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authorGilad Ben-Yossef <gilad@benyossef.com>2018-03-06 09:44:42 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2018-03-16 23:35:48 +0800
commit747c8ce4e710cf2d72d115f84b2d0d6f4aa504b4 (patch)
tree5982ec8882440954bdbe3a602ef967c1291d5581 /include/crypto
parent5110e65536f35e854f5d520b913505dbdbe22787 (diff)
crypto: sm4 - introduce SM4 symmetric cipher algorithm
Introduce the SM4 cipher algorithms (OSCCA GB/T 32907-2016). SM4 (GBT.32907-2016) is a cryptographic standard issued by the Organization of State Commercial Administration of China (OSCCA) as an authorized cryptographic algorithms for the use within China. SMS4 was originally created for use in protecting wireless networks, and is mandated in the Chinese National Standard for Wireless LAN WAPI (Wired Authentication and Privacy Infrastructure) (GB.15629.11-2003). Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/sm4.h28
1 files changed, 28 insertions, 0 deletions
diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h
new file mode 100644
index 000000000000..b64e64d20b28
--- /dev/null
+++ b/include/crypto/sm4.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/*
+ * Common values for the SM4 algorithm
+ * Copyright (C) 2018 ARM Limited or its affiliates.
+ */
+
+#ifndef _CRYPTO_SM4_H
+#define _CRYPTO_SM4_H
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+
+#define SM4_KEY_SIZE 16
+#define SM4_BLOCK_SIZE 16
+#define SM4_RKEY_WORDS 32
+
+struct crypto_sm4_ctx {
+ u32 rkey_enc[SM4_RKEY_WORDS];
+ u32 rkey_dec[SM4_RKEY_WORDS];
+};
+
+int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+ unsigned int key_len);
+int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
+ unsigned int key_len);
+
+#endif