<?php

if (class_exists('ParagonIE_Sodium_Core_Poly1305', false)) {
    return;
}

/**
 * Class ParagonIE_Sodium_Core_Poly1305
 */
abstract class ParagonIE_Sodium_Core_Poly1305 extends ParagonIE_Sodium_Core_Util
{
    const BLOCK_SIZE = 16;

    /**
     * @internal You should not use this directly from another application
     *
     * @param string $m
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    public static function onetimeauth($m, $key)
    {
        if (self::strlen($key) < 32) {
            throw new InvalidArgumentException(
                'Key must be 32 bytes long.'
            );
        }
        $state = new ParagonIE_Sodium_Core_Poly1305_State(
            self::substr($key, 0, 32)
        );
        return $state
            ->update($m)
            ->finish();
    }

    /**
     * @internal You should not use this directly from another application
     *
     * @param string $mac
     * @param string $m
     * @param string $key
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    public static function onetimeauth_verify($mac, $m, $key)
    {
        if (self::strlen($key) < 32) {
            throw new InvalidArgumentException(
                'Key must be 32 bytes long.'
            );
        }
        $state = new ParagonIE_Sodium_Core_Poly1305_State(
            self::substr($key, 0, 32)
        );
        $calc = $state
            ->update($m)
            ->finish();
        return self::verify_16($calc, $mac);
    }
}

• [D] Base64
• [D] ChaCha20
• [D] Curve25519
• [D] Poly1305
• [D] SecretStream
• [F] BLAKE2b.php
  Delete
• [F] ChaCha20.php
  Delete
• [F] Curve25519.php
  Delete
• [F] Ed25519.php
  Delete
• [F] HChaCha20.php
  Delete
• [F] HSalsa20.php
  Delete
• [F] Poly1305.php
  Delete
• [F] Ristretto255.php
  Delete
• [F] Salsa20.php
  Delete
• [F] SipHash.php
  Delete
• [F] Util.php
  Delete
• [F] X25519.php
  Delete
• [F] XChaCha20.php
  Delete
• [F] XSalsa20.php
  Delete

Service Section

Our Services: Streamlining Your Payment Experience with Excellence

Discover how our services are designed to enhance your NFC Pay experience with convenience, security, and innovative solutions. From managing transactions to secure payments, we are dedicated to providing seamless support every step of the way.

Secure Card Storage

Easily save your credit and debit card details within our app for quick and secure transactions. This feature ensures that your payment information is protected with advanced encryption and can be used for future purchases with just a tap.

Effortless Money Transfers

Transfer funds quickly and securely between users with our streamlined money transfer service. Simply select the recipient, enter the amount, and authorize the transaction for instant, hassle-free transfers.

Merchant Account Setup

Activate your merchant account effortlessly to start receiving payments. Our intuitive setup process ensures that you can begin accepting transactions smoothly, helping your business thrive with minimal setup time.

Real-Time Transaction Tracking

Keep track of all your transactions in real time through our app. Monitor payment statuses, view transaction history, and manage your account efficiently, ensuring complete control over your financial activities.

Customer Support

Our dedicated support team is available to assist you with any queries or issues. Whether you need help with setting up your account or resolving transaction-related questions, we’re here to provide prompt and reliable assistance.