &input[i]);
index = 0;
}
else
i = 0;
// Buffer remaining input that we could not process
MD5_memcpy((BYTE *)&context->buffer[index], (BYTE *)&input[i], inputLen-i);
}
/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
static kvoid MD5Update (MD5_CTX *context, const kuchar *input, kuint inputLen)
{
kuint i, index, partLen;
/* Compute number of bytes mod 64 */
index = (kuint)((context->count[0] >> 3) & 0x3F);
/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
< ((UINT4)inputLen << 3))
context->count[1]++;
context->count[1] += ((UINT4)inputLen >> 29);
partLen = 64 - index;
/* Transform as many times as possible.
*/
if (inputLen >= partLen) {
MD5_memcpy
((POINTER)&context->buffer[index], (POINTER)input, partLen);
MD5Transform (context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
MD5Transform (context->state, &input[i]);
index = 0;
}
else
i = 0;
/* Buffer remaining input */
MD5_memcpy
((POINTER)&context->buffer[index], (POINTER)&input[i],
inputLen-i);
}
//更新函数
void CMD5::MD5Update (unsigned char * input, unsigned int inputLen)
{
unsigned int i,index,partLen;
index=(unsigned int)((this->count[0]>>3)&0x3F);
if ((count[0]+=((unsigned long int)inputLen<<3))<((unsigned long int)inputLen<<3)) count[1]++;
count[1]+=((unsigned long int)inputLen>>29);
partLen=64-index;
if (inputLen>=partLen)
{
MD5_memcpy((unsigned char*)&buffer[index],(unsigned char *)input,partLen);
MD5Transform(state,buffer);
for (i=partLen;i+63<inputLen;i+=64) MD5Transform(state,&input[i]);
index=0;
}
else i=0;
MD5_memcpy((unsigned char*)&buffer[index],(unsigned char *)&input[i],inputLen-i);
return;
}
/* MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
void MD5Update (MD5_CTX *context, const rho::u8 *input, rho::u32 inputLen)
//context; /* context */
//input; /* input block */
//inputLen; /* length of input block */
{
rho::u32 i, index, partLen;
/* Compute number of bytes mod 64 */
index = (rho::u32)((context->count[0] >> 3) & 0x3F);
/* Update number of bits */
if ((context->count[0] += ((UINT4)inputLen << 3))
< ((UINT4)inputLen << 3))
context->count[1]++;
context->count[1] += ((UINT4)inputLen >> 29);
partLen = 64 - index;
/* Transform as many times as possible.
*/
if (inputLen >= partLen) {
MD5_memcpy
((POINTER)&context->buffer[index], input, partLen);
MD5Transform (context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
MD5Transform (context->state, &input[i]);
index = 0;
}
else
i = 0;
/* Buffer remaining input */
MD5_memcpy
((POINTER)&context->buffer[index], &input[i],
inputLen-i);
}
