php实现aes-128-ecb SHA1PRNG 加解密

在PHP中实现Java下使用SecureRandom SHA1PRNG算法进行AES-128-ECB（AES/ECB/PKCS5Padding）加解密：

function encrypt($data, $password)
{
    $key = substr(openssl_digest(openssl_digest($password, 'sha1', true), 'sha1', true), 0, 16);
    $result = openssl_encrypt($data, 'AES-128-ECB', $key);
    return $result;
}

function decrypt($data, $password)
{
    $key = substr(openssl_digest(openssl_digest($password, 'sha1', true), 'sha1', true), 0, 16);
    return openssl_decrypt($data, 'AES-128-ECB', $key);
}