include/crypto/des.h

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

File Facts

System
Linux kernel
Corpus path
include/crypto/des.h
Extension
.h
Size
1732 bytes
Lines
58
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 des_ctx {
	u32 expkey[DES_EXPKEY_WORDS];
};

struct des3_ede_ctx {
	u32 expkey[DES3_EDE_EXPKEY_WORDS];
};

void des_encrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src);
void des_decrypt(const struct des_ctx *ctx, u8 *dst, const u8 *src);

void des3_ede_encrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src);
void des3_ede_decrypt(const struct des3_ede_ctx *dctx, u8 *dst, const u8 *src);

/**
 * des_expand_key - Expand a DES input key into a key schedule
 * @ctx: the key schedule
 * @key: buffer containing the input key
 * @keylen: size of the buffer contents
 *
 * Returns: 0 on success, -EINVAL if the input key is rejected and -ENOKEY if
 * the key is accepted but has been found to be weak.
 */
int des_expand_key(struct des_ctx *ctx, const u8 *key, unsigned int keylen);

/**
 * des3_ede_expand_key - Expand a triple DES input key into a key schedule
 * @ctx: the key schedule
 * @key: buffer containing the input key
 * @keylen: size of the buffer contents
 *
 * Returns: 0 on success, -EINVAL if the input key is rejected and -ENOKEY if
 * the key is accepted but has been found to be weak. Note that weak keys will
 * be rejected (and -EINVAL will be returned) when running in FIPS mode.
 */
int des3_ede_expand_key(struct des3_ede_ctx *ctx, const u8 *key,
			unsigned int keylen);

#endif /* __CRYPTO_DES_H */

Annotation

Implementation Notes