ParagonIE_Sodium_Compat::is_zero( string $str ): bool

Parameters

$strstring

Return

bool

Uses · 1

• ParagonIE_Sodium_Core_Util::chrToInt()Cache-timing-safe variant of ord()

Used by · 3

• ParagonIE_Sodium_Core_Ed25519::scalar_random()
• ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255()
• ParagonIE_Sodium_Core_Ristretto255::scalarmult_ristretto255_base()

Source

View on Trac ↗View on GitHub ↗

3747    public static function is_zero(3748        #[\SensitiveParameter]3749        $str3750    ) {3751        $d = 0;3752        for ($i = 0; $i < 32; ++$i) {3753            $d |= ParagonIE_Sodium_Core_Util::chrToInt($str[$i]);3754        }3755        return ((($d - 1) >> 31) & 1) === 1;3756    }

History

Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.0.4 tag, from src/wp-includes/sodium_compat/src/Compat.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.