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unit deencrypt;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils;
// requires gpg
function encrypt(content, recipient: string): string;
function decrypt(content: string): string;
implementation
uses
Process, Math;
function encrypt(content, recipient: string): string;
var
p: tProcess;
s: string;
begin
result:='';
p:=tProcess.create(nil);
with p do begin
executable:='gpg';
parameters.add('-e');
parameters.add('-q');
parameters.add('--batch');
parameters.add('--no-tty');
parameters.add('-r');
parameters.add(recipient);
parameters.add('-o');
parameters.add('-');
parameters.add('-');
options:=options + [poUsePipes];
execute;
closeStderr;
end;
while p.running or (p.output.numBytesAvailable>0) do begin
if p.output.numBytesAvailable>0 then begin
setLength(s,p.output.numBytesAvailable);
setLength(s,p.output.read(s[1],length(s)));
result:=result+s;
continue;
end;
if content<>'' then begin
delete(content,1,p.input.write(content[1],min(128,length(content))));
if content='' then
p.closeInput;
continue;
end;
sleep(10);
end;
p.waitOnExit;
p.free;
content:=result;
result:='';
p:=tProcess.create(nil);
with p do begin
executable:='base64';
parameters.add('-w');
parameters.add('0');
options:=options + [poUsePipes];
execute;
closeStderr;
end;
while p.running or (p.output.numBytesAvailable>0) do begin
if p.output.numBytesAvailable>0 then begin
setLength(s,p.output.numBytesAvailable);
setLength(s,p.output.read(s[1],length(s)));
result:=result+s;
continue;
end;
if content<>'' then begin
delete(content,1,p.input.write(content[1],min(128,length(content))));
if content='' then
p.closeInput;
continue;
end;
sleep(10);
end;
p.waitOnExit;
p.free;
end;
function decrypt(content: string): string;
var
p: tProcess;
s: string;
begin
result:='';
p:=tProcess.create(nil);
with p do begin
executable:='base64';
parameters.add('-d');
options:=options + [poUsePipes];
execute;
closeStderr;
end;
while p.running or (p.output.numBytesAvailable>0) do begin
if p.output.numBytesAvailable>0 then begin
setLength(s,p.output.numBytesAvailable);
setLength(s,p.output.read(s[1],length(s)));
result:=result+s;
continue;
end;
if content<>'' then begin
delete(content,1,p.input.write(content[1],min(128,length(content))));
if content='' then
p.closeInput;
continue;
end;
sleep(10);
end;
p.waitOnExit;
p.free;
content:=result;
result:='';
p:=tProcess.create(nil);
with p do begin
executable:='gpg';
parameters.add('-d');
parameters.add('-q');
parameters.add('--batch');
parameters.add('--no-tty');
parameters.add('-o');
parameters.add('-');
parameters.add('-');
options:=options + [poUsePipes];
execute;
closeStderr;
end;
while p.running or (p.output.numBytesAvailable>0) do begin
if p.output.numBytesAvailable>0 then begin
setLength(s,p.output.numBytesAvailable);
setLength(s,p.output.read(s[1],length(s)));
result:=result+s;
continue;
end;
if content<>'' then begin
delete(content,1,p.input.write(content[1],min(128,length(content))));
if content='' then
p.closeInput;
continue;
end;
sleep(10);
end;
p.waitOnExit;
p.free;
end;
end.
|
