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ceba0eda83
Currently the RISC-V optimized ChaCha20 is only wired up to the crypto_skcipher API, which makes it unavailable to users of the library API. The crypto_skcipher API for ChaCha20 is going to change to be implemented on top of the library API, so the library API needs to be supported. And of course it's needed anyway to serve the library users. Therefore, change the RISC-V ChaCha20 code to implement the library API instead of the crypto_skcipher API. The library functions take the ChaCha state matrix directly (instead of key and IV) and support both ChaCha20 and ChaCha12. To make the RISC-V code work properly for that, change the assembly code to take the state matrix directly and add a nrounds parameter. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.