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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 unencrypted PKCS#1/PKIX-compliant, PEM&DER encoded private keys on
- # stdin, print them pretty and encode back into original wire format.
- # Private keys can be generated with "openssl genrsa|gendsa" commands.
- #
- import sys
- from pyasn1.codec.der import decoder
- from pyasn1.codec.der import encoder
- from pyasn1_modules import pem
- from pyasn1_modules import rfc2437
- from pyasn1_modules import rfc2459
- if len(sys.argv) != 1:
- print("""Usage:
- $ cat rsakey.pem | %s""" % sys.argv[0])
- sys.exit(-1)
- cnt = 0
- while True:
- idx, substrate = pem.readPemBlocksFromFile(
- sys.stdin,
- ('-----BEGIN RSA PRIVATE KEY-----', '-----END RSA PRIVATE KEY-----'),
- ('-----BEGIN DSA PRIVATE KEY-----', '-----END DSA PRIVATE KEY-----')
- )
- if not substrate:
- break
- if idx == 0:
- asn1Spec = rfc2437.RSAPrivateKey()
- elif idx == 1:
- asn1Spec = rfc2459.DSAPrivateKey()
- 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 key(s) re/serialized' % cnt)
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