PHP加密解密：

class JoDES {

 

    private static $_instance = NULL;

    /**

     * @return JoDES

     */

    public static function share() {

        if (is_null(self::$_instance)) {

            self::$_instance = new JoDES();

        }

        return self::$_instance;

    }

 

    /**

     * 加密

     * @param string $str 要處理的字串

     * @param string $key 加密Key，為8個位元組長度

     * @return string

     */

    public function encode($str, $key) {

        $size = mcrypt_get_block_size(MCRYPT_DES, MCRYPT_MODE_CBC);

        $str = $this->pkcs5Pad($str, $size);

        $aaa = mcrypt_cbc(MCRYPT_DES, $key, $str, MCRYPT_ENCRYPT, $key);

        $ret = base64_encode($aaa);

        return $ret;

    }

 

    /**

     * 解密 

     * @param string $str 要處理的字串

     * @param string $key 解密Key，為8個位元組長度

     * @return string

     */

    public function decode($str, $key) {

        $strBin = base64_decode($str);

        $str = mcrypt_cbc(MCRYPT_DES, $key, $strBin, MCRYPT_DECRYPT, $key);

        $str = $this->pkcs5Unpad($str);

        return $str;

    }

 

    function hex2bin($hexData) {

        $binData = "";

        for ($i = 0; $i < strlen($hexData); $i += 2) {

            $binData .= chr(hexdec(substr($hexData, $i, 2)));

        }

        return $binData;

    }

 

    function pkcs5Pad($text, $blocksize) {

        $pad = $blocksize - (strlen($text) % $blocksize);

        return $text . str_repeat(chr($pad), $pad);

    }

 

    function pkcs5Unpad($text) {

        $pad = ord($text {strlen($text) - 1});

        if ($pad > strlen($text))

            return false;

 

        if (strspn($text, chr($pad), strlen($text) - $pad) != $pad)

            return false;

 

        return substr($text, 0, - 1 * $pad);

    }

 

}
 

C#加密解密：

public class MyDes

    {

        /// <summary>

        /// DES加密方法

        /// </summary>

        /// <param name="strPlain">明文</param>

        /// <param name="strDESKey">金鑰</param>

        /// <param name="strDESIV">向量</param>

        /// <returns>密文</returns>

        public static string Encode(string source, string _DESKey)

        {

            StringBuilder sb = new StringBuilder();

            using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())

            {

                byte[] key = ASCIIEncoding.ASCII.GetBytes(_DESKey);

                byte[] iv = ASCIIEncoding.ASCII.GetBytes(_DESKey);

                byte[] dataByteArray = Encoding.UTF8.GetBytes(source);

                des.Mode = System.Security.Cryptography.CipherMode.CBC;

                des.Key = key;

                des.IV = iv;

                string encrypt = "";

                using (MemoryStream ms = new MemoryStream())

                using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))

                {

                    cs.Write(dataByteArray, 0, dataByteArray.Length);

                    cs.FlushFinalBlock();

                    encrypt = Convert.ToBase64String(ms.ToArray());

                }

                return encrypt;

            }

        }

 

        /// <summary>

        /// 進行DES解密。

        /// </summary>

        /// <param name="pToDecrypt">要解密的base64串</param>

        /// <param name="sKey">金鑰，且必須為8位。</param>

        /// <returns>已解密的字串。</returns>

        public static string Decode(string source, string sKey)

        {

            byte[] inputByteArray = System.Convert.FromBase64String(source);
 

            //Encoding.UTF8.GetBytes(source);

            using (DESCryptoServiceProvider des = new DESCryptoServiceProvider())

            {

                des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);

                des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);

                System.IO.MemoryStream ms = new System.IO.MemoryStream();

                using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write))

                {

                    cs.Write(inputByteArray, 0, inputByteArray.Length);

                    cs.FlushFinalBlock();

                    cs.Close();

                }

                string str = Encoding.UTF8.GetString(ms.ToArray());

                ms.Close();

                return str;

            }

        }

    }
 

JAVA & Android：

package com.example.aric.test;

 

import javax.crypto.Cipher;

import javax.crypto.SecretKey;

import javax.crypto.SecretKeyFactory;

import javax.crypto.spec.DESKeySpec;

import javax.crypto.spec.IvParameterSpec;

 

import android.util.Base64;

 

public class DES {

 

    public final static String DES_KEY_STRING = "ABSujsuu";

     

    public static String encrypt(String message, String key) throws Exception {

        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

 

        DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

 

        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

        SecretKey secretKey = keyFactory.generateSecret(desKeySpec);

        IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));

        cipher.init(Cipher.ENCRYPT_MODE, secretKey, iv);

 

        return encodeBase64(cipher.doFinal(message.getBytes("UTF-8")));

    }

 

    public static String decrypt(String message, String key) throws Exception {

 

        byte[] bytesrc = decodeBase64(message);//convertHexString(message);

        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

        DESKeySpec desKeySpec = new DESKeySpec(key.getBytes("UTF-8"));

        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");

        SecretKey secretKey = keyFactory.generateSecret(desKeySpec);

        IvParameterSpec iv = new IvParameterSpec(key.getBytes("UTF-8"));

 

        cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);

 

        byte[] retByte = cipher.doFinal(bytesrc);

        return new String(retByte);

    }

 

    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 encodeBase64(byte[] b) {

        return Base64.encodeToString(b, Base64.DEFAULT);

    }

     

    public static byte[] decodeBase64(String base64String) {

        return Base64.decode(base64String, Base64.DEFAULT);

    }

}

java所需Base64類：

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.myfund.cxf.utils;

import java.io.UnsupportedEncodingException;

/**
 * Utilities for encoding and decoding the Base64 representation of
 * binary data.  See RFCs <a
 * href="http://www.ietf.org/rfc/rfc2045.txt">2045</a> and <a
 * href="http://www.ietf.org/rfc/rfc3548.txt">3548</a>.
 */
public class Base64 {
    /**
     * Default values for encoder/decoder flags.
     */
    public static final int DEFAULT = 0;

    /**
     * Encoder flag bit to omit the padding '=' characters at the end
     * of the output (if any).
     */
    public static final int NO_PADDING = 1;

    /**
     * Encoder flag bit to omit all line terminators (i.e., the output
     * will be on one long line).
     */
    public static final int NO_WRAP = 2;

    /**
     * Encoder flag bit to indicate lines should be terminated with a
     * CRLF pair instead of just an LF.  Has no effect if {@code
     * NO_WRAP} is specified as well.
     */
    public static final int CRLF = 4;

    /**
     * Encoder/decoder flag bit to indicate using the "URL and
     * filename safe" variant of Base64 (see RFC 3548 section 4) where
     * {@code -} and {@code _} are used in place of {@code +} and
     * {@code /}.
     */
    public static final int URL_SAFE = 8;

    /**
     * Flag to pass to {@link Base64OutputStream} to indicate that it
     * should not close the output stream it is wrapping when it
     * itself is closed.
     */
    public static final int NO_CLOSE = 16;

    //  --------------------------------------------------------
    //  shared code
    //  --------------------------------------------------------

    /* package */ static abstract class Coder {
        public byte[] output;
        public int op;

        /**
         * Encode/decode another block of input data.  this.output is
         * provided by the caller, and must be big enough to hold all
         * the coded data.  On exit, this.opwill be set to the length
         * of the coded data.
         *
         * @param finish true if this is the final call to process for
         *        this object.  Will finalize the coder state and
         *        include any final bytes in the output.
         *
         * @return true if the input so far is good; false if some
         *         error has been detected in the input stream..
         */
        public abstract boolean process(byte[] input, int offset, int len, boolean finish);

        /**
         * @return the maximum number of bytes a call to process()
         * could produce for the given number of input bytes.  This may
         * be an overestimate.
         */
        public abstract int maxOutputSize(int len);
    }

    //  --------------------------------------------------------
    //  decoding
    //  --------------------------------------------------------

    /**
     * Decode the Base64-encoded data in input and return the data in
     * a new byte array.
     *
     * <p>The padding '=' characters at the end are considered optional, but
     * if any are present, there must be the correct number of them.
     *
     * @param str    the input String to decode, which is converted to
     *               bytes using the default charset
     * @param flags  controls certain features of the decoded output.
     *               Pass {@code DEFAULT} to decode standard Base64.
     *
     * @throws IllegalArgumentException if the input contains
     * incorrect padding
     */
    public static byte[] decode(String str, int flags) {
        return decode(str.getBytes(), flags);
    }

    /**
     * Decode the Base64-encoded data in input and return the data in
     * a new byte array.
     *
     * <p>The padding '=' characters at the end are considered optional, but
     * if any are present, there must be the correct number of them.
     *
     * @param input the input array to decode
     * @param flags  controls certain features of the decoded output.
     *               Pass {@code DEFAULT} to decode standard Base64.
     *
     * @throws IllegalArgumentException if the input contains
     * incorrect padding
     */
    public static byte[] decode(byte[] input, int flags) {
        return decode(input, 0, input.length, flags);
    }

    /**
     * Decode the Base64-encoded data in input and return the data in
     * a new byte array.
     *
     * <p>The padding '=' characters at the end are considered optional, but
     * if any are present, there must be the correct number of them.
     *
     * @param input  the data to decode
     * @param offset the position within the input array at which to start
     * @param len    the number of bytes of input to decode
     * @param flags  controls certain features of the decoded output.
     *               Pass {@code DEFAULT} to decode standard Base64.
     *
     * @throws IllegalArgumentException if the input contains
     * incorrect padding
     */
    public static byte[] decode(byte[] input, int offset, int len, int flags) {
        // Allocate space for the most data the input could represent.
        // (It could contain less if it contains whitespace, etc.)
        Decoder decoder = new Decoder(flags, new byte[len*3/4]);

        if (!decoder.process(input, offset, len, true)) {
            throw new IllegalArgumentException("bad base-64");
        }

        // Maybe we got lucky and allocated exactly enough output space.
        if (decoder.op == decoder.output.length) {
            return decoder.output;
        }

        // Need to shorten the array, so allocate a new one of the
        // right size and copy.
        byte[] temp = new byte[decoder.op];
        System.arraycopy(decoder.output, 0, temp, 0, decoder.op);
        return temp;
    }

    /* package */ static class Decoder extends Coder {
        /**
         * Lookup table for turning bytes into their position in the
         * Base64 alphabet.
         */
        private static final int DECODE[] = {
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1,
            -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
            -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
            41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        };

        /**
         * Decode lookup table for the "web safe" variant (RFC 3548
         * sec. 4) where - and _ replace + and /.
         */
        private static final int DECODE_WEBSAFE[] = {
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1,
            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -2, -1, -1,
            -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63,
            -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
            41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        };

        /** Non-data values in the DECODE arrays. */
        private static final int SKIP = -1;
        private static final int EQUALS = -2;

        /**
         * States 0-3 are reading through the next input tuple.
         * State 4 is having read one '=' and expecting exactly
         * one more.
         * State 5 is expecting no more data or padding characters
         * in the input.
         * State 6 is the error state; an error has been detected
         * in the input and no future input can "fix" it.
         */
        private int state;   // state number (0 to 6)
        private int value;

        final private int[] alphabet;

        public Decoder(int flags, byte[] output) {
            this.output = output;

            alphabet = ((flags & URL_SAFE) == 0) ? DECODE : DECODE_WEBSAFE;
            state = 0;
            value = 0;
        }

        /**
         * @return an overestimate for the number of bytes {@code
         * len} bytes could decode to.
         */
        public int maxOutputSize(int len) {
            return len * 3/4 + 10;
        }

        /**
         * Decode another block of input data.
         *
         * @return true if the state machine is still healthy.  false if
         *         bad base-64 data has been detected in the input stream.
         */
        public boolean process(byte[] input, int offset, int len, boolean finish) {
            if (this.state == 6) return false;

            int p = offset;
            len += offset;

            // Using local variables makes the decoder about 12%
            // faster than if we manipulate the member variables in
            // the loop.  (Even alphabet makes a measurable
            // difference, which is somewhat surprising to me since
            // the member variable is final.)
            int state = this.state;
            int value = this.value;
            int op = 0;
            final byte[] output = this.output;
            final int[] alphabet = this.alphabet;

            while (p < len) {
                // Try the fast path:  we're starting a new tuple and the
                // next four bytes of the input stream are all data
                // bytes.  This corresponds to going through states
                // 0-1-2-3-0.  We expect to use this method for most of
                // the data.
                //
                // If any of the next four bytes of input are non-data
                // (whitespace, etc.), value will end up negative.  (All
                // the non-data values in decode are small negative
                // numbers, so shifting any of them up and or'ing them
                // together will result in a value with its top bit set.)
                //
                // You can remove this whole block and the output should
                // be the same, just slower.
                if (state == 0) {
                    while (p+4 <= len &&
                           (value = ((alphabet[input[p] & 0xff] << 18) |
                                     (alphabet[input[p+1] & 0xff] << 12) |
                                     (alphabet[input[p+2] & 0xff] << 6) |
                                     (alphabet[input[p+3] & 0xff]))) >= 0) {
                        output[op+2] = (byte) value;
                        output[op+1] = (byte) (value >> 8);
                        output[op] = (byte) (value >> 16);
                        op += 3;
                        p += 4;
                    }
                    if (p >= len) break;
                }

                // The fast path isn't available -- either we've read a
                // partial tuple, or the next four input bytes aren't all
                // data, or whatever.  Fall back to the slower state
                // machine implementation.

                int d = alphabet[input[p++] & 0xff];

                switch (state) {
                case 0:
                    if (d >= 0) {
                        value = d;
                        ++state;
                    } else if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;

                case 1:
                    if (d >= 0) {
                        value = (value << 6) | d;
                        ++state;
                    } else if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;

                case 2:
                    if (d >= 0) {
                        value = (value << 6) | d;
                        ++state;
                    } else if (d == EQUALS) {
                        // Emit the last (partial) output tuple;
                        // expect exactly one more padding character.
                        output[op++] = (byte) (value >> 4);
                        state = 4;
                    } else if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;

                case 3:
                    if (d >= 0) {
                        // Emit the output triple and return to state 0.
                        value = (value << 6) | d;
                        output[op+2] = (byte) value;
                        output[op+1] = (byte) (value >> 8);
                        output[op] = (byte) (value >> 16);
                        op += 3;
                        state = 0;
                    } else if (d == EQUALS) {
                        // Emit the last (partial) output tuple;
                        // expect no further data or padding characters.
                        output[op+1] = (byte) (value >> 2);
                        output[op] = (byte) (value >> 10);
                        op += 2;
                        state = 5;
                    } else if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;

                case 4:
                    if (d == EQUALS) {
                        ++state;
                    } else if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;

                case 5:
                    if (d != SKIP) {
                        this.state = 6;
                        return false;
                    }
                    break;
                }
            }

            if (!finish) {
                // We're out of input, but a future call could provide
                // more.
                this.state = state;
                this.value = value;
                this.op = op;
                return true;
            }

            // Done reading input.  Now figure out where we are left in
            // the state machine and finish up.

            switch (state) {
            case 0:
                // Output length is a multiple of three.  Fine.
                break;
            case 1:
                // Read one extra input byte, which isn't enough to
                // make another output byte.  Illegal.
                this.state = 6;
                return false;
            case 2:
                // Read two extra input bytes, enough to emit 1 more
                // output byte.  Fine.
                output[op++] = (byte) (value >> 4);
                break;
            case 3:
                // Read three extra input bytes, enough to emit 2 more
                // output bytes.  Fine.
                output[op++] = (byte) (value >> 10);
                output[op++] = (byte) (value >> 2);
                break;
            case 4:
                // Read one padding '=' when we expected 2.  Illegal.
                this.state = 6;
                return false;
            case 5:
                // Read all the padding '='s we expected and no more.
                // Fine.
                break;
            }

            this.state = state;
            this.op = op;
            return true;
        }
    }

    //  --------------------------------------------------------
    //  encoding
    //  --------------------------------------------------------

    /**
     * Base64-encode the given data and return a newly allocated
     * String with the result.
     *
     * @param input  the data to encode
     * @param flags  controls certain features of the encoded output.
     *               Passing {@code DEFAULT} results in output that
     *               adheres to RFC 2045.
     */
    public static String encodeToString(byte[] input, int flags) {
        try {
            return new String(encode(input, flags), "US-ASCII");
        } catch (UnsupportedEncodingException e) {
            // US-ASCII is guaranteed to be available.
            throw new AssertionError(e);
        }
    }

    /**
     * Base64-encode the given data and return a newly allocated
     * String with the result.
     *
     * @param input  the data to encode
     * @param offset the position within the input array at which to
     *               start
     * @param len    the number of bytes of input to encode
     * @param flags  controls certain features of the encoded output.
     *               Passing {@code DEFAULT} results in output that
     *               adheres to RFC 2045.
     */
    public static String encodeToString(byte[] input, int offset, int len, int flags) {
        try {
            return new String(encode(input, offset, len, flags), "US-ASCII");
        } catch (UnsupportedEncodingException e) {
            // US-ASCII is guaranteed to be available.
            throw new AssertionError(e);
        }
    }

    /**
     * Base64-encode the given data and return a newly allocated
     * byte[] with the result.
     *
     * @param input  the data to encode
     * @param flags  controls certain features of the encoded output.
     *               Passing {@code DEFAULT} results in output that
     *               adheres to RFC 2045.
     */
    public static byte[] encode(byte[] input, int flags) {
        return encode(input, 0, input.length, flags);
    }

    /**
     * Base64-encode the given data and return a newly allocated
     * byte[] with the result.
     *
     * @param input  the data to encode
     * @param offset the position within the input array at which to
     *               start
     * @param len    the number of bytes of input to encode
     * @param flags  controls certain features of the encoded output.
     *               Passing {@code DEFAULT} results in output that
     *               adheres to RFC 2045.
     */
    public static byte[] encode(byte[] input, int offset, int len, int flags) {
        Encoder encoder = new Encoder(flags, null);

        // Compute the exact length of the array we will produce.
        int output_len = len / 3 * 4;

        // Account for the tail of the data and the padding bytes, if any.
        if (encoder.do_padding) {
            if (len % 3 > 0) {
                output_len += 4;
            }
        } else {
            switch (len % 3) {
                case 0: break;
                case 1: output_len += 2; break;
                case 2: output_len += 3; break;
            }
        }

        // Account for the newlines, if any.
        if (encoder.do_newline && len > 0) {
            output_len += (((len-1) / (3 * Encoder.LINE_GROUPS)) + 1) *
                (encoder.do_cr ? 2 : 1);
        }

        encoder.output = new byte[output_len];
        encoder.process(input, offset, len, true);

        assert encoder.op == output_len;

        return encoder.output;
    }

    /* package */ static class Encoder extends Coder {
        /**
         * Emit a new line every this many output tuples.  Corresponds to
         * a 76-character line length (the maximum allowable according to
         * <a href="http://www.ietf.org/rfc/rfc2045.txt">RFC 2045</a>).
         */
        public static final int LINE_GROUPS = 19;

        /**
         * Lookup table for turning Base64 alphabet positions (6 bits)
         * into output bytes.
         */
        private static final byte ENCODE[] = {
            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
            'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
            'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
            'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/',
        };

        /**
         * Lookup table for turning Base64 alphabet positions (6 bits)
         * into output bytes.
         */
        private static final byte ENCODE_WEBSAFE[] = {
            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
            'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
            'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
            'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '_',
        };

        final private byte[] tail;
        /* package */ int tailLen;
        private int count;

        final public boolean do_padding;
        final public boolean do_newline;
        final public boolean do_cr;
        final private byte[] alphabet;

        public Encoder(int flags, byte[] output) {
            this.output = output;

            do_padding = (flags & NO_PADDING) == 0;
            do_newline = (flags & NO_WRAP) == 0;
            do_cr = (flags & CRLF) != 0;
            alphabet = ((flags & URL_SAFE) == 0) ? ENCODE : ENCODE_WEBSAFE;

            tail = new byte[2];
            tailLen = 0;

            count = do_newline ? LINE_GROUPS : -1;
        }

        /**
         * @return an overestimate for the number of bytes {@code
         * len} bytes could encode to.
         */
        public int maxOutputSize(int len) {
            return len * 8/5 + 10;
        }

        public boolean process(byte[] input, int offset, int len, boolean finish) {
            // Using local variables makes the encoder about 9% faster.
            final byte[] alphabet = this.alphabet;
            final byte[] output = this.output;
            int op = 0;
            int count = this.count;

            int p = offset;
            len += offset;
            int v = -1;

            // First we need to concatenate the tail of the previous call
            // with any input bytes available now and see if we can empty
            // the tail.

            switch (tailLen) {
                case 0:
                    // There was no tail.
                    break;

                case 1:
                    if (p+2 <= len) {
                        // A 1-byte tail with at least 2 bytes of
                        // input available now.
                        v = ((tail[0] & 0xff) << 16) |
                            ((input[p++] & 0xff) << 8) |
                            (input[p++] & 0xff);
                        tailLen = 0;
                    };
                    break;

                case 2:
                    if (p+1 <= len) {
                        // A 2-byte tail with at least 1 byte of input.
                        v = ((tail[0] & 0xff) << 16) |
                            ((tail[1] & 0xff) << 8) |
                            (input[p++] & 0xff);
                        tailLen = 0;
                    }
                    break;
            }

            if (v != -1) {
                output[op++] = alphabet[(v >> 18) & 0x3f];
                output[op++] = alphabet[(v >> 12) & 0x3f];
                output[op++] = alphabet[(v >> 6) & 0x3f];
                output[op++] = alphabet[v & 0x3f];
                if (--count == 0) {
                    if (do_cr) output[op++] = '\r';
                    output[op++] = '\n';
                    count = LINE_GROUPS;
                }
            }

            // At this point either there is no tail, or there are fewer
            // than 3 bytes of input available.

            // The main loop, turning 3 input bytes into 4 output bytes on
            // each iteration.
            while (p+3 <= len) {
                v = ((input[p] & 0xff) << 16) |
                    ((input[p+1] & 0xff) << 8) |
                    (input[p+2] & 0xff);
                output[op] = alphabet[(v >> 18) & 0x3f];
                output[op+1] = alphabet[(v >> 12) & 0x3f];
                output[op+2] = alphabet[(v >> 6) & 0x3f];
                output[op+3] = alphabet[v & 0x3f];
                p += 3;
                op += 4;
                if (--count == 0) {
                    if (do_cr) output[op++] = '\r';
                    output[op++] = '\n';
                    count = LINE_GROUPS;
                }
            }

            if (finish) {
                // Finish up the tail of the input.  Note that we need to
                // consume any bytes in tail before any bytes
                // remaining in input; there should be at most two bytes
                // total.

                if (p-tailLen == len-1) {
                    int t = 0;
                    v = ((tailLen > 0 ? tail[t++] : input[p++]) & 0xff) << 4;
                    tailLen -= t;
                    output[op++] = alphabet[(v >> 6) & 0x3f];
                    output[op++] = alphabet[v & 0x3f];
                    if (do_padding) {
                        output[op++] = '=';
                        output[op++] = '=';
                    }
                    if (do_newline) {
                        if (do_cr) output[op++] = '\r';
                        output[op++] = '\n';
                    }
                } else if (p-tailLen == len-2) {
                    int t = 0;
                    v = (((tailLen > 1 ? tail[t++] : input[p++]) & 0xff) << 10) |
                        (((tailLen > 0 ? tail[t++] : input[p++]) & 0xff) << 2);
                    tailLen -= t;
                    output[op++] = alphabet[(v >> 12) & 0x3f];
                    output[op++] = alphabet[(v >> 6) & 0x3f];
                    output[op++] = alphabet[v & 0x3f];
                    if (do_padding) {
                        output[op++] = '=';
                    }
                    if (do_newline) {
                        if (do_cr) output[op++] = '\r';
                        output[op++] = '\n';
                    }
                } else if (do_newline && op > 0 && count != LINE_GROUPS) {
                    if (do_cr) output[op++] = '\r';
                    output[op++] = '\n';
                }

                assert tailLen == 0;
                assert p == len;
            } else {
                // Save the leftovers in tail to be consumed on the next
                // call to encodeInternal.

                if (p == len-1) {
                    tail[tailLen++] = input[p];
                } else if (p == len-2) {
                    tail[tailLen++] = input[p];
                    tail[tailLen++] = input[p+1];
                }
            }

            this.op = op;
            this.count = count;

            return true;
        }
    }

    private Base64() { }   // don't instantiate
}

Object-C：

/***  JoDes.h ***/

 

#import <Foundation/Foundation.h>

#import <CommonCrypto/CommonDigest.h>

#import <CommonCrypto/CommonCryptor.h>

 

@interface JoDes : NSObject

 

+ (NSString *) encode:(NSString *)str key:(NSString *)key;

+ (NSString *) decode:(NSString *)str key:(NSString *)key;

 

@end

 

 

/***  JoDes.m ***/

//

//  XLEncrytHelper.m

//  NewHoldGold

//

//  Created by 樑鑫磊 on 13-12-27.

//  Copyright (c) 2013年 zsgjs. All rights reserved.

//

 

#import "JoDes.h"

 

@interface JoDes()

 

+ (NSString *) encodeBase64WithString:(NSString *)strData;

+ (NSString *) encodeBase64WithData:(NSData *)objData;

+ (NSData *) decodeBase64WithString:(NSString *)strBase64;

 

+ (NSString *)doCipher:(NSString *)sTextIn key:(NSString *)sKey

                  context:(CCOperation)encryptOrDecrypt;

 

@end

 

@implementation JoDes

 

+ (NSString *) encode:(NSString *)str key:(NSString *)key

{

    // doCipher 不能編漢字，所以要進行 url encode

    NSMutableString* str1 = [JoDes urlEncode:str];

    NSMutableString* encode = [NSMutableString stringWithString:[JoDes doCipher:str1 key:key context:kCCEncrypt]];

    [JoDes formatSpecialCharacters:encode];

    return encode;

}

 

+ (NSString *) decode:(NSString *)str key:(NSString *)key

{

    NSMutableString *str1 = [NSMutableString stringWithString:str];

    [JoDes reformatSpecialCharacters:str1];

    NSString *rt = [JoDes doCipher:str1 key:key context:kCCDecrypt];

    return rt;

}

 

+ (NSMutableString *)urlEncode:(NSString*)str

{

    NSMutableString* encodeStr = [NSMutableString stringWithString:[str stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    [encodeStr replaceOccurrencesOfString:@"+" withString:@"%2B" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [encodeStr length])];

    [encodeStr replaceOccurrencesOfString:@"/" withString:@"%2F" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [encodeStr length])];

    return encodeStr;

}

 

+ (void)formatSpecialCharacters:(NSMutableString *)str

{

    [str replaceOccurrencesOfString:@"+" withString:@"$$" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [str length])];

    [str replaceOccurrencesOfString:@"/" withString:@"@@" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [str length])];

}

 

 

+ (void)reformatSpecialCharacters:(NSMutableString *)str

{

    [str replaceOccurrencesOfString:@"$$" withString:@"+" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [str length])];

    [str replaceOccurrencesOfString:@"@@" withString:@"/" options:NSWidthInsensitiveSearch range:NSMakeRange(0, [str length])];

}

 

+ (NSString *)encodeBase64WithString:(NSString *)strData {

    return [JoDes encodeBase64WithData:[strData dataUsingEncoding:NSUTF8StringEncoding]];

}

 

 

+ (NSString *)encodeBase64WithData:(NSData *)objData {

    NSString *encoding = nil;

    unsigned char *encodingBytes = NULL;

    @try {

        static char encodingTable[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

        static NSUInteger paddingTable[] = {0,2,1};

         

        NSUInteger dataLength = [objData length];

        NSUInteger encodedBlocks = (dataLength * 8) / 24;

        NSUInteger padding = paddingTable[dataLength % 3];

        if( padding > 0 ) encodedBlocks++;

        NSUInteger encodedLength = encodedBlocks * 4;

         

        encodingBytes = malloc(encodedLength);

        if( encodingBytes != NULL ) {

            NSUInteger rawBytesToProcess = dataLength;

            NSUInteger rawBaseIndex = 0;

            NSUInteger encodingBaseIndex = 0;

            unsigned char *rawBytes = (unsigned char *)[objData bytes];

            unsigned char rawByte1, rawByte2, rawByte3;

            while( rawBytesToProcess >= 3 ) {

                rawByte1 = rawBytes[rawBaseIndex];

                rawByte2 = rawBytes[rawBaseIndex+1];

                rawByte3 = rawBytes[rawBaseIndex+2];

                encodingBytes[encodingBaseIndex] = encodingTable[((rawByte1 >> 2) & 0x3F)];

                encodingBytes[encodingBaseIndex+1] = encodingTable[((rawByte1 << 4) & 0x30) | ((rawByte2 >> 4) & 0x0F) ];

                encodingBytes[encodingBaseIndex+2] = encodingTable[((rawByte2 << 2) & 0x3C) | ((rawByte3 >> 6) & 0x03) ];

                encodingBytes[encodingBaseIndex+3] = encodingTable[(rawByte3 & 0x3F)];

                 

                rawBaseIndex += 3;

                encodingBaseIndex += 4;

                rawBytesToProcess -= 3;

            }

            rawByte2 = 0;

            switch (dataLength-rawBaseIndex) {

                case 2:

                    rawByte2 = rawBytes[rawBaseIndex+1];

                case 1:

                    rawByte1 = rawBytes[rawBaseIndex];

                    encodingBytes[encodingBaseIndex] = encodingTable[((rawByte1 >> 2) & 0x3F)];

                    encodingBytes[encodingBaseIndex+1] = encodingTable[((rawByte1 << 4) & 0x30) | ((rawByte2 >> 4) & 0x0F) ];

                    encodingBytes[encodingBaseIndex+2] = encodingTable[((rawByte2 << 2) & 0x3C) ];

                    // we can skip rawByte3 since we have a partial block it would always be 0

                    break;

            }

            // compute location from where to begin inserting padding, it may overwrite some bytes from the partial block encoding

            // if their value was 0 (cases 1-2).

            encodingBaseIndex = encodedLength - padding;

            while( padding-- > 0 ) {

                encodingBytes[encodingBaseIndex++] = '=';

            }

            encoding = [[NSString alloc] initWithBytes:encodingBytes length:encodedLength encoding:NSASCIIStringEncoding];

        }

    }

    @catch (NSException *exception) {

        encoding = nil;

        NSLog(@"WARNING: error occured while tring to encode base 32 data: %@", exception);

    }

    @finally {

        if( encodingBytes != NULL ) {

            free( encodingBytes );

        }

    }

    return encoding;

     

}

 

+ (NSData *)decodeBase64WithString:(NSString *)strBase64 {

    NSData *data = nil;

    unsigned char *decodedBytes = NULL;

    @try {

#define __ 255

        static char decodingTable[256] = {

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0x00 - 0x0F

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0x10 - 0x1F

            __,__,__,__, __,__,__,__, __,__,__,62, __,__,__,63,  // 0x20 - 0x2F

            52,53,54,55, 56,57,58,59, 60,61,__,__, __, 0,__,__,  // 0x30 - 0x3F

            __, 0, 1, 2,  3, 4, 5, 6,  7, 8, 9,10, 11,12,13,14,  // 0x40 - 0x4F

            15,16,17,18, 19,20,21,22, 23,24,25,__, __,__,__,__,  // 0x50 - 0x5F

            __,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,  // 0x60 - 0x6F

            41,42,43,44, 45,46,47,48, 49,50,51,__, __,__,__,__,  // 0x70 - 0x7F

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0x80 - 0x8F

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0x90 - 0x9F

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xA0 - 0xAF

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xB0 - 0xBF

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xC0 - 0xCF

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xD0 - 0xDF

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xE0 - 0xEF

            __,__,__,__, __,__,__,__, __,__,__,__, __,__,__,__,  // 0xF0 - 0xFF

        };

        strBase64 = [strBase64 stringByReplacingOccurrencesOfString:@"=" withString:@""];

        NSData *encodedData = [strBase64 dataUsingEncoding:NSASCIIStringEncoding];

        unsigned char *encodedBytes = (unsigned char *)[encodedData bytes];

         

        NSUInteger encodedLength = [encodedData length];

        NSUInteger encodedBlocks = (encodedLength+3) >> 2;

        NSUInteger expectedDataLength = encodedBlocks * 3;

         

        unsigned char decodingBlock[4];

         

        decodedBytes = malloc(expectedDataLength);

        if( decodedBytes != NULL ) {

             

            NSUInteger i = 0;

            NSUInteger j = 0;

            NSUInteger k = 0;

            unsigned char c;

            while( i < encodedLength ) {

                c = decodingTable[encodedBytes[i]];

                i++;

                if( c != __ ) {

                    decodingBlock[j] = c;

                    j++;

                    if( j == 4 ) {

                        decodedBytes[k] = (decodingBlock[0] << 2) | (decodingBlock[1] >> 4);

                        decodedBytes[k+1] = (decodingBlock[1] << 4) | (decodingBlock[2] >> 2);

                        decodedBytes[k+2] = (decodingBlock[2] << 6) | (decodingBlock[3]);

                        j = 0;

                        k += 3;

                    }

                }

            }

             

            // Process left over bytes, if any

            if( j == 3 ) {

                decodedBytes[k] = (decodingBlock[0] << 2) | (decodingBlock[1] >> 4);

                decodedBytes[k+1] = (decodingBlock[1] << 4) | (decodingBlock[2] >> 2);

                k += 2;

            } else if( j == 2 ) {

                decodedBytes[k] = (decodingBlock[0] << 2) | (decodingBlock[1] >> 4);

                k += 1;

            }

            data = [[NSData alloc] initWithBytes:decodedBytes length:k];

        }

    }

    @catch (NSException *exception) {

        data = nil;

        NSLog(@"WARNING: error occured while decoding base 32 string: %@", exception);

    }

    @finally {

        if( decodedBytes != NULL ) {

            free( decodedBytes );

        }

    }

    return data;

     

}

 

 

+ (NSString *)doCipher:(NSString *)sTextIn key:(NSString *)sKey

                  context:(CCOperation)encryptOrDecrypt {

    NSStringEncoding EnC = NSUTF8StringEncoding;

     

    NSMutableData *dTextIn;

    if (encryptOrDecrypt == kCCDecrypt) {

        dTextIn = [[JoDes decodeBase64WithString:sTextIn] mutableCopy];

    }

    else{

        dTextIn = [[sTextIn dataUsingEncoding: EnC] mutableCopy];

    }

    NSMutableData * dKey = [[sKey dataUsingEncoding:EnC] mutableCopy];

    [dKey setLength:kCCBlockSizeDES];

    uint8_t *bufferPtr1 = NULL;

    size_t bufferPtrSize1 = 0;

    size_t movedBytes1 = 0;

    //uint8_t iv[kCCBlockSizeDES];

    //memset((void *) iv, 0x0, (size_t) sizeof(iv));

    //    Byte iv[] = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF};

    bufferPtrSize1 = ([sTextIn length] + kCCKeySizeDES) & ~(kCCKeySizeDES -1);

    bufferPtr1 = malloc(bufferPtrSize1 * sizeof(uint8_t));

    memset((void *)bufferPtr1, 0x00, bufferPtrSize1);

     

    CCCrypt(encryptOrDecrypt, // CCOperation op

            kCCAlgorithmDES, // CCAlgorithm alg

            kCCOptionPKCS7Padding, // CCOptions options

            [dKey bytes], // const void *key

            [dKey length], // size_t keyLength //

            [dKey bytes], // const void *iv

            [dTextIn bytes], // const void *dataIn

            [dTextIn length],  // size_t dataInLength

            (void *)bufferPtr1, // void *dataOut

            bufferPtrSize1,     // size_t dataOutAvailable

            &movedBytes1);

     

    //[dTextIn release];

    //[dKey release];

     

    NSString * sResult;

    if (encryptOrDecrypt == kCCDecrypt){

        sResult = [[NSString alloc] initWithData:[NSData dataWithBytes:bufferPtr1 length:movedBytes1] encoding:EnC];

        free(bufferPtr1);

    }

    else {

        NSData *dResult = [NSData dataWithBytes:bufferPtr1 length:movedBytes1];

        free(bufferPtr1);

        sResult = [JoDes encodeBase64WithData:dResult];

    }

    return sResult;

}

 
@end