This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C1DC4A.4E1898D0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Dear all, I am planning to add some cryptographic properties (file encryption and = digital signature on file I/O) to Linux filesystem. In detail, I want = that user can do file I/O with encrypted files like he used to do with = usual file except some minor changes (e.g. supply key for decrypting = file). For digital signature, all read and write acts on file of any = user must be signed and recorded so that someone else can give concrete = evidences that a user did something on files later on. At the first glance, I think I should implement new system calls for = file I/O with encrypted files and add sign procedure to current file I/O = system calls. Since I don't know much about kernel programming, VFS, = ext2 or ext3 filesystem then I don't know where I should start. Can = anybody give me some hints? Thanks, Dang Nguyen Duc ------=_NextPart_000_0009_01C1DC4A.4E1898D0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Dwindows-1252"> <META content=3D"MSHTML 6.00.2715.400" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Dear all,</FONT></DIV> <DIV><FONT face=3DArial size=3D2>I am planning to add some = cryptographic=20 properties (file encryption and digital signature on file I/O) to Linux=20 filesystem. In detail, I want that user can do file I/O with encrypted = files=20 like he used to do with usual file except some minor changes (e.g. = supply key=20 for decrypting file). For digital signature, all read and write acts on = file of=20 any user must be signed and recorded so that someone else can give = concrete=20 evidences that a user did something on files later on.</FONT></DIV> <DIV><FONT face=3DArial size=3D2>At the first glance, I think I should=20 implement new system calls for file I/O with encrypted files and = add sign=20 procedure to current file I/O system calls. Since I don't know much = about kernel=20 programming, VFS, ext2 or ext3 filesystem then I don't = know where I=20 should start. Can anybody give me some hints?</FONT></DIV> <DIV><FONT face=3DArial size=3D2>Thanks,</FONT></DIV> <DIV><FONT face=3DArial size=3D2>Dang Nguyen Duc</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV></BODY></HTML> ------=_NextPart_000_0009_01C1DC4A.4E1898D0--
