address_book_crypto.c File Reference

HMAC Proof of Registration for Address Book contacts. More...

#include <string.h>
#include <stdint.h>
#include "address_book_crypto.h"
#include "ledger_account.h"
#include "identity.h"
#include "lcx_sha256.h"
#include "lcx_rng.h"
#include "os_utils.h"
#include "os_address_book.h"
#include "io.h"

Include dependency graph for address_book_crypto.c:

Go to the source code of this file.

Detailed Description

HMAC Proof of Registration for Address Book contacts.

All HMAC key derivation and computation are delegated to two OS syscalls:

• sys_address_book_hmac() — compute HMAC
• sys_address_book_hmac_verify() — verify HMAC (constant-time)

This file is responsible only for serializing the HMAC message before calling the appropriate syscall.

Definition in file address_book_crypto.c.