ParagonIE_Sodium_Core_ChaCha20::encryptBytes( ParagonIE_Sodium_Core_ChaCha20_Ctx $ctx, string $message = '' ): string

79    public static function encryptBytes(80        ParagonIE_Sodium_Core_ChaCha20_Ctx $ctx,81        $message = ''82    ) {83        $bytes = self::strlen($message);84 85        /*86        j0 = ctx->input[0];87        j1 = ctx->input[1];88        j2 = ctx->input[2];89        j3 = ctx->input[3];90        j4 = ctx->input[4];91        j5 = ctx->input[5];92        j6 = ctx->input[6];93        j7 = ctx->input[7];94        j8 = ctx->input[8];95        j9 = ctx->input[9];96        j10 = ctx->input[10];97        j11 = ctx->input[11];98        j12 = ctx->input[12];99        j13 = ctx->input[13];100        j14 = ctx->input[14];101        j15 = ctx->input[15];102        */103        $j0  = (int) $ctx[0];104        $j1  = (int) $ctx[1];105        $j2  = (int) $ctx[2];106        $j3  = (int) $ctx[3];107        $j4  = (int) $ctx[4];108        $j5  = (int) $ctx[5];109        $j6  = (int) $ctx[6];110        $j7  = (int) $ctx[7];111        $j8  = (int) $ctx[8];112        $j9  = (int) $ctx[9];113        $j10 = (int) $ctx[10];114        $j11 = (int) $ctx[11];115        $j12 = (int) $ctx[12];116        $j13 = (int) $ctx[13];117        $j14 = (int) $ctx[14];118        $j15 = (int) $ctx[15];119 120        $c = '';121        for (;;) {122            if ($bytes < 64) {123                $message .= str_repeat("\x00", 64 - $bytes);124            }125 126            $x0 =  (int) $j0;127            $x1 =  (int) $j1;128            $x2 =  (int) $j2;129            $x3 =  (int) $j3;130            $x4 =  (int) $j4;131            $x5 =  (int) $j5;132            $x6 =  (int) $j6;133            $x7 =  (int) $j7;134            $x8 =  (int) $j8;135            $x9 =  (int) $j9;136            $x10 = (int) $j10;137            $x11 = (int) $j11;138            $x12 = (int) $j12;139            $x13 = (int) $j13;140            $x14 = (int) $j14;141            $x15 = (int) $j15;142 143            # for (i = 20; i > 0; i -= 2) {144            for ($i = 20; $i > 0; $i -= 2) {145                # QUARTERROUND( x0,  x4,  x8,  x12)146                list($x0, $x4, $x8, $x12) = self::quarterRound($x0, $x4, $x8, $x12);147 148                # QUARTERROUND( x1,  x5,  x9,  x13)149                list($x1, $x5, $x9, $x13) = self::quarterRound($x1, $x5, $x9, $x13);150 151                # QUARTERROUND( x2,  x6,  x10,  x14)152                list($x2, $x6, $x10, $x14) = self::quarterRound($x2, $x6, $x10, $x14);153 154                # QUARTERROUND( x3,  x7,  x11,  x15)155                list($x3, $x7, $x11, $x15) = self::quarterRound($x3, $x7, $x11, $x15);156 157                # QUARTERROUND( x0,  x5,  x10,  x15)158                list($x0, $x5, $x10, $x15) = self::quarterRound($x0, $x5, $x10, $x15);