diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch b/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch deleted file mode 100644 index d909561690..0000000000 --- a/target/linux/generic/backport-5.4/080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch +++ /dev/null @@ -1,136 +0,0 @@ -From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 -From: Ard Biesheuvel <ardb@kernel.org> -Date: Fri, 8 Nov 2019 13:22:34 +0100 -Subject: [PATCH] crypto: curve25519 - implement generic KPP driver - -commit ee772cb641135739c1530647391d5a04c39db192 upstream. - -Expose the generic Curve25519 library via the crypto API KPP interface. - -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/Kconfig | 5 +++ - crypto/Makefile | 1 + - crypto/curve25519-generic.c | 90 +++++++++++++++++++++++++++++++++++++ - 3 files changed, 96 insertions(+) - create mode 100644 crypto/curve25519-generic.c - ---- a/crypto/Kconfig -+++ b/crypto/Kconfig -@@ -264,6 +264,11 @@ config CRYPTO_ECRDSA - standard algorithms (called GOST algorithms). Only signature verification - is implemented. - -+config CRYPTO_CURVE25519 -+ tristate "Curve25519 algorithm" -+ select CRYPTO_KPP -+ select CRYPTO_LIB_CURVE25519_GENERIC -+ - comment "Authenticated Encryption with Associated Data" - - config CRYPTO_CCM ---- a/crypto/Makefile -+++ b/crypto/Makefile -@@ -167,6 +167,7 @@ obj-$(CONFIG_CRYPTO_ZSTD) += zstd.o - obj-$(CONFIG_CRYPTO_OFB) += ofb.o - obj-$(CONFIG_CRYPTO_ECC) += ecc.o - obj-$(CONFIG_CRYPTO_ESSIV) += essiv.o -+obj-$(CONFIG_CRYPTO_CURVE25519) += curve25519-generic.o - - ecdh_generic-y += ecdh.o - ecdh_generic-y += ecdh_helper.o ---- /dev/null -+++ b/crypto/curve25519-generic.c -@@ -0,0 +1,90 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+ -+#include <crypto/curve25519.h> -+#include <crypto/internal/kpp.h> -+#include <crypto/kpp.h> -+#include <linux/module.h> -+#include <linux/scatterlist.h> -+ -+static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf, -+ unsigned int len) -+{ -+ u8 *secret = kpp_tfm_ctx(tfm); -+ -+ if (!len) -+ curve25519_generate_secret(secret); -+ else if (len == CURVE25519_KEY_SIZE && -+ crypto_memneq(buf, curve25519_null_point, CURVE25519_KEY_SIZE)) -+ memcpy(secret, buf, CURVE25519_KEY_SIZE); -+ else -+ return -EINVAL; -+ return 0; -+} -+ -+static int curve25519_compute_value(struct kpp_request *req) -+{ -+ struct crypto_kpp *tfm = crypto_kpp_reqtfm(req); -+ const u8 *secret = kpp_tfm_ctx(tfm); -+ u8 public_key[CURVE25519_KEY_SIZE]; -+ u8 buf[CURVE25519_KEY_SIZE]; -+ int copied, nbytes; -+ u8 const *bp; -+ -+ if (req->src) { -+ copied = sg_copy_to_buffer(req->src, -+ sg_nents_for_len(req->src, -+ CURVE25519_KEY_SIZE), -+ public_key, CURVE25519_KEY_SIZE); -+ if (copied != CURVE25519_KEY_SIZE) -+ return -EINVAL; -+ bp = public_key; -+ } else { -+ bp = curve25519_base_point; -+ } -+ -+ curve25519_generic(buf, secret, bp); -+ -+ /* might want less than we've got */ -+ nbytes = min_t(size_t, CURVE25519_KEY_SIZE, req->dst_len); -+ copied = sg_copy_from_buffer(req->dst, sg_nents_for_len(req->dst, -+ nbytes), -+ buf, nbytes); -+ if (copied != nbytes) -+ return -EINVAL; -+ return 0; -+} -+ -+static unsigned int curve25519_max_size(struct crypto_kpp *tfm) -+{ -+ return CURVE25519_KEY_SIZE; -+} -+ -+static struct kpp_alg curve25519_alg = { -+ .base.cra_name = "curve25519", -+ .base.cra_driver_name = "curve25519-generic", -+ .base.cra_priority = 100, -+ .base.cra_module = THIS_MODULE, -+ .base.cra_ctxsize = CURVE25519_KEY_SIZE, -+ -+ .set_secret = curve25519_set_secret, -+ .generate_public_key = curve25519_compute_value, -+ .compute_shared_secret = curve25519_compute_value, -+ .max_size = curve25519_max_size, -+}; -+ -+static int curve25519_init(void) -+{ -+ return crypto_register_kpp(&curve25519_alg); -+} -+ -+static void curve25519_exit(void) -+{ -+ crypto_unregister_kpp(&curve25519_alg); -+} -+ -+subsys_initcall(curve25519_init); -+module_exit(curve25519_exit); -+ -+MODULE_ALIAS_CRYPTO("curve25519"); -+MODULE_ALIAS_CRYPTO("curve25519-generic"); -+MODULE_LICENSE("GPL"); |