小编Rus*_*ill的帖子

我一直用这个把头撞在墙上.我需要对我的iPhone应用程序进行编码,以便在ECB模式下使用3DES加密4位"引脚",以便传输到我认为是用.NET编写的Web服务.

+ (NSData *)TripleDESEncryptWithKey:(NSString *)key dataToEncrypt:(NSData*)encryptData {
NSLog(@"kCCKeySize3DES=%d", kCCKeySize3DES);
char keyBuffer[kCCKeySize3DES+1]; // room for terminator (unused)
bzero( keyBuffer, sizeof(keyBuffer) ); // fill with zeroes (for padding)

[key getCString: keyBuffer maxLength: sizeof(keyBuffer) encoding: NSUTF8StringEncoding];

// encrypts in-place, since this is a mutable data object
size_t numBytesEncrypted = 0;

size_t returnLength = ([encryptData length] + kCCBlockSize3DES) & ~(kCCBlockSize3DES - 1);

// NSMutableData* returnBuffer = [NSMutableData dataWithLength:returnLength];
char* returnBuffer = malloc(returnLength * sizeof(uint8_t) );

CCCryptorStatus ccStatus = CCCrypt(kCCEncrypt, kCCAlgorithm3DES , kCCOptionECBMode,
                                 keyBuffer, kCCKeySize3DES, …