# phpman > man > smime_keys(1)

[smime_keys(1)](https://www.chedong.com/phpMan.php/man/smimekeys/1/markdown)                               User Manuals                               [smime_keys(1)](https://www.chedong.com/phpMan.php/man/smimekeys/1/markdown)



## NAME
       smime_keys - Utility to add S/MIME certificate to the internal database used by mutt

## SYNOPSIS
       **smime**___**keys** <operation>  [file(s) | keyID [file(s)]]

## DESCRIPTION
       The  purpose  of this tool is to manipulate the internal database of S/MIME certificates used
       by mutt to sign mail messages which will be sent or to  verify  mail  messages  received  and
       signed with S/MIME.

## OPTIONS
       **init**   no files needed, inits directory structure.

### refresh
              no files needed. refreshes index files, including trust flag/expiration.

       **list**   lists the certificates stored in database.

       **label**  keyID required. changes/removes/adds label.

       **remove** keyID required.

       **verify** 1=keyID  and optionally 2=CRL.  Verifies the certificate chain, and optionally whether
              this certificate is included in supplied CRL (PEM format).  Note: to verify  all  cer‐
              tificates at the same time, replace keyID with "all".

       **add**___**cert**
              certificate required.

       **add**___**chain**
              three files reqd: 1=Key, 2=certificate plus 3=intermediate certificate(s).

       **add**___**p12**
              one file reqd. Adds keypair to database.  file is PKCS12 (e.g. export from netscape).

       **add**___**pem**
              one file reqd. Adds keypair to database.  (file was converted from e.g. PKCS12).

       **add**___**root**
              one  file  reqd.  Adds  PEM  root  certificate to the location specified within muttrc
              (smime_verify_* command).

## NO WARRANTIES
       This program is distributed in the hope that it will be useful,  but  WITHOUT  ANY  WARRANTY;
       without  even  the  implied  warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
       See the GNU General Public License for more details.

       Mutt Home Page: <http://www.mutt.org/>



Unix                                     September 19, 2020                            [smime_keys(1)](https://www.chedong.com/phpMan.php/man/smimekeys/1/markdown)