ParagonIE_Sodium_Core32_Curve25519::fe_tobytes( ParagonIE_Sodium_Core32_Curve25519_Fe $h ): string

Parameters

$hParagonIE_Sodium_Core32_Curve25519_Fe

Return

string

Uses · 1

• ParagonIE_Sodium_Core32_Curve25519::intArrayToString()

Used by · 4

• ParagonIE_Sodium_Core32_Curve25519::fe_isnegative()Is a field element negative? (1 = yes, 0 = no. Used in calculations.)
• ParagonIE_Sodium_Core32_Curve25519::fe_isnonzero()Returns 0 if this field element results in all NUL bytes.
• ParagonIE_Sodium_Core32_Curve25519::ge_p3_tobytes()
• ParagonIE_Sodium_Core32_Curve25519::ge_tobytes()Convert a group element to a byte string.

Source

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263    public static function fe_tobytes(ParagonIE_Sodium_Core32_Curve25519_Fe $h)264    {265        /**266         * @var ParagonIE_Sodium_Core32_Int64[] $f267         * @var ParagonIE_Sodium_Core32_Int64 $q268         */269        $f = array();270 271        for ($i = 0; $i < 10; ++$i) {272            $f[$i] = $h[$i]->toInt64();273        }274 275        $q = $f[9]->mulInt(19, 5)->addInt(1 << 14)->shiftRight(25)276            ->addInt64($f[0])->shiftRight(26)277            ->addInt64($f[1])->shiftRight(25)278            ->addInt64($f[2])->shiftRight(26)279            ->addInt64($f[3])->shiftRight(25)280            ->addInt64($f[4])->shiftRight(26)281            ->addInt64($f[5])->shiftRight(25)282            ->addInt64($f[6])->shiftRight(26)283            ->addInt64($f[7])->shiftRight(25)284            ->addInt64($f[8])->shiftRight(26)285            ->addInt64($f[9])->shiftRight(25);286 287        $f[0] = $f[0]->addInt64($q->mulInt(19, 5));288 289        $carry0 = $f[0]->shiftRight(26);290        $f[1] = $f[1]->addInt64($carry0);291        $f[0] = $f[0]->subInt64($carry0->shiftLeft(26));292 293        $carry1 = $f[1]->shiftRight(25);294        $f[2] = $f[2]->addInt64($carry1);295        $f[1] = $f[1]->subInt64($carry1->shiftLeft(25));296 297        $carry2 = $f[2]->shiftRight(26);298        $f[3] = $f[3]->addInt64($carry2);299        $f[2] = $f[2]->subInt64($carry2->shiftLeft(26));300 301        $carry3 = $f[3]->shiftRight(25);302        $f[4] = $f[4]->addInt64($carry3);303        $f[3] = $f[3]->subInt64($carry3->shiftLeft(25));304 305        $carry4 = $f[4]->shiftRight(26);306        $f[5] = $f[5]->addInt64($carry4);307        $f[4] = $f[4]->subInt64($carry4->shiftLeft(26));308 309        $carry5 = $f[5]->shiftRight(25);310        $f[6] = $f[6]->addInt64($carry5);311        $f[5] = $f[5]->subInt64($carry5->shiftLeft(25));312 313        $carry6 = $f[6]->shiftRight(26);314        $f[7] = $f[7]->addInt64($carry6);315        $f[6] = $f[6]->subInt64($carry6->shiftLeft(26));316 317        $carry7 = $f[7]->shiftRight(25);318        $f[8] = $f[8]->addInt64($carry7);319        $f[7] = $f[7]->subInt64($carry7->shiftLeft(25));320 321        $carry8 = $f[8]->shiftRight(26);322        $f[9] = $f[9]->addInt64($carry8);323        $f[8] = $f[8]->subInt64($carry8->shiftLeft(26));324 325        $carry9 = $f[9]->shiftRight(25);326        $f[9] = $f[9]->subInt64($carry9->shiftLeft(25));327 328        $h0 = $f[0]->toInt32()->toInt();329        $h1 = $f[1]->toInt32()->toInt();330        $h2 = $f[2]->toInt32()->toInt();331        $h3 = $f[3]->toInt32()->toInt();332        $h4 = $f[4]->toInt32()->toInt();333        $h5 = $f[5]->toInt32()->toInt();334        $h6 = $f[6]->toInt32()->toInt();335        $h7 = $f[7]->toInt32()->toInt();336        $h8 = $f[8]->toInt32()->toInt();337        $h9 = $f[9]->toInt32()->toInt();338 339        /**340         * @var array<int, int>341         */342        $s = array(

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 6.7.7 tag, from src/wp-includes/sodium_compat/src/Core32/Curve25519.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

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