this code works well before android 6.0, but get an error on 6.0 if encrypted file size less than about 1k bytes.
public static byte[] decode(byte[] decrypteSrcBuffer) throws Exception {
Key deskey = null;
DESedeKeySpec spec = new DESedeKeySpec(mKeyBytes);
SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");
deskey = keyfactory.generateSecret(spec);
Cipher cipher = Cipher.getInstance("desede/CBC/PKCS5Padding");
IvParameterSpec ips = new IvParameterSpec(iv.getBytes());
cipher.init(Cipher.DECRYPT_MODE, deskey, ips);
byte[] decryptData = cipher.doFinal(decrypteSrcBuffer);
return decryptData;
}
Error info:
javax.crypto.BadPaddingException: error:1e000065:Cipher functions:OPENSSL_internal:BAD_DECRYPT
at com.android.org.conscrypt.NativeCrypto.EVP_CipherFinal_ex(Native Method)
at com.android.org.conscrypt.OpenSSLCipher$EVP_CIPHER.doFinalInternal(OpenSSLCipher.java:568)
at com.android.org.conscrypt.OpenSSLCipher.engineDoFinal(OpenSSLCipher.java:350)
at javax.crypto.Cipher.doFinal(Cipher.java:2056)