def isValidKey(streamObj):
"""
checks if the given stream contains a valid key block
"""
streamObj.seek(0)
kk = ezKey()
return kk.importKey(streamObj.read())
def getKeyFor(path=defaultKeyFilePath()):
"""
@return: the key stored in the supplied file
"""
angelKey = ezKey()
angelKey.importKey(open(path).read())
return angelKey
def _metaDataIsCorrect(self):
publicKey = ezKey()
publicKey.importKey(self.publicKeyString())
sm = self.signableMetadata()
ms = self.metaDataSignature()
#log.debug(ms)
#log.debug(sm)
try:
isCorrect = publicKey.verifyString(sm, ms)
if not isCorrect:
log.info("Incorrect meta data for: %r", self.resourceID())
log.info("Meta data to be signed: %r", self.signableMetadata())
return False
else:
return True
except Exception, e:
log.debug("TODO more specific error handling needed here",
exc_info=e)
log.info("Can not verify metadata %s against signature %s",
sm,
ms,
exc_info=e)
return False
def createKey(filePath=defaultKeyFilePath()):
kk = ezKey()
# TODO: make key size configurable
kk.makeNewKeys()
log.info("creating new key in file: %r", filePath)
t = SingleFileTransaction()
safe = t.open(filePath, 'w')
safe.write(kk.exportKeyPrivate())
t.commit()
return kk
def isValidKeyPair(streamObj):
"""
check sif the given stream contains a key pair (public AND private key)
"""
kk = ezKey()
streamObj.seek(0)
result = False
if isValidKey(streamObj):
log.debug("Valid key!")
streamObj.seek(0)
if kk.importKey(streamObj.read()):
log.debug("could import")
if len(kk.exportKeyPrivate()) > 0:
log.debug("could export")
result = True
# streamObj.seek(0)
return result
def _metaDataIsCorrect(self):
publicKey = ezKey()
publicKey.importKey(self.publicKeyString())
sm = self.signableMetadata()
ms = self.metaDataSignature()
#log.debug(ms)
#log.debug(sm)
try:
isCorrect = publicKey.verifyString(sm, ms)
if not isCorrect:
log.info("Incorrect meta data for: %r", self.resourceID())
log.info("Meta data to be signed: %r", self.signableMetadata())
return False
else:
return True
except Exception, e:
log.debug("TODO more specific error handling needed here", exc_info = e)
log.info("Can not verify metadata %s against signature %s", sm, ms, exc_info = e)
return False