android AES加密解密实现
2017-10-11 15:48
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import android.util.Base64; import android.util.Log; import java.security.Key; import javax.crypto.Cipher; import javax.crypto.SecretKeyFactory; import javax.crypto.spec.DESedeKeySpec; import javax.crypto.spec.IvParameterSpec; /** * Created by Jane on 2017/10/10. */ public class CryptoTools { public static final String keyStr = "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"; private static byte[] key= Base64.decode(keyStr.getBytes(),Base64.DEFAULT); private static byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 }; /** * ECB加密,不要IV * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeECB(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 data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] ees3DecodeECB(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"); Log.i("des", "decode init before"); cipher.init(Cipher.DECRYPT_MODE, deskey); Log.i("des", "decode init after" + new String(data,"UTF-8")); byte[] bOut = cipher.doFinal(data); Log.i("des", "decode doFinal after"); return bOut; } /** * CBC加密 * @param data 明文 * @return Base64编码的密文 * @throws Exception */ public static byte[] des3EncodeCBC( 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 data Base64编码的密文 * @return 明文 * @throws Exception */ public static byte[] des3DecodeCBC(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; } } 加密: byte[] temp = CryptoTools.des3EncodeECB(getString(R.string.app_url_use).getBytes("UTF-8")); String message = new String(Base64.encode(temp, Base64.DEFAULT),"UTF-8"); 解密: byte[] tmpt = Base64.decode(getString(R.string.app_url_use).getBytes("UTF-8"), Base64.DEFAULT); tmpt = CryptoTools.ees3DecodeECB(tmpt); String str = new String(tmpt, "UTF-8"); 参考博友的文章来弄得 谢谢 只是找不到连接在哪里了 抱歉
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