kernel: delete Linux 5.4 config and patches

[openwrt/openwrt.git] / target / linux / generic / backport-5.4 / 080-wireguard-0027-crypto-curve25519-implement-generic-KPP-driver.patch

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 (file)
index d909561..0000000
--- 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");