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For some reason arm64's Poly1305 code got changed to ignore the padbit
argument. As a result, the output is incorrect when the message length
is not a multiple of 16 (which is not reached with the standard
ChaCha20Poly1305, but bcachefs could reach this). Fix this.
Fixes: a59e5468a921 ("crypto: arm64/poly1305 - Add block-only interface")
Reported-by: Kent Overstreet <kent.overstreet@linux.dev>
Tested-by: Kent Overstreet <kent.overstreet@linux.dev>
Link: https://lore.kernel.org/r/20250616010654.367302-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
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This reverts commit c4741b23059794bd99beef0f700103b0d983b3fd.
Crypto API self-tests no longer run at registration time and now
occur either at late_initcall or upon the first use.
Therefore the premise of the above commit no longer exists. Revert
it and subsequent additions of subsys_initcall and arch_initcall.
Note that lib/crypto calls will stay at subsys_initcall (or rather
downgraded from arch_initcall) because they may need to occur
before Crypto API registration.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Now that every architecture provides a block function, use that
to implement the lib/poly1305 and remove the old per-arch code.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Add block-only interface.
Also remove the unnecessary SIMD fallback path.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Continue disentangling the crypto library functions from the generic
crypto infrastructure by moving the arm64 ChaCha and Poly1305 library
functions into a new directory arch/arm64/lib/crypto/ that does not
depend on CRYPTO. This mirrors the distinction between crypto/ and
lib/crypto/.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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