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- #!/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 bunch of ASN.1/PEM plain/encrypted private keys in PKCS#8
- # format on stdin, parse each 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 rfc5208
- if len(sys.argv) != 1:
- print("""Usage:
- $ cat pkcs8key.pem | %s""" % sys.argv[0])
- sys.exit(-1)
- cnt = 0
- while True:
- idx, substrate = pem.readPemBlocksFromFile(
- sys.stdin,
- ('-----BEGIN PRIVATE KEY-----', '-----END PRIVATE KEY-----'),
- ('-----BEGIN ENCRYPTED PRIVATE KEY-----', '-----END ENCRYPTED PRIVATE KEY-----')
- )
- if not substrate:
- break
- if idx == 0:
- asn1Spec = rfc5208.PrivateKeyInfo()
- elif idx == 1:
- asn1Spec = rfc5208.EncryptedPrivateKeyInfo()
- else:
- break
- key, rest = decoder.decode(substrate, asn1Spec=asn1Spec)
- if rest:
- substrate = substrate[:-len(rest)]
- print(key.prettyPrint())
- assert encoder.encode(key) == substrate, 'pkcs8 recode fails'
- cnt += 1
- print('*** %s PKCS#8 key(s) de/serialized' % cnt)
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