=head1 NAME

	verify - PKCS#7 Signatures Verification Tool

=head1 SYNOPSIS

	verify [-signature file] [-out file] [-data file] [-cf file]
	[-cd dir] [-print_data] [-verbose]

=head1 DESCRIPTION

	-signature file	Signature file
	-out file	Output file
	-data file	File containing signed data
	-cf file	CA's certificate file
	-cd certsdir	CAs' certificates directory
	-print_data	Print Signed Data to outfile
	-verbose	Verbose output

=head1 NOTES

The signature file is the file containing the PKCS7 structure to be
verified. Now it is possible to verify only PEM formatted pkcs7, such
files do have header and footer lines as follows:

-----BEGIN PKCS7-----
ASDADSSDASDASDa....
...................
....DSDSADADSADS==
-----END PKCS7-----

Providing the -cf file usually will fit for most applications, however if
you have chained certificates you can use the -cd certsdir to specify the
directory where CA certificates (and hashes values) are kept.

=head1 EXAMPLE

	./verify -signature README.sig -verbose -cf cacert.pem

=head1 AUTHOR

Massimiliano Pala <madwolf@openca.org>

=head1 SEE ALSO

openssl, OpenCA::OpenSSL, OpenCA::X509, OpenCA::REQ, OpenCA::CRL

=cut