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-rw-r--r--target/linux/generic/backport-5.4/080-wireguard-0015-crypto-poly1305-expose-init-update-final-library-int.patch224
1 files changed, 0 insertions, 224 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0015-crypto-poly1305-expose-init-update-final-library-int.patch b/target/linux/generic/backport-5.4/080-wireguard-0015-crypto-poly1305-expose-init-update-final-library-int.patch
deleted file mode 100644
index bf8e90bf02..0000000000
--- a/target/linux/generic/backport-5.4/080-wireguard-0015-crypto-poly1305-expose-init-update-final-library-int.patch
+++ /dev/null
@@ -1,224 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Ard Biesheuvel <ardb@kernel.org>
-Date: Fri, 8 Nov 2019 13:22:21 +0100
-Subject: [PATCH] crypto: poly1305 - expose init/update/final library interface
-
-commit a1d93064094cc5e24d64e35cf093e7191d0c9344 upstream.
-
-Expose the existing generic Poly1305 code via a init/update/final
-library interface so that callers are not required to go through
-the crypto API's shash abstraction to access it. At the same time,
-make some preparations so that the library implementation can be
-superseded by an accelerated arch-specific version in the future.
-
-Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
-Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
-Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
----
- crypto/poly1305_generic.c | 22 +-----------
- include/crypto/poly1305.h | 38 +++++++++++++++++++-
- lib/crypto/Kconfig | 26 ++++++++++++++
- lib/crypto/poly1305.c | 74 +++++++++++++++++++++++++++++++++++++++
- 4 files changed, 138 insertions(+), 22 deletions(-)
-
---- a/crypto/poly1305_generic.c
-+++ b/crypto/poly1305_generic.c
-@@ -85,31 +85,11 @@ EXPORT_SYMBOL_GPL(crypto_poly1305_update
- int crypto_poly1305_final(struct shash_desc *desc, u8 *dst)
- {
- struct poly1305_desc_ctx *dctx = shash_desc_ctx(desc);
-- __le32 digest[4];
-- u64 f = 0;
-
- if (unlikely(!dctx->sset))
- return -ENOKEY;
-
-- if (unlikely(dctx->buflen)) {
-- dctx->buf[dctx->buflen++] = 1;
-- memset(dctx->buf + dctx->buflen, 0,
-- POLY1305_BLOCK_SIZE - dctx->buflen);
-- poly1305_core_blocks(&dctx->h, dctx->r, dctx->buf, 1, 0);
-- }
--
-- poly1305_core_emit(&dctx->h, digest);
--
-- /* mac = (h + s) % (2^128) */
-- f = (f >> 32) + le32_to_cpu(digest[0]) + dctx->s[0];
-- put_unaligned_le32(f, dst + 0);
-- f = (f >> 32) + le32_to_cpu(digest[1]) + dctx->s[1];
-- put_unaligned_le32(f, dst + 4);
-- f = (f >> 32) + le32_to_cpu(digest[2]) + dctx->s[2];
-- put_unaligned_le32(f, dst + 8);
-- f = (f >> 32) + le32_to_cpu(digest[3]) + dctx->s[3];
-- put_unaligned_le32(f, dst + 12);
--
-+ poly1305_final_generic(dctx, dst);
- return 0;
- }
- EXPORT_SYMBOL_GPL(crypto_poly1305_final);
---- a/include/crypto/poly1305.h
-+++ b/include/crypto/poly1305.h
-@@ -35,7 +35,43 @@ struct poly1305_desc_ctx {
- /* accumulator */
- struct poly1305_state h;
- /* key */
-- struct poly1305_key r[1];
-+ struct poly1305_key r[CONFIG_CRYPTO_LIB_POLY1305_RSIZE];
- };
-
-+void poly1305_init_arch(struct poly1305_desc_ctx *desc, const u8 *key);
-+void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key);
-+
-+static inline void poly1305_init(struct poly1305_desc_ctx *desc, const u8 *key)
-+{
-+ if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
-+ poly1305_init_arch(desc, key);
-+ else
-+ poly1305_init_generic(desc, key);
-+}
-+
-+void poly1305_update_arch(struct poly1305_desc_ctx *desc, const u8 *src,
-+ unsigned int nbytes);
-+void poly1305_update_generic(struct poly1305_desc_ctx *desc, const u8 *src,
-+ unsigned int nbytes);
-+
-+static inline void poly1305_update(struct poly1305_desc_ctx *desc,
-+ const u8 *src, unsigned int nbytes)
-+{
-+ if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
-+ poly1305_update_arch(desc, src, nbytes);
-+ else
-+ poly1305_update_generic(desc, src, nbytes);
-+}
-+
-+void poly1305_final_arch(struct poly1305_desc_ctx *desc, u8 *digest);
-+void poly1305_final_generic(struct poly1305_desc_ctx *desc, u8 *digest);
-+
-+static inline void poly1305_final(struct poly1305_desc_ctx *desc, u8 *digest)
-+{
-+ if (IS_ENABLED(CONFIG_CRYPTO_ARCH_HAVE_LIB_POLY1305))
-+ poly1305_final_arch(desc, digest);
-+ else
-+ poly1305_final_generic(desc, digest);
-+}
-+
- #endif
---- a/lib/crypto/Kconfig
-+++ b/lib/crypto/Kconfig
-@@ -37,8 +37,34 @@ config CRYPTO_LIB_CHACHA
- config CRYPTO_LIB_DES
- tristate
-
-+config CRYPTO_LIB_POLY1305_RSIZE
-+ int
-+ default 1
-+
-+config CRYPTO_ARCH_HAVE_LIB_POLY1305
-+ tristate
-+ help
-+ Declares whether the architecture provides an arch-specific
-+ accelerated implementation of the Poly1305 library interface,
-+ either builtin or as a module.
-+
- config CRYPTO_LIB_POLY1305_GENERIC
- tristate
-+ help
-+ This symbol can be depended upon by arch implementations of the
-+ Poly1305 library interface that require the generic code as a
-+ fallback, e.g., for SIMD implementations. If no arch specific
-+ implementation is enabled, this implementation serves the users
-+ of CRYPTO_LIB_POLY1305.
-+
-+config CRYPTO_LIB_POLY1305
-+ tristate "Poly1305 library interface"
-+ depends on CRYPTO_ARCH_HAVE_LIB_POLY1305 || !CRYPTO_ARCH_HAVE_LIB_POLY1305
-+ select CRYPTO_LIB_POLY1305_GENERIC if CRYPTO_ARCH_HAVE_LIB_POLY1305=n
-+ help
-+ Enable the Poly1305 library interface. This interface may be fulfilled
-+ by either the generic implementation or an arch-specific one, if one
-+ is available and enabled.
-
- config CRYPTO_LIB_SHA256
- tristate
---- a/lib/crypto/poly1305.c
-+++ b/lib/crypto/poly1305.c
-@@ -154,5 +154,79 @@ void poly1305_core_emit(const struct pol
- }
- EXPORT_SYMBOL_GPL(poly1305_core_emit);
-
-+void poly1305_init_generic(struct poly1305_desc_ctx *desc, const u8 *key)
-+{
-+ poly1305_core_setkey(desc->r, key);
-+ desc->s[0] = get_unaligned_le32(key + 16);
-+ desc->s[1] = get_unaligned_le32(key + 20);
-+ desc->s[2] = get_unaligned_le32(key + 24);
-+ desc->s[3] = get_unaligned_le32(key + 28);
-+ poly1305_core_init(&desc->h);
-+ desc->buflen = 0;
-+ desc->sset = true;
-+ desc->rset = 1;
-+}
-+EXPORT_SYMBOL_GPL(poly1305_init_generic);
-+
-+void poly1305_update_generic(struct poly1305_desc_ctx *desc, const u8 *src,
-+ unsigned int nbytes)
-+{
-+ unsigned int bytes;
-+
-+ if (unlikely(desc->buflen)) {
-+ bytes = min(nbytes, POLY1305_BLOCK_SIZE - desc->buflen);
-+ memcpy(desc->buf + desc->buflen, src, bytes);
-+ src += bytes;
-+ nbytes -= bytes;
-+ desc->buflen += bytes;
-+
-+ if (desc->buflen == POLY1305_BLOCK_SIZE) {
-+ poly1305_core_blocks(&desc->h, desc->r, desc->buf, 1, 1);
-+ desc->buflen = 0;
-+ }
-+ }
-+
-+ if (likely(nbytes >= POLY1305_BLOCK_SIZE)) {
-+ poly1305_core_blocks(&desc->h, desc->r, src,
-+ nbytes / POLY1305_BLOCK_SIZE, 1);
-+ src += nbytes - (nbytes % POLY1305_BLOCK_SIZE);
-+ nbytes %= POLY1305_BLOCK_SIZE;
-+ }
-+
-+ if (unlikely(nbytes)) {
-+ desc->buflen = nbytes;
-+ memcpy(desc->buf, src, nbytes);
-+ }
-+}
-+EXPORT_SYMBOL_GPL(poly1305_update_generic);
-+
-+void poly1305_final_generic(struct poly1305_desc_ctx *desc, u8 *dst)
-+{
-+ __le32 digest[4];
-+ u64 f = 0;
-+
-+ if (unlikely(desc->buflen)) {
-+ desc->buf[desc->buflen++] = 1;
-+ memset(desc->buf + desc->buflen, 0,
-+ POLY1305_BLOCK_SIZE - desc->buflen);
-+ poly1305_core_blocks(&desc->h, desc->r, desc->buf, 1, 0);
-+ }
-+
-+ poly1305_core_emit(&desc->h, digest);
-+
-+ /* mac = (h + s) % (2^128) */
-+ f = (f >> 32) + le32_to_cpu(digest[0]) + desc->s[0];
-+ put_unaligned_le32(f, dst + 0);
-+ f = (f >> 32) + le32_to_cpu(digest[1]) + desc->s[1];
-+ put_unaligned_le32(f, dst + 4);
-+ f = (f >> 32) + le32_to_cpu(digest[2]) + desc->s[2];
-+ put_unaligned_le32(f, dst + 8);
-+ f = (f >> 32) + le32_to_cpu(digest[3]) + desc->s[3];
-+ put_unaligned_le32(f, dst + 12);
-+
-+ *desc = (struct poly1305_desc_ctx){};
-+}
-+EXPORT_SYMBOL_GPL(poly1305_final_generic);
-+
- MODULE_LICENSE("GPL");
- MODULE_AUTHOR("Martin Willi <martin@strongswan.org>");
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 07:18:55 +0000