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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@37345 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Tilghman Lesher
2006-07-10 19:05:48 +00:00
parent 4a3e227291
commit 229ab7d9cf
11 changed files with 353 additions and 384 deletions
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252
sha1.c
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@@ -90,23 +90,22 @@ void SHA1ProcessMessageBlock(SHA1Context *);
*/
int SHA1Reset(SHA1Context *context)
{
if (!context)
{
return shaNull;
if (!context) {
return shaNull;
}
context->Length_Low = 0;
context->Length_High = 0;
context->Message_Block_Index = 0;
context->Length_Low = 0;
context->Length_High = 0;
context->Message_Block_Index = 0;
context->Intermediate_Hash[0] = 0x67452301;
context->Intermediate_Hash[1] = 0xEFCDAB89;
context->Intermediate_Hash[2] = 0x98BADCFE;
context->Intermediate_Hash[3] = 0x10325476;
context->Intermediate_Hash[4] = 0xC3D2E1F0;
context->Intermediate_Hash[0] = 0x67452301;
context->Intermediate_Hash[1] = 0xEFCDAB89;
context->Intermediate_Hash[2] = 0x98BADCFE;
context->Intermediate_Hash[3] = 0x10325476;
context->Intermediate_Hash[4] = 0xC3D2E1F0;
context->Computed = 0;
context->Corrupted = 0;
context->Computed = 0;
context->Corrupted = 0;
return shaSuccess;
}
@@ -135,34 +134,27 @@ int SHA1Result( SHA1Context *context,
{
int i;
if (!context || !Message_Digest)
{
return shaNull;
if (!context || !Message_Digest) {
return shaNull;
}
if (context->Corrupted)
{
return context->Corrupted;
if (context->Corrupted) {
return context->Corrupted;
}
if (!context->Computed)
{
SHA1PadMessage(context);
for(i=0; i<64; ++i)
{
/* message may be sensitive, clear it out */
context->Message_Block[i] = 0;
}
context->Length_Low = 0; /* and clear length */
context->Length_High = 0;
context->Computed = 1;
if (!context->Computed) {
SHA1PadMessage(context);
for (i = 0; i < 64; ++i) {
/* message may be sensitive, clear it out */
context->Message_Block[i] = 0;
}
context->Length_Low = 0; /* and clear length */
context->Length_High = 0;
context->Computed = 1;
}
for(i = 0; i < SHA1HashSize; ++i)
{
Message_Digest[i] = context->Intermediate_Hash[i>>2]
>> 8 * ( 3 - ( i & 0x03 ) );
for (i = 0; i < SHA1HashSize; ++i) {
Message_Digest[i] = context->Intermediate_Hash[i >> 2] >> 8 * ( 3 - ( i & 0x03 ) );
}
return shaSuccess;
@@ -188,52 +180,42 @@ int SHA1Result( SHA1Context *context,
* sha Error Code.
*
*/
int SHA1Input( SHA1Context *context,
const uint8_t *message_array,
unsigned length)
int SHA1Input(SHA1Context *context, const uint8_t *message_array, unsigned length)
{
if (!length)
{
return shaSuccess;
if (!length) {
return shaSuccess;
}
if (!context || !message_array)
{
return shaNull;
if (!context || !message_array) {
return shaNull;
}
if (context->Computed)
{
context->Corrupted = shaStateError;
return shaStateError;
if (context->Computed) {
context->Corrupted = shaStateError;
return shaStateError;
}
if (context->Corrupted)
{
return context->Corrupted;
}
while(length-- && !context->Corrupted)
{
context->Message_Block[context->Message_Block_Index++] =
(*message_array & 0xFF);
context->Length_Low += 8;
if (context->Length_Low == 0)
{
context->Length_High++;
if (context->Length_High == 0)
{
/* Message is too long */
context->Corrupted = 1;
}
if (context->Corrupted) {
return context->Corrupted;
}
if (context->Message_Block_Index == 64)
{
SHA1ProcessMessageBlock(context);
}
while (length-- && !context->Corrupted) {
context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);
message_array++;
context->Length_Low += 8;
if (context->Length_Low == 0) {
context->Length_High++;
if (context->Length_High == 0) {
/* Message is too long */
context->Corrupted = 1;
}
}
if (context->Message_Block_Index == 64) {
SHA1ProcessMessageBlock(context);
}
message_array++;
}
return shaSuccess;
@@ -261,30 +243,28 @@ int SHA1Input( SHA1Context *context,
*/
void SHA1ProcessMessageBlock(SHA1Context *context)
{
const uint32_t K[] = { /* Constants defined in SHA-1 */
0x5A827999,
0x6ED9EBA1,
0x8F1BBCDC,
0xCA62C1D6
};
const uint32_t K[] = { /* Constants defined in SHA-1 */
0x5A827999,
0x6ED9EBA1,
0x8F1BBCDC,
0xCA62C1D6
};
int t; /* Loop counter */
uint32_t temp; /* Temporary word value */
uint32_t W[80]; /* Word sequence */
uint32_t A, B, C, D, E; /* Word buffers */
uint32_t temp; /* Temporary word value */
uint32_t W[80]; /* Word sequence */
uint32_t A, B, C, D, E; /* Word buffers */
/*
* Initialize the first 16 words in the array W
*/
for(t = 0; t < 16; t++)
{
W[t] = context->Message_Block[t * 4] << 24;
W[t] |= context->Message_Block[t * 4 + 1] << 16;
W[t] |= context->Message_Block[t * 4 + 2] << 8;
W[t] |= context->Message_Block[t * 4 + 3];
for (t = 0; t < 16; t++) {
W[t] = context->Message_Block[t * 4] << 24;
W[t] |= context->Message_Block[t * 4 + 1] << 16;
W[t] |= context->Message_Block[t * 4 + 2] << 8;
W[t] |= context->Message_Block[t * 4 + 3];
}
for(t = 16; t < 80; t++)
{
for (t = 16; t < 80; t++) {
W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);
}
@@ -294,46 +274,40 @@ void SHA1ProcessMessageBlock(SHA1Context *context)
D = context->Intermediate_Hash[3];
E = context->Intermediate_Hash[4];
for(t = 0; t < 20; t++)
{
temp = SHA1CircularShift(5,A) +
((B & C) | ((~B) & D)) + E + W[t] + K[0];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
for (t = 0; t < 20; t++) {
temp = SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
}
for(t = 20; t < 40; t++)
{
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
for (t = 20; t < 40; t++) {
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[1];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
}
for(t = 40; t < 60; t++)
{
temp = SHA1CircularShift(5,A) +
((B & C) | (B & D) | (C & D)) + E + W[t] + K[2];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
for (t = 40; t < 60; t++) {
temp = SHA1CircularShift(5,A) + ((B & C) | (B & D) | (C & D)) + E + W[t] + K[2];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
}
for(t = 60; t < 80; t++)
{
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
for (t = 60; t < 80; t++) {
temp = SHA1CircularShift(5,A) + (B ^ C ^ D) + E + W[t] + K[3];
E = D;
D = C;
C = SHA1CircularShift(30,B);
B = A;
A = temp;
}
context->Intermediate_Hash[0] += A;
@@ -377,28 +351,22 @@ void SHA1PadMessage(SHA1Context *context)
* block, process it, and then continue padding into a second
* block.
*/
if (context->Message_Block_Index > 55)
{
context->Message_Block[context->Message_Block_Index++] = 0x80;
while(context->Message_Block_Index < 64)
{
context->Message_Block[context->Message_Block_Index++] = 0;
}
if (context->Message_Block_Index > 55) {
context->Message_Block[context->Message_Block_Index++] = 0x80;
while (context->Message_Block_Index < 64) {
context->Message_Block[context->Message_Block_Index++] = 0;
}
SHA1ProcessMessageBlock(context);
SHA1ProcessMessageBlock(context);
while(context->Message_Block_Index < 56)
{
context->Message_Block[context->Message_Block_Index++] = 0;
}
}
else
{
context->Message_Block[context->Message_Block_Index++] = 0x80;
while(context->Message_Block_Index < 56)
{
context->Message_Block[context->Message_Block_Index++] = 0;
}
while (context->Message_Block_Index < 56) {
context->Message_Block[context->Message_Block_Index++] = 0;
}
} else {
context->Message_Block[context->Message_Block_Index++] = 0x80;
while (context->Message_Block_Index < 56) {
context->Message_Block[context->Message_Block_Index++] = 0;
}
}
/*