You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
56 lines
1.5 KiB
56 lines
1.5 KiB
#!/usr/bin/env python
|
|
#
|
|
# This file is part of pyasn1-modules software.
|
|
#
|
|
# Copyright (c) 2005-2019, Ilya Etingof <etingof@gmail.com>
|
|
# License: http://snmplabs.com/pyasn1/license.html
|
|
#
|
|
# Read ASN.1/PEM PKCS#7 on stdin, parse it into plain text,
|
|
# then build substrate from it
|
|
#
|
|
import sys
|
|
|
|
from pyasn1.codec.der import decoder
|
|
from pyasn1.codec.der import encoder
|
|
|
|
from pyasn1_modules import pem
|
|
from pyasn1_modules import rfc2315
|
|
|
|
if len(sys.argv) != 1:
|
|
print("""Usage:
|
|
$ cat pkcs7Certificate.pem | %s""" % sys.argv[0])
|
|
sys.exit(-1)
|
|
|
|
idx, substrate = pem.readPemBlocksFromFile(
|
|
sys.stdin, ('-----BEGIN PKCS7-----', '-----END PKCS7-----')
|
|
)
|
|
|
|
assert substrate, 'bad PKCS7 data on input'
|
|
|
|
contentInfo, rest = decoder.decode(substrate, asn1Spec=rfc2315.ContentInfo())
|
|
|
|
if rest:
|
|
substrate = substrate[:-len(rest)]
|
|
|
|
print(contentInfo.prettyPrint())
|
|
|
|
assert encoder.encode(contentInfo) == substrate, 're-encode fails'
|
|
|
|
contentType = contentInfo.getComponentByName('contentType')
|
|
|
|
contentInfoMap = {
|
|
(1, 2, 840, 113549, 1, 7, 1): rfc2315.Data(),
|
|
(1, 2, 840, 113549, 1, 7, 2): rfc2315.SignedData(),
|
|
(1, 2, 840, 113549, 1, 7, 3): rfc2315.EnvelopedData(),
|
|
(1, 2, 840, 113549, 1, 7, 4): rfc2315.SignedAndEnvelopedData(),
|
|
(1, 2, 840, 113549, 1, 7, 5): rfc2315.DigestedData(),
|
|
(1, 2, 840, 113549, 1, 7, 6): rfc2315.EncryptedData()
|
|
}
|
|
|
|
content, _ = decoder.decode(
|
|
contentInfo.getComponentByName('content'),
|
|
asn1Spec=contentInfoMap[contentType]
|
|
)
|
|
|
|
print(content.prettyPrint())
|