---
name: "cert2spc"
section: "1"
platform: "linux"
package: "mono"
version: "6.12.0.206-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/cert2spc"
---

# cert2spc(1)

Transform multiple X.509 certificates to a Software Publisher Certificate

## NAME

cert2spc - Transform multiple X.509 certificates to a Software  Publisher Certificate

## SYNOPSIS

**cert2spc certificate\|crl \[certificate\|crl ...\] outputfile.spc**

## DESCRIPTION

Combine a list of X.509 certificates or X.509 CRL (Certificate  Revocation List) into a Software Publisher Certificate (PKCS#7 file). The SPC file is required for signing a PE file (like an assembly) using signcode.

## PARAMETERS

- *certificate*

  One (or more) X.509 certificate to add (space separated).

- *crl*

  One (or more) X.509 CRL to add (space separated).

- *output.spc*

  Software Publisher Certificate to output. If the specified file  exists it will be overwritten.

## AUTHOR

Written by Sebastien Pouliot

## COPYRIGHT

Copyright (C) 2002, 2003 Motus Technologies.  Released under BSD license.

## MAILING LISTS

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

## WEB SITE

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

## SEE ALSO

**[makecert(1)](/makecert/1.md),**[signcode(1)](/signcode/1.md)