[Bug 884] DSA keys (id_dsa.pub) with 8192 bytes or more aren't correctly recognized

[bugzilla-daemon at mindrot.org]

http://bugzilla.mindrot.org/show_bug.cgi?id=884

           Summary: DSA keys (id_dsa.pub) with 8192 bytes or more aren't
                    correctly recognized
           Product: Portable OpenSSH
           Version: 3.8.1p1
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: ssh
        AssignedTo: openssh-bugs at mindrot.org
        ReportedBy: dmr at gmx.it


Hello,
this is what I get using ssh with a 8192 bytes DSA key (produced with
'ssh-keygen -t dsa -b 8192'):

dmr:nicetas:0:~/openssh-3.8.1p1$ ./ssh bin
key_read: uudecode
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
login: Wed Jun 23 18:26:04 2004 from nicetas.disi.unige.it
root:bin:0:~# 

This seems had to the line buffer size found in key_try_load_public() of
authfile.c that is fixed to 4096 bytes.

Please found here below a patch of mine that _should_ help to solve the problem,
enlarging - on fly - the buffer size.

Regards,
Alessandro



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