iOS DES ECB 模式加密

//iOS DES  ECB 模式加密
#import <CommonCrypto/CommonCryptor.h>


static Byte iv[] = {,,,,,,,};

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

 {

         NSString *ciphertext = nil;

         const char *textBytes = [plainText UTF8String];

         NSUInteger dataLength = [plainText length];

        unsigned char buffer[];

         memset(buffer, , sizeof(char));

         size_t numBytesEncrypted = ;

         CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt, kCCAlgorithmDES,

                                                                                            kCCOptionECBMode|kCCOptionPKCS7Padding,  //kCCOptionECBMode  kCCOptionPKCS7Padding

                                                                                            [key UTF8String], kCCKeySizeDES,

                                                                                            iv,

                                                                                          textBytes, dataLength,

                                                                                            buffer, ,

                                                                                            &numBytesEncrypted);
            if (cryptStatus == kCCSuccess) {

                 NSData *data = [NSData dataWithBytes:buffer length:(NSUInteger)numBytesEncrypted];
                //NSLog(@"ssf:%s",buffer);
                ciphertext = [ViewController base64Encoding:data];
               // NSData *data = [NSData dataWithBytes:buffer length:(NSUInteger)numBytesEncrypted];
                //        Byte* bb = (Byte*)[data bytes];
                //        ciphertext = [self parseByteArray2HexString:bb];

             }

         return ciphertext;

}

 static const char encodingTable[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

+(NSString *)base64Encoding:(NSData*) text
{
    if (text.length == )
        return @"";

    char *characters = malloc(text.length*/);

    if (characters == NULL)
        return @"";

    int end = text.length - ;
    int index = ;
    int charCount = ;
    int n = ;

    while (index <= end) {
        int d = (((int)(((char *)[text bytes])[index]) & 0x0ff) << )
        | (((int)(((char *)[text bytes])[index + ]) & 0x0ff) << )
        | ((int)(((char *)[text bytes])[index + ]) & 0x0ff);

        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[d & ];

        index += ;

        if(n++ >= )
        {
            n = ;
            characters[charCount++] = ' ';
        }
    }

    if(index == text.length - )
    {
        int d = (((int)(((char *)[text bytes])[index]) & 0x0ff) << )
        | (((int)(((char *)[text bytes])[index + ]) & ) << );
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = '=';
    }
    else if(index == text.length - )
    {
        int d = ((int)(((char *)[text bytes])[index]) & 0x0ff) << ;
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = encodingTable[(d >> ) & ];
        characters[charCount++] = '=';
        characters[charCount++] = '=';
    }
    NSString * rtnStr = [[NSString alloc] initWithBytesNoCopy:characters length:charCount encoding:NSUTF8StringEncoding freeWhenDone:YES];
    return rtnStr;
}