Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto updates from Herbert Xu:
 "API:

   - crypto_destroy_tfm now ignores errors as well as NULL pointers

  Algorithms:

   - Add explicit curve IDs in ECDH algorithm names

   - Add NIST P384 curve parameters

   - Add ECDSA

  Drivers:

   - Add support for Green Sardine in ccp

   - Add ecdh/curve25519 to hisilicon/hpre

   - Add support for AM64 in sa2ul"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (184 commits)
  fsverity: relax build time dependency on CRYPTO_SHA256
  fscrypt: relax Kconfig dependencies for crypto API algorithms
  crypto: camellia - drop duplicate "depends on CRYPTO"
  crypto: s5p-sss - consistently use local 'dev' variable in probe()
  crypto: s5p-sss - remove unneeded local variable initialization
  crypto: s5p-sss - simplify getting of_device_id match data
  ccp: ccp - add support for Green Sardine
  crypto: ccp - Make ccp_dev_suspend and ccp_dev_resume void functions
  crypto: octeontx2 - add support for OcteonTX2 98xx CPT block.
  crypto: chelsio/chcr - Remove useless MODULE_VERSION
  crypto: ux500/cryp - Remove duplicate argument
  crypto: chelsio - remove unused function
  crypto: sa2ul - Add support for AM64
  crypto: sa2ul - Support for per channel coherency
  dt-bindings: crypto: ti,sa2ul: Add new compatible for AM64
  crypto: hisilicon - enable new error types for QM
  crypto: hisilicon - add new error type for SEC
  crypto: hisilicon - support new error types for ZIP
  crypto: hisilicon - dynamic configuration 'err_info'
  crypto: doc - fix kernel-doc notation in chacha.c and af_alg.c
  ...

1 files changed, 60 insertions, 0 deletions

diff --git a/include/crypto/ecc_curve.h b/include/crypto/ecc_curve.h
new file mode 100644
index 000000000000..70964781eb68
--- /dev/null
+++ b/include/crypto/ecc_curve.h
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2021 HiSilicon */
+
+#ifndef _CRYTO_ECC_CURVE_H
+#define _CRYTO_ECC_CURVE_H
+
+#include <linux/types.h>
+
+/**
+ * struct ecc_point - elliptic curve point in affine coordinates
+ *
+ * @x:		X coordinate in vli form.
+ * @y:		Y coordinate in vli form.
+ * @ndigits:	Length of vlis in u64 qwords.
+ */
+struct ecc_point {
+	u64 *x;
+	u64 *y;
+	u8 ndigits;
+};
+
+/**
+ * struct ecc_curve - definition of elliptic curve
+ *
+ * @name:	Short name of the curve.
+ * @g:		Generator point of the curve.
+ * @p:		Prime number, if Barrett's reduction is used for this curve
+ *		pre-calculated value 'mu' is appended to the @p after ndigits.
+ *		Use of Barrett's reduction is heuristically determined in
+ *		vli_mmod_fast().
+ * @n:		Order of the curve group.
+ * @a:		Curve parameter a.
+ * @b:		Curve parameter b.
+ */
+struct ecc_curve {
+	char *name;
+	struct ecc_point g;
+	u64 *p;
+	u64 *n;
+	u64 *a;
+	u64 *b;
+};
+
+/**
+ * ecc_get_curve() - get elliptic curve;
+ * @curve_id:           Curves IDs:
+ *                      defined in 'include/crypto/ecdh.h';
+ *
+ * Returns curve if get curve succssful, NULL otherwise
+ */
+const struct ecc_curve *ecc_get_curve(unsigned int curve_id);
+
+/**
+ * ecc_get_curve25519() - get curve25519 curve;
+ *
+ * Returns curve25519
+ */
+const struct ecc_curve *ecc_get_curve25519(void);
+
+#endif