Computes the transient id and workblock for a channel stamp.
transientId = SHA-256(channel_hash ‖ inner_blob); the workblock is the standard LXMF memory-hard HKDF expansion at rfed's 16 rounds (STAMP_EXPAND_ROUNDS × 256 bytes).
transientId = SHA-256(channel_hash ‖ inner_blob)
STAMP_EXPAND_ROUNDS × 256
16-byte channel identity hash.
EC-encrypted channel message (no stamp).
Computes the transient id and workblock for a channel stamp.
transientId = SHA-256(channel_hash ‖ inner_blob); the workblock is the standard LXMF memory-hard HKDF expansion at rfed's 16 rounds (STAMP_EXPAND_ROUNDS × 256bytes).