IllegalArgumentException：IV缓冲区对于给定的偏移量/长度组合太短

Question

我有一个应用程序，在PHP中使用openssl_encrypt加密文本，方法如下。（使用与“239422AE7940144F”相同的盐和iv值）

function encrypt_password($password) {
    define('AES_256_CBC', 'aes-256-cbc');
    $sessionId = $password;
    //random number for encrtyption(salt)
    $salt = '239422ae7940144f';
    $iv = $salt; //cipher length
    $encryptedSession = openssl_encrypt($sessionId, AES_256_CBC, $salt, 0, $iv);
    return array('encryptedPassword' => $encryptedSession, 'salt' => $salt);
}

function decrypt_password($result) {
    define('AES_256_CBC', 'aes-256-cbc');
    $vPassword = 'xUP9PwhcXm5xbKIfiSxMCA==';
    //random number for descrypt(salt)
    $salt = '239422ae7940144f';
    $iv = $salt; //cipher length.
    $decrypted = openssl_decrypt($vPassword, AES_256_CBC, $salt, 0, $iv);
    return $decrypted;
}

密码“abc123”加密提供“xup9pwhcxm5xbkifisxmca==”，解密则返回“abc123”。

    final byte[] secretKey = javax.xml.bind.DatatypeConverter.parseHexBinary("239422ae7940144f");
    final byte[] initVector = javax.xml.bind.DatatypeConverter.parseHexBinary("239422ae7940144f");

Answer 1

这个“sessionid”的长度很短。长度必须至少为“IV”