android java 3des加密 ECB/CBC

import java.security.Key;import javax.crypto.Cipher;import javax.crypto.SecretKeyFactory;import javax.crypto.spec.DESedeKeySpec;import javax.crypto.spec.IvParameterSpec;import android.util.Base64;public class Des3 {public Des3() throws Exception {//密钥byte[] key=Base64.decode("12345678901234567890123456789000", Base64.DEFAULT);byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };//原始数据String mainStr = "达达ABCacb123";//原始数据转bytebyte[] data = mainStr.getBytes("UTF-8");System.out.println("原始数据:" + mainStr);System.out.println("ECB加密解密");//加密后的byte[]byte[] encodeByte_ECB = des3EncodeECB(key, data);//加密后的String   需把加密的byte[]转base64String encodeString_ECB =Base64.encodeToString(encodeByte_ECB, Base64.DEFAULT);System.out.println("加密的数据是:" + encodeString_ECB);//解密后的原始byte[] 需把加密后的byte[]转bass64byte[] decodeByteMain_ECB=Base64.decode(encodeString_ECB, Base64.DEFAULT);//解密后的byte[]byte[] decodeByte_ECB = ees3DecodeECB(key, decodeByteMain_ECB);//解密后的StringString decodeString_ECB = new String(decodeByte_ECB, "UTF-8");System.out.println("解密后的数据是:" + decodeString_ECB);System.out.println("CBC加密解密");//加密后的byte[]byte[] encodeByte_CBC = des3EncodeCBC(key, keyiv,data);//加密后的String   需把加密的byte[]转base64String encodeString_CBC =Base64.encodeToString(encodeByte_CBC, Base64.DEFAULT);System.out.println("加密的数据是:" + encodeString_CBC);//解密后的原始byte[] 需把加密后的byte[]转bass64byte[] decodeByteMain_CBC=Base64.decode(encodeString_CBC, Base64.DEFAULT);//解密后的byte[]byte[] decodeByte_CBC = des3DecodeCBC(key, keyiv, decodeByteMain_CBC);//解密后的StringString decodeString_CBC = new String(decodeByte_CBC, "UTF-8");System.out.println("解密后的数据是:" + decodeString_CBC);}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;}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;}    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;    }       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;    }}
转载自：http://blog.sina.com.cn/s/blog_677fb16e01018eqw.html
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