DES 加密后转16进制输出

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+ (NSString *) encryptUseDES:(NSString *)plainText key:(NSString *)key

{

NSString *ciphertext = nil;

const char *textBytes = [plainTextUTF8String];

size_t dataLength = [plainText length];

//==================

uint8_t *bufferPtr = NULL;

size_t bufferPtrSize = 0;

size_t movedBytes = 0;

bufferPtrSize = (dataLength +kCCBlockSizeDES) & ~(kCCBlockSizeDES -1);

bufferPtr =malloc( bufferPtrSize * sizeof(uint8_t));

memset((void *)bufferPtr,0x0, bufferPtrSize);

NSString *testString = @"f7afc629";

NSData *testData = [testStringdataUsingEncoding: NSUTF8StringEncoding];

Byte *iv = (Byte *)[testDatabytes];

CCCryptorStatus cryptStatus =CCCrypt(kCCEncrypt,kCCAlgorithmDES,

kCCOptionPKCS7Padding,

iv,kCCKeySizeDES,

iv,

textBytes, dataLength,

(void *)bufferPtr, bufferPtrSize,

&movedBytes);

if (cryptStatus == kCCSuccess) {

// NSData *data = [NSData dataWithBytes:(void *)bufferPtr length:(NSUInteger)movedBytes];

//============================test=========

NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding (kCFStringEncodingGB_18030_2000);

NSString *new=[[NSString alloc]initWithData:data encoding:enc];

//===================================================

// char *testbyte=(char *)[data bytes];

//NSData *dd = [NSData dataWithBytes:textBytes length:(NSInteger)movedBytes];

// NSLog(@"%x",[data bytes]);

// int t = sizeof(testbyte);

ciphertext= [desparseByte2HexString:bufferPtr :movedBytes];

NSLog(@"ciphertext==%@",ciphertext);

}

ciphertext=[ciphertextuppercaseString];

return ciphertext ;

}

+(NSString *) parseByte2HexString:(Byte *) bytes :(int)len{

NSString *hexStr = @"";

if(bytes)

{

for(int i=0;i<len;i++)

{

NSString *newHexStr = [NSStringstringWithFormat:@"%x",bytes[i]&0xff];///16进制数

if([newHexStr length]==1)

hexStr = [NSStringstringWithFormat:@"%@0%@",hexStr,newHexStr];

else

hexStr = [NSStringstringWithFormat:@"%@%@",hexStr,newHexStr];

}

NSLog(@"bytes的16进制数为:%@",hexStr);

return hexStr;

}

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