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LoadRunner/C语言 实现:SHA1加密

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//sha1.h:对字符串进行sha1加密
#ifndef _SHA1_H_
#define _SHA1_H_
typedef struct SHA1Context{
	unsigned Message_Digest[5];      
	unsigned Length_Low;             
	unsigned Length_High;            
	unsigned char Message_Block[64]; 
	int Message_Block_Index;         
	int Computed;                    
	int Corrupted;                   
} SHA1Context;

void SHA1Reset(SHA1Context *);
int SHA1Result(SHA1Context *);
void SHA1Input( SHA1Context *,const char *,unsigned);
#endif


#define SHA1CircularShift(bits,word) ((((word) << (bits)) & 0xFFFFFFFF) | ((word) >> (32-(bits))))

void SHA1ProcessMessageBlock(SHA1Context *);
void SHA1PadMessage(SHA1Context *);

void SHA1Reset(SHA1Context *context){// 初始化动作
	context->Length_Low             = 0;
	context->Length_High            = 0;
	context->Message_Block_Index    = 0;

	context->Message_Digest[0]      = 0x67452301;
	context->Message_Digest[1]      = 0xEFCDAB89;
	context->Message_Digest[2]      = 0x98BADCFE;
	context->Message_Digest[3]      = 0x10325476;
	context->Message_Digest[4]      = 0xC3D2E1F0;

	context->Computed   = 0;
	context->Corrupted  = 0;
}


int SHA1Result(SHA1Context *context){// 成功返回1,失败返回0
	if (context->Corrupted) {
		return 0;
	}
	if (!context->Computed) {
		SHA1PadMessage(context);
		context->Computed = 1;
	}
	return 1;
}


void SHA1Input(SHA1Context *context,const char *message_array,unsigned length){
	if (!length) return;

	if (context->Computed || context->Corrupted){
		context->Corrupted = 1;
		return;
	}

	while(length-- && !context->Corrupted){
		context->Message_Block[context->Message_Block_Index++] = (*message_array & 0xFF);

		context->Length_Low += 8;

		context->Length_Low &= 0xFFFFFFFF;
		if (context->Length_Low == 0){
			context->Length_High++;
			context->Length_High &= 0xFFFFFFFF;
			if (context->Length_High == 0) context->Corrupted = 1;
		}

		if (context->Message_Block_Index == 64){
			SHA1ProcessMessageBlock(context);
		}
		message_array++;
	}
}

void SHA1ProcessMessageBlock(SHA1Context *context){
	const unsigned K[] = {0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xCA62C1D6 };
	int         t;                
	unsigned    temp;             
	unsigned    W[80];            
	unsigned    A, B, C, D, E;    

	for(t = 0; t < 16; t++) {
	W[t] = ((unsigned) context->Message_Block[t * 4]) << 24;
	W[t] |= ((unsigned) context->Message_Block[t * 4 + 1]) << 16;
	W[t] |= ((unsigned) context->Message_Block[t * 4 + 2]) << 8;
	W[t] |= ((unsigned) context->Message_Block[t * 4 + 3]);
	}
	
	for(t = 16; t < 80; t++)  W[t] = SHA1CircularShift(1,W[t-3] ^ W[t-8] ^ W[t-14] ^ W[t-16]);

	A = context->Message_Digest[0];
	B = context->Message_Digest[1];
	C = context->Message_Digest[2];
	D = context->Message_Digest[3];
	E = context->Message_Digest[4];

	for(t = 0; t < 20; t++) {
		temp =  SHA1CircularShift(5,A) + ((B & C) | ((~B) & D)) + E + W[t] + K[0];
		temp &= 0xFFFFFFFF;
		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];
		temp &= 0xFFFFFFFF;
		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];
		temp &= 0xFFFFFFFF;
		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];
		temp &= 0xFFFFFFFF;
		E = D;
		D = C;
		C = SHA1CircularShift(30,B);
		B = A;
		A = temp;
	}
	context->Message_Digest[0] = (context->Message_Digest[0] + A) & 0xFFFFFFFF;
	context->Message_Digest[1] = (context->Message_Digest[1] + B) & 0xFFFFFFFF;
	context->Message_Digest[2] = (context->Message_Digest[2] + C) & 0xFFFFFFFF;
	context->Message_Digest[3] = (context->Message_Digest[3] + D) & 0xFFFFFFFF;
	context->Message_Digest[4] = (context->Message_Digest[4] + E) & 0xFFFFFFFF;
	context->Message_Block_Index = 0;
}

void SHA1PadMessage(SHA1Context *context){
	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);
		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;
	}
	context->Message_Block[56] = (context->Length_High >> 24 ) & 0xFF;
	context->Message_Block[57] = (context->Length_High >> 16 ) & 0xFF;
	context->Message_Block[58] = (context->Length_High >> 8 ) & 0xFF;
	context->Message_Block[59] = (context->Length_High) & 0xFF;
	context->Message_Block[60] = (context->Length_Low >> 24 ) & 0xFF;
	context->Message_Block[61] = (context->Length_Low >> 16 ) & 0xFF;
	context->Message_Block[62] = (context->Length_Low >> 8 ) & 0xFF;
	context->Message_Block[63] = (context->Length_Low) & 0xFF;

	SHA1ProcessMessageBlock(context);
}

int sha1_hash(const char *source, char *lrvar){// Main
	SHA1Context sha;
	char buf[128];

	SHA1Reset(&sha);
	SHA1Input(&sha, source, strlen(source));

	if (!SHA1Result(&sha)){
		lr_error_message("SHA1 ERROR: Could not compute message digest");
		return -1;
	} else {
		memset(buf,0,sizeof(buf));
		sprintf(buf, "%08X%08X%08X%08X%08X", sha.Message_Digest[0],sha.Message_Digest[1],
		sha.Message_Digest[2],sha.Message_Digest[3],sha.Message_Digest[4]);
		lr_save_string(buf, lrvar);
		return strlen(buf);
	}
}

 将上述源码保存为sha1.h,在LoadRunner调用方法如下:

#include "sha1.h"

Action()
{
    char B[1024]="你好,higkoo!";
    lr_convert_string_encoding(B,LR_ENC_SYSTEM_LOCALE ,LR_ENC_UTF8,"B-utf-8");//这里将字符串B进行了转码,如果不转,LoadRunner中默认是Unicode编码,会导致加密结果跟定义的可能不一致(当然如果你测得程序本身编码就是Unicode编码就不需要执行这一步了。)
    sha1_hash(lr_eval_string("{B-utf-8}"), "SHA1");
    lr_output_message"SHA1加密结果:\nNotify:\t%s", lr_eval_string("{SHA1}") );
    return 0;
}

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