crypto: morus - Add generic MORUS AEAD implementations

This patch adds the generic implementation of the MORUS family of AEAD
algorithms (MORUS-640 and MORUS-1280). The original authors of MORUS
are Hongjun Wu and Tao Huang.

At the time of writing, MORUS is one of the finalists in CAESAR, an
open competition intended to select a portfolio of alternatives to
the problematic AES-GCM:

https://competitions.cr.yp.to/caesar-submissions.html
https://competitions.cr.yp.to/round3/morusv2.pdfSigned-off-by: Ondrej Mosnacek <omosnacek@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Kconfig

@@ -334,6 +334,18 @@ config CRYPTO_AEGIS256_AESNI_SSE2
 	help
 	 AESNI+SSE2 implementation of the AEGSI-256 dedicated AEAD algorithm.
 
+config CRYPTO_MORUS640
+	tristate "MORUS-640 AEAD algorithm"
+	select CRYPTO_AEAD
+	help
+	  Support for the MORUS-640 dedicated AEAD algorithm.
+
+config CRYPTO_MORUS1280
+	tristate "MORUS-1280 AEAD algorithm"
+	select CRYPTO_AEAD
+	help
+	  Support for the MORUS-1280 dedicated AEAD algorithm.
+
 config CRYPTO_SEQIV
 	tristate "Sequence Number IV Generator"
 	select CRYPTO_AEAD

crypto/Makefile

@@ -89,6 +89,8 @@ obj-$(CONFIG_CRYPTO_CHACHA20POLY1305) += chacha20poly1305.o
 obj-$(CONFIG_CRYPTO_AEGIS128) += aegis128.o
 obj-$(CONFIG_CRYPTO_AEGIS128L) += aegis128l.o
 obj-$(CONFIG_CRYPTO_AEGIS256) += aegis256.o
+obj-$(CONFIG_CRYPTO_MORUS640) += morus640.o
+obj-$(CONFIG_CRYPTO_MORUS1280) += morus1280.o
 obj-$(CONFIG_CRYPTO_PCRYPT) += pcrypt.o
 obj-$(CONFIG_CRYPTO_CRYPTD) += cryptd.o
 obj-$(CONFIG_CRYPTO_MCRYPTD) += mcryptd.o

include/crypto/morus_common.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * The MORUS Authenticated-Encryption Algorithm
+ *   Common definitions
+ *
+ * Copyright (c) 2016-2018 Ondrej Mosnacek <omosnacek@gmail.com>
+ * Copyright (C) 2017-2018 Red Hat, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#ifndef _CRYPTO_MORUS_COMMON_H
+#define _CRYPTO_MORUS_COMMON_H
+
+#define MORUS_BLOCK_WORDS 4
+#define MORUS_STATE_BLOCKS 5
+#define MORUS_NONCE_SIZE 16
+#define MORUS_MAX_AUTH_SIZE 16
+
+#endif /* _CRYPTO_MORUS_COMMON_H */