ParagonIE_Sodium_Core32_BLAKE2b::increment_counter() public WP 1.0

{} It's a method of the class: ParagonIE_Sodium_Core32_BLAKE2b{}

No Hooks.

Return

null. Null. Nothing.

Usage

$result = ParagonIE_Sodium_Core32_BLAKE2b::increment_counter( $ctx, $inc );

$ctx(SplFixedarray) (required)

-

$inc(int) (required)

-

Code of ParagonIE_Sodium_Core32_BLAKE2b::increment_counter() ParagonIE Sodium Core32 BLAKE2b::increment counter ^{WP 5.7}

<?php
public static function increment_counter($ctx, $inc)
{
    if ($inc < 0) {
        throw new SodiumException('Increasing by a negative number makes no sense.');
    }
    $t = self::to64($inc);
    # S->t is $ctx[1] in our implementation

    # S->t[0] = ( uint64_t )( t >> 0 );
    $ctx[1][0] = self::add64($ctx[1][0], $t);

    # S->t[1] += ( S->t[0] < inc );
    if (!($ctx[1][0] instanceof ParagonIE_Sodium_Core32_Int64)) {
        throw new TypeError('Not an int64');
    }
    /** @var ParagonIE_Sodium_Core32_Int64 $c*/
    $c = $ctx[1][0];
    if ($c->isLessThanInt($inc)) {
        $ctx[1][1] = self::add64($ctx[1][1], self::to64(1));
    }
}