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如何避免字符串截取半个汉字

热度:59   发布时间:2016-04-22 03:00:01.0
如何处理字符串截取半个汉字
我要弄一个加密算法,但是会有汉字的加密,对于加密的字符串是进行字节处理的,但是会有中文加密,要如何处理那截取出来的半个中文,每次截取半个中文都是一个? 解析之后都是63 不管什么中文 处理之后都是这样,求个解决的办法

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不懂,帮顶。祝楼主好运
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这里有一个加密算法,也许能激发你的灵感


好像是火龙果大侠的杰作:
Java code
import java.security.Key;import java.util.Arrays;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;import test.temp23;//http://topic.csdn.net/u/20101112/11/906A2C5D-5F3B-4284-9DE8-DDB3A18B0BA0.htmlpublic class Des {         public static void main(String[] args) throws Exception {    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;    }}
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