1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3 * The device /dev/cryptocop is accessible using this driver using
4 * CRYPTOCOP_MAJOR (254) and minor number 0.
7 #ifndef _UAPICRYPTOCOP_H
8 #define _UAPICRYPTOCOP_H
10 #include <linux/uio.h>
13 #define CRYPTOCOP_SESSION_ID_NONE (0)
15 typedef unsigned long long int cryptocop_session_id;
17 /* cryptocop ioctls */
18 #define ETRAXCRYPTOCOP_IOCTYPE (250)
20 #define CRYPTOCOP_IO_CREATE_SESSION _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 1, struct strcop_session_op)
21 #define CRYPTOCOP_IO_CLOSE_SESSION _IOW(ETRAXCRYPTOCOP_IOCTYPE, 2, struct strcop_session_op)
22 #define CRYPTOCOP_IO_PROCESS_OP _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 3, struct strcop_crypto_op)
23 #define CRYPTOCOP_IO_MAXNR (3)
26 cryptocop_cipher_des = 0,
27 cryptocop_cipher_3des = 1,
28 cryptocop_cipher_aes = 2,
29 cryptocop_cipher_m2m = 3, /* mem2mem is essentially a NULL cipher with blocklength=1 */
31 } cryptocop_cipher_type;
34 cryptocop_digest_sha1 = 0,
35 cryptocop_digest_md5 = 1,
37 } cryptocop_digest_type;
40 cryptocop_csum_le = 0,
41 cryptocop_csum_be = 1,
43 } cryptocop_csum_type;
46 cryptocop_cipher_mode_ecb = 0,
47 cryptocop_cipher_mode_cbc,
48 cryptocop_cipher_mode_none
49 } cryptocop_cipher_mode;
52 cryptocop_3des_eee = 0,
53 cryptocop_3des_eed = 1,
54 cryptocop_3des_ede = 2,
55 cryptocop_3des_edd = 3,
56 cryptocop_3des_dee = 4,
57 cryptocop_3des_ded = 5,
58 cryptocop_3des_dde = 6,
59 cryptocop_3des_ddd = 7
60 } cryptocop_3des_mode;
62 /* Usermode accessible (ioctl) operations. */
63 struct strcop_session_op{
64 cryptocop_session_id ses_id;
66 cryptocop_cipher_type cipher; /* AES, DES, 3DES, m2m, none */
68 cryptocop_cipher_mode cmode; /* ECB, CBC, none */
69 cryptocop_3des_mode des3_mode;
71 cryptocop_digest_type digest; /* MD5, SHA1, none */
73 cryptocop_csum_type csum; /* BE, LE, none */
79 #define CRYPTOCOP_CSUM_LENGTH (2)
80 #define CRYPTOCOP_MAX_DIGEST_LENGTH (20) /* SHA-1 20, MD5 16 */
81 #define CRYPTOCOP_MAX_IV_LENGTH (16) /* (3)DES==8, AES == 16 */
82 #define CRYPTOCOP_MAX_KEY_LENGTH (32)
84 struct strcop_crypto_op{
85 cryptocop_session_id ses_id;
88 unsigned char *indata;
89 size_t inlen; /* Total indata length. */
91 /* Cipher configuration. */
92 unsigned char do_cipher:1;
93 unsigned char decrypt:1; /* 1 == decrypt, 0 == encrypt */
94 unsigned char cipher_explicit:1;
97 /* cipher_iv is used if do_cipher and cipher_explicit and the cipher
98 mode is CBC. The length is controlled by the type of cipher,
99 e.g. DES/3DES 8 octets and AES 16 octets. */
100 unsigned char cipher_iv[CRYPTOCOP_MAX_IV_LENGTH];
102 unsigned char *cipher_outdata;
103 size_t cipher_outlen;
105 /* digest configuration. */
106 unsigned char do_digest:1;
109 /* Outdata. The actual length is determined by the type of the digest. */
110 unsigned char digest[CRYPTOCOP_MAX_DIGEST_LENGTH];
112 /* Checksum configuration. */
113 unsigned char do_csum:1;
117 unsigned char csum[CRYPTOCOP_CSUM_LENGTH];
123 #endif /* _UAPICRYPTOCOP_H */