android 报错 java.security.NoSuchAlgorithmException: Provider BC does not provide SM4/CBC/PKCS5Padding

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java后台写法

Cipher cipher = Cipher.getInstance(algorithmName, BouncyCastleProvider.PROVIDER_NAME);
Key sm4Key = new SecretKeySpec(key, ALGORITHM_NAME);
IvParameterSpec ivParameterSpec = new IvParameterSpec(iv);
cipher.init(mode, sm4Key, ivParameterSpec);
return cipher;

android 正确的使用BouncyCastleProvider

Cipher cipher = Cipher.getInstance(ALGORITHM_NAME_CBC_PADDING, new BouncyCastleProvider());
Key sm4Key = new SecretKeySpec(key, "SM4");
cipher.init(Cipher.ENCRYPT_MODE, sm4Key);
cipher.doFinal(plain);

如果安卓使用BouncyCastleProvider.PROVIDER_NAME 就会报错。要使用new BouncyCastleProvider()