Merge tag 'timers-core-2021-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / include / crypto / sm4.h

diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h
index 7afd730..709f286 100644 (file)
--- a/include/crypto/sm4.h
+++ b/include/crypto/sm4.h
@@ -3,6 +3,7 @@
 /*
  * Common values for the SM4 algorithm
  * Copyright (C) 2018 ARM Limited or its affiliates.
+ * Copyright (c) 2021 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
  */
 
 #ifndef _CRYPTO_SM4_H
@@ -15,17 +16,29 @@
 #define SM4_BLOCK_SIZE 16
 #define SM4_RKEY_WORDS 32
 
-struct crypto_sm4_ctx {
+struct 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,
+/**
+ * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016
+ * @ctx:       The location where the computed key will be stored.
+ * @in_key:    The supplied key.
+ * @key_len:   The length of the supplied key.
+ *
+ * Returns 0 on success. The function fails only if an invalid key size (or
+ * pointer) is supplied.
+ */
+int sm4_expandkey(struct sm4_ctx *ctx, const u8 *in_key,
                          unsigned int key_len);
 
-void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
-void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
+/**
+ * sm4_crypt_block - Encrypt or decrypt a single SM4 block
+ * @rk:                The rkey_enc for encrypt or rkey_dec for decrypt
+ * @out:       Buffer to store output data
+ * @in:        Buffer containing the input data
+ */
+void sm4_crypt_block(const u32 *rk, u8 *out, const u8 *in);
 
 #endif