def check_blob_signatures():
for blob in blobs:
length = blob['length']
if length != 0:
blob_hash = blob['blob_hash']
else:
blob_hash = None
blob_num = blob['blob_num']
revision = blob['revision']
iv = blob['iv']
signature = blob['signature']
hashsum = get_lbry_hash_obj()
hashsum.update(stream_hash)
if length != 0:
hashsum.update(blob_hash)
hashsum.update(str(blob_num))
hashsum.update(str(revision))
hashsum.update(iv)
hashsum.update(str(length))
if not verify_signature(hashsum.digest(), signature, public_key):
raise InvalidStreamDescriptorError("Invalid signature in stream descriptor")
def _verify_blob(self, blob):
log.debug("Got an unverified blob to check:")
log.debug("blob_hash: %s", blob.blob_hash)
log.debug("blob_num: %s", str(blob.blob_num))
log.debug("revision: %s", str(blob.revision))
log.debug("iv: %s", blob.iv)
log.debug("length: %s", str(blob.length))
hashsum = get_lbry_hash_obj()
hashsum.update(self.stream_hash)
if blob.length != 0:
hashsum.update(blob.blob_hash)
hashsum.update(str(blob.blob_num))
hashsum.update(str(blob.revision))
hashsum.update(blob.iv)
hashsum.update(str(blob.length))
log.debug("hexdigest to be verified: %s", hashsum.hexdigest())
if verify_signature(hashsum.digest(), blob.signature, self.stream_pub_key):
log.debug("Blob info is valid")
return True
else:
log.debug("The blob info is invalid")
return False
def _verify_blob(self, blob):
log.debug("Got an unverified blob to check:")
log.debug("blob_hash: %s", blob.blob_hash)
log.debug("blob_num: %s", str(blob.blob_num))
log.debug("revision: %s", str(blob.revision))
log.debug("iv: %s", blob.iv)
log.debug("length: %s", str(blob.length))
hashsum = get_lbry_hash_obj()
hashsum.update(self.stream_hash)
if blob.length != 0:
hashsum.update(blob.blob_hash)
hashsum.update(str(blob.blob_num))
hashsum.update(str(blob.revision))
hashsum.update(blob.iv)
hashsum.update(str(blob.length))
log.debug("hexdigest to be verified: %s", hashsum.hexdigest())
if verify_signature(hashsum.digest(), blob.signature,
self.stream_pub_key):
log.debug("Blob info is valid")
return True
else:
log.debug("The blob info is invalid")
return False