Crypto++的DES加密，Debug版时正常，Release版时不正常？？？？？？

[hua_zhixing_]

Debug版时，加密再解密能得到正确的结果，但Release版时，加密再解密前后结果不一样了。帮忙分析下，谢谢！

用的是zero padding

Win8 + VS2012开发环境

代码如下：

void DES_Process(const char *keyString, byte *block, size_t length, CryptoPP::CipherDir direction){  
	using namespace CryptoPP;  
   
	byte key[DES_EDE3::KEYLENGTH];  
	memset(key, 0, DES_EDE3::KEYLENGTH);
	memcpy(key, keyString, DES_EDE3::KEYLENGTH);  
	BlockTransformation *t = NULL;   

	if(direction == ENCRYPTION)  {
		t = new DES_EDE3_Encryption(key, DES_EDE3::KEYLENGTH);  
	}else  {
		t = new DES_EDE3_Decryption(key, DES_EDE3::KEYLENGTH);  
	}

	int steps = length / t->BlockSize();  
	int offset;

	for(int i=0; i<steps; i++){  
		offset = i * t->BlockSize();  
		t->ProcessBlock(block + offset);		
	}

	delete t; 
}

[hua_zhixing_]

又一个无人问津的贴

[hua_zhixing_]