def dump_unencrypted(pkey):
keytype = pkey.__module__.rsplit('.',1)[-1]
if keytype == 'RSA':
algoId = OID_PKCS_RSAPKEY
algoParms = None
vals = [0, pkey.n, pkey.e, pkey.d, pkey.p, pkey.q,
pkey.d % (pkey.p - 1), pkey.d % (pkey.q - 1),
inverse(pkey.q, pkey.p)]
pkeyData = asn1.dumps(vals)
elif keytype == 'DSA':
algoId = OID_PKCS_DSAPKEY
algoParms = (pkey.p, pkey.q, pkey.g)
pkeyData = asn1.dumps(pkey.x)
elif keytype == 'ElGamal':
algoId = OID_PKCS_DHPKEY
algoParms = (pkey.p, pkey.g)
pkeyData = asn1.dumps(pkey.x)
else:
raise TypeError('unknown private key implementation')
pkeyAlgo = (algoId, algoParms)
return (0, pkeyAlgo, pkeyData)
def dump_encrypted(pkey, cipher): pkeyInfo = dump_unencrypted(pkey) pkeyData = asn1.dumps(pkeyInfo) encrAlgo = _pbecipher_toAlgoInfo(cipher) encrData = cipher.encrypt(pkeyData) return (encrAlgo, encrData)
