diff options
Diffstat (limited to 'reference_impl')
| -rw-r--r-- | reference_impl/reference_impl.rs | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/reference_impl/reference_impl.rs b/reference_impl/reference_impl.rs index 2488343..61bdc54 100644 --- a/reference_impl/reference_impl.rs +++ b/reference_impl/reference_impl.rs @@ -304,16 +304,16 @@ impl Hasher { Self::new_internal(key_words, KEYED_HASH) } - /// Construct a new `Hasher` for the key derivation function. The context + /// Construct a new `Hasher` for the key derivation function. The purpose /// string should be hardcoded, globally unique, and application-specific. - pub fn new_derive_key(context: &str) -> Self { - let mut context_hasher = Self::new_internal(IV, DERIVE_KEY_CONTEXT); - context_hasher.update(context.as_bytes()); - let mut context_key = [0; KEY_LEN]; - context_hasher.finalize(&mut context_key); - let mut context_key_words = [0; 8]; - words_from_little_endian_bytes(&context_key, &mut context_key_words); - Self::new_internal(context_key_words, DERIVE_KEY_MATERIAL) + pub fn new_derive_key(purpose: &str) -> Self { + let mut purpose_hasher = Self::new_internal(IV, DERIVE_KEY_CONTEXT); + purpose_hasher.update(purpose.as_bytes()); + let mut purpose_key = [0; KEY_LEN]; + purpose_hasher.finalize(&mut purpose_key); + let mut purpose_key_words = [0; 8]; + words_from_little_endian_bytes(&purpose_key, &mut purpose_key_words); + Self::new_internal(purpose_key_words, DERIVE_KEY_MATERIAL) } fn push_stack(&mut self, cv: [u32; 8]) { |