ParagonIE_Sodium_File::onetimeauth_verify_core32( ParagonIE_Sodium_Core32_Poly1305_State $state, resource $ifp, string $tag = '', int $mlen = 0 ): bool

1546    protected static function onetimeauth_verify_core32(1547        ParagonIE_Sodium_Core32_Poly1305_State $state,1548        $ifp,1549        $tag = '',1550        $mlen = 01551    ) {1552        /** @var int $pos */1553        $pos = self::ftell($ifp);1554 1555        while ($mlen > 0) {1556            $blockSize = $mlen > self::BUFFER_SIZE1557                ? self::BUFFER_SIZE1558                : $mlen;1559            $ciphertext = fread($ifp, $blockSize);1560            if (!is_string($ciphertext)) {1561                throw new SodiumException('Could not read input file');1562            }1563            $state->update($ciphertext);1564            $mlen -= $blockSize;1565        }1566        $res = ParagonIE_Sodium_Core32_Util::verify_16($tag, $state->finish());1567 1568        fseek($ifp, $pos, SEEK_SET);1569        return $res;1570    }