1 /* 2 * The device /dev/cryptocop is accessible using this driver using 3 * CRYPTOCOP_MAJOR (254) and minor number 0. 4 */ 5 6 #ifndef _UAPICRYPTOCOP_H 7 #define _UAPICRYPTOCOP_H 8 9 #include <linux/uio.h> 10 11 12 #define CRYPTOCOP_SESSION_ID_NONE (0) 13 14 typedef unsigned long long int cryptocop_session_id; 15 16 /* cryptocop ioctls */ 17 #define ETRAXCRYPTOCOP_IOCTYPE (250) 18 19 #define CRYPTOCOP_IO_CREATE_SESSION _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 1, struct strcop_session_op) 20 #define CRYPTOCOP_IO_CLOSE_SESSION _IOW(ETRAXCRYPTOCOP_IOCTYPE, 2, struct strcop_session_op) 21 #define CRYPTOCOP_IO_PROCESS_OP _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 3, struct strcop_crypto_op) 22 #define CRYPTOCOP_IO_MAXNR (3) 23 24 typedef enum { 25 cryptocop_cipher_des = 0, 26 cryptocop_cipher_3des = 1, 27 cryptocop_cipher_aes = 2, 28 cryptocop_cipher_m2m = 3, /* mem2mem is essentially a NULL cipher with blocklength=1 */ 29 cryptocop_cipher_none 30 } cryptocop_cipher_type; 31 32 typedef enum { 33 cryptocop_digest_sha1 = 0, 34 cryptocop_digest_md5 = 1, 35 cryptocop_digest_none 36 } cryptocop_digest_type; 37 38 typedef enum { 39 cryptocop_csum_le = 0, 40 cryptocop_csum_be = 1, 41 cryptocop_csum_none 42 } cryptocop_csum_type; 43 44 typedef enum { 45 cryptocop_cipher_mode_ecb = 0, 46 cryptocop_cipher_mode_cbc, 47 cryptocop_cipher_mode_none 48 } cryptocop_cipher_mode; 49 50 typedef enum { 51 cryptocop_3des_eee = 0, 52 cryptocop_3des_eed = 1, 53 cryptocop_3des_ede = 2, 54 cryptocop_3des_edd = 3, 55 cryptocop_3des_dee = 4, 56 cryptocop_3des_ded = 5, 57 cryptocop_3des_dde = 6, 58 cryptocop_3des_ddd = 7 59 } cryptocop_3des_mode; 60 61 /* Usermode accessible (ioctl) operations. */ 62 struct strcop_session_op{ 63 cryptocop_session_id ses_id; 64 65 cryptocop_cipher_type cipher; /* AES, DES, 3DES, m2m, none */ 66 67 cryptocop_cipher_mode cmode; /* ECB, CBC, none */ 68 cryptocop_3des_mode des3_mode; 69 70 cryptocop_digest_type digest; /* MD5, SHA1, none */ 71 72 cryptocop_csum_type csum; /* BE, LE, none */ 73 74 unsigned char *key; 75 size_t keylen; 76 }; 77 78 #define CRYPTOCOP_CSUM_LENGTH (2) 79 #define CRYPTOCOP_MAX_DIGEST_LENGTH (20) /* SHA-1 20, MD5 16 */ 80 #define CRYPTOCOP_MAX_IV_LENGTH (16) /* (3)DES==8, AES == 16 */ 81 #define CRYPTOCOP_MAX_KEY_LENGTH (32) 82 83 struct strcop_crypto_op{ 84 cryptocop_session_id ses_id; 85 86 /* Indata. */ 87 unsigned char *indata; 88 size_t inlen; /* Total indata length. */ 89 90 /* Cipher configuration. */ 91 unsigned char do_cipher:1; 92 unsigned char decrypt:1; /* 1 == decrypt, 0 == encrypt */ 93 unsigned char cipher_explicit:1; 94 size_t cipher_start; 95 size_t cipher_len; 96 /* cipher_iv is used if do_cipher and cipher_explicit and the cipher 97 mode is CBC. The length is controlled by the type of cipher, 98 e.g. DES/3DES 8 octets and AES 16 octets. */ 99 unsigned char cipher_iv[CRYPTOCOP_MAX_IV_LENGTH]; 100 /* Outdata. */ 101 unsigned char *cipher_outdata; 102 size_t cipher_outlen; 103 104 /* digest configuration. */ 105 unsigned char do_digest:1; 106 size_t digest_start; 107 size_t digest_len; 108 /* Outdata. The actual length is determined by the type of the digest. */ 109 unsigned char digest[CRYPTOCOP_MAX_DIGEST_LENGTH]; 110 111 /* Checksum configuration. */ 112 unsigned char do_csum:1; 113 size_t csum_start; 114 size_t csum_len; 115 /* Outdata. */ 116 unsigned char csum[CRYPTOCOP_CSUM_LENGTH]; 117 }; 118 119 120 121 122 #endif /* _UAPICRYPTOCOP_H */ 123