Add rpc_hash.c. Convert dynamic allocator in hash.c to use private

pool of pre-configured state blocks, suitable for an embedded system.

1 files changed, 14 insertions, 0 deletions

diff --git a/hal.h b/hal.h
index eb1e253..1ccc491 100644
--- a/hal.h
+++ b/hal.h
@@ -221,7 +221,17 @@ typedef struct hal_hash_driver hal_hash_driver_t;
  * problem.
  */
 
+typedef enum {
+  hal_digest_algorithm_sha1,
+  hal_digest_algorithm_sha256,
+  hal_digest_algorithm_sha512_224,
+  hal_digest_algorithm_sha512_256,
+  hal_digest_algorithm_sha384,
+  hal_digest_algorithm_sha512
+} hal_digest_algorithm_t;
+
 typedef struct {
+  hal_digest_algorithm_t digest_algorithm;
   size_t block_length;
   size_t digest_length;
   size_t hash_state_length;
@@ -284,6 +294,10 @@ extern void hal_hash_cleanup(hal_hash_state_t **state);
 
 extern void hal_hmac_cleanup(hal_hmac_state_t **state);
 
+extern const hal_hash_descriptor_t *hal_hash_get_descriptor(const hal_hash_state_t * const state);
+
+extern const hal_hash_descriptor_t *hal_hmac_get_descriptor(const hal_hmac_state_t * const state);
+
 /*
  * AES key wrap functions.
  */