ParagonIE_Sodium_File::onetimeauth_verify_core32

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Summery Summery

One-time message authentication for 32-bit systems

Syntax Syntax

ParagonIE_Sodium_File::onetimeauth_verify_core32( ParagonIE_Sodium_Core32_Poly1305_State $state, resource $ifp, string $tag = '', int $mlen )

Parameters Parameters

$state

(ParagonIE_Sodium_Core32_Poly1305_State) (Required)

$ifp

(resource) (Required)

$tag

(string) (Optional)

Default value: ''

$mlen

(int) (Required)

Return Return

(bool)

Source Source

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

    protected static function onetimeauth_verify_core32(
        ParagonIE_Sodium_Core32_Poly1305_State $state,
        $ifp,
        $tag = '',
        $mlen = 0
    ) {
        /** @var int $pos */
        $pos = self::ftell($ifp);

        /** @var int $iter */
        $iter = 1;

        /** @var int $incr */
        $incr = self::BUFFER_SIZE >> 6;

        while ($mlen > 0) {
            $blockSize = $mlen > self::BUFFER_SIZE
                ? self::BUFFER_SIZE
                : $mlen;
            $ciphertext = fread($ifp, $blockSize);
            if (!is_string($ciphertext)) {
                throw new SodiumException('Could not read input file');
            }
            $state->update($ciphertext);
            $mlen -= $blockSize;
            $iter += $incr;
        }
        $res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish());

        fseek($ifp, $pos, SEEK_SET);
        return $res;
    }

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