ParagonIE_Sodium_Compat::crypto_box_secretkey

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Summery Summery

Extract the secret key from a crypto_box keypair.

Syntax Syntax

ParagonIE_Sodium_Compat::crypto_box_secretkey( string $keypair )

Parameters Parameters

$keypair

(string) (Required)

Return Return

(string) Your crypto_box secret key

Source Source

File: wp-includes/sodium_compat/src/Compat.php

    public static function crypto_box_secretkey($keypair)
    {
        /* Type checks: */
        ParagonIE_Sodium_Core_Util::declareScalarType($keypair, 'string', 1);

        /* Input validation: */
        if (ParagonIE_Sodium_Core_Util::strlen($keypair) !== self::CRYPTO_BOX_KEYPAIRBYTES) {
            throw new SodiumException('Argument 1 must be CRYPTO_BOX_KEYPAIRBYTES long.');
        }

        if (self::useNewSodiumAPI()) {
            return (string) sodium_crypto_box_secretkey($keypair);
        }
        if (self::use_fallback('crypto_box_secretkey')) {
            return (string) call_user_func('\\Sodium\\crypto_box_secretkey', $keypair);
        }
        if (PHP_INT_SIZE === 4) {
            return ParagonIE_Sodium_Crypto32::box_secretkey($keypair);
        }
        return ParagonIE_Sodium_Crypto::box_secretkey($keypair);
    }

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