Java Android中的AES-256-CBC加密

我使用库进行加密和解密，并在的帮助下。解密工作正常。 但在加密的情况下，会发生这种错误

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

我正在使用

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

String encrypted = AESUtil.encrypt("My PlainText to encrypt");

伊索寓言

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

public static String encrypt(String src) {
    try {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, makeKey(), makeIv());
        return Base64.encodeBytes(cipher.doFinal(src.getBytes()));
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

将此用于PKCS5P添加加密正在工作，但无法使用该方法解密。使用NoPadding进行加密时，会显示上述错误

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

public static String decrypt(String src) {
        String decrypted = "";
        try {
            Cipher cipher = Cipher.getInstance("AES/CBC/NoPadding");
            byte[] array= Base64.decode(src);
            byte[] ivData=Arrays.copyOfRange(array,0,16);
            byte[] encrypted = Arrays.copyOfRange(array, 16, array.length);
            // Init the cipher with decrypt mode, key, and IV bytes array (no more hardcoded)
            cipher.init(Cipher.DECRYPT_MODE, makeKey(), new IvParameterSpec(ivData));
            // Decrypt same old way
            decrypted = new String(cipher.doFinal(encrypted));
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return decrypted;
    }

makeIv（）

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

makeKey（）

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

四、关键是

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH

private static final String ENCRYPTION_KEY = qwertyuiopasdfghjklzxcvbnmqwerty";
    private static final String ENCRYPTION_IV = "qbmocwtttkttpqvv";

---

请帮助我进行加密。

在加密方法中，您没有将IV预加到密文中。IV必须是不可预测的（阅读：random）。不要使用静态IV（静态字符串的散列仍然是静态的），因为这会使密码具有确定性，因此在语义上不安全。观察密文的攻击者可以确定以前何时发送相同的消息前缀。IV不是秘密，所以你可以把它和密文一起发送。通常，它只是在密文前加上前缀并在解密前切掉。嗨，你能把你的最终代码作为答案吗？

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.vinu.aessamble/com.example.vinu.aessamble.MainActivity}: java.lang.RuntimeException: javax.crypto.IllegalBlockSizeException:error:1e06c06a:Cipher functions:EVP_EncryptFinal_ex:DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH