Module headers 

headers/mod.rs Public module export for the streaming envelope headers.

Industry notes:

• Fixed-size header (80 bytes) enables deterministic IO and simple embedding.
• Explicit IDs (cipher, PRF, compression, strategy) avoid silent incompatibilities.
• Key ID and salt align with HSM/KMS practices: stream points to key version, secrets stay external.
• Flags declare presence of optional metadata (totals, CRC, terminator/digest frames).
• AAD domain binds header semantics into per-frame AEAD AAD, preventing cross-protocol confusion.

Re-exports

pub use types::*;

pub use encode::*;

pub use decode::*;

Modules

decode

src/headers/decode.rs

encode

src/headers/encode.rs

types

headers/types.rs Core header struct and typed views.