libolm - Implementation of the olm and megolm cryptographic ratchets

Age	Commit message (Collapse)	Author
2016-05-25	Remove session_id from group messages	Richard van der Hoff
	Putting the session_id inside the packed message body makes it hard to extract so that we can decide which session to use. We don't think there is any advantage to having thes sesion_id protected by the HMACs, so we're going to move it to the JSON framing.
2016-05-24	Separate base64ing from the rest of msg encoding	Richard van der Hoff
	Factor the actual message encoding/decoding and encrypting/decrypting out to separate functions from the top-level functions which do the base64-wrangling. This is particularly helpful in the 'outbound' code-path where the offsets required to allow room to base64-encode make the flow hard to see when it's all inline.
2016-05-24	Update megolm_cipher as a global struct	Richard van der Hoff
	Initialise megolm_cipher via the preprocessor macro, instead of with a function.
2016-05-24	Use _olm_unset instead of memset	Richard van der Hoff
	memset is at risk of being optimised away, so use _olm_unset instead.
2016-05-24	Avoid relying on uint -> int casting behaviour	Richard van der Hoff
	The behaviour when casting from a uint32_t which has overflowed (so has the top bit set) to int32_t is implementation-defined, so let's avoid relying on it.
2016-05-24	Fix up some names, and protobuf tags	Richard van der Hoff
	Make names (of session_key and message_index) more consistent. Use our own protobuf tags rather than trying to piggyback on the one-to-one structure.
2016-05-24	Support for pickling inbound group sessions	Richard van der Hoff

2016-05-24	Implement decrypting inbound group messages	Richard van der Hoff
	Includes creation of inbound sessions, etc