1ca1b91794
In preparation for adding XChaCha12 support, rename/refactor
chacha20-generic to support different numbers of rounds. The
justification for needing XChaCha12 support is explained in more detail
in the patch "crypto: chacha - add XChaCha12 support".
The only difference between ChaCha{8,12,20} are the number of rounds
itself; all other parts of the algorithm are the same. Therefore,
remove the "20" from all definitions, structures, functions, files, etc.
that will be shared by all ChaCha versions.
Also make ->setkey() store the round count in the chacha_ctx (previously
chacha20_ctx). The generic code then passes the round count through to
chacha_block(). There will be a ->setkey() function for each explicitly
allowed round count; the encrypt/decrypt functions will be the same. I
decided not to do it the opposite way (same ->setkey() function for all
round counts, with different encrypt/decrypt functions) because that
would have required more boilerplate code in architecture-specific
implementations of ChaCha and XChaCha.
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Martin Willi <martin@strongswan.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright 2008-2011 Freescale Semiconductor, Inc.
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*/
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#ifndef CAAM_COMPAT_H
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#define CAAM_COMPAT_H
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <linux/crypto.h>
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#include <linux/hash.h>
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#include <linux/hw_random.h>
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#include <linux/of_platform.h>
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#include <linux/dma-mapping.h>
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#include <linux/io.h>
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#include <linux/iommu.h>
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#include <linux/spinlock.h>
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#include <linux/rtnetlink.h>
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#include <linux/in.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/debugfs.h>
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#include <linux/circ_buf.h>
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#include <linux/clk.h>
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#include <net/xfrm.h>
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#include <crypto/algapi.h>
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#include <crypto/null.h>
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#include <crypto/aes.h>
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#include <crypto/ctr.h>
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#include <crypto/des.h>
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#include <crypto/gcm.h>
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#include <crypto/sha.h>
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#include <crypto/md5.h>
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#include <crypto/chacha.h>
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#include <crypto/poly1305.h>
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#include <crypto/internal/aead.h>
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#include <crypto/authenc.h>
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#include <crypto/akcipher.h>
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#include <crypto/scatterwalk.h>
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#include <crypto/skcipher.h>
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#include <crypto/internal/skcipher.h>
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#include <crypto/internal/hash.h>
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#include <crypto/internal/rsa.h>
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#include <crypto/internal/akcipher.h>
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#endif /* !defined(CAAM_COMPAT_H) */
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