NAME

       sn - Digitally sign/verify/compare strongnames on CLR assemblies.

SYNOPSIS

       sn [-q | -quiet] [options] [parameters]

DESCRIPTION

       Digitally sign, verify or compare CLR assemblies using strongnames.

       You can use the sn command to create "snk files" using the -k option described below.

CONFIGURATION OPTIONS

       Configuration   options   are  stored  in  the  machine.config  configuration  file  under
       /configuration/strongNames.

       -c provider
              Change the default CSP (Crypto Service Provider). Currently not supported in Mono.

       -m [y|n]
              Use a machine [y] key  container  or  a  user  [n]  key  container.  Currently  not
              supported in Mono.

       -Vl    List   the   verification   options.   The   list  is  kept  under  /configuration/
              strongNames/verificationSettings in machine.config.

       -Vr assembly [userlist]
              Exempt the specified assembly  from  verification  for  the  specified  user  list.
              Currently not supported by sn. You must edit machine.config manually if you require
              this.

       -Vu assembly
              Remove the exemption entry for the specified assembly. Currently not  supported  by
              sn, you must edit machine.config manually if you require this.

       -Vx    Remove  all  exemptions  entries.  Currently  not  supported  by  sn, you must edit
              machine.config manually if you require this.

CSP RELATED OPTIONS

       -d container
              Delete the keypair present in the specified key container.

       -i keypair.snk container
              Import the specified strongname file into the specified container.

       -pc container publickey
              Export the public key from the specified CSP container to the specified file.

CONVERSION OPTIONS

       -e assembly output.pub
              Export the assembly public key to the specified output file.

       -p keypair.snk output.pub
              Export the public key from the specified  strongname  key  file  (SNK)  or  from  a
              PKCS#12/PFX password protected file to the specified output file.

       -o input output.txt
              Convert the input file to a CSV file (using decimal).

       -oh input output.txt
              Convert the input file to a CSV file (using hexadecimal).

STRONGNAME SIGNING OPTIONS

       -D assembly1 assembly2
              Compare if assembly1 and assembly are the same exception for their signature.  This
              is done by comparing the hash of the metadata of both assembly.

       -k [size] keypair.snk
              Create a new strongname keypair in the specified file. The default  key  length  is
              1024  bits and MUST ALWAYS be used when signing 1.x assemblies.  Any value from 384
              to 16384 bits (in increments of  8  bits)  is  a  valid  key  length  to  sign  2.x
              assemblies.  To  ensure  maximum  compatibility you may want to continue using 1024
              bits keys. Note that there's no good reason, even if it's possible, to  use  length
              lesser than 1024 bits.

       -R assembly keypair.snk
              Re-sign the specified assembly using the specified strongname keypair file (SNK) or
              a PKCS#12/PFX password protected file. You can  only  sign  an  assembly  with  the
              private  key  that match the public key inside the assembly (unless it's public key
              token has been remapped in machine.config).

       -Rc assembly container
              Re-sign the specified assembly using the specified strongname container.

       -t file
              Show the public key token from the specified file.

       -tp file
              Show the public key and the public key token from the specified file.

       -T assembly
              Show the public key token from the specified assembly.

       -Tp assembly
              Show the public key and the public key token from the specified assembly.

       -v assembly
              Verify the specified assembly signature.

       -vf assembly
              Verify the specified assembly signature (even if disabled).

HELP OPTIONS

       -h , -?
              Display basic help about this tool.

       -h config , -? config
              Display configuration related help about this tool.

       -h csp , -? csp
              Display Cryptographic Service Provider related help about this tool.

       -h convert , -? convert
              Display conversion related help about this tool.

       -h sn , -? sn
              Display strongname related help about this tool.

CONFIGURATION FILE

       Strongnames configuration is kept in "machine.config" file. Currently two
              features can be configured.

       /configuration/strongNames/pubTokenMapping
              This mechanism lets Mono remap a public key token, like the ECMA token, to  another
              public  key  for  verification.  This is useful in two scenarios. First, assemblies
              signed with the "ECMA key" need to be verified by the "runtime" key  (as  the  ECMA
              key  isn't a public key). Second, many assemblies are signed with private keys that
              Mono can't use (e.g. System.Security.dll assembly).   A  new  key  cannot  be  used
              because it should change thr strongname (a new key pair would have a new public key
              which would produce a new token). Public key token remapping is  the  solution  for
              both  problems. Each token must be configured in a "map" entry similar to this one:
              <map Token="b77a5c561934e089" PublicKey="00..." />

       /configuration/strongNames/verificationSettings
              It is often useful during development to use delay  signed  assemblies.   Normally*
              the  runtime  wouldn't  allow  delay-signed  assemblies to be loaded.  This feature
              allows some delay-signed assemblies (based on their public  key  token,  optionally
              assembly name and user name) to be used like they were fully signed assemblies. [*]
              Note that Mono 1.0 "runtime" doesn't validate strongname signatures so this  option
              shouldn't be required in most scenarios.

AUTHOR

       Written by Sebastien Pouliot

COPYRIGHT

       Copyright  (C)  2003  Motus  Technologies.  Copyright (C) 2004 Novell.  Released under BSD
       license.

MAILING LISTS

       Visit http://lists.ximian.com/mailman/listinfo/mono-list for details.

WEB SITE

       Visit http://www.mono-project.com for details

SEE ALSO

       secutil(1)

                                                                                         Mono(sn)