Android使用AES进行加密解密

Android使用AES进行加密/解密

private static byte[] encrypt(byte[] raw, byte[] clear) throws Exception {    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");    Cipher cipher = Cipher.getInstance("AES");    cipher.init(Cipher.ENCRYPT_MODE, skeySpec);    byte[] encrypted = cipher.doFinal(clear);    return encrypted;}private static byte[] decrypt(byte[] raw, byte[] encrypted) throws Exception {    SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");    Cipher cipher = Cipher.getInstance("AES");    cipher.init(Cipher.DECRYPT_MODE, skeySpec);    byte[] decrypted = cipher.doFinal(encrypted);    return decrypted;}

并像这样调用它们：

ByteArrayOutputStream baos = new ByteArrayOutputStream();  bm.compress(Bitmap.CompressFormat.PNG, 100, baos); // bm is the bitmap object   byte[] b = baos.toByteArray();  byte[] keyStart = "this is a key".getBytes();KeyGenerator kgen = KeyGenerator.getInstance("AES");SecureRandom sr = SecureRandom.getInstance("SHA1PRNG");sr.setSeed(keyStart);kgen.init(128, sr); // 192 and 256 bits may not be availableSecretKey skey = kgen.generateKey();byte[] key = skey.getEnpred();    // encryptbyte[] encryptedData = encrypt(key,b);// decryptbyte[] decryptedData = decrypt(key,encryptedData);

这应该可行，我现在在项目中使用类似的代码。