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<?php

require_once dirname(dirname(__FILE__)) . '/autoload.php';

/**
 * This file will monkey patch the pure-PHP implementation in place of the
 * PECL functions and constants, but only if they do not already exist.
 *
 * Thus, the functions or constants just proxy to the appropriate
 * ParagonIE_Sodium_Compat method or class constant, respectively.
 */
foreach (array(
    'BASE64_VARIANT_ORIGINAL',
    'BASE64_VARIANT_ORIGINAL_NO_PADDING',
    'BASE64_VARIANT_URLSAFE',
    'BASE64_VARIANT_URLSAFE_NO_PADDING',
    'CRYPTO_AEAD_CHACHA20POLY1305_KEYBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_NSECBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_NPUBBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_ABYTES',
    'CRYPTO_AEAD_AES256GCM_KEYBYTES',
    'CRYPTO_AEAD_AES256GCM_NSECBYTES',
    'CRYPTO_AEAD_AES256GCM_NPUBBYTES',
    'CRYPTO_AEAD_AES256GCM_ABYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_IETF_KEYBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_IETF_NSECBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_IETF_NPUBBYTES',
    'CRYPTO_AEAD_CHACHA20POLY1305_IETF_ABYTES',
    'CRYPTO_AEAD_XCHACHA20POLY1305_IETF_KEYBYTES',
    'CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NSECBYTES',
    'CRYPTO_AEAD_XCHACHA20POLY1305_IETF_NPUBBYTES',
    'CRYPTO_AEAD_XCHACHA20POLY1305_IETF_ABYTES',
    'CRYPTO_AUTH_BYTES',
    'CRYPTO_AUTH_KEYBYTES',
    'CRYPTO_BOX_SEALBYTES',
    'CRYPTO_BOX_SECRETKEYBYTES',
    'CRYPTO_BOX_PUBLICKEYBYTES',
    'CRYPTO_BOX_KEYPAIRBYTES',
    'CRYPTO_BOX_MACBYTES',
    'CRYPTO_BOX_NONCEBYTES',
    'CRYPTO_BOX_SEEDBYTES',
    'CRYPTO_KDF_BYTES_MIN',
    'CRYPTO_KDF_BYTES_MAX',
    'CRYPTO_KDF_CONTEXTBYTES',
    'CRYPTO_KDF_KEYBYTES',
    'CRYPTO_KX_BYTES',
    'CRYPTO_KX_KEYPAIRBYTES',
    'CRYPTO_KX_PRIMITIVE',
    'CRYPTO_KX_SEEDBYTES',
    'CRYPTO_KX_PUBLICKEYBYTES',
    'CRYPTO_KX_SECRETKEYBYTES',
    'CRYPTO_KX_SESSIONKEYBYTES',
    'CRYPTO_GENERICHASH_BYTES',
    'CRYPTO_GENERICHASH_BYTES_MIN',
    'CRYPTO_GENERICHASH_BYTES_MAX',
    'CRYPTO_GENERICHASH_KEYBYTES',
    'CRYPTO_GENERICHASH_KEYBYTES_MIN',
    'CRYPTO_GENERICHASH_KEYBYTES_MAX',
    'CRYPTO_PWHASH_SALTBYTES',
    'CRYPTO_PWHASH_STRPREFIX',
    'CRYPTO_PWHASH_ALG_ARGON2I13',
    'CRYPTO_PWHASH_ALG_ARGON2ID13',
    'CRYPTO_PWHASH_MEMLIMIT_INTERACTIVE',
    'CRYPTO_PWHASH_OPSLIMIT_INTERACTIVE',
    'CRYPTO_PWHASH_MEMLIMIT_MODERATE',
    'CRYPTO_PWHASH_OPSLIMIT_MODERATE',
    'CRYPTO_PWHASH_MEMLIMIT_SENSITIVE',
    'CRYPTO_PWHASH_OPSLIMIT_SENSITIVE',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_SALTBYTES',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_STRPREFIX',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_INTERACTIVE',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_INTERACTIVE',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_MEMLIMIT_SENSITIVE',
    'CRYPTO_PWHASH_SCRYPTSALSA208SHA256_OPSLIMIT_SENSITIVE',
    'CRYPTO_SCALARMULT_BYTES',
    'CRYPTO_SCALARMULT_SCALARBYTES',
    'CRYPTO_SHORTHASH_BYTES',
    'CRYPTO_SHORTHASH_KEYBYTES',
    'CRYPTO_SECRETBOX_KEYBYTES',
    'CRYPTO_SECRETBOX_MACBYTES',
    'CRYPTO_SECRETBOX_NONCEBYTES',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_ABYTES',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_HEADERBYTES',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_KEYBYTES',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PUSH',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_PULL',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_REKEY',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_TAG_FINAL',
    'CRYPTO_SECRETSTREAM_XCHACHA20POLY1305_MESSAGEBYTES_MAX',
    'CRYPTO_SIGN_BYTES',
    'CRYPTO_SIGN_SEEDBYTES',
    'CRYPTO_SIGN_PUBLICKEYBYTES',
    'CRYPTO_SIGN_SECRETKEYBYTES',
    'CRYPTO_SIGN_KEYPAIRBYTES',
    'CRYPTO_STREAM_KEYBYTES',
    'CRYPTO_STREAM_NONCEBYTES',
    'CRYPTO_STREAM_XCHACHA20_KEYBYTES',
    'CRYPTO_STREAM_XCHACHA20_NONCEBYTES',
    'LIBRARY_MAJOR_VERSION',
    'LIBRARY_MINOR_VERSION',
    'LIBRARY_VERSION_MAJOR',
    'LIBRARY_VERSION_MINOR',
    'VERSION_STRING'
    ) as $constant
) {
    if (!defined("SODIUM_$constant") && defined("ParagonIE_Sodium_Compat::$constant")) {
        define("SODIUM_$constant", constant("ParagonIE_Sodium_Compat::$constant"));
    }
}
if (!is_callable('sodium_add')) {
    /**
     * @see ParagonIE_Sodium_Compat::add()
     * @param string $string1
     * @param string $string2
     * @return void
     * @throws SodiumException
     */
    function sodium_add(&$string1, $string2)
    {
        ParagonIE_Sodium_Compat::add($string1, $string2);
    }
}
if (!is_callable('sodium_base642bin')) {
    /**
     * @see ParagonIE_Sodium_Compat::bin2base64()
     * @param string $string
     * @param int $variant
     * @param string $ignore
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_base642bin($string, $variant, $ignore ='')
    {
        return ParagonIE_Sodium_Compat::base642bin($string, $variant, $ignore);
    }
}
if (!is_callable('sodium_bin2base64')) {
    /**
     * @see ParagonIE_Sodium_Compat::bin2base64()
     * @param string $string
     * @param int $variant
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_bin2base64($string, $variant)
    {
        return ParagonIE_Sodium_Compat::bin2base64($string, $variant);
    }
}
if (!is_callable('sodium_bin2hex')) {
    /**
     * @see ParagonIE_Sodium_Compat::hex2bin()
     * @param string $string
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_bin2hex($string)
    {
        return ParagonIE_Sodium_Compat::bin2hex($string);
    }
}
if (!is_callable('sodium_compare')) {
    /**
     * @see ParagonIE_Sodium_Compat::compare()
     * @param string $string1
     * @param string $string2
     * @return int
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_compare($string1, $string2)
    {
        return ParagonIE_Sodium_Compat::compare($string1, $string2);
    }
}
if (!is_callable('sodium_crypto_aead_aes256gcm_decrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_decrypt()
     * @param string $ciphertext
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string|bool
     */
    function sodium_crypto_aead_aes256gcm_decrypt($ciphertext, $additional_data, $nonce, $key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_decrypt(
                $ciphertext,
                $additional_data,
                $nonce,
                $key
            );
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            if (($ex instanceof SodiumException) && ($ex->getMessage() === 'AES-256-GCM is not available')) {
                throw $ex;
            }
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_aead_aes256gcm_encrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_encrypt()
     * @param string $message
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_aead_aes256gcm_encrypt($message, $additional_data, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_encrypt($message, $additional_data, $nonce, $key);
    }
}
if (!is_callable('sodium_crypto_aead_aes256gcm_is_available')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_is_available()
     * @return bool
     */
    function sodium_crypto_aead_aes256gcm_is_available()
    {
        return ParagonIE_Sodium_Compat::crypto_aead_aes256gcm_is_available();
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_decrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_decrypt()
     * @param string $ciphertext
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string|bool
     */
    function sodium_crypto_aead_chacha20poly1305_decrypt($ciphertext, $additional_data, $nonce, $key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_decrypt(
                $ciphertext,
                $additional_data,
                $nonce,
                $key
            );
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_encrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_encrypt()
     * @param string $message
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_aead_chacha20poly1305_encrypt($message, $additional_data, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_encrypt(
            $message,
            $additional_data,
            $nonce,
            $key
        );
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_aead_chacha20poly1305_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_keygen();
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_ietf_decrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_decrypt()
     * @param string $message
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string|bool
     */
    function sodium_crypto_aead_chacha20poly1305_ietf_decrypt($message, $additional_data, $nonce, $key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_decrypt(
                $message,
                $additional_data,
                $nonce,
                $key
            );
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_ietf_encrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_encrypt()
     * @param string $message
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_aead_chacha20poly1305_ietf_encrypt($message, $additional_data, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_encrypt(
            $message,
            $additional_data,
            $nonce,
            $key
        );
    }
}
if (!is_callable('sodium_crypto_aead_chacha20poly1305_ietf_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_aead_chacha20poly1305_ietf_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_aead_chacha20poly1305_ietf_keygen();
    }
}
if (!is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_decrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_decrypt()
     * @param string $ciphertext
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string|bool
     */
    function sodium_crypto_aead_xchacha20poly1305_ietf_decrypt($ciphertext, $additional_data, $nonce, $key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_decrypt(
                $ciphertext,
                $additional_data,
                $nonce,
                $key,
                true
            );
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_encrypt')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_encrypt()
     * @param string $message
     * @param string $additional_data
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_aead_xchacha20poly1305_ietf_encrypt(
        $message,
        $additional_data,
        $nonce,
        $key
    ) {
        return ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_encrypt(
            $message,
            $additional_data,
            $nonce,
            $key,
            true
        );
    }
}
if (!is_callable('sodium_crypto_aead_xchacha20poly1305_ietf_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_aead_xchacha20poly1305_ietf_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_aead_xchacha20poly1305_ietf_keygen();
    }
}
if (!is_callable('sodium_crypto_auth')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_auth()
     * @param string $message
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_auth($message, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_auth($message, $key);
    }
}
if (!is_callable('sodium_crypto_auth_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_auth_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_auth_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_auth_keygen();
    }
}
if (!is_callable('sodium_crypto_auth_verify')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_auth_verify()
     * @param string $mac
     * @param string $message
     * @param string $key
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_auth_verify($mac, $message, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_auth_verify($mac, $message, $key);
    }
}
if (!is_callable('sodium_crypto_box')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box()
     * @param string $message
     * @param string $nonce
     * @param string $key_pair
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box($message, $nonce, $key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_box($message, $nonce, $key_pair);
    }
}
if (!is_callable('sodium_crypto_box_keypair')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_keypair()
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_keypair()
    {
        return ParagonIE_Sodium_Compat::crypto_box_keypair();
    }
}
if (!is_callable('sodium_crypto_box_keypair_from_secretkey_and_publickey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey()
     * @param string $secret_key
     * @param string $public_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_keypair_from_secretkey_and_publickey($secret_key, $public_key)
    {
        return ParagonIE_Sodium_Compat::crypto_box_keypair_from_secretkey_and_publickey($secret_key, $public_key);
    }
}
if (!is_callable('sodium_crypto_box_open')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_open()
     * @param string $ciphertext
     * @param string $nonce
     * @param string $key_pair
     * @return string|bool
     */
    function sodium_crypto_box_open($ciphertext, $nonce, $key_pair)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_box_open($ciphertext, $nonce, $key_pair);
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_box_publickey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_publickey()
     * @param string $key_pair
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_publickey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_box_publickey($key_pair);
    }
}
if (!is_callable('sodium_crypto_box_publickey_from_secretkey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_publickey_from_secretkey()
     * @param string $secret_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_publickey_from_secretkey($secret_key)
    {
        return ParagonIE_Sodium_Compat::crypto_box_publickey_from_secretkey($secret_key);
    }
}
if (!is_callable('sodium_crypto_box_seal')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_seal()
     * @param string $message
     * @param string $public_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_seal($message, $public_key)
    {
        return ParagonIE_Sodium_Compat::crypto_box_seal($message, $public_key);
    }
}
if (!is_callable('sodium_crypto_box_seal_open')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_seal_open()
     * @param string $message
     * @param string $key_pair
     * @return string|bool
     * @throws SodiumException
     */
    function sodium_crypto_box_seal_open($message, $key_pair)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_box_seal_open($message, $key_pair);
        } catch (SodiumException $ex) {
            if ($ex->getMessage() === 'Argument 2 must be CRYPTO_BOX_KEYPAIRBYTES long.') {
                throw $ex;
            }
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_box_secretkey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_secretkey()
     * @param string $key_pair
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_secretkey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_box_secretkey($key_pair);
    }
}
if (!is_callable('sodium_crypto_box_seed_keypair')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_box_seed_keypair()
     * @param string $seed
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_box_seed_keypair($seed)
    {
        return ParagonIE_Sodium_Compat::crypto_box_seed_keypair($seed);
    }
}
if (!is_callable('sodium_crypto_generichash')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_generichash()
     * @param string $message
     * @param string|null $key
     * @param int $length
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_generichash($message, $key = null, $length = 32)
    {
        return ParagonIE_Sodium_Compat::crypto_generichash($message, $key, $length);
    }
}
if (!is_callable('sodium_crypto_generichash_final')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_generichash_final()
     * @param string|null $state
     * @param int $outputLength
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_generichash_final(&$state, $outputLength = 32)
    {
        return ParagonIE_Sodium_Compat::crypto_generichash_final($state, $outputLength);
    }
}
if (!is_callable('sodium_crypto_generichash_init')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_generichash_init()
     * @param string|null $key
     * @param int $length
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_generichash_init($key = null, $length = 32)
    {
        return ParagonIE_Sodium_Compat::crypto_generichash_init($key, $length);
    }
}
if (!is_callable('sodium_crypto_generichash_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_generichash_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_generichash_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_generichash_keygen();
    }
}
if (!is_callable('sodium_crypto_generichash_update')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_generichash_update()
     * @param string|null $state
     * @param string $message
     * @return void
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_generichash_update(&$state, $message = '')
    {
        ParagonIE_Sodium_Compat::crypto_generichash_update($state, $message);
    }
}
if (!is_callable('sodium_crypto_kdf_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_kdf_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kdf_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_kdf_keygen();
    }
}
if (!is_callable('sodium_crypto_kdf_derive_from_key')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_kdf_derive_from_key()
     * @param int $subkey_length
     * @param int $subkey_id
     * @param string $context
     * @param string $key
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kdf_derive_from_key($subkey_length, $subkey_id, $context, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_kdf_derive_from_key(
            $subkey_length,
            $subkey_id,
            $context,
            $key
        );
    }
}
if (!is_callable('sodium_crypto_kx')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_kx()
     * @param string $my_secret
     * @param string $their_public
     * @param string $client_public
     * @param string $server_public
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_kx($my_secret, $their_public, $client_public, $server_public)
    {
        return ParagonIE_Sodium_Compat::crypto_kx(
            $my_secret,
            $their_public,
            $client_public,
            $server_public
        );
    }
}
if (!is_callable('sodium_crypto_kx_seed_keypair')) {
    /**
     * @param string $seed
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kx_seed_keypair($seed)
    {
        return ParagonIE_Sodium_Compat::crypto_kx_seed_keypair($seed);
    }
}
if (!is_callable('sodium_crypto_kx_keypair')) {
    /**
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kx_keypair()
    {
        return ParagonIE_Sodium_Compat::crypto_kx_keypair();
    }
}
if (!is_callable('sodium_crypto_kx_client_session_keys')) {
    /**
     * @param string $client_key_pair
     * @param string $server_key
     * @return array{0: string, 1: string}
     * @throws SodiumException
     */
    function sodium_crypto_kx_client_session_keys($client_key_pair, $server_key)
    {
        return ParagonIE_Sodium_Compat::crypto_kx_client_session_keys($client_key_pair, $server_key);
    }
}
if (!is_callable('sodium_crypto_kx_server_session_keys')) {
    /**
     * @param string $server_key_pair
     * @param string $client_key
     * @return array{0: string, 1: string}
     * @throws SodiumException
     */
    function sodium_crypto_kx_server_session_keys($server_key_pair, $client_key)
    {
        return ParagonIE_Sodium_Compat::crypto_kx_server_session_keys($server_key_pair, $client_key);
    }
}
if (!is_callable('sodium_crypto_kx_secretkey')) {
    /**
     * @param string $key_pair
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kx_secretkey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_kx_secretkey($key_pair);
    }
}
if (!is_callable('sodium_crypto_kx_publickey')) {
    /**
     * @param string $key_pair
     * @return string
     * @throws Exception
     */
    function sodium_crypto_kx_publickey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_kx_publickey($key_pair);
    }
}
if (!is_callable('sodium_crypto_pwhash')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash()
     * @param int $length
     * @param string $passwd
     * @param string $salt
     * @param int $opslimit
     * @param int $memlimit
     * @param int|null $algo
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash($length, $passwd, $salt, $opslimit, $memlimit, $algo = null)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash($length, $passwd, $salt, $opslimit, $memlimit, $algo);
    }
}
if (!is_callable('sodium_crypto_pwhash_str')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_str()
     * @param string $passwd
     * @param int $opslimit
     * @param int $memlimit
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash_str($passwd, $opslimit, $memlimit)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_str($passwd, $opslimit, $memlimit);
    }
}
if (!is_callable('sodium_crypto_pwhash_str_needs_rehash')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_str_needs_rehash()
     * @param string $hash
     * @param int $opslimit
     * @param int $memlimit
     * @return bool
     *
     * @throws SodiumException
     */
    function sodium_crypto_pwhash_str_needs_rehash($hash, $opslimit, $memlimit)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_str_needs_rehash($hash, $opslimit, $memlimit);
    }
}
if (!is_callable('sodium_crypto_pwhash_str_verify')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_str_verify()
     * @param string $passwd
     * @param string $hash
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash_str_verify($passwd, $hash)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_str_verify($passwd, $hash);
    }
}
if (!is_callable('sodium_crypto_pwhash_scryptsalsa208sha256')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256()
     * @param int $length
     * @param string $passwd
     * @param string $salt
     * @param int $opslimit
     * @param int $memlimit
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash_scryptsalsa208sha256($length, $passwd, $salt, $opslimit, $memlimit)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256(
            $length,
            $passwd,
            $salt,
            $opslimit,
            $memlimit
        );
    }
}
if (!is_callable('sodium_crypto_pwhash_scryptsalsa208sha256_str')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256_str()
     * @param string $passwd
     * @param int $opslimit
     * @param int $memlimit
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash_scryptsalsa208sha256_str($passwd, $opslimit, $memlimit)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256_str($passwd, $opslimit, $memlimit);
    }
}
if (!is_callable('sodium_crypto_pwhash_scryptsalsa208sha256_str_verify')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256_str_verify()
     * @param string $passwd
     * @param string $hash
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_pwhash_scryptsalsa208sha256_str_verify($passwd, $hash)
    {
        return ParagonIE_Sodium_Compat::crypto_pwhash_scryptsalsa208sha256_str_verify($passwd, $hash);
    }
}
if (!is_callable('sodium_crypto_scalarmult')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_scalarmult()
     * @param string $n
     * @param string $p
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_scalarmult($n, $p)
    {
        return ParagonIE_Sodium_Compat::crypto_scalarmult($n, $p);
    }
}
if (!is_callable('sodium_crypto_scalarmult_base')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_scalarmult_base()
     * @param string $n
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_scalarmult_base($n)
    {
        return ParagonIE_Sodium_Compat::crypto_scalarmult_base($n);
    }
}
if (!is_callable('sodium_crypto_secretbox')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_secretbox()
     * @param string $message
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_secretbox($message, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_secretbox($message, $nonce, $key);
    }
}
if (!is_callable('sodium_crypto_secretbox_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_secretbox_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_secretbox_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_secretbox_keygen();
    }
}
if (!is_callable('sodium_crypto_secretbox_open')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_secretbox_open()
     * @param string $ciphertext
     * @param string $nonce
     * @param string $key
     * @return string|bool
     */
    function sodium_crypto_secretbox_open($ciphertext, $nonce, $key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_secretbox_open($ciphertext, $nonce, $key);
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_init_push')) {
    /**
     * @param string $key
     * @return array<int, string>
     * @throws SodiumException
     */
    function sodium_crypto_secretstream_xchacha20poly1305_init_push($key)
    {
        return ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_init_push($key);
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_push')) {
    /**
     * @param string $state
     * @param string $message
     * @param string $additional_data
     * @param int $tag
     * @return string
     * @throws SodiumException
     */
    function sodium_crypto_secretstream_xchacha20poly1305_push(
        &$state,
        $message,
        $additional_data = '',
        $tag = 0
    ) {
        return ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_push(
            $state,
            $message,
            $additional_data,
            $tag
        );
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_init_pull')) {
    /**
     * @param string $header
     * @param string $key
     * @return string
     * @throws Exception
     */
    function sodium_crypto_secretstream_xchacha20poly1305_init_pull($header, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_init_pull($header, $key);
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_pull')) {
    /**
     * @param string $state
     * @param string $ciphertext
     * @param string $additional_data
     * @return bool|array{0: string, 1: int}
     * @throws SodiumException
     */
    function sodium_crypto_secretstream_xchacha20poly1305_pull(&$state, $ciphertext, $additional_data = '')
    {
        return ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_pull(
            $state,
            $ciphertext,
            $additional_data
        );
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_rekey')) {
    /**
     * @param string $state
     * @return void
     * @throws SodiumException
     */
    function sodium_crypto_secretstream_xchacha20poly1305_rekey(&$state)
    {
        ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_rekey($state);
    }
}
if (!is_callable('sodium_crypto_secretstream_xchacha20poly1305_keygen')) {
    /**
     * @return string
     * @throws Exception
     */
    function sodium_crypto_secretstream_xchacha20poly1305_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_secretstream_xchacha20poly1305_keygen();
    }
}
if (!is_callable('sodium_crypto_shorthash')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_shorthash()
     * @param string $message
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_shorthash($message, $key = '')
    {
        return ParagonIE_Sodium_Compat::crypto_shorthash($message, $key);
    }
}
if (!is_callable('sodium_crypto_shorthash_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_shorthash_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_shorthash_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_shorthash_keygen();
    }
}
if (!is_callable('sodium_crypto_sign')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign()
     * @param string $message
     * @param string $secret_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign($message, $secret_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign($message, $secret_key);
    }
}
if (!is_callable('sodium_crypto_sign_detached')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_detached()
     * @param string $message
     * @param string $secret_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_detached($message, $secret_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_detached($message, $secret_key);
    }
}
if (!is_callable('sodium_crypto_sign_keypair_from_secretkey_and_publickey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_keypair_from_secretkey_and_publickey()
     * @param string $secret_key
     * @param string $public_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_keypair_from_secretkey_and_publickey($secret_key, $public_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_keypair_from_secretkey_and_publickey($secret_key, $public_key);
    }
}
if (!is_callable('sodium_crypto_sign_keypair')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_keypair()
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_keypair()
    {
        return ParagonIE_Sodium_Compat::crypto_sign_keypair();
    }
}
if (!is_callable('sodium_crypto_sign_open')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_open()
     * @param string $signedMessage
     * @param string $public_key
     * @return string|bool
     */
    function sodium_crypto_sign_open($signedMessage, $public_key)
    {
        try {
            return ParagonIE_Sodium_Compat::crypto_sign_open($signedMessage, $public_key);
        } catch (Error $ex) {
            return false;
        } catch (Exception $ex) {
            return false;
        }
    }
}
if (!is_callable('sodium_crypto_sign_publickey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_publickey()
     * @param string $key_pair
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_publickey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_publickey($key_pair);
    }
}
if (!is_callable('sodium_crypto_sign_publickey_from_secretkey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_publickey_from_secretkey()
     * @param string $secret_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_publickey_from_secretkey($secret_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_publickey_from_secretkey($secret_key);
    }
}
if (!is_callable('sodium_crypto_sign_secretkey')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_secretkey()
     * @param string $key_pair
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_secretkey($key_pair)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_secretkey($key_pair);
    }
}
if (!is_callable('sodium_crypto_sign_seed_keypair')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_seed_keypair()
     * @param string $seed
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_seed_keypair($seed)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_seed_keypair($seed);
    }
}
if (!is_callable('sodium_crypto_sign_verify_detached')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_verify_detached()
     * @param string $signature
     * @param string $message
     * @param string $public_key
     * @return bool
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_verify_detached($signature, $message, $public_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_verify_detached($signature, $message, $public_key);
    }
}
if (!is_callable('sodium_crypto_sign_ed25519_pk_to_curve25519')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_ed25519_pk_to_curve25519()
     * @param string $public_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_ed25519_pk_to_curve25519($public_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_ed25519_pk_to_curve25519($public_key);
    }
}
if (!is_callable('sodium_crypto_sign_ed25519_sk_to_curve25519')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_sign_ed25519_sk_to_curve25519()
     * @param string $secret_key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_sign_ed25519_sk_to_curve25519($secret_key)
    {
        return ParagonIE_Sodium_Compat::crypto_sign_ed25519_sk_to_curve25519($secret_key);
    }
}
if (!is_callable('sodium_crypto_stream')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_stream()
     * @param int $length
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_stream($length, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_stream($length, $nonce, $key);
    }
}
if (!is_callable('sodium_crypto_stream_keygen')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_stream_keygen()
     * @return string
     * @throws Exception
     */
    function sodium_crypto_stream_keygen()
    {
        return ParagonIE_Sodium_Compat::crypto_stream_keygen();
    }
}
if (!is_callable('sodium_crypto_stream_xor')) {
    /**
     * @see ParagonIE_Sodium_Compat::crypto_stream_xor()
     * @param string $message
     * @param string $nonce
     * @param string $key
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_crypto_stream_xor($message, $nonce, $key)
    {
        return ParagonIE_Sodium_Compat::crypto_stream_xor($message, $nonce, $key);
    }
}
require_once dirname(__FILE__) . '/stream-xchacha20.php';
if (!is_callable('sodium_hex2bin')) {
    /**
     * @see ParagonIE_Sodium_Compat::hex2bin()
     * @param string $string
     * @param string $ignore
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_hex2bin($string, $ignore = '')
    {
        return ParagonIE_Sodium_Compat::hex2bin($string, $ignore);
    }
}
if (!is_callable('sodium_increment')) {
    /**
     * @see ParagonIE_Sodium_Compat::increment()
     * @param string $string
     * @return void
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_increment(&$string)
    {
        ParagonIE_Sodium_Compat::increment($string);
    }
}
if (!is_callable('sodium_library_version_major')) {
    /**
     * @see ParagonIE_Sodium_Compat::library_version_major()
     * @return int
     */
    function sodium_library_version_major()
    {
        return ParagonIE_Sodium_Compat::library_version_major();
    }
}
if (!is_callable('sodium_library_version_minor')) {
    /**
     * @see ParagonIE_Sodium_Compat::library_version_minor()
     * @return int
     */
    function sodium_library_version_minor()
    {
        return ParagonIE_Sodium_Compat::library_version_minor();
    }
}
if (!is_callable('sodium_version_string')) {
    /**
     * @see ParagonIE_Sodium_Compat::version_string()
     * @return string
     */
    function sodium_version_string()
    {
        return ParagonIE_Sodium_Compat::version_string();
    }
}
if (!is_callable('sodium_memcmp')) {
    /**
     * @see ParagonIE_Sodium_Compat::memcmp()
     * @param string $string1
     * @param string $string2
     * @return int
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_memcmp($string1, $string2)
    {
        return ParagonIE_Sodium_Compat::memcmp($string1, $string2);
    }
}
if (!is_callable('sodium_memzero')) {
    /**
     * @see ParagonIE_Sodium_Compat::memzero()
     * @param string $string
     * @return void
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_memzero(&$string)
    {
        ParagonIE_Sodium_Compat::memzero($string);
    }
}
if (!is_callable('sodium_pad')) {
    /**
     * @see ParagonIE_Sodium_Compat::pad()
     * @param string $unpadded
     * @param int $block_size
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_pad($unpadded, $block_size)
    {
        return ParagonIE_Sodium_Compat::pad($unpadded, $block_size, true);
    }
}
if (!is_callable('sodium_unpad')) {
    /**
     * @see ParagonIE_Sodium_Compat::pad()
     * @param string $padded
     * @param int $block_size
     * @return string
     * @throws SodiumException
     * @throws TypeError
     */
    function sodium_unpad($padded, $block_size)
    {
        return ParagonIE_Sodium_Compat::unpad($padded, $block_size, true);
    }
}
if (!is_callable('sodium_randombytes_buf')) {
    /**
     * @see ParagonIE_Sodium_Compat::randombytes_buf()
     * @param int $amount
     * @return string
     * @throws Exception
     */
    function sodium_randombytes_buf($amount)
    {
        return ParagonIE_Sodium_Compat::randombytes_buf($amount);
    }
}

if (!is_callable('sodium_randombytes_uniform')) {
    /**
     * @see ParagonIE_Sodium_Compat::randombytes_uniform()
     * @param int $upperLimit
     * @return int
     * @throws Exception
     */
    function sodium_randombytes_uniform($upperLimit)
    {
        return ParagonIE_Sodium_Compat::randombytes_uniform($upperLimit);
    }
}

if (!is_callable('sodium_randombytes_random16')) {
    /**
     * @see ParagonIE_Sodium_Compat::randombytes_random16()
     * @return int
     * @throws Exception
     */
    function sodium_randombytes_random16()
    {
        return ParagonIE_Sodium_Compat::randombytes_random16();
    }
}