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For consistency with the SHA-1, SHA-2, SHA-3 (in development), and MD5
library APIs, rename blake2s_state to blake2s_ctx.
As a refresher, the ctx name:
- Is a bit shorter.
- Avoids confusion with the compression function state, which is also
often called the state (but is just part of the full context).
- Is consistent with OpenSSL.
Not a big deal, of course. But consistency is nice. With a BLAKE2b
library API about to be added, this is a convenient time to update this.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251018043106.375964-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Reorder the parameters of blake2s() from (out, in, key, outlen, inlen,
keylen) to (key, keylen, in, inlen, out, outlen).
This aligns BLAKE2s with the common conventions of pairing buffers and
their lengths, and having outputs follow inputs. This is widely used
elsewhere in lib/crypto/ and crypto/, and even elsewhere in the BLAKE2s
code itself such as blake2s_init_key() and blake2s_final(). So
blake2s() was a bit of an exception.
Notably, this results in the same order as hmac_*_usingrawkey().
Note that since the type signature changed, it's not possible for a
blake2s() call site to be silently missed.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251018043106.375964-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Add a KUnit test suite for BLAKE2s. Most of the core test logic is in
the previously-added hash-test-template.h. This commit just adds the
actual KUnit suite, commits the generated test vectors to the tree so
that gen-hash-testvecs.py won't have to be run at build time, and adds a
few BLAKE2s-specific test cases.
This is the replacement for blake2s-selftest, which an earlier commit
removed. Improvements over blake2s-selftest include integration with
KUnit, more comprehensive test cases, and support for benchmarking.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250827151131.27733-13-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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