加密解密DES之Android、IOS、C#实现-白红宇

加密解密DES之Android、IOS、C#实现

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发布时间：2019-06-27

本文共 29340 字，大约阅读时间需要 97 分钟。

Android实现

package com.sto.express.utils;import java.security.MessageDigest;import java.security.spec.AlgorithmParameterSpec;import javax.crypto.Cipher;import javax.crypto.SecretKey;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESKeySpec;import javax.crypto.spec.IvParameterSpec;/** * Des 加密 * * @author qulixuan *  2018-1-18 20:42:41 * Created by Administrator on 2017-09-22. */public class AlgorithmUtil {    private static final String ALGORITHM = "AES";    private static final String TSFMN = "DES/CBC/PKCS5Padding";    private static  AlgorithmParameterSpec iv = null;    public AlgorithmUtil() {    }    //加密    public static String  encrypt(String message, String key) throws Exception {        // 加密key        String firstKey = MD5Utils.digest(key).substring(0, 8).toUpperCase();        String sha1 = getSha1(firstKey);        sha1 = sha1.substring(0, 8).toUpperCase();        byte[] bytes = sha1.getBytes();        //加密iv        String temp1 = MD5Utils.digest(key).substring(0, 8).toUpperCase();        String upperCase = MD5Utils.digest(temp1).toUpperCase().substring(0, 8);        byte[] bytes2 = upperCase.getBytes("ASCII");       // UnsignedBytes        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");        DESKeySpec desKeySpec = new DESKeySpec(bytes);        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");        SecretKey secretKey = keyFactory.generateSecret(desKeySpec);        IvParameterSpec iv = new IvParameterSpec(bytes2);        cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);        byte[] bytes1 = cipher.doFinal(message.getBytes("UTF-8"));        String a = toHexString(bytes1).toUpperCase();        return a;    }    // 解密数据    public static String decrypt(String message, String key) throws Exception {        // 加密key        String firstKey = MD5Utils.digest(key).substring(0, 8).toUpperCase();        String sha1 = getSha1(firstKey);        sha1 = sha1.substring(0, 8).toUpperCase();        byte[] bytes = sha1.getBytes();        //加密iv        String temp1 = MD5Utils.digest(key).substring(0, 8).toUpperCase();        String upperCase = MD5Utils.digest(temp1).toUpperCase().substring(0, 8);        byte[] bytes2 = upperCase.getBytes();        byte[] bytesrc =convertHexString(message);        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");        DESKeySpec desKeySpec = new DESKeySpec(bytes);        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");        SecretKey secretKey = keyFactory.generateSecret(desKeySpec);        IvParameterSpec iv = new IvParameterSpec(bytes2);        cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);        byte[] retByte = cipher.doFinal(bytesrc);        return new String(retByte,"GBK");    }    // int转byte    public static byte[] intToBytes(int value) {        byte[] des = new byte[4];        des[0] = (byte) (value & 0xff);  // 低位(右边)的8个bit位        des[1] = (byte) ((value >> 8) & 0xff); //第二个8 bit位        des[2] = (byte) ((value >> 16) & 0xff); //第三个 8 bit位        /**         * (byte)((value >> 24) & 0xFF);         * value向右移动24位, 然后和0xFF也就是(11111111)进行与运算         * 在内存中生成一个与 value 同类型的值         * 然后把这个值强制转换成byte类型, 再赋值给一个byte类型的变量 des[3]         */        des[3] = (byte) ((value >> 24) & 0xff); //第4个 8 bit位        return des;    }    public static byte[] convertHexString(String ss) {        byte digest[] = new byte[ss.length() / 2];        for (int i = 0; i < digest.length; i++) {            String byteString = ss.substring(2 * i, 2 * i + 2);            int byteValue = Integer.parseInt(byteString, 16);            digest[i] =  (byte)byteValue;        }        return digest;    }    public static String toHexString(byte b[]) {        StringBuffer hexString = new StringBuffer();        for (int i = 0; i < b.length; i++) {            String plainText = Integer.toHexString(0xff & b[i]);            if (plainText.length() < 2)                plainText = "0" + plainText;            hexString.append(plainText);        }        return hexString.toString();    }    public static String getSha1(String str) {        if (null == str || 0 == str.length()) {            return null;        }        char[] hexDigits = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',                'a', 'b', 'c', 'd', 'e', 'f'};        try {            MessageDigest mdTemp = MessageDigest.getInstance("SHA1");            mdTemp.update(str.getBytes("UTF-8"));            byte[] md = mdTemp.digest();            int j = md.length;            char[] buf = new char[j * 2];            int k = 0;            for (int i = 0; i < j; i++) {                byte byte0 = md[i];                buf[k++] = hexDigits[byte0 >>> 4 & 0xf];                buf[k++] = hexDigits[byte0 & 0xf];            }            return new String(buf);        } catch (Exception e) {            e.printStackTrace();        }        return  null;    }}

IOS实现

CocoaSecurity.h

/* CocoaSecurity  1.1  Created by Kelp on 12/5/12. Copyright (c) 2012 Kelp http://kelp.phate.org/ MIT License  CocoaSecurity is core. It provides AES encrypt, AES decrypt, Hash(MD5, HmacMD5, SHA1~SHA512, HmacSHA1~HmacSHA512) messages. */#import 
     
      #import 
      
       #pragma mark - CocoaSecurityResult@interface CocoaSecurityResult : NSObject@property (strong, nonatomic, readonly) NSData *data;@property (strong, nonatomic, readonly) NSString *utf8String;@property (strong, nonatomic, readonly) NSString *hex;@property (strong, nonatomic, readonly) NSString *hexLower;@property (strong, nonatomic, readonly) NSString *base64;- (id)initWithBytes:(unsigned char[])initData length:(NSUInteger)length;@end#pragma mark - CocoaSecurity@interface CocoaSecurity : NSObject#pragma mark - AES Encrypt+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data key:(NSString *)key;+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data hexKey:(NSString *)key hexIv:(NSString *)iv;+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data key:(NSData *)key iv:(NSData *)iv;+ (CocoaSecurityResult *)aesEncryptWithData:(NSData *)data key:(NSData *)key iv:(NSData *)iv;#pragma mark AES Decrypt+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data key:(NSString *)key;+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data hexKey:(NSString *)key hexIv:(NSString *)iv;+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data key:(NSData *)key iv:(NSData *)iv;+ (CocoaSecurityResult *)aesDecryptWithData:(NSData *)data key:(NSData *)key iv:(NSData *)iv;#pragma mark - MD5+ (CocoaSecurityResult *)md5:(NSString *)hashString;+ (CocoaSecurityResult *)md5WithData:(NSData *)hashData;#pragma mark HMAC-MD5+ (CocoaSecurityResult *)hmacMd5:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacMd5WithData:(NSData *)hashData hmacKey:(NSString *)key;#pragma mark - SHA+ (CocoaSecurityResult *)sha1:(NSString *)hashString;+ (CocoaSecurityResult *)sha1WithData:(NSData *)hashData;+ (CocoaSecurityResult *)sha224:(NSString *)hashString;+ (CocoaSecurityResult *)sha224WithData:(NSData *)hashData;+ (CocoaSecurityResult *)sha256:(NSString *)hashString;+ (CocoaSecurityResult *)sha256WithData:(NSData *)hashData;+ (CocoaSecurityResult *)sha384:(NSString *)hashString;+ (CocoaSecurityResult *)sha384WithData:(NSData *)hashData;+ (CocoaSecurityResult *)sha512:(NSString *)hashString;+ (CocoaSecurityResult *)sha512WithData:(NSData *)hashData;#pragma mark HMAC-SHA+ (CocoaSecurityResult *)hmacSha1:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha1WithData:(NSData *)hashData hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha224:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha224WithData:(NSData *)hashData hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha256:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha256WithData:(NSData *)hashData hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha384:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha384WithData:(NSData *)hashData hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha512:(NSString *)hashString hmacKey:(NSString *)key;+ (CocoaSecurityResult *)hmacSha512WithData:(NSData *)hashData hmacKey:(NSString *)key;@end#pragma mark - CocoaSecurityEncoder@interface CocoaSecurityEncoder : NSObject- (NSString *)base64:(NSData *)data;- (NSString *)hex:(NSData *)data useLower:(BOOL)isOutputLower;@end#pragma mark - CocoaSecurityDecoder@interface CocoaSecurityDecoder : NSObject- (NSData *)base64:(NSString *)data;- (NSData *)hex:(NSString *)data;@end

CocoaSecurity.m

////  CocoaSecurity.m////  Created by Kelp on 12/5/12.//  Copyright (c) 2012 Kelp http://kelp.phate.org///  MIT License//#import "CocoaSecurity.h"#import 
     
      #import 
      
       #import "Base64.h"#pragma mark - CocoaSecurity@implementation CocoaSecurity#pragma mark - AES Encrypt// default AES Encrypt, key -> SHA384(key).sub(0, 32), iv -> SHA384(key).sub(32, 16)+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data key:(NSString *)key{    CocoaSecurityResult * sha = [self sha384:key];    NSData *aesKey = [sha.data subdataWithRange:NSMakeRange(0, 32)];    NSData *aesIv = [sha.data subdataWithRange:NSMakeRange(32, 16)];        return [self aesEncrypt:data key:aesKey iv:aesIv];}#pragma mark AES Encrypt 128, 192, 256+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data hexKey:(NSString *)key hexIv:(NSString *)iv{    CocoaSecurityDecoder *decoder = [CocoaSecurityDecoder new];    NSData *aesKey = [decoder hex:key];    NSData *aesIv = [decoder hex:iv];        return [self aesEncrypt:data key:aesKey iv:aesIv];}+ (CocoaSecurityResult *)aesEncrypt:(NSString *)data key:(NSData *)key iv:(NSData *)iv{    return [self aesEncryptWithData:[data dataUsingEncoding:NSUTF8StringEncoding] key:key iv:iv];}+ (CocoaSecurityResult *)aesEncryptWithData:(NSData *)data key:(NSData *)key iv:(NSData *)iv{    // check length of key and iv    if ([iv length] != 16) {        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Length of iv is wrong. Length of iv should be 16(128bits)"                                     userInfo:nil];    }    if ([key length] != 16 && [key length] != 24 && [key length] != 32 ) {        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Length of key is wrong. Length of iv should be 16, 24 or 32(128, 192 or 256bits)"                                     userInfo:nil];    }        // setup output buffer    size_t bufferSize = [data length] + kCCBlockSizeAES128;    void *buffer = malloc(bufferSize);        // do encrypt    size_t encryptedSize = 0;    CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,                                          kCCAlgorithmAES128,                                          kCCOptionPKCS7Padding,                                          [key bytes],     // Key                                          [key length],    // kCCKeySizeAES                                          [iv bytes],       // IV                                          [data bytes],                                          [data length],                                          buffer,                                          bufferSize,                                          &encryptedSize);    if (cryptStatus == kCCSuccess) {        CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:buffer length:encryptedSize];        free(buffer);                return result;    }    else {        free(buffer);        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Encrypt Error!"                                     userInfo:nil];        return nil;    }}#pragma mark - AES Decrypt// default AES Decrypt, key -> SHA384(key).sub(0, 32), iv -> SHA384(key).sub(32, 16)+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data key:(NSString *)key{    CocoaSecurityResult * sha = [self sha384:key];    NSData *aesKey = [sha.data subdataWithRange:NSMakeRange(0, 32)];    NSData *aesIv = [sha.data subdataWithRange:NSMakeRange(32, 16)];        return [self aesDecryptWithBase64:data key:aesKey iv:aesIv];}#pragma mark AES Decrypt 128, 192, 256+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data hexKey:(NSString *)key hexIv:(NSString *)iv{    CocoaSecurityDecoder *decoder = [CocoaSecurityDecoder new];    NSData *aesKey = [decoder hex:key];    NSData *aesIv = [decoder hex:iv];        return [self aesDecryptWithBase64:data key:aesKey iv:aesIv];}+ (CocoaSecurityResult *)aesDecryptWithBase64:(NSString *)data key:(NSData *)key iv:(NSData *)iv{    CocoaSecurityDecoder *decoder = [CocoaSecurityDecoder new];    return [self aesDecryptWithData:[decoder base64:data] key:key iv:iv];}+ (CocoaSecurityResult *)aesDecryptWithData:(NSData *)data key:(NSData *)key iv:(NSData *)iv{    // check length of key and iv    if ([iv length] != 16) {        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Length of iv is wrong. Length of iv should be 16(128bits)"                                     userInfo:nil];    }    if ([key length] != 16 && [key length] != 24 && [key length] != 32 ) {        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Length of key is wrong. Length of iv should be 16, 24 or 32(128, 192 or 256bits)"                                     userInfo:nil];    }        // setup output buffer    size_t bufferSize = [data length] + kCCBlockSizeAES128;    void *buffer = malloc(bufferSize);        // do encrypt    size_t encryptedSize = 0;    CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt,                                          kCCAlgorithmAES128,                                          kCCOptionPKCS7Padding,                                          [key bytes],     // Key                                          [key length],    // kCCKeySizeAES                                          [iv bytes],       // IV                                          [data bytes],                                          [data length],                                          buffer,                                          bufferSize,                                          &encryptedSize);    if (cryptStatus == kCCSuccess) {        CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:buffer length:encryptedSize];        free(buffer);                return result;    }    else {        free(buffer);        @throw [NSException exceptionWithName:@"Cocoa Security"                                       reason:@"Decrypt Error!"                                     userInfo:nil];        return nil;    }}#pragma mark - MD5+ (CocoaSecurityResult *)md5:(NSString *)hashString{    return [self md5WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)md5WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_MD5_DIGEST_LENGTH);        CC_MD5([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_MD5_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark - HMAC-MD5+ (CocoaSecurityResult *)hmacMd5:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacMd5WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacMd5WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_MD5_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgMD5, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_MD5_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}#pragma mark - SHA1+ (CocoaSecurityResult *)sha1:(NSString *)hashString{    return [self sha1WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)sha1WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_SHA1_DIGEST_LENGTH);        CC_SHA1([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA1_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark SHA224+ (CocoaSecurityResult *)sha224:(NSString *)hashString{    return [self sha224WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)sha224WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_SHA224_DIGEST_LENGTH);        CC_SHA224([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA224_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark SHA256+ (CocoaSecurityResult *)sha256:(NSString *)hashString{    return [self sha256WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)sha256WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_SHA256_DIGEST_LENGTH);        CC_SHA256([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA256_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark SHA384+ (CocoaSecurityResult *)sha384:(NSString *)hashString{    return [self sha384WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)sha384WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_SHA384_DIGEST_LENGTH);        CC_SHA384([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA384_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark SHA512+ (CocoaSecurityResult *)sha512:(NSString *)hashString{    return [self sha512WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding]];}+ (CocoaSecurityResult *)sha512WithData:(NSData *)hashData{    unsigned char *digest;    digest = malloc(CC_SHA512_DIGEST_LENGTH);        CC_SHA512([hashData bytes], (CC_LONG)[hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA512_DIGEST_LENGTH];    free(digest);        return result;}#pragma mark - HMAC-SHA1+ (CocoaSecurityResult *)hmacSha1:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacSha1WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacSha1WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_SHA1_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgSHA1, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA1_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}#pragma mark HMAC-SHA224+ (CocoaSecurityResult *)hmacSha224:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacSha224WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacSha224WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_SHA224_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgSHA224, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA224_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}#pragma mark HMAC-SHA256+ (CocoaSecurityResult *)hmacSha256:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacSha256WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacSha256WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_SHA256_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA256_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}#pragma mark HMAC-SHA384+ (CocoaSecurityResult *)hmacSha384:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacSha384WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacSha384WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_SHA384_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgSHA384, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA384_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}#pragma mark HMAC-SHA512+ (CocoaSecurityResult *)hmacSha512:(NSString *)hashString hmacKey:(NSString *)key{    return [self hmacSha512WithData:[hashString dataUsingEncoding:NSUTF8StringEncoding] hmacKey:key];}+ (CocoaSecurityResult *)hmacSha512WithData:(NSData *)hashData hmacKey:(NSString *)key{    unsigned char *digest;    digest = malloc(CC_SHA512_DIGEST_LENGTH);    const char *cKey = [key cStringUsingEncoding:NSUTF8StringEncoding];        CCHmac(kCCHmacAlgSHA512, cKey, strlen(cKey), [hashData bytes], [hashData length], digest);    CocoaSecurityResult *result = [[CocoaSecurityResult alloc] initWithBytes:digest length:CC_SHA512_DIGEST_LENGTH];    free(digest);    cKey = nil;        return result;}@end#pragma mark - CocoaSecurityResult@implementation CocoaSecurityResult@synthesize data = _data;#pragma mark - Init- (id)initWithBytes:(unsigned char[])initData length:(NSUInteger)length{    self = [super init];    if (self) {        _data = [NSData dataWithBytes:initData length:length];    }    return self;}#pragma mark UTF8 String// convert CocoaSecurityResult to UTF8 string- (NSString *)utf8String{    NSString *result = [[NSString alloc] initWithData:_data encoding:NSUTF8StringEncoding];    return result;}#pragma mark HEX// convert CocoaSecurityResult to HEX string- (NSString *)hex{    CocoaSecurityEncoder *encoder = [CocoaSecurityEncoder new];    return [encoder hex:_data useLower:false];}- (NSString *)hexLower{    CocoaSecurityEncoder *encoder = [CocoaSecurityEncoder new];    return [encoder hex:_data useLower:true];}#pragma mark Base64// convert CocoaSecurityResult to Base64 string- (NSString *)base64{    CocoaSecurityEncoder *encoder = [CocoaSecurityEncoder new];    return [encoder base64:_data];}@end#pragma mark - CocoaSecurityEncoder@implementation CocoaSecurityEncoder// convert NSData to Base64- (NSString *)base64:(NSData *)data{    return [data base64EncodedString];}// convert NSData to hex string- (NSString *)hex:(NSData *)data useLower:(BOOL)isOutputLower{    if (data.length == 0) { return nil; }        static const char HexEncodeCharsLower[] = "0123456789abcdef";    static const char HexEncodeChars[] = "0123456789ABCDEF";    char *resultData;    // malloc result data    resultData = malloc([data length] * 2 +1);    // convert imgData(NSData) to char[]    unsigned char *sourceData = ((unsigned char *)[data bytes]);    NSUInteger length = [data length];        if (isOutputLower) {        for (NSUInteger index = 0; index < length; index++) {            // set result data            resultData[index * 2] = HexEncodeCharsLower[(sourceData[index] >> 4)];            resultData[index * 2 + 1] = HexEncodeCharsLower[(sourceData[index] % 0x10)];        }    }    else {        for (NSUInteger index = 0; index < length; index++) {            // set result data            resultData[index * 2] = HexEncodeChars[(sourceData[index] >> 4)];            resultData[index * 2 + 1] = HexEncodeChars[(sourceData[index] % 0x10)];        }    }    resultData[[data length] * 2] = 0;        // convert result(char[]) to NSString    NSString *result = [NSString stringWithCString:resultData encoding:NSASCIIStringEncoding];    sourceData = nil;    free(resultData);        return result;}@end#pragma mark - CocoaSecurityDecoder@implementation CocoaSecurityDecoder- (NSData *)base64:(NSString *)string{    return [NSData dataWithBase64EncodedString:string];}- (NSData *)hex:(NSString *)data{    if (data.length == 0) { return nil; }        static const unsigned char HexDecodeChars[] =    {        0, 0, 0, 0, 0, 0, 0, 0, 0, 0,        0, 0, 0, 0, 0, 0, 0, 0, 0, 0,        0, 0, 0, 0, 0, 0, 0, 0, 0, 0,        0, 0, 0, 0, 0, 0, 0, 0, 0, 0,        0, 0, 0, 0, 0, 0, 0, 0, 0, 1, //49        2, 3, 4, 5, 6, 7, 8, 9, 0, 0, //59        0, 0, 0, 0, 0, 10, 11, 12, 13, 14,        15, 0, 0, 0, 0, 0, 0, 0, 0, 0,  //79        0, 0, 0, 0, 0, 0, 0, 0, 0, 0,        0, 0, 0, 0, 0, 0, 0, 10, 11, 12,   //99        13, 14, 15    };        // convert data(NSString) to CString    const char *source = [data cStringUsingEncoding:NSUTF8StringEncoding];    // malloc buffer    unsigned char *buffer;    NSUInteger length = strlen(source) / 2;    buffer = malloc(length);    for (NSUInteger index = 0; index < length; index++) {        buffer[index] = (HexDecodeChars[source[index * 2]] << 4) + (HexDecodeChars[source[index * 2 + 1]]);    }    // init result NSData    NSData *result = [NSData dataWithBytes:buffer length:length];    free(buffer);    source = nil;        return  result;}@end

C#实现

///         /// DES数据解密        /// 就是出错了，也不能让程序崩溃        /// 
        ///         ///         /// 
             public static string Decrypt(string targetValue, string key = "hairihan")        {            if (string.IsNullOrEmpty(targetValue))            {                return string.Empty;            }            // 定义DES加密对象            try            {                var des = new DESCryptoServiceProvider();                int len = targetValue.Length / 2;                var inputByteArray = new byte[len];                int x, i;                for (x = 0; x < len; x++)                {                    i = Convert.ToInt32(targetValue.Substring(x * 2, 2), 16);                    inputByteArray[x] = (byte)i;                }                // 通过两次哈希密码设置对称算法的初始化向量                   des.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile                                                      (FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5").                                                           Substring(0, 8), "sha1").Substring(0, 8));                // 通过两次哈希密码设置算法的机密密钥                   des.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile                                                     (FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5")                                                          .Substring(0, 8), "md5").Substring(0, 8));                // 定义内存流                var ms = new MemoryStream();                // 定义加密流                var cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);                cs.Write(inputByteArray, 0, inputByteArray.Length);                cs.FlushFinalBlock();                return Encoding.Default.GetString(ms.ToArray());            }            catch            {            }            return string.Empty;        }        ///         /// DES数据加密        /// 
        /// 目标值        /// 密钥        /// 
     
      加密值
             public static string Encrypt(string targetValue, string key = "hairihan")        {            if (string.IsNullOrEmpty(targetValue))            {                return string.Empty;            }            var result = new StringBuilder();            var des = new DESCryptoServiceProvider();            byte[] inputByteArray = Encoding.Default.GetBytes(targetValue);            // 通过两次哈希密码设置对称算法的初始化向量               des.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile                                                  (FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5").                                                       Substring(0, 8), "sha1").Substring(0, 8));            // 通过两次哈希密码设置算法的机密密钥               des.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile                                                 (FormsAuthentication.HashPasswordForStoringInConfigFile(key, "md5")                                                      .Substring(0, 8), "md5").Substring(0, 8));            var ms = new MemoryStream();            var cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);            cs.Write(inputByteArray, 0, inputByteArray.Length);            cs.FlushFinalBlock();            foreach (byte b in ms.ToArray())            {                result.AppendFormat("{0:X2}", b);            }            return result.ToString();        }