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93 lines
3.6 KiB
93 lines
3.6 KiB
1 year ago
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#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
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#pragma warning disable
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using System;
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/*
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* $Id: Adler32.cs,v 1.1 2006-07-31 13:59:25 bouncy Exp $
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*
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Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This program is based on zlib-1.1.3, so all credit should go authors
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* Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
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* and contributors of zlib.
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*/
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namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Zlib {
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internal sealed class Adler32{
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// largest prime smaller than 65536
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private const int BASE=65521;
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// NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1
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private const int NMAX=5552;
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internal long adler32(long adler, byte[] buf, int index, int len){
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if(buf == null){ return 1L; }
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long s1=adler&0xffff;
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long s2=(adler>>16)&0xffff;
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int k;
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while(len > 0) {
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k=len<NMAX?len:NMAX;
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len-=k;
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while(k>=16){
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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s1+=buf[index++]&0xff; s2+=s1;
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k-=16;
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}
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if(k!=0){
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do{
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s1+=buf[index++]&0xff; s2+=s1;
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}
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while(--k!=0);
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}
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s1%=BASE;
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s2%=BASE;
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}
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return (s2<<16)|s1;
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}
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}
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}
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#pragma warning restore
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#endif
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