Module hash_feeder 

Streaming SHA-512 input assembly and the 4 KiB message replay cache.

HashFeederEngine combines an internal crate::sha512::Sha512Engine with prefix selection, 64-bit message-word framing, logical/external byte counters, and signing-pass replay requests.

Structs

HashFeederEngine

Message-to-SHA adapter with one 4096-byte synchronous BRAM cache.

HashFeederIn

Hash-feeder command and external message input.

HashFeederOut

Hash-feeder response, replay request, digest, and traffic counters.

HashFeederRegs

Registered word-unpacking, cache-address, framing, and counter state.

Enums

HashFeederState

External, replay, SHA-wait, and completion states.

Constants

HASH_SOURCE_CACHE_TAIL

Replay the 4 KiB cache, then request an external tail at offset 4096.

HASH_SOURCE_EXTERNAL

Read the complete message externally without caching it.

HASH_SOURCE_EXTERNAL_CACHE

Read an external message and cache its first 4 KiB.

HASH_SOURCE_INTERNAL

Hash only the internal prefix; the logical message length must be zero.

Functions

hash_feeder_engine_kernel

Next-state/output kernel for HashFeederEngine.