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e49a3eac92
Fix build warnings with W=1 that started appearing after
commit a934a57a42 ("scripts/misc-check: check missing #include
<linux/export.h> when W=1").
While at it, also sort the include lists alphabetically. (Keep
asm/irqflags.h last, as otherwise it doesn't build on alpha.)
This handles all of lib/crypto/, but not arch/*/lib/crypto/. The
exports in arch/*/lib/crypto/ will go away when the code is properly
integrated into lib/crypto/ as planned.
Link: https://lore.kernel.org/r/20250613184814.50173-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Poly1305 authenticator algorithm, RFC7539
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*
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* Copyright (C) 2015 Martin Willi
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*
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* Based on public domain code by Andrew Moon and Daniel J. Bernstein.
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*/
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#include <crypto/internal/blockhash.h>
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#include <crypto/internal/poly1305.h>
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#include <linux/export.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/unaligned.h>
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void poly1305_init(struct poly1305_desc_ctx *desc,
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const u8 key[POLY1305_KEY_SIZE])
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{
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desc->s[0] = get_unaligned_le32(key + 16);
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desc->s[1] = get_unaligned_le32(key + 20);
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desc->s[2] = get_unaligned_le32(key + 24);
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desc->s[3] = get_unaligned_le32(key + 28);
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desc->buflen = 0;
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if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
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poly1305_block_init_arch(&desc->state, key);
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else
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poly1305_block_init_generic(&desc->state, key);
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}
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EXPORT_SYMBOL(poly1305_init);
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static inline void poly1305_blocks(struct poly1305_block_state *state,
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const u8 *src, unsigned int len)
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{
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if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
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poly1305_blocks_arch(state, src, len, 1);
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else
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poly1305_blocks_generic(state, src, len, 1);
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}
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void poly1305_update(struct poly1305_desc_ctx *desc,
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const u8 *src, unsigned int nbytes)
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{
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desc->buflen = BLOCK_HASH_UPDATE(poly1305_blocks, &desc->state,
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src, nbytes, POLY1305_BLOCK_SIZE,
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desc->buf, desc->buflen);
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}
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EXPORT_SYMBOL(poly1305_update);
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void poly1305_final(struct poly1305_desc_ctx *desc, u8 *dst)
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{
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if (unlikely(desc->buflen)) {
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desc->buf[desc->buflen++] = 1;
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memset(desc->buf + desc->buflen, 0,
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POLY1305_BLOCK_SIZE - desc->buflen);
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if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
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poly1305_blocks_arch(&desc->state, desc->buf,
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POLY1305_BLOCK_SIZE, 0);
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else
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poly1305_blocks_generic(&desc->state, desc->buf,
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POLY1305_BLOCK_SIZE, 0);
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}
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if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
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poly1305_emit_arch(&desc->state.h, dst, desc->s);
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else
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poly1305_emit_generic(&desc->state.h, dst, desc->s);
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*desc = (struct poly1305_desc_ctx){};
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}
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EXPORT_SYMBOL(poly1305_final);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Martin Willi <martin@strongswan.org>");
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MODULE_DESCRIPTION("Poly1305 authenticator algorithm, RFC7539");
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