Struct snow::TransportState
source · [−]pub struct TransportState { /* private fields */ }
Expand description
A state machine encompassing the transport phase of a Noise session, using the two
CipherState
s (for sending and receiving) that were spawned from the SymmetricState
’s
Split()
method, called after a handshake has been finished.
Also see: the relevant Noise spec section.
Implementations
Get the remote party’s static public key, if available.
Note: will return None
if either the chosen Noise pattern
doesn’t necessitate a remote static key, or if the remote
static key is not yet known (as can be the case in the XX
pattern, for example).
Construct a message from payload
(and pending handshake tokens if in handshake state),
and writes it to the output
buffer.
Returns the size of the written payload.
Errors
Will result in Error::Input
if the size of the output exceeds the max message
length in the Noise Protocol (65535 bytes).
Reads a noise message from input
Returns the size of the payload written to payload
.
Errors
Will result in Error::Decrypt
if the contents couldn’t be decrypted and/or the
authentication tag didn’t verify.
Will result in StateProblem::Exhausted
if the max nonce overflows.
Generates a new key for the egress symmetric cipher according to Section 4.2 of the Noise Specification. Synchronizing timing of rekey between initiator and responder is the responsibility of the application, as described in Section 11.3 of the Noise Specification.
Generates a new key for the ingress symmetric cipher according to Section 4.2 of the Noise Specification. Synchronizing timing of rekey between initiator and responder is the responsibility of the application, as described in Section 11.3 of the Noise Specification.
Set a new key for the one or both of the initiator-egress and responder-egress symmetric ciphers.
Set a new key for the initiator-egress symmetric cipher.
Set a new key for the responder-egress symmetric cipher.
Sets the receiving CipherState’s nonce. Useful for using noise on lossy transports.
Get the forthcoming inbound nonce value.
Errors
Will result in Error::State
if not in transport mode.
Get the forthcoming outbound nonce value.
Errors
Will result in Error::State
if not in transport mode.
Check if this session was started with the “initiator” role.