mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
293 lines
8.9 KiB
C
293 lines
8.9 KiB
C
/* This is a source compatible implementation with the original API of
|
|
* cryptodev by Angelos D. Keromytis, found at openbsd cryptodev.h.
|
|
* Placed under public domain */
|
|
|
|
#ifndef L_CRYPTODEV_H
|
|
#define L_CRYPTODEV_H
|
|
|
|
#include <linux/types.h>
|
|
#ifndef __KERNEL__
|
|
#define __user
|
|
#endif
|
|
|
|
/* API extensions for linux */
|
|
#define CRYPTO_HMAC_MAX_KEY_LEN 512
|
|
#define CRYPTO_CIPHER_MAX_KEY_LEN 64
|
|
|
|
/* All the supported algorithms
|
|
*/
|
|
enum cryptodev_crypto_op_t {
|
|
CRYPTO_DES_CBC = 1,
|
|
CRYPTO_3DES_CBC = 2,
|
|
CRYPTO_BLF_CBC = 3,
|
|
CRYPTO_CAST_CBC = 4,
|
|
CRYPTO_SKIPJACK_CBC = 5,
|
|
CRYPTO_MD5_HMAC = 6,
|
|
CRYPTO_SHA1_HMAC = 7,
|
|
CRYPTO_RIPEMD160_HMAC = 8,
|
|
CRYPTO_MD5_KPDK = 9,
|
|
CRYPTO_SHA1_KPDK = 10,
|
|
CRYPTO_RIJNDAEL128_CBC = 11,
|
|
CRYPTO_AES_CBC = CRYPTO_RIJNDAEL128_CBC,
|
|
CRYPTO_ARC4 = 12,
|
|
CRYPTO_MD5 = 13,
|
|
CRYPTO_SHA1 = 14,
|
|
CRYPTO_DEFLATE_COMP = 15,
|
|
CRYPTO_NULL = 16,
|
|
CRYPTO_LZS_COMP = 17,
|
|
CRYPTO_SHA2_256_HMAC = 18,
|
|
CRYPTO_SHA2_384_HMAC = 19,
|
|
CRYPTO_SHA2_512_HMAC = 20,
|
|
CRYPTO_AES_CTR = 21,
|
|
CRYPTO_AES_XTS = 22,
|
|
CRYPTO_AES_ECB = 23,
|
|
CRYPTO_AES_GCM = 50,
|
|
|
|
CRYPTO_CAMELLIA_CBC = 101,
|
|
CRYPTO_RIPEMD160,
|
|
CRYPTO_SHA2_224,
|
|
CRYPTO_SHA2_256,
|
|
CRYPTO_SHA2_384,
|
|
CRYPTO_SHA2_512,
|
|
CRYPTO_SHA2_224_HMAC,
|
|
CRYPTO_ALGORITHM_ALL, /* Keep updated - see below */
|
|
};
|
|
|
|
#define CRYPTO_ALGORITHM_MAX (CRYPTO_ALGORITHM_ALL - 1)
|
|
|
|
/* Values for ciphers */
|
|
#define DES_BLOCK_LEN 8
|
|
#define DES3_BLOCK_LEN 8
|
|
#define RIJNDAEL128_BLOCK_LEN 16
|
|
#define AES_BLOCK_LEN RIJNDAEL128_BLOCK_LEN
|
|
#define CAMELLIA_BLOCK_LEN 16
|
|
#define BLOWFISH_BLOCK_LEN 8
|
|
#define SKIPJACK_BLOCK_LEN 8
|
|
#define CAST128_BLOCK_LEN 8
|
|
|
|
/* the maximum of the above */
|
|
#define EALG_MAX_BLOCK_LEN 16
|
|
|
|
/* Values for hashes/MAC */
|
|
#define AALG_MAX_RESULT_LEN 64
|
|
|
|
/* maximum length of verbose alg names (depends on CRYPTO_MAX_ALG_NAME) */
|
|
#define CRYPTODEV_MAX_ALG_NAME 64
|
|
|
|
#define HASH_MAX_LEN 64
|
|
|
|
/* input of CIOCGSESSION */
|
|
struct session_op {
|
|
/* Specify either cipher or mac
|
|
*/
|
|
__u32 cipher; /* cryptodev_crypto_op_t */
|
|
__u32 mac; /* cryptodev_crypto_op_t */
|
|
|
|
__u32 keylen;
|
|
__u8 __user *key;
|
|
__u32 mackeylen;
|
|
__u8 __user *mackey;
|
|
|
|
__u32 ses; /* session identifier */
|
|
};
|
|
|
|
struct session_info_op {
|
|
__u32 ses; /* session identifier */
|
|
|
|
/* verbose names for the requested ciphers */
|
|
struct alg_info {
|
|
char cra_name[CRYPTODEV_MAX_ALG_NAME];
|
|
char cra_driver_name[CRYPTODEV_MAX_ALG_NAME];
|
|
} cipher_info, hash_info;
|
|
|
|
__u16 alignmask; /* alignment constraints */
|
|
__u32 flags; /* SIOP_FLAGS_* */
|
|
};
|
|
|
|
/* If this flag is set then this algorithm uses
|
|
* a driver only available in kernel (software drivers,
|
|
* or drivers based on instruction sets do not set this flag).
|
|
*
|
|
* If multiple algorithms are involved (as in AEAD case), then
|
|
* if one of them is kernel-driver-only this flag will be set.
|
|
*/
|
|
#define SIOP_FLAG_KERNEL_DRIVER_ONLY 1
|
|
|
|
#define COP_ENCRYPT 0
|
|
#define COP_DECRYPT 1
|
|
|
|
/* input of CIOCCRYPT */
|
|
struct crypt_op {
|
|
__u32 ses; /* session identifier */
|
|
__u16 op; /* COP_ENCRYPT or COP_DECRYPT */
|
|
__u16 flags; /* see COP_FLAG_* */
|
|
__u32 len; /* length of source data */
|
|
__u8 __user *src; /* source data */
|
|
__u8 __user *dst; /* pointer to output data */
|
|
/* pointer to output data for hash/MAC operations */
|
|
__u8 __user *mac;
|
|
/* initialization vector for encryption operations */
|
|
__u8 __user *iv;
|
|
};
|
|
|
|
/* input of CIOCAUTHCRYPT */
|
|
struct crypt_auth_op {
|
|
__u32 ses; /* session identifier */
|
|
__u16 op; /* COP_ENCRYPT or COP_DECRYPT */
|
|
__u16 flags; /* see COP_FLAG_AEAD_* */
|
|
__u32 len; /* length of source data */
|
|
__u32 auth_len; /* length of auth data */
|
|
__u8 __user *auth_src; /* authenticated-only data */
|
|
|
|
/* The current implementation is more efficient if data are
|
|
* encrypted in-place (src==dst). */
|
|
__u8 __user *src; /* data to be encrypted and authenticated */
|
|
__u8 __user *dst; /* pointer to output data. Must have
|
|
* space for tag. For TLS this should be at least
|
|
* len + tag_size + block_size for padding */
|
|
|
|
__u8 __user *tag; /* where the tag will be copied to. TLS mode
|
|
* doesn't use that as tag is copied to dst.
|
|
* SRTP mode copies tag there. */
|
|
__u32 tag_len; /* the length of the tag. Use zero for digest size or max tag. */
|
|
|
|
/* initialization vector for encryption operations */
|
|
__u8 __user *iv;
|
|
__u32 iv_len;
|
|
};
|
|
|
|
/* In plain AEAD mode the following are required:
|
|
* flags : 0
|
|
* iv : the initialization vector (12 bytes)
|
|
* auth_len: the length of the data to be authenticated
|
|
* auth_src: the data to be authenticated
|
|
* len : length of data to be encrypted
|
|
* src : the data to be encrypted
|
|
* dst : space to hold encrypted data. It must have
|
|
* at least a size of len + tag_size.
|
|
* tag_size: the size of the desired authentication tag or zero to use
|
|
* the maximum tag output.
|
|
*
|
|
* Note tag isn't being used because the Linux AEAD interface
|
|
* copies the tag just after data.
|
|
*/
|
|
|
|
/* In TLS mode (used for CBC ciphers that required padding)
|
|
* the following are required:
|
|
* flags : COP_FLAG_AEAD_TLS_TYPE
|
|
* iv : the initialization vector
|
|
* auth_len: the length of the data to be authenticated only
|
|
* len : length of data to be encrypted
|
|
* auth_src: the data to be authenticated
|
|
* src : the data to be encrypted
|
|
* dst : space to hold encrypted data (preferably in-place). It must have
|
|
* at least a size of len + tag_size + blocksize.
|
|
* tag_size: the size of the desired authentication tag or zero to use
|
|
* the default mac output.
|
|
*
|
|
* Note that the padding used is the minimum padding.
|
|
*/
|
|
|
|
/* In SRTP mode the following are required:
|
|
* flags : COP_FLAG_AEAD_SRTP_TYPE
|
|
* iv : the initialization vector
|
|
* auth_len: the length of the data to be authenticated. This must
|
|
* include the SRTP header + SRTP payload (data to be encrypted) + rest
|
|
*
|
|
* len : length of data to be encrypted
|
|
* auth_src: pointer the data to be authenticated. Should point at the same buffer as src.
|
|
* src : pointer to the data to be encrypted.
|
|
* dst : This is mandatory to be the same as src (in-place only).
|
|
* tag_size: the size of the desired authentication tag or zero to use
|
|
* the default mac output.
|
|
* tag : Pointer to an address where the authentication tag will be copied.
|
|
*/
|
|
|
|
|
|
/* struct crypt_op flags */
|
|
|
|
#define COP_FLAG_NONE (0 << 0) /* totally no flag */
|
|
#define COP_FLAG_UPDATE (1 << 0) /* multi-update hash mode */
|
|
#define COP_FLAG_FINAL (1 << 1) /* multi-update final hash mode */
|
|
#define COP_FLAG_WRITE_IV (1 << 2) /* update the IV during operation */
|
|
#define COP_FLAG_NO_ZC (1 << 3) /* do not zero-copy */
|
|
#define COP_FLAG_AEAD_TLS_TYPE (1 << 4) /* authenticate and encrypt using the
|
|
* TLS protocol rules */
|
|
#define COP_FLAG_AEAD_SRTP_TYPE (1 << 5) /* authenticate and encrypt using the
|
|
* SRTP protocol rules */
|
|
#define COP_FLAG_RESET (1 << 6) /* multi-update reset the state.
|
|
* should be used in combination
|
|
* with COP_FLAG_UPDATE */
|
|
|
|
|
|
/* Stuff for bignum arithmetic and public key
|
|
* cryptography - not supported yet by linux
|
|
* cryptodev.
|
|
*/
|
|
|
|
#define CRYPTO_ALG_FLAG_SUPPORTED 1
|
|
#define CRYPTO_ALG_FLAG_RNG_ENABLE 2
|
|
#define CRYPTO_ALG_FLAG_DSA_SHA 4
|
|
|
|
struct crparam {
|
|
__u8 *crp_p;
|
|
__u32 crp_nbits;
|
|
};
|
|
|
|
#define CRK_MAXPARAM 8
|
|
|
|
/* input of CIOCKEY */
|
|
struct crypt_kop {
|
|
__u32 crk_op; /* cryptodev_crk_op_t */
|
|
__u32 crk_status;
|
|
__u16 crk_iparams;
|
|
__u16 crk_oparams;
|
|
__u32 crk_pad1;
|
|
struct crparam crk_param[CRK_MAXPARAM];
|
|
};
|
|
|
|
enum cryptodev_crk_op_t {
|
|
CRK_MOD_EXP = 0,
|
|
CRK_MOD_EXP_CRT = 1,
|
|
CRK_DSA_SIGN = 2,
|
|
CRK_DSA_VERIFY = 3,
|
|
CRK_DH_COMPUTE_KEY = 4,
|
|
CRK_ALGORITHM_ALL
|
|
};
|
|
|
|
#define CRK_ALGORITHM_MAX (CRK_ALGORITHM_ALL-1)
|
|
|
|
/* features to be queried with CIOCASYMFEAT ioctl
|
|
*/
|
|
#define CRF_MOD_EXP (1 << CRK_MOD_EXP)
|
|
#define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT)
|
|
#define CRF_DSA_SIGN (1 << CRK_DSA_SIGN)
|
|
#define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY)
|
|
#define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY)
|
|
|
|
|
|
/* ioctl's. Compatible with old linux cryptodev.h
|
|
*/
|
|
#define CRIOGET _IOWR('c', 101, __u32)
|
|
#define CIOCGSESSION _IOWR('c', 102, struct session_op)
|
|
#define CIOCFSESSION _IOW('c', 103, __u32)
|
|
#define CIOCCRYPT _IOWR('c', 104, struct crypt_op)
|
|
#define CIOCKEY _IOWR('c', 105, struct crypt_kop)
|
|
#define CIOCASYMFEAT _IOR('c', 106, __u32)
|
|
#define CIOCGSESSINFO _IOWR('c', 107, struct session_info_op)
|
|
|
|
/* to indicate that CRIOGET is not required in linux
|
|
*/
|
|
#define CRIOGET_NOT_NEEDED 1
|
|
|
|
/* additional ioctls for AEAD */
|
|
#define CIOCAUTHCRYPT _IOWR('c', 109, struct crypt_auth_op)
|
|
|
|
/* additional ioctls for asynchronous operation.
|
|
* These are conditionally enabled since version 1.6.
|
|
*/
|
|
#define CIOCASYNCCRYPT _IOW('c', 110, struct crypt_op)
|
|
#define CIOCASYNCFETCH _IOR('c', 111, struct crypt_op)
|
|
|
|
#endif /* L_CRYPTODEV_H */
|