include/crypto/sm4.h

Source file repositories/reference/linux-study-clean/include/crypto/sm4.h

File Facts

System
Linux kernel
Corpus path
include/crypto/sm4.h
Extension
.h
Size
1248 bytes
Lines
49
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

struct sm4_ctx {
	u32 rkey_enc[SM4_RKEY_WORDS];
	u32 rkey_dec[SM4_RKEY_WORDS];
};

extern const u32 crypto_sm4_fk[];
extern const u32 crypto_sm4_ck[];
extern const u8 crypto_sm4_sbox[];

/**
 * 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);

/**
 * 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

Annotation

Implementation Notes