- UID
- 2261
注册时间2005-7-5
阅读权限20
最后登录1970-1-1
以武会友
TA的每日心情 | 开心 2019-9-19 16:05 |
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签到天数: 4 天 [LV.2]偶尔看看I
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当时见到一张帖子即兴写了这段代码,还没认真调试过
- program Project1;
- {$APPTYPE CONSOLE}
- uses
- SysUtils;
- const
- Key='TESTNET';
- Cryptograph='有些事还是不知为妙';
- //不能为0.5,相加为1
- Percent1=0.21;
- Percent2=0.79;
- var
- s1:string;
- function GetKey(aKey:string;aPercent:Double):string;
- var
- i:integer;
- begin
- SetLength(Result,Length(aKey));
- for i:=1 to Length(aKey) do
- begin
- Result[i]:=Chr(Round(Ord(aKey[i])*aPercent));
- end;
- end;
- function EnCode(aCryptograph,aKey:string):string;
- var
- i,keylen,codelen:integer;
- begin
- keylen:=Length(akey);
- codelen:=Length(aCryptograph);
- SetLength(Result, Length(aCryptograph));
- for i:=1 to codelen do
- begin
- Result[i]:=Chr(Ord(aCryptograph[i])+Ord(aKey[(i mod KeyLen)+1]));
- end;
- end;
- function DeCode(aCryptograph,aKey:string):string;
- var
- i,keylen,codelen:integer;
- begin
- keylen:=Length(akey);
- codelen:=Length(aCryptograph);
- SetLength(Result, Length(aCryptograph));
- for i:=1 to codelen do
- begin
- Result[i]:=Chr(Ord(aCryptograph[i])-Ord(aKey[(i mod KeyLen)+1]));
- end;
- end;
- begin
- { TODO -oUser -cConsole Main : Insert code here }
- WriteLn('要加密的文字');
- WriteLn(Cryptograph);
- WriteLn;
- WriteLn('密码经过第一个网络');
- s1:=EnCode(Cryptograph,GetKey(Key,Percent1));
- WriteLn(s1);
- WriteLn;
- WriteLn('密码经过第二个网络');
- s1:=EnCode(s1,GetKey(Key,Percent2));
- WriteLn(s1);
- WriteLn;
- WriteLn('还原');
- s1:=DeCode(s1,Key);
- WriteLn(s1);
- WriteLn;
- WriteLn('如果要在VCL控件中显示,还要对#0进行处理,'+
- '因为VCL中大部分函数以#0作为结束标记');
- ReadLn;
- end.
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