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95 lines
2.0 KiB
C++
Executable File
95 lines
2.0 KiB
C++
Executable File
// HmacSha1.cpp
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#include "StdAfx.h"
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#include <string.h>
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#include "../../../C/CpuArch.h"
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#include "HmacSha1.h"
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namespace NCrypto {
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namespace NSha1 {
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void CHmac::SetKey(const Byte *key, size_t keySize)
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{
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MY_ALIGN (16)
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UInt32 temp[SHA1_NUM_BLOCK_WORDS];
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size_t i;
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for (i = 0; i < SHA1_NUM_BLOCK_WORDS; i++)
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temp[i] = 0;
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if (keySize > kBlockSize)
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{
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_sha.Init();
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_sha.Update(key, keySize);
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_sha.Final((Byte *)temp);
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}
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else
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memcpy(temp, key, keySize);
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for (i = 0; i < SHA1_NUM_BLOCK_WORDS; i++)
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temp[i] ^= 0x36363636;
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_sha.Init();
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_sha.Update((const Byte *)temp, kBlockSize);
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for (i = 0; i < SHA1_NUM_BLOCK_WORDS; i++)
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temp[i] ^= 0x36363636 ^ 0x5C5C5C5C;
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_sha2.Init();
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_sha2.Update((const Byte *)temp, kBlockSize);
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}
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void CHmac::Final(Byte *mac)
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{
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_sha.Final(mac);
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_sha2.Update(mac, kDigestSize);
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_sha2.Final(mac);
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}
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void CHmac::GetLoopXorDigest1(void *mac, UInt32 numIteration)
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{
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MY_ALIGN (16) UInt32 block [SHA1_NUM_BLOCK_WORDS];
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MY_ALIGN (16) UInt32 block2[SHA1_NUM_BLOCK_WORDS];
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MY_ALIGN (16) UInt32 mac2 [SHA1_NUM_BLOCK_WORDS];
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_sha. PrepareBlock((Byte *)block, SHA1_DIGEST_SIZE);
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_sha2.PrepareBlock((Byte *)block2, SHA1_DIGEST_SIZE);
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block[0] = ((const UInt32 *)mac)[0];
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block[1] = ((const UInt32 *)mac)[1];
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block[2] = ((const UInt32 *)mac)[2];
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block[3] = ((const UInt32 *)mac)[3];
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block[4] = ((const UInt32 *)mac)[4];
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mac2[0] = block[0];
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mac2[1] = block[1];
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mac2[2] = block[2];
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mac2[3] = block[3];
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mac2[4] = block[4];
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for (UInt32 i = 0; i < numIteration; i++)
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{
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_sha. GetBlockDigest((const Byte *)block, (Byte *)block2);
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_sha2.GetBlockDigest((const Byte *)block2, (Byte *)block);
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mac2[0] ^= block[0];
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mac2[1] ^= block[1];
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mac2[2] ^= block[2];
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mac2[3] ^= block[3];
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mac2[4] ^= block[4];
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}
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((UInt32 *)mac)[0] = mac2[0];
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((UInt32 *)mac)[1] = mac2[1];
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((UInt32 *)mac)[2] = mac2[2];
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((UInt32 *)mac)[3] = mac2[3];
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((UInt32 *)mac)[4] = mac2[4];
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}
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}}
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