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-rw-r--r--vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php95
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diff --git a/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php b/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php
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+++ b/vendor/paragonie/constant_time_encoding/src/Base64UrlSafe.php
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+<?php
+declare(strict_types=1);
+namespace ParagonIE\ConstantTime;
+
+/**
+ * Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
+ * Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/**
+ * Class Base64UrlSafe
+ * [A-Z][a-z][0-9]\-_
+ *
+ * @package ParagonIE\ConstantTime
+ */
+abstract class Base64UrlSafe extends Base64
+{
+
+ /**
+ * Uses bitwise operators instead of table-lookups to turn 6-bit integers
+ * into 8-bit integers.
+ *
+ * Base64 character set:
+ * [A-Z] [a-z] [0-9] - _
+ * 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2d, 0x5f
+ *
+ * @param int $src
+ * @return int
+ */
+ protected static function decode6Bits(int $src): int
+ {
+ $ret = -1;
+
+ // if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
+ $ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
+
+ // if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
+ $ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
+
+ // if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
+ $ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
+
+ // if ($src == 0x2c) $ret += 62 + 1;
+ $ret += (((0x2c - $src) & ($src - 0x2e)) >> 8) & 63;
+
+ // if ($src == 0x5f) ret += 63 + 1;
+ $ret += (((0x5e - $src) & ($src - 0x60)) >> 8) & 64;
+
+ return $ret;
+ }
+
+ /**
+ * Uses bitwise operators instead of table-lookups to turn 8-bit integers
+ * into 6-bit integers.
+ *
+ * @param int $src
+ * @return string
+ */
+ protected static function encode6Bits(int $src): string
+ {
+ $diff = 0x41;
+
+ // if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
+ $diff += ((25 - $src) >> 8) & 6;
+
+ // if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
+ $diff -= ((51 - $src) >> 8) & 75;
+
+ // if ($src > 61) $diff += 0x2d - 0x30 - 10; // -13
+ $diff -= ((61 - $src) >> 8) & 13;
+
+ // if ($src > 62) $diff += 0x5f - 0x2b - 1; // 3
+ $diff += ((62 - $src) >> 8) & 49;
+
+ return \pack('C', $src + $diff);
+ }
+}