--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/sodium_compat/src/Core32/X25519.php Mon Oct 14 18:28:13 2019 +0200
@@ -0,0 +1,344 @@
+<?php
+
+if (class_exists('ParagonIE_Sodium_Core32_X25519', false)) {
+ return;
+}
+
+/**
+ * Class ParagonIE_Sodium_Core32_X25519
+ */
+abstract class ParagonIE_Sodium_Core32_X25519 extends ParagonIE_Sodium_Core32_Curve25519
+{
+ /**
+ * Alters the objects passed to this method in place.
+ *
+ * @internal You should not use this directly from another application
+ *
+ * @param ParagonIE_Sodium_Core32_Curve25519_Fe $f
+ * @param ParagonIE_Sodium_Core32_Curve25519_Fe $g
+ * @param int $b
+ * @return void
+ * @throws SodiumException
+ * @throws TypeError
+ * @psalm-suppress MixedMethodCall
+ */
+ public static function fe_cswap(
+ ParagonIE_Sodium_Core32_Curve25519_Fe $f,
+ ParagonIE_Sodium_Core32_Curve25519_Fe $g,
+ $b = 0
+ ) {
+ $f0 = (int) $f[0]->toInt();
+ $f1 = (int) $f[1]->toInt();
+ $f2 = (int) $f[2]->toInt();
+ $f3 = (int) $f[3]->toInt();
+ $f4 = (int) $f[4]->toInt();
+ $f5 = (int) $f[5]->toInt();
+ $f6 = (int) $f[6]->toInt();
+ $f7 = (int) $f[7]->toInt();
+ $f8 = (int) $f[8]->toInt();
+ $f9 = (int) $f[9]->toInt();
+ $g0 = (int) $g[0]->toInt();
+ $g1 = (int) $g[1]->toInt();
+ $g2 = (int) $g[2]->toInt();
+ $g3 = (int) $g[3]->toInt();
+ $g4 = (int) $g[4]->toInt();
+ $g5 = (int) $g[5]->toInt();
+ $g6 = (int) $g[6]->toInt();
+ $g7 = (int) $g[7]->toInt();
+ $g8 = (int) $g[8]->toInt();
+ $g9 = (int) $g[9]->toInt();
+ $b = -$b;
+ /** @var int $x0 */
+ $x0 = ($f0 ^ $g0) & $b;
+ /** @var int $x1 */
+ $x1 = ($f1 ^ $g1) & $b;
+ /** @var int $x2 */
+ $x2 = ($f2 ^ $g2) & $b;
+ /** @var int $x3 */
+ $x3 = ($f3 ^ $g3) & $b;
+ /** @var int $x4 */
+ $x4 = ($f4 ^ $g4) & $b;
+ /** @var int $x5 */
+ $x5 = ($f5 ^ $g5) & $b;
+ /** @var int $x6 */
+ $x6 = ($f6 ^ $g6) & $b;
+ /** @var int $x7 */
+ $x7 = ($f7 ^ $g7) & $b;
+ /** @var int $x8 */
+ $x8 = ($f8 ^ $g8) & $b;
+ /** @var int $x9 */
+ $x9 = ($f9 ^ $g9) & $b;
+ $f[0] = ParagonIE_Sodium_Core32_Int32::fromInt($f0 ^ $x0);
+ $f[1] = ParagonIE_Sodium_Core32_Int32::fromInt($f1 ^ $x1);
+ $f[2] = ParagonIE_Sodium_Core32_Int32::fromInt($f2 ^ $x2);
+ $f[3] = ParagonIE_Sodium_Core32_Int32::fromInt($f3 ^ $x3);
+ $f[4] = ParagonIE_Sodium_Core32_Int32::fromInt($f4 ^ $x4);
+ $f[5] = ParagonIE_Sodium_Core32_Int32::fromInt($f5 ^ $x5);
+ $f[6] = ParagonIE_Sodium_Core32_Int32::fromInt($f6 ^ $x6);
+ $f[7] = ParagonIE_Sodium_Core32_Int32::fromInt($f7 ^ $x7);
+ $f[8] = ParagonIE_Sodium_Core32_Int32::fromInt($f8 ^ $x8);
+ $f[9] = ParagonIE_Sodium_Core32_Int32::fromInt($f9 ^ $x9);
+ $g[0] = ParagonIE_Sodium_Core32_Int32::fromInt($g0 ^ $x0);
+ $g[1] = ParagonIE_Sodium_Core32_Int32::fromInt($g1 ^ $x1);
+ $g[2] = ParagonIE_Sodium_Core32_Int32::fromInt($g2 ^ $x2);
+ $g[3] = ParagonIE_Sodium_Core32_Int32::fromInt($g3 ^ $x3);
+ $g[4] = ParagonIE_Sodium_Core32_Int32::fromInt($g4 ^ $x4);
+ $g[5] = ParagonIE_Sodium_Core32_Int32::fromInt($g5 ^ $x5);
+ $g[6] = ParagonIE_Sodium_Core32_Int32::fromInt($g6 ^ $x6);
+ $g[7] = ParagonIE_Sodium_Core32_Int32::fromInt($g7 ^ $x7);
+ $g[8] = ParagonIE_Sodium_Core32_Int32::fromInt($g8 ^ $x8);
+ $g[9] = ParagonIE_Sodium_Core32_Int32::fromInt($g9 ^ $x9);
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param ParagonIE_Sodium_Core32_Curve25519_Fe $f
+ * @return ParagonIE_Sodium_Core32_Curve25519_Fe
+ * @throws SodiumException
+ * @throws TypeError
+ * @psalm-suppress MixedAssignment
+ * @psalm-suppress MixedMethodCall
+ */
+ public static function fe_mul121666(ParagonIE_Sodium_Core32_Curve25519_Fe $f)
+ {
+ /** @var array<int, ParagonIE_Sodium_Core32_Int64> $h */
+ $h = array();
+ for ($i = 0; $i < 10; ++$i) {
+ $h[$i] = $f[$i]->toInt64()->mulInt(121666, 17);
+ }
+
+ $carry9 = $h[9]->addInt(1 << 24)->shiftRight(25);
+ $h[0] = $h[0]->addInt64($carry9->mulInt(19, 5));
+ $h[9] = $h[9]->subInt64($carry9->shiftLeft(25));
+
+ $carry1 = $h[1]->addInt(1 << 24)->shiftRight(25);
+ $h[2] = $h[2]->addInt64($carry1);
+ $h[1] = $h[1]->subInt64($carry1->shiftLeft(25));
+
+ $carry3 = $h[3]->addInt(1 << 24)->shiftRight(25);
+ $h[4] = $h[4]->addInt64($carry3);
+ $h[3] = $h[3]->subInt64($carry3->shiftLeft(25));
+
+ $carry5 = $h[5]->addInt(1 << 24)->shiftRight(25);
+ $h[6] = $h[6]->addInt64($carry5);
+ $h[5] = $h[5]->subInt64($carry5->shiftLeft(25));
+
+ $carry7 = $h[7]->addInt(1 << 24)->shiftRight(25);
+ $h[8] = $h[8]->addInt64($carry7);
+ $h[7] = $h[7]->subInt64($carry7->shiftLeft(25));
+
+ $carry0 = $h[0]->addInt(1 << 25)->shiftRight(26);
+ $h[1] = $h[1]->addInt64($carry0);
+ $h[0] = $h[0]->subInt64($carry0->shiftLeft(26));
+
+ $carry2 = $h[2]->addInt(1 << 25)->shiftRight(26);
+ $h[3] = $h[3]->addInt64($carry2);
+ $h[2] = $h[2]->subInt64($carry2->shiftLeft(26));
+
+ $carry4 = $h[4]->addInt(1 << 25)->shiftRight(26);
+ $h[5] = $h[5]->addInt64($carry4);
+ $h[4] = $h[4]->subInt64($carry4->shiftLeft(26));
+
+ $carry6 = $h[6]->addInt(1 << 25)->shiftRight(26);
+ $h[7] = $h[7]->addInt64($carry6);
+ $h[6] = $h[6]->subInt64($carry6->shiftLeft(26));
+
+ $carry8 = $h[8]->addInt(1 << 25)->shiftRight(26);
+ $h[9] = $h[9]->addInt64($carry8);
+ $h[8] = $h[8]->subInt64($carry8->shiftLeft(26));
+
+ for ($i = 0; $i < 10; ++$i) {
+ $h[$i] = $h[$i]->toInt32();
+ }
+ /** @var array<int, ParagonIE_Sodium_Core32_Int32> $h */
+ return ParagonIE_Sodium_Core32_Curve25519_Fe::fromArray($h);
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * Inline comments preceded by # are from libsodium's ref10 code.
+ *
+ * @param string $n
+ * @param string $p
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function crypto_scalarmult_curve25519_ref10($n, $p)
+ {
+ # for (i = 0;i < 32;++i) e[i] = n[i];
+ $e = '' . $n;
+ # e[0] &= 248;
+ $e[0] = self::intToChr(
+ self::chrToInt($e[0]) & 248
+ );
+ # e[31] &= 127;
+ # e[31] |= 64;
+ $e[31] = self::intToChr(
+ (self::chrToInt($e[31]) & 127) | 64
+ );
+ # fe_frombytes(x1,p);
+ $x1 = self::fe_frombytes($p);
+ # fe_1(x2);
+ $x2 = self::fe_1();
+ # fe_0(z2);
+ $z2 = self::fe_0();
+ # fe_copy(x3,x1);
+ $x3 = self::fe_copy($x1);
+ # fe_1(z3);
+ $z3 = self::fe_1();
+
+ # swap = 0;
+ /** @var int $swap */
+ $swap = 0;
+
+ # for (pos = 254;pos >= 0;--pos) {
+ for ($pos = 254; $pos >= 0; --$pos) {
+ # b = e[pos / 8] >> (pos & 7);
+ /** @var int $b */
+ $b = self::chrToInt(
+ $e[(int) floor($pos / 8)]
+ ) >> ($pos & 7);
+ # b &= 1;
+ $b &= 1;
+
+ # swap ^= b;
+ $swap ^= $b;
+
+ # fe_cswap(x2,x3,swap);
+ self::fe_cswap($x2, $x3, $swap);
+
+ # fe_cswap(z2,z3,swap);
+ self::fe_cswap($z2, $z3, $swap);
+
+ # swap = b;
+ /** @var int $swap */
+ $swap = $b;
+
+ # fe_sub(tmp0,x3,z3);
+ $tmp0 = self::fe_sub($x3, $z3);
+
+ # fe_sub(tmp1,x2,z2);
+ $tmp1 = self::fe_sub($x2, $z2);
+
+ # fe_add(x2,x2,z2);
+ $x2 = self::fe_add($x2, $z2);
+
+ # fe_add(z2,x3,z3);
+ $z2 = self::fe_add($x3, $z3);
+
+ # fe_mul(z3,tmp0,x2);
+ $z3 = self::fe_mul($tmp0, $x2);
+
+ # fe_mul(z2,z2,tmp1);
+ $z2 = self::fe_mul($z2, $tmp1);
+
+ # fe_sq(tmp0,tmp1);
+ $tmp0 = self::fe_sq($tmp1);
+
+ # fe_sq(tmp1,x2);
+ $tmp1 = self::fe_sq($x2);
+
+ # fe_add(x3,z3,z2);
+ $x3 = self::fe_add($z3, $z2);
+
+ # fe_sub(z2,z3,z2);
+ $z2 = self::fe_sub($z3, $z2);
+
+ # fe_mul(x2,tmp1,tmp0);
+ $x2 = self::fe_mul($tmp1, $tmp0);
+
+ # fe_sub(tmp1,tmp1,tmp0);
+ $tmp1 = self::fe_sub($tmp1, $tmp0);
+
+ # fe_sq(z2,z2);
+ $z2 = self::fe_sq($z2);
+
+ # fe_mul121666(z3,tmp1);
+ $z3 = self::fe_mul121666($tmp1);
+
+ # fe_sq(x3,x3);
+ $x3 = self::fe_sq($x3);
+
+ # fe_add(tmp0,tmp0,z3);
+ $tmp0 = self::fe_add($tmp0, $z3);
+
+ # fe_mul(z3,x1,z2);
+ $z3 = self::fe_mul($x1, $z2);
+
+ # fe_mul(z2,tmp1,tmp0);
+ $z2 = self::fe_mul($tmp1, $tmp0);
+ }
+
+ # fe_cswap(x2,x3,swap);
+ self::fe_cswap($x2, $x3, $swap);
+
+ # fe_cswap(z2,z3,swap);
+ self::fe_cswap($z2, $z3, $swap);
+
+ # fe_invert(z2,z2);
+ $z2 = self::fe_invert($z2);
+
+ # fe_mul(x2,x2,z2);
+ $x2 = self::fe_mul($x2, $z2);
+ # fe_tobytes(q,x2);
+ return (string) self::fe_tobytes($x2);
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param ParagonIE_Sodium_Core32_Curve25519_Fe $edwardsY
+ * @param ParagonIE_Sodium_Core32_Curve25519_Fe $edwardsZ
+ * @return ParagonIE_Sodium_Core32_Curve25519_Fe
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function edwards_to_montgomery(
+ ParagonIE_Sodium_Core32_Curve25519_Fe $edwardsY,
+ ParagonIE_Sodium_Core32_Curve25519_Fe $edwardsZ
+ ) {
+ $tempX = self::fe_add($edwardsZ, $edwardsY);
+ $tempZ = self::fe_sub($edwardsZ, $edwardsY);
+ $tempZ = self::fe_invert($tempZ);
+ return self::fe_mul($tempX, $tempZ);
+ }
+
+ /**
+ * @internal You should not use this directly from another application
+ *
+ * @param string $n
+ * @return string
+ * @throws SodiumException
+ * @throws TypeError
+ */
+ public static function crypto_scalarmult_curve25519_ref10_base($n)
+ {
+ # for (i = 0;i < 32;++i) e[i] = n[i];
+ $e = '' . $n;
+
+ # e[0] &= 248;
+ $e[0] = self::intToChr(
+ self::chrToInt($e[0]) & 248
+ );
+
+ # e[31] &= 127;
+ # e[31] |= 64;
+ $e[31] = self::intToChr(
+ (self::chrToInt($e[31]) & 127) | 64
+ );
+
+ $A = self::ge_scalarmult_base($e);
+ if (
+ !($A->Y instanceof ParagonIE_Sodium_Core32_Curve25519_Fe)
+ ||
+ !($A->Z instanceof ParagonIE_Sodium_Core32_Curve25519_Fe)
+ ) {
+ throw new TypeError('Null points encountered');
+ }
+ $pk = self::edwards_to_montgomery($A->Y, $A->Z);
+ return self::fe_tobytes($pk);
+ }
+}