openssh bugs - Aug 2009 - [Bug 1630] New: ssh-keygen export of public keys (RFC4716 format) can include too-long lines

https://bugzilla.mindrot.org/show_bug.cgi?id=1630

           Summary: ssh-keygen export of public keys (RFC4716 format) can
                    include too-long lines
           Product: Portable OpenSSH
           Version: 5.1p1
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: minor
          Priority: P4
         Component: ssh-keygen
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: tj at castaglia.org


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.

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https://bugzilla.mindrot.org/show_bug.cgi?id=1630

--- Comment #1 from Darren Tucker <dtucker at zip.com.au> 2009-10-24
16:44:08 EST ---
Created an attachment (id=1705)
 --> (https://bugzilla.mindrot.org/attachment.cgi?id=1705)
ssh-keygen: wrap long comment lines

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

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Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dtucker at zip.com.au
             Blocks|                            |1626

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #1725|                            |ok?
               Flag|                            |

--- Comment #2 from Damien Miller <djm at mindrot.org> 2009-11-20 11:47:04
EST ---
Created an attachment (id=1725)
 --> (https://bugzilla.mindrot.org/attachment.cgi?id=1725)
truncate at 72 chars

As per Markus' suggestion, just truncate at 72 chars

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Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #1725|ok?                         |ok+
               Flag|                            |

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Damien Miller <djm at mindrot.org> 2010-01-11 21:51:26
EST ---
patch applied - this will be in OpenSSH 5.4

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Darren Tucker <dtucker at zip.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Darren Tucker <dtucker at zip.com.au> 2010-03-26
10:51:41 EST ---
With the release of 5.4p1, this bug is now considered closed.

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