124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* The device /dev/cryptocop is accessible using this driver using
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* CRYPTOCOP_MAJOR (254) and minor number 0.
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*/
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#ifndef _UAPICRYPTOCOP_H
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#define _UAPICRYPTOCOP_H
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#include <linux/uio.h>
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#define CRYPTOCOP_SESSION_ID_NONE (0)
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typedef unsigned long long int cryptocop_session_id;
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/* cryptocop ioctls */
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#define ETRAXCRYPTOCOP_IOCTYPE (250)
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#define CRYPTOCOP_IO_CREATE_SESSION _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 1, struct strcop_session_op)
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#define CRYPTOCOP_IO_CLOSE_SESSION _IOW(ETRAXCRYPTOCOP_IOCTYPE, 2, struct strcop_session_op)
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#define CRYPTOCOP_IO_PROCESS_OP _IOWR(ETRAXCRYPTOCOP_IOCTYPE, 3, struct strcop_crypto_op)
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#define CRYPTOCOP_IO_MAXNR (3)
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typedef enum {
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cryptocop_cipher_des = 0,
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cryptocop_cipher_3des = 1,
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cryptocop_cipher_aes = 2,
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cryptocop_cipher_m2m = 3, /* mem2mem is essentially a NULL cipher with blocklength=1 */
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cryptocop_cipher_none
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} cryptocop_cipher_type;
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typedef enum {
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cryptocop_digest_sha1 = 0,
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cryptocop_digest_md5 = 1,
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cryptocop_digest_none
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} cryptocop_digest_type;
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typedef enum {
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cryptocop_csum_le = 0,
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cryptocop_csum_be = 1,
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cryptocop_csum_none
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} cryptocop_csum_type;
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typedef enum {
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cryptocop_cipher_mode_ecb = 0,
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cryptocop_cipher_mode_cbc,
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cryptocop_cipher_mode_none
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} cryptocop_cipher_mode;
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typedef enum {
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cryptocop_3des_eee = 0,
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cryptocop_3des_eed = 1,
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cryptocop_3des_ede = 2,
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cryptocop_3des_edd = 3,
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cryptocop_3des_dee = 4,
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cryptocop_3des_ded = 5,
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cryptocop_3des_dde = 6,
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cryptocop_3des_ddd = 7
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} cryptocop_3des_mode;
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/* Usermode accessible (ioctl) operations. */
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struct strcop_session_op{
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cryptocop_session_id ses_id;
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cryptocop_cipher_type cipher; /* AES, DES, 3DES, m2m, none */
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cryptocop_cipher_mode cmode; /* ECB, CBC, none */
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cryptocop_3des_mode des3_mode;
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cryptocop_digest_type digest; /* MD5, SHA1, none */
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cryptocop_csum_type csum; /* BE, LE, none */
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unsigned char *key;
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size_t keylen;
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};
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#define CRYPTOCOP_CSUM_LENGTH (2)
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#define CRYPTOCOP_MAX_DIGEST_LENGTH (20) /* SHA-1 20, MD5 16 */
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#define CRYPTOCOP_MAX_IV_LENGTH (16) /* (3)DES==8, AES == 16 */
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#define CRYPTOCOP_MAX_KEY_LENGTH (32)
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struct strcop_crypto_op{
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cryptocop_session_id ses_id;
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/* Indata. */
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unsigned char *indata;
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size_t inlen; /* Total indata length. */
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/* Cipher configuration. */
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unsigned char do_cipher:1;
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unsigned char decrypt:1; /* 1 == decrypt, 0 == encrypt */
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unsigned char cipher_explicit:1;
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size_t cipher_start;
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size_t cipher_len;
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/* cipher_iv is used if do_cipher and cipher_explicit and the cipher
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mode is CBC. The length is controlled by the type of cipher,
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e.g. DES/3DES 8 octets and AES 16 octets. */
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unsigned char cipher_iv[CRYPTOCOP_MAX_IV_LENGTH];
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/* Outdata. */
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unsigned char *cipher_outdata;
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size_t cipher_outlen;
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/* digest configuration. */
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unsigned char do_digest:1;
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size_t digest_start;
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size_t digest_len;
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/* Outdata. The actual length is determined by the type of the digest. */
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unsigned char digest[CRYPTOCOP_MAX_DIGEST_LENGTH];
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/* Checksum configuration. */
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unsigned char do_csum:1;
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size_t csum_start;
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size_t csum_len;
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/* Outdata. */
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unsigned char csum[CRYPTOCOP_CSUM_LENGTH];
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};
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#endif /* _UAPICRYPTOCOP_H */
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