stdlib: adds native hasher init procedure without padding (#1313)

CHANGELOG.md

@@ -1,10 +1,13 @@
 # Changelog
 
-## 0.9.0
+## 0.9.0 (TBD)
 
 #### Packaging
 - [BREAKING] The package `miden-vm` crate was renamed from `miden` to `miden-vm`. Now the package and crate names match (#1271).
 
+#### Stdlib
+- Added `init_no_padding` procedure to `std::crypto::hashes::native` (#1313).
+
 #### VM Internals
 - Removed unused `find_lone_leaf()` function from the Advice Provider (#1262).
 - [BREAKING] Changed fields type of the `StackOutputs` struct from `Vec<u64>` to `Vec<Felt>` (#1268).

stdlib/asm/crypto/hashes/native.masm

@@ -1,3 +1,15 @@
+#! Prepares the top of the stack with the hasher initial state.
+#!
+#! This procedures does not handle padding, therefore, the user is expected to
+#! consume an amount of data which is a multiple of the rate (2 words).
+#!
+#! Input: []
+#! Ouptut: [PERM, PERM, PERM, ...]
+#! Cycles: 12
+export.init_no_padding
+   padw padw padw
+end
+
 #! Given the hasher state, returns the hash output
 #!
 #! Input: [C, B, A, ...]