NSS tools : vfychain


vfychain — vfychain [options] [revocation options] certfile [[options]
certfile] …




The verification Tool, vfychain, verifies certificate chains. modutil can
add and delete PKCS #11 modules, change passwords on security databases,
set defaults, list module contents, enable or disable slots, enable or
disable FIPS 140-2 compliance, and assign default providers for
cryptographic operations. This tool can also create certificate, key, and
module security database files.
The tasks associated with security module database management are part of
a process that typically also involves managing key databases and
certificate databases.


the following certfile is base64 encoded
Validate date (default: now)
-d directory
database directory
Enable cert fetching from AIA URL
-o oid
Set policy OID for cert validation(Format OID.1.2.3)


Use PKIX Library to validate certificate by calling:

* CERT_VerifyCertificate if specified once,

* CERT_PKIXVerifyCert if specified twice and more.

Following certfile is raw binary DER (default)
Following cert is explicitly trusted (overrides db trust)

-u usage

0=SSL client, 1=SSL server, 2=SSL StepUp, 3=SSL CA, 4=Email
signer, 5=Email recipient, 6=Object signer,
9=ProtectedObjectSigner, 10=OCSP responder, 11=Any CA
Verbose mode. Prints root cert subject(double the argument for
whole root cert info)
-w password
Database password
-W pwfile
Password file
Revocation options for PKIX API (invoked with -pp options) is a
collection of the following flags: [-g type [-h flags] [-m type
[-s flags]] …] …


-g test-type
Sets status checking test type. Possible values are “leaf” or
-g test type
Sets status checking test type. Possible values are “leaf” or
-h test flags
Sets revocation flags for the test type it follows. Possible
flags: “testLocalInfoFirst” and “requireFreshInfo”.
-m method type
Sets method type for the test type it follows. Possible types are
“crl” and “ocsp”.
-s method flags
Sets revocation flags for the method it follows. Possible types
are “doNotUse”, “forbidFetching”, “ignoreDefaultSrc”,
“requireInfo” and “failIfNoInfo”.

Additional Resources

For information about NSS and other tools related to NSS (like JSS), check
out the NSS project wiki at
directly to NSS code changes and releases.

Mailing lists: https://lists.mozilla.org/listinfo/dev-tech-crypto

IRC: Freenode at #dogtag-pki


The NSS tools were written and maintained by developers with Netscape, Red
Hat, and Sun.
Authors: Elio Maldonado <emaldona@redhat.com>, Deon Lackey


  1. 2010, Red Hat, Inc. Licensed under the GNU Public License version 2.