NAME

pkcs7 − PKCS#7 utility

SYNOPSIS

openssl pkcs7 [−inform PEM | DER] [−outform PEM | DER] [−in filename] [−out filename] [−print_certs] [−text] [−noout]

OPTIONS

−informDER|PEM
Specifies the input format. The DER format is DER encoded PKCS#7 v1.5 structure. The PEM format (the default) is a base64 encoded version of the DER form with header and footer lines. 

−outformDER|PEM
Specifies the output format. The options have the same meaning as the −inform option. 

−infilename
Specifies the input filename to read from or standard input if this option is not specified.

−outfilename
Specifies the output filename to write to or standard output by default.

−print_certs
Prints out any certificates or CRLs contained in the file. They are preceded by their subject and issuer names in one-line format.

−textPrints out certificate details in full rather than just subject and issuer names. 

−nooutDoes not output the encoded version of the PKCS#7 structure (or certificates if −print_certs is set). 

DESCRIPTION

The pkcs7 command processes PKCS#7 files in DER or PEM format. 

NOTES

The PEM PKCS#7 format uses the header and footer lines:

 -----BEGIN PKCS7-----
 -----END PKCS7-----

For compatability with some CAs it will also accept:

 -----BEGIN CERTIFICATE-----
 -----END CERTIFICATE-----

RESTRICTIONS

There is no option to print out all the fields of a PKCS#7 file. 

These PKCS#7 routines only understand PKCS#7 v 1.5 as specified in RFC2315.  For example, they  cannot currently parse the new CMS as described in RFC2630. 

EXAMPLES

Convert a PKCS#7 file from PEM to DER:

 openssl pkcs7 -in file.pem -outform DER -out file.der

Output all certificates in a file:

 openssl pkcs7 -in file.pem -print_certs -out certs.pem

SEE ALSO

Commands: crl2pkcs7(1ssl)