ParagonIE_Sodium_Core32_Poly1305_State::update( string $message = '' ): self

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$messagestringoptional

Default: ''

Return value

self

Performance profile

How much work a call to ParagonIE_Sodium_Core32_Poly1305_State::update() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Heavy

Reaches the database via ParagonIE_Sodium_Core32_Poly1305_State::update().

Scaling

Scales with input

The body loops, so the work grows with what you pass in.

Instructions

13–92

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 118.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

• sqldatabase queryParagonIE_Sodium_Core32_Poly1305_State::update()this function does it

What one call costs · 6 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost ParagonIE_Sodium_Core32_Poly1305_State::update() can have, taken from its control-flow graph on PHP 8.5.

Uses · 5

• ParagonIE_Sodium_Core32_Poly1305_State::strlen()
• ParagonIE_Sodium_Core32_Poly1305_State::chrToInt()
• ParagonIE_Sodium_Core32_Poly1305_State::substr()
• ParagonIE_Sodium_Core32_Poly1305_State::blocks()
• ParagonIE_Sodium_Core32_Poly1305_State::intArrayToString()

Source code

View on Trac ↗View on GitHub ↗

120    public function update($message = '')121    {122        $bytes = self::strlen($message);123 124        /* handle leftover */125        if ($this->leftover) {126            /** @var int $want */127            $want = ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE - $this->leftover;128            if ($want > $bytes) {129                $want = $bytes;130            }131            for ($i = 0; $i < $want; ++$i) {132                $mi = self::chrToInt($message[$i]);133                $this->buffer[$this->leftover + $i] = $mi;134            }135            // We snip off the leftmost bytes.136            $message = self::substr($message, $want);137            $bytes = self::strlen($message);138            $this->leftover += $want;139            if ($this->leftover < ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE) {140                // We still don't have enough to run $this->blocks()141                return $this;142            }143 144            $this->blocks(145                self::intArrayToString($this->buffer),146                ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE147            );148            $this->leftover = 0;149        }150 151        /* process full blocks */152        if ($bytes >= ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE) {153            /** @var int $want */154            $want = $bytes & ~(ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE - 1);155            if ($want >= ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE) {156                /** @var string $block */157                $block = self::substr($message, 0, $want);158                if (self::strlen($block) >= ParagonIE_Sodium_Core32_Poly1305::BLOCK_SIZE) {159                    $this->blocks($block, $want);160                    $message = self::substr($message, $want);161                    $bytes = self::strlen($message);162                }163            }164        }165 166        /* store leftover */167        if ($bytes) {168            for ($i = 0; $i < $bytes; ++$i) {169                $mi = self::chrToInt($message[$i]);170                $this->buffer[$this->leftover + $i] = $mi;171            }172            $this->leftover = (int) $this->leftover + $bytes;173        }174        return $this;175    }

Changelog

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 7.1.0 tag, from src/wp-includes/sodium_compat/src/Core32/Poly1305/State.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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