java版本自己封装base64

package com.qhong;import java.io.UnsupportedEncodingException;import org.apache.commons.lang.StringUtils;public class Base64Utils {    /**     * Base64方法重写     */    public static void main(String[] args) {        String aa = "商户私有域";        String aaa = byteArrayToBase64(aa.getBytes());        System.out.println(aaa);        try {            String bb = new String(base64ToByteArray(aaa));            System.out.println(bb);            String tests = encodeBuffer("【厚本金融】", "GBK");            System.out.println(tests);            System.out.println(decodeBuffer(tests, "GBK"));        } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }    }    /**     * 将字符数组base64字符串     * @param a 要转化的字符数组     * @return  base64字符串     */    public static String byteArrayToBase64(byte[] a) {        int aLen = a.length; //总长度        int numFullGroups = aLen / 3; //以3个byte组成以4个字符为一组的组数        int numBytesInPartialGroup = aLen - 3 * numFullGroups; //余数        int resultLen = 4 * ((aLen + 2) / 3); //输出长度总是4倍数，如果有余数，(aLen+2)/3保证将余数包含，并有空间放置填充符=        StringBuffer result = new StringBuffer(resultLen);        int inCursor = 0;        for (int i = 0; i < numFullGroups; i++) {            int byte0 = a[inCursor++] & 0xff;            int byte1 = a[inCursor++] & 0xff;            int byte2 = a[inCursor++] & 0xff;            result.append(intToBase64[byte0 >> 2]);            result.append(intToBase64[(byte0 << 4) & 0x3f | (byte1 >> 4)]);            result.append(intToBase64[(byte1 << 2) & 0x3f | (byte2 >> 6)]);            result.append(intToBase64[byte2 & 0x3f]);        }        //处理余数        if (numBytesInPartialGroup != 0) {            int byte0 = a[inCursor++] & 0xff;            result.append(intToBase64[byte0 >> 2]);            //余数为1            if (numBytesInPartialGroup == 1) {                result.append(intToBase64[(byte0 << 4) & 0x3f]);                result.append("==");            } else {                // 余数为2                int byte1 = a[inCursor++] & 0xff;                result.append(intToBase64[(byte0 << 4) & 0x3f | (byte1 >> 4)]);                result.append(intToBase64[(byte1 << 2) & 0x3f]);                result.append('=');            }        }        return result.toString();    }    static final char intToBase64[] = { 'A', 'B', 'C', 'D', 'E', 'F', /* 索引 0 ~ 5*/            'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',  /* 索引6 ~ 18*/            'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',  /* 索引 19 ~ 31*/            'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',  /* 索引 32 ~ 44*/            't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5',  /* 索引 45 ~ 57*/            '6', '7', '8', '9', '.'/*原先是字符+*/, '_'/*原先是字符/ */ };  /* 索引58 ~ 63*/    /**     * base64字符串还原为字符数组     * @param s base64字符串     * @return 还原后的字符串数组     * @throws Exception     */    public static byte[] base64ToByteArray(String s) throws Exception {        //字符总长必须是4的倍数        int sLen = s.length();        int numGroups = sLen / 4;        if (4 * numGroups != sLen)            throw new IllegalArgumentException(                    "字串长度必须是4的倍数");        //余1个byte则算漏了两个byte，余2个byte则算漏掉了1个byte        int missingBytesInLastGroup = 0;        int numFullGroups = numGroups;        if (sLen != 0) {            //余2个byte的情况            if (s.charAt(sLen - 1) == '=') {                missingBytesInLastGroup++;                //如果有余数发生，则完整3个byte组数少一个。                numFullGroups--;            }            //余1个byte的情况            if (s.charAt(sLen - 2) == '=')                missingBytesInLastGroup++;        }        //总字节长度        byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];        try {            int inCursor = 0, outCursor = 0;            for (int i = 0; i < numFullGroups; i++) {                int ch0 = base64toInt(s.charAt(inCursor++), base64ToInt);                int ch1 = base64toInt(s.charAt(inCursor++), base64ToInt);                int ch2 = base64toInt(s.charAt(inCursor++), base64ToInt);                int ch3 = base64toInt(s.charAt(inCursor++), base64ToInt);                result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));                result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));                result[outCursor++] = (byte) ((ch2 << 6) | ch3);            }            if (missingBytesInLastGroup != 0) {                int ch0 = base64toInt(s.charAt(inCursor++), base64ToInt);                int ch1 = base64toInt(s.charAt(inCursor++), base64ToInt);                //不管余1还是余2个byte，肯定要解码一个byte。                result[outCursor++] = (byte) ((ch0 << 2) | (ch1 >> 4));                //如果余2个，即差一个才构成3byte，那么还要解码第二个byte。                if (missingBytesInLastGroup == 1) {                    int ch2 = base64toInt(s.charAt(inCursor++), base64ToInt);                    result[outCursor++] = (byte) ((ch1 << 4) | (ch2 >> 2));                }            }        } catch (Exception e) {            throw e;        }        return result;    }    private static int base64toInt(char c, byte[] alphaToInt) throws Exception {        int result = alphaToInt[c];        if (result < 0)            throw new Exception("illegal index!");//非法索引值        return result;    }    static final byte base64ToInt[] = { -1, -1, -1, -1, -1, -1, -1, -1,            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,            -1, -1/*原先是62*/, -1, -1, 62/*原先是-1*/, -1/*原先是63*/, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1,            -1, -1, -1, -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/*原先是-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 };    /**     * @param str原始中文字符串     * @param charset进行二进制字符串转化的字符编码     * @return 二进制字符串     */    public static String encodeBuffer(String str ,String charset){        if (str == null) {            str = StringUtils.EMPTY;        }        try {            return  Base64Utils.byteArrayToBase64(str.getBytes(charset));        } catch (UnsupportedEncodingException e) {            return new String();        }    }    /**     * 此方法为还原中文字符串转化后的二进制字符串     * @param str 二进制字符串     * @param charset 字符编码     * @return  正常中文字符串     */    public static String decodeBuffer(String str ,String charset){        if (str == null) {            return str = StringUtils.EMPTY;        }        try {            byte[] byteStr;            try {                byteStr = Base64Utils.base64ToByteArray(str.trim());            } catch (Exception e) {                return new String();            }            return new String(byteStr,charset);        } catch (UnsupportedEncodingException e) {            return new String();        }    }}

与上面对应的net版本：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.IO;using System.Text.RegularExpressions;namespace ConsoleApplication2{    public class Base64Utils    {        ///**        // * Base64方法重写        // */        //public static void main(String[] args)        //{        //    String aa = "商户私有域";        //    String aaa = byteArrayToBase64(aa.getBytes());        //    System.out.println(aaa);        //    try        //    {        //        String bb = new String(base64ToByteArray(aaa));        //        System.out.println(bb);        //        String tests = encodeBuffer("【厚本金融】", "GBK");        //        System.out.println(tests);        //        System.out.println(decodeBuffer(tests, "GBK"));        //    }        //    catch (Exception e)        //    {        //        // TODO Auto-generated catch block        //        e.printStackTrace();        //    }        //}        /**         * 将字符数组base64字符串         * @param a 要转化的字符数组         * @return  base64字符串         */        public static String byteArrayToBase64(byte[] a)        {            int aLen = a.Length; //总长度            int numFullGroups = aLen / 3; //以3个byte组成以4个字符为一组的组数            int numBytesInPartialGroup = aLen - 3 * numFullGroups; //余数            int resultLen = 4 * ((aLen + 2) / 3); //输出长度总是4倍数，如果有余数，(aLen+2)/3保证将余数包含，并有空间放置填充符=            //StringBuffer result = new StringBuffer(resultLen);            StringBuilder result = new StringBuilder(resultLen);            int inCursor = 0;            for (int i = 0; i < numFullGroups; i++)            {                int byte0 = a[inCursor++] & 0xff;                int byte1 = a[inCursor++] & 0xff;                int byte2 = a[inCursor++] & 0xff;                result.Append(intToBase64[byte0 >> 2]);                result.Append(intToBase64[(byte0 << 4) & 0x3f | (byte1 >> 4)]);                result.Append(intToBase64[(byte1 << 2) & 0x3f | (byte2 >> 6)]);                result.Append(intToBase64[byte2 & 0x3f]);            }            //处理余数            if (numBytesInPartialGroup != 0)            {                int byte0 = a[inCursor++] & 0xff;                result.Append(intToBase64[byte0 >> 2]);                //余数为1                if (numBytesInPartialGroup == 1)                {                    result.Append(intToBase64[(byte0 << 4) & 0x3f]);                    result.Append("==");                }                else                {                    // 余数为2                    int byte1 = a[inCursor++] & 0xff;                    result.Append(intToBase64[(byte0 << 4) & 0x3f | (byte1 >> 4)]);                    result.Append(intToBase64[(byte1 << 2) & 0x3f]);                    result.Append('=');                }            }            return result.ToString();        }        static readonly char[] intToBase64 = { 'A', 'B', 'C', 'D', 'E', 'F', /* 索引 0 ~ 5*/            'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',  /* 索引6 ~ 18*/            'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',  /* 索引 19 ~ 31*/            'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',  /* 索引 32 ~ 44*/            't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5',  /* 索引 45 ~ 57*/            '6', '7', '8', '9', '.'/*原先是字符+*/, '_'/*原先是字符/ */ };  /* 索引58 ~ 63*/        /**         * base64字符串还原为字符数组         * @param s base64字符串         * @return 还原后的字符串数组         * @throws Exception         */        public static byte[] base64ToByteArray(String s)        {            //字符总长必须是4的倍数            int sLen = s.Length;            int numGroups = sLen / 4;            if (4 * numGroups != sLen)                throw new  ArgumentException(                        "字串长度必须是4的倍数");            //余1个byte则算漏了两个byte，余2个byte则算漏掉了1个byte            int missingBytesInLastGroup = 0;            int numFullGroups = numGroups;            if (sLen != 0)            {                //余2个byte的情况                                if (s.charAt(sLen - 1) == '=')                {                    missingBytesInLastGroup++;                    //如果有余数发生，则完整3个byte组数少一个。                    numFullGroups--;                }                //余1个byte的情况                if (s.charAt(sLen - 2) == '=')                    missingBytesInLastGroup++;            }            //总字节长度            byte[] result = new byte[3 * numGroups - missingBytesInLastGroup];            try            {                int inCursor = 0, outCursor = 0;                for (int i = 0; i < numFullGroups; i++)                {                    int ch0 = base64toInt(s.charAt(inCursor++), base64ToInt);                    int ch1 = base64toInt(s.charAt(inCursor++), base64ToInt);                    int ch2 = base64toInt(s.charAt(inCursor++), base64ToInt);                    int ch3 = base64toInt(s.charAt(inCursor++), base64ToInt);                    result[outCursor++] = (byte)((ch0 << 2) | (ch1 >> 4));                    result[outCursor++] = (byte)((ch1 << 4) | (ch2 >> 2));                    result[outCursor++] = (byte)((ch2 << 6) | ch3);                }                if (missingBytesInLastGroup != 0)                {                    int ch0 = base64toInt(s.charAt(inCursor++), base64ToInt);                    int ch1 = base64toInt(s.charAt(inCursor++), base64ToInt);                    //不管余1还是余2个byte，肯定要解码一个byte。                    result[outCursor++] = (byte)((ch0 << 2) | (ch1 >> 4));                    //如果余2个，即差一个才构成3byte，那么还要解码第二个byte。                    if (missingBytesInLastGroup == 1)                    {                        int ch2 = base64toInt(s.charAt(inCursor++), base64ToInt);                        result[outCursor++] = (byte)((ch1 << 4) | (ch2 >> 2));                    }                }            }            catch (Exception e)            {                throw e;            }            return result;        }        private static int base64toInt(char c, int[] alphaToInt)        {            int result = alphaToInt[c];            if (result < 0)                throw new Exception("illegal index!");//非法索引值            return result;        }        static readonly int[] base64ToInt = { 1, 1, 1, 1, 1, 1, 1, 1,            1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,            1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,            1, 1/*原先是62*/, 1, 1, 62/*原先是1*/, 1/*原先是63*/, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 1,            1, 1, 1, 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/*原先是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 };        //static readonly byte[] base64ToInt = { -1, -1, -1, -1, -1, -1, -1, -1,        //    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,        //    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,        //    -1, -1/*原先是62*/, -1, -1, 62/*原先是-1*/, -1/*原先是63*/, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1,        //    -1, -1, -1, -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/*原先是-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 };        /**         * @param str原始中文字符串         * @param charset进行二进制字符串转化的字符编码         * @return 二进制字符串         */        public static String encodeBuffer(String str)        {            if (str == null)            {                str = String.Empty;            }            try            {                return Base64Utils.byteArrayToBase64(Encoding.UTF8.GetBytes(str));            }            catch (Exception e)            {                return String.Empty;            }        }        /**         * 此方法为还原中文字符串转化后的二进制字符串         * @param str 二进制字符串         * @param charset 字符编码         * @return  正常中文字符串         */        public static String decodeBuffer(String str)        {            if (str == null)            {                return str = String.Empty;            }            try            {                byte[] byteStr;                try                {                    byteStr = Base64Utils.base64ToByteArray(str.Trim());                }                catch (Exception e)                {                    return String.Empty;                }                return Encoding.UTF8.GetString(byteStr);            }            catch (Exception e)            {                return String.Empty;            }        }    }}

3des加密，解密：

java版本：

package com.qhong;import java.security.Key;import javax.crypto.Cipher;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESedeKeySpec;import javax.crypto.spec.IvParameterSpec;/*import javax.crypto.Cipher;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESedeKeySpec;import javax.crypto.spec.IvParameterSpec;*/import sun.misc.BASE64Decoder;import sun.misc.BASE64Encoder;public class EncodeUtil {    public static void main(String[] args) throws Exception {       /* byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"); */        byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");        byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };        byte[] data="中国ABCabc123".getBytes("UTF-8");        System.out.println("ECB加密解密");        byte[] str3 = des3EncodeECB(key,data );        byte[] str4 = ees3DecodeECB(key, str3);        System.out.println(new BASE64Encoder().encode(str3));        System.out.println(new String(str4, "UTF-8"));        System.out.println();        System.out.println("CBC加密解密");        byte[] str5 = des3EncodeCBC(key, keyiv, data);        byte[] str6 = des3DecodeCBC(key, keyiv, str5);        System.out.println(new BASE64Encoder().encode(str5));        System.out.println(new String(str6, "UTF-8"));    }    /**     * ECB加密,不要IV     * @param key 密钥     * @param data 明文     * @return Base64编码的密文     * @throws Exception     */    public static byte[] des3EncodeECB(byte[] key, byte[] data)            throws Exception {        Key deskey = null;        DESedeKeySpec spec = new DESedeKeySpec(key);        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");        deskey = keyfactory.generateSecret(spec);        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");        cipher.init(Cipher.ENCRYPT_MODE, deskey);        byte[] bOut = cipher.doFinal(data);        return bOut;    }    /**     * ECB解密,不要IV     * @param key 密钥     * @param data Base64编码的密文     * @return 明文     * @throws Exception     */    public static byte[] ees3DecodeECB(byte[] key, byte[] data)            throws Exception {        Key deskey = null;        DESedeKeySpec spec = new DESedeKeySpec(key);        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");        deskey = keyfactory.generateSecret(spec);        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");        cipher.init(Cipher.DECRYPT_MODE, deskey);        byte[] bOut = cipher.doFinal(data);        return bOut;    }    /**     * CBC加密     * @param key 密钥     * @param keyiv IV     * @param data 明文     * @return Base64编码的密文     * @throws Exception     */    public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data)            throws Exception {        Key deskey = null;        DESedeKeySpec spec = new DESedeKeySpec(key);        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");        deskey = keyfactory.generateSecret(spec);        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");        IvParameterSpec ips = new IvParameterSpec(keyiv);        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);        byte[] bOut = cipher.doFinal(data);        return bOut;    }    /**     * CBC解密     * @param key 密钥     * @param keyiv IV     * @param data Base64编码的密文     * @return 明文     * @throws Exception     */    public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data)            throws Exception {        Key deskey = null;        DESedeKeySpec spec = new DESedeKeySpec(key);        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");        deskey = keyfactory.generateSecret(spec);        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");        IvParameterSpec ips = new IvParameterSpec(keyiv);        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);        byte[] bOut = cipher.doFinal(data);        return bOut;    }}

NET版本：（只有ECS）

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;using System.Threading.Tasks;using System.Security.Cryptography;namespace Rongzi.ToolKits.Core.HBJR{    public class EncodeUtil    {        /**   * ECB加密,不要IV   * @param key 密钥   * @param data 明文   * @return Base64编码的密文   * @throws Exception   */        public static byte[] des3EncodeECB(byte[] key, byte[] data)        {            // Create a MemoryStream.            MemoryStream mStream = new MemoryStream();            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();            tdsp.Mode = CipherMode.ECB;            tdsp.Padding = PaddingMode.PKCS7;            // Create a CryptoStream using the MemoryStream             // and the passed key and initialization vector (IV).            CryptoStream cStream = new CryptoStream(mStream,                tdsp.CreateEncryptor(key, null),                CryptoStreamMode.Write);            // Write the byte array to the crypto stream and flush it.            cStream.Write(data, 0, data.Length);            cStream.FlushFinalBlock();            // Get an array of bytes from the             // MemoryStream that holds the             // encrypted data.            byte[] ret = mStream.ToArray();            // Close the streams.            cStream.Close();            mStream.Close();            // Return the encrypted buffer.            return ret;        }        /**         * ECB解密,不要IV         * @param key 密钥         * @param data Base64编码的密文         * @return 明文         * @throws Exception         */        public static byte[] ees3DecodeECB(byte[] key, byte[] data)        {            try            {                // Create a new MemoryStream using the passed                 // array of encrypted data.                MemoryStream msDecrypt = new MemoryStream(data);                TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();                tdsp.Mode = CipherMode.ECB;                tdsp.Padding = PaddingMode.PKCS7;                // Create a CryptoStream using the MemoryStream                 // and the passed key and initialization vector (IV).                CryptoStream csDecrypt = new CryptoStream(msDecrypt,                    tdsp.CreateDecryptor(key, null),                    CryptoStreamMode.Read);                // Create buffer to hold the decrypted data.                byte[] fromEncrypt = new byte[data.Length];                // Read the decrypted data out of the crypto stream                // and place it into the temporary buffer.                csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length);                //Convert the buffer into a string and return it.                return fromEncrypt;            }            catch (CryptographicException e)            {                Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);                return null;            }        }    }}