线程java.lang.IllegalStateException中的异常：未初始化密码

Question

在运行时，解密密文时，使用Cipher获取java.lang.IllegalStateException未初始化的消息我的代码如下：

public String decrypt(String cipherText) throws SecurityException {
        String clearText = null;
        try {
            cipher = Cipher.getInstance("AES/OFB/NoPadding");
            byte[] cipherTextBytes = Base64.decodeBase64(cipherText.getBytes());
            byte[] iv = ArrayUtils.subarray(cipherTextBytes, 0, INIT_VECTOR_LENGTH);
            cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(iv));
            byte[] decryptedBytes = cipher
                    .doFinal(ArrayUtils.subarray(cipherTextBytes, INIT_VECTOR_LENGTH, cipherTextBytes.length));
            clearText = new String(decryptedBytes, CHARACTER_ENCODING).trim();
        } catch (InvalidKeyException | IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException
                | NoSuchAlgorithmException | NoSuchPaddingException | InvalidAlgorithmParameterException e) {
            throw new SecurityException(e);
        }
        return clearText;
    }

线程“ pool-5-thread-3”中的异常java.lang.IllegalStateException：密码未初始化在javax.crypto.Cipher.checkCipherState（Cipher.java:1749）在javax.crypto.Cipher.doFinal（Cipher.java:2156）

这是间歇性问题，经过一段时间后，它解密密文并按预期工作。

Answer 1