首先有兩個(gè)自定的轉(zhuǎn)換函數(shù)： function myStrToHex(s:string):string; //字串轉(zhuǎn)16進(jìn)制 var TmpStr:string; i:integer; begin TmpStr:=''; for i:=1 to Length(s)do TmpStr:=TmpStr+IntToHex(ord(s[i]),2); Result:=TmpStr; end; function myHexToStr(S:string):string; //16進(jìn)制轉(zhuǎn)字串 var HexS,TmpStr:string; i:Integer; a:Byte; begin HexS:=s; if Length(HexS) mod 2=1 then HexS:=HexS+'0'; TmpStr:=''; for i:=1 to(Length(HexS)div 2)do begin a:=StrToInt('$'+HexS[2*i-1]+HexS[2*i]); TmpStr:=TmpStr+Chr(a); end; Result:=TmpStr; end; function myStrToHex(s:string):string; //字串轉(zhuǎn)16進(jìn)制 var TmpStr:string; i:integer; begin TmpStr:=''; for i:=1 to Length(s)do TmpStr:=TmpStr+IntToHex(ord(s[i]),2); Result:=TmpStr; end; function myHexToStr(S:string):string; //16進(jìn)制轉(zhuǎn)字串 var HexS,TmpStr:string; i:Integer; a:Byte; begin HexS:=s; if Length(HexS) mod 2=1 then HexS:=HexS+'0'; TmpStr:=''; for i:=1 to(Length(HexS)div 2)do begin a:=StrToInt('$'+HexS[2*i-1]+HexS[2*i]); TmpStr:=TmpStr+Chr(a); end; Result:=TmpStr; end; 然后就是加密、解密函數(shù)了： {兩個(gè)函數(shù)的參數(shù)相同，s為要加密、解密的字串；sKey為密匙} function EncryptStr(const s:string;sKey:string):string; //加密 var i,j:Integer; HexS,HexsKey,MidS,TmpStr:string; a,b,c:byte; begin HexS:=myStrToHex(s); HexsKey:=myStrToHex(sKey); MidS:=HexS; for i:=1 to(Length(HexsKey)div 2)do begin if i<>1 then MidS:=TmpStr; TmpStr:=''; //下面要用到TmpStr，所以要清空 for j:=1 to (Length(MidS)div 2)do begin a:=StrToInt('$'+midS[2*j-1]+midS[2*j]); b:=StrToInt('$'+HexsKey[2*i-1]+HexsKey[2*i]); c:=a xor b; tmpstr:=TmpStr+myStrToHex(Chr(c)); end; end; Result:=TmpStr; end; function DecryptStr(const s:string;sKey:string):string; //解密 var i,j:Integer; HexS,HexsKey,MidS,TmpStr:string; a,b,c:Byte; begin HexS:=s; if Length(HexS)mod 2=1 then //檢查是否為字符串 begin ShowMessage('密文錯(cuò)誤！'); Exit; end; HexsKey:=myStrToHex(sKey); TmpStr:=HexS; MidS:=HexS; for i:=(length(HexsKey) div 2) downto 1 do begin if i<>(length(HexsKey) div 2)then MidS:=TmpStr; TmpStr:=''; //下面要用到TmpStr，所以要清空 for j:=1 to(length(MidS) div 2)do begin a:=StrToInt('$'+MidS[2*j-1]+MidS[2*j]); b:=StrToInt('$'+HexsKey[2*i-1]+HexsKey[2*i]); c:=a xor b; TmpStr := TmpStr+myStrToHex(Chr(c)); end; end; Result:=myHexToStr(TmpStr); end; {兩個(gè)函數(shù)的參數(shù)相同，s為要加密、解密的字串；sKey為密匙} function EncryptStr(const s:string;sKey:string):string; //加密 var i,j:Integer; HexS,HexsKey,MidS,TmpStr:string; a,b,c:byte; begin HexS:=myStrToHex(s); HexsKey:=myStrToHex(sKey); MidS:=HexS; for i:=1 to(Length(HexsKey)div 2)do begin if i<>1 then MidS:=TmpStr; TmpStr:=''; //下面要用到TmpStr，所以要清空 for j:=1 to (Length(MidS)div 2)do begin a:=StrToInt('$'+midS[2*j-1]+midS[2*j]); b:=StrToInt('$'+HexsKey[2*i-1]+HexsKey[2*i]); c:=a xor b; tmpstr:=TmpStr+myStrToHex(Chr(c)); end; end; Result:=TmpStr; end; function DecryptStr(const s:string;sKey:string):string; //解密 var i,j:Integer; HexS,HexsKey,MidS,TmpStr:string; a,b,c:Byte; begin HexS:=s; if Length(HexS)mod 2=1 then //檢查是否為字符串 begin ShowMessage('密文錯(cuò)誤！'); Exit; end; HexsKey:=myStrToHex(sKey); TmpStr:=HexS; MidS:=HexS; for i:=(length(HexsKey) div 2) downto 1 do begin if i<>(length(HexsKey) div 2)then MidS:=TmpStr; TmpStr:=''; //下面要用到TmpStr，所以要清空 for j:=1 to(length(MidS) div 2)do begin a:=StrToInt('$'+MidS[2*j-1]+MidS[2*j]); b:=StrToInt('$'+HexsKey[2*i-1]+HexsKey[2*i]); c:=a xor b; TmpStr := TmpStr+myStrToHex(Chr(c)); end; end; Result:=myHexToStr(TmpStr); end; 現(xiàn)在已經(jīng)可以使用了，調(diào)用EncryptStr和DecryptStr分別加密、解密 例： [delphi] view plaincopyprint?Edit1.Text:=EncryptStr('Hello','delphi'); Edit1.Text:=DecryptStr(Edit1.Text,'delphi'); Edit1.Text:=EncryptStr('Hello','delphi'); Edit1.Text:=DecryptStr(Edit1.Text,'delphi');

　　

轉(zhuǎn)載于:https://www.cnblogs.com/qingsong/p/4033027.html

總結(jié)

以上是生活随笔為你收集整理的DELPHI加密字串（异或运算加密）的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。