Bug 1630

Summary:

ssh-keygen export of public keys (RFC4716 format) can include too-long lines

Product:

Portable OpenSSH

Reporter:

TJ Saunders <tj>

Component:

ssh-keygen

Assignee:

Assigned to nobody <unassigned-bugs>

Status:

CLOSED FIXED

Severity:

minor

CC:

djm, dtucker

Priority:

Version:

5.1p1

Hardware:

All

OS:

All

Bug Depends on:

Bug Blocks:

1626

Attachments:

Description	Flags
ssh-keygen: wrap long comment lines	none
truncate at 72 chars	dtucker: ok+

Description TJ Saunders 2009-08-06 15:25:00 AEST

When ssh-keygen -e is used to export a public key into an RFC4716 formatted file, it is possible for the Comment header line to be longer than the maximum line length required by RFC4716.  For example, I have seen Comment header lines which exceed the 72-byte line length maximum (excluding line terminators).

To handle such long Comment (or other header) values, ssh-keygen should split the header value over multiple lines using the '\' line continuation character specified in RFC4716.

Comment 1 Darren Tucker 2009-10-24 16:44:08 AEDT

Created attachment 1705 [details]
ssh-keygen: wrap long comment lines

Thanks for the report, we'll target this at 5.4.

Comment 2 Damien Miller 2009-11-20 11:47:04 AEDT

Created attachment 1725 [details]
truncate at 72 chars

As per Markus' suggestion, just truncate at 72 chars

Comment 3 Damien Miller 2010-01-11 21:51:26 AEDT

patch applied - this will be in OpenSSH 5.4

Comment 4 Darren Tucker 2010-03-26 10:51:41 AEDT

With the release of 5.4p1, this bug is now considered closed.