diff options
Diffstat (limited to 'c/blake3.c')
| -rw-r--r-- | c/blake3.c | 24 |
1 files changed, 12 insertions, 12 deletions
@@ -369,20 +369,20 @@ void blake3_hasher_init_keyed(blake3_hasher *self, hasher_init_base(self, key_words, KEYED_HASH); } -void blake3_hasher_init_derive_key_raw(blake3_hasher *self, const void *context, - size_t context_len) { - blake3_hasher context_hasher; - hasher_init_base(&context_hasher, IV, DERIVE_KEY_CONTEXT); - blake3_hasher_update(&context_hasher, context, context_len); - uint8_t context_key[BLAKE3_KEY_LEN]; - blake3_hasher_finalize(&context_hasher, context_key, BLAKE3_KEY_LEN); - uint32_t context_key_words[8]; - load_key_words(context_key, context_key_words); - hasher_init_base(self, context_key_words, DERIVE_KEY_MATERIAL); +void blake3_hasher_init_derive_key_raw(blake3_hasher *self, const void *purpose, + size_t purpose_len) { + blake3_hasher purpose_hasher; + hasher_init_base(&purpose_hasher, IV, DERIVE_KEY_CONTEXT); + blake3_hasher_update(&purpose_hasher, purpose, purpose_len); + uint8_t purpose_key[BLAKE3_KEY_LEN]; + blake3_hasher_finalize(&purpose_hasher, purpose_key, BLAKE3_KEY_LEN); + uint32_t purpose_key_words[8]; + load_key_words(purpose_key, purpose_key_words); + hasher_init_base(self, purpose_key_words, DERIVE_KEY_MATERIAL); } -void blake3_hasher_init_derive_key(blake3_hasher *self, const char *context) { - blake3_hasher_init_derive_key_raw(self, context, strlen(context)); +void blake3_hasher_init_derive_key(blake3_hasher *self, const char *purpose) { + blake3_hasher_init_derive_key_raw(self, purpose, strlen(purpose)); } // As described in hasher_push_cv() below, we do "lazy merging", delaying |