SQ(1)                            User Commands                           SQ(1)

NAME
       sq cert lint - Check certificates for issues

SYNOPSIS
       sq cert lint [OPTIONS] FILE

DESCRIPTION
       Check certificates for issues.

       `sq cert lint` checks the supplied certificates for the following
       SHA-1-related issues:

         - Whether a certificate revocation uses SHA-1.

         - Whether the current self signature for a non-revoked User ID uses
           SHA-1.

         - Whether the current subkey binding signature for a non-revoked,
           live subkey uses SHA-1.

         - Whether a primary key binding signature ("backsig") for a
           non-revoked, live subkey uses SHA-1.

       Diagnostics are printed to stderr.  At the end, some statistics are
       shown.  This is useful when examining a keyring.  If `--fix` is
       specified and at least one issue could be fixed, the fixed certificates
       are printed to stdout.

       This tool does not currently support smart cards.  But, if only the
       subkeys are on a smart card, this tool may still be able to partially
       repair the certificate.  In particular, it will be able to fix any
       issues with User ID self signatures and subkey binding signatures for
       encryption-capable subkeys, but it will not be able to generate new
       primary key binding signatures for any signing-capable subkeys.



OPTIONS
   Subcommand options
       -B, --binary
              Emit binary data

       -F, --fix
              Attempts to fix certificates, when possible

       -e, --export-secret-keys
              When fixing a certificate, the fixed certificate is exported
              without any secret key material.  Using this switch causes any
              secret key material to also be exported

       -k, --list-keys
              If set, outputs a list of fingerprints, one per line, of
              certificates that have issues.  This output is intended for use
              by scripts.

              This option implies `--quiet`. If you also specify `--fix`,
              errors will still be printed to stderr, and fixed certificates
              will still be emitted to stdout.

       -o, --output=FILE
              Write to FILE or stdout if omitted

              [default: -]

       -q, --quiet
              Quiet; does not output any diagnostics

        FILE  Read from FILE or stdin if omitted

   Global options
       See sq(1) for a description of the global options.

EXIT STATUS
       If `--fix` is not specified:
         2  if any issues were found,
         1  if not issues were found, but there were errors reading the input,
         0  if there were no issues.

       If `--fix` is specified:
         3  if any issues could not be fixed,
         1  if not issues were found, but there were errors reading the input,
         0  if all issues were fixed or there were no issues.

EXAMPLES
       To gather statistics, simply run:

              sq cert lint keyring.pgp



       To fix a key:

              gpg --export-secret-keys FPR \
                     | sq cert lint --fix -p passw0rd -p password123 \
                     | gpg --import



       To get a list of keys with issues:

              sq cert lint --list-keys keyring.pgp \
                     | while read FPR; do something; done

SEE ALSO
       sq(1), sq-cert(1).

       For the full documentation see <https://book.sequoia-pgp.org>.

VERSION
       0.35.0 (sequoia-openpgp 1.20.0)

Sequoia PGP                         0.35.0                               SQ(1)