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16da9e7485
Linux driver for /dev/crypto (aka CryptoDev) See http://www.logix.cz/michal/devel/cryptodev for details. Signed-off-by: Michal Ludvig <mludvig@suse.cz> Signed-off-by: Rob Herring <r.herring@freescale.com>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*
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* Driver for /dev/crypto device (aka CryptoDev)
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*
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* Copyright (c) 2004 Michal Ludvig <mludvig@suse.cz>, SuSE Labs
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*
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* Structures and ioctl command names were taken from
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* OpenBSD to preserve compatibility with their API.
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*
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*/
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#ifndef _CRYPTODEV_H
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#define _CRYPTODEV_H
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#ifndef __KERNEL__
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#include <inttypes.h>
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#endif
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#define CRYPTODEV_MINOR MISC_DYNAMIC_MINOR
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#define CRYPTO_FLAG_ECB 0x0000
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#define CRYPTO_FLAG_CBC 0x0001
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#define CRYPTO_FLAG_CFB 0x0002
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#define CRYPTO_FLAG_OFB 0x0003
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#define CRYPTO_FLAG_CTR 0x0004
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#define CRYPTO_FLAG_HMAC 0x0010
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#define CRYPTO_FLAG_MASK 0x00FF
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#define CRYPTO_CIPHER_NAME 0x0100
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#define CRYPTO_CIPHER_NAME_CBC (CRYPTO_CIPHER_NAME | CRYPTO_FLAG_CBC)
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#define CRYPTO_HASH_NAME 0x0200
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#define CRYPTO_HASH_NAME_HMAC (CRYPTO_HASH_NAME | CRYPTO_FLAG_HMAC)
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/* ioctl parameter to create a session */
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struct session_op {
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unsigned int cipher; /* e.g. CRYPTO_DES_CBC */
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unsigned int mac; /* e.g. CRYPTO_MD5_HMAC */
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char *alg_name; /* set cipher=CRYPTO_CIPHER_NAME
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or mac=CRYPTO_HASH_NAME */
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#define MAX_ALG_NAME_LEN 128
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size_t alg_namelen;
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size_t keylen; /* cipher key */
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char *key;
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int mackeylen; /* mac key */
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char *mackey;
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/* Return values */
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unsigned int blocksize; /* selected algorithm's block size */
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uint32_t ses; /* session ID */
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};
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/* ioctl parameter to request a crypt/decrypt operation against a session */
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struct crypt_op {
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uint32_t ses; /* from session_op->ses */
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#define COP_DECRYPT 0
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#define COP_ENCRYPT 1
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uint32_t op; /* ie. COP_ENCRYPT */
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uint32_t flags; /* unused */
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size_t len;
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char *src, *dst;
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char *mac;
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char *iv;
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};
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/* clone original filedescriptor */
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#define CRIOGET _IOWR('c', 100, uint32_t)
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/* create crypto session */
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#define CIOCGSESSION _IOWR('c', 101, struct session_op)
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/* finish crypto session */
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#define CIOCFSESSION _IOW('c', 102, uint32_t)
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/* request encryption/decryptions of a given buffer */
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#define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
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/* ioctl()s for asym-crypto. Not yet supported. */
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#define CIOCKEY _IOWR('c', 104, void *)
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#define CIOCASYMFEAT _IOR('c', 105, uint32_t)
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#endif /* _CRYPTODEV_H */
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