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- /* $FreeBSD$ */
- /* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */
- /*-
- * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
- * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
- *
- * This code was written by Angelos D. Keromytis in Athens, Greece, in
- * February 2000. Network Security Technologies Inc. (NSTI) kindly
- * supported the development of this code.
- *
- * Copyright (c) 2000 Angelos D. Keromytis
- *
- * Permission to use, copy, and modify this software with or without fee
- * is hereby granted, provided that this entire notice is included in
- * all source code copies of any software which is or includes a copy or
- * modification of this software.
- *
- * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
- * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
- * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
- * PURPOSE.
- *
- * Copyright (c) 2001 Theo de Raadt
- * Copyright (c) 2014 The FreeBSD Foundation
- * All rights reserved.
- *
- * Portions of this software were developed by John-Mark Gurney
- * under sponsorship of the FreeBSD Foundation and
- * Rubicon Communications, LLC (Netgate).
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Effort sponsored in part by the Defense Advanced Research Projects
- * Agency (DARPA) and Air Force Research Laboratory, Air Force
- * Materiel Command, USAF, under agreement number F30602-01-2-0537.
- *
- */
- #ifndef _CRYPTO_CRYPTO_H_
- #define _CRYPTO_CRYPTO_H_
- #include <sys/ioccom.h>
- #ifdef _KERNEL
- #include <opencrypto/_cryptodev.h>
- #include <sys/_task.h>
- #endif
- /* Some initial values */
- #define CRYPTO_DRIVERS_INITIAL 4
- /* Hash values */
- #define NULL_HASH_LEN 16
- #define SHA1_HASH_LEN 20
- #define RIPEMD160_HASH_LEN 20
- #define SHA2_224_HASH_LEN 28
- #define SHA2_256_HASH_LEN 32
- #define SHA2_384_HASH_LEN 48
- #define SHA2_512_HASH_LEN 64
- #define AES_GMAC_HASH_LEN 16
- #define POLY1305_HASH_LEN 16
- #define AES_CBC_MAC_HASH_LEN 16
- /* Maximum hash algorithm result length */
- #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */
- #define SHA1_BLOCK_LEN 64
- #define RIPEMD160_BLOCK_LEN 64
- #define SHA2_224_BLOCK_LEN 64
- #define SHA2_256_BLOCK_LEN 64
- #define SHA2_384_BLOCK_LEN 128
- #define SHA2_512_BLOCK_LEN 128
- /* HMAC values */
- #define NULL_HMAC_BLOCK_LEN 64
- /* Maximum HMAC block length */
- #define HMAC_MAX_BLOCK_LEN SHA2_512_BLOCK_LEN /* Keep this updated */
- #define HMAC_IPAD_VAL 0x36
- #define HMAC_OPAD_VAL 0x5C
- /* HMAC Key Length */
- #define AES_128_GMAC_KEY_LEN 16
- #define AES_192_GMAC_KEY_LEN 24
- #define AES_256_GMAC_KEY_LEN 32
- #define AES_128_CBC_MAC_KEY_LEN 16
- #define AES_192_CBC_MAC_KEY_LEN 24
- #define AES_256_CBC_MAC_KEY_LEN 32
- #define POLY1305_KEY_LEN 32
- /* Encryption algorithm block sizes */
- #define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */
- #define RIJNDAEL128_BLOCK_LEN 16
- #define AES_BLOCK_LEN 16
- #define AES_ICM_BLOCK_LEN 1
- #define CAMELLIA_BLOCK_LEN 16
- #define CHACHA20_NATIVE_BLOCK_LEN 64
- #define EALG_MAX_BLOCK_LEN CHACHA20_NATIVE_BLOCK_LEN /* Keep this updated */
- /* IV Lengths */
- #define AES_GCM_IV_LEN 12
- #define AES_CCM_IV_LEN 12
- #define AES_XTS_IV_LEN 8
- #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */
- /* Min and Max Encryption Key Sizes */
- #define NULL_MIN_KEY 0
- #define NULL_MAX_KEY 256 /* 2048 bits, max key */
- #define RIJNDAEL_MIN_KEY 16
- #define RIJNDAEL_MAX_KEY 32
- #define AES_MIN_KEY RIJNDAEL_MIN_KEY
- #define AES_MAX_KEY RIJNDAEL_MAX_KEY
- #define AES_XTS_MIN_KEY (2 * AES_MIN_KEY)
- #define AES_XTS_MAX_KEY (2 * AES_MAX_KEY)
- #define CAMELLIA_MIN_KEY 16
- #define CAMELLIA_MAX_KEY 32
- /* Maximum hash algorithm result length */
- #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */
- #define CRYPTO_ALGORITHM_MIN 1
- #define CRYPTO_DES_CBC 1
- #define CRYPTO_3DES_CBC 2
- #define CRYPTO_BLF_CBC 3
- #define CRYPTO_CAST_CBC 4
- #define CRYPTO_SKIPJACK_CBC 5
- #define CRYPTO_MD5_HMAC 6
- #define CRYPTO_SHA1_HMAC 7
- #define CRYPTO_RIPEMD160_HMAC 8
- #define CRYPTO_MD5_KPDK 9
- #define CRYPTO_SHA1_KPDK 10
- #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */
- #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */
- #define CRYPTO_ARC4 12
- #define CRYPTO_MD5 13
- #define CRYPTO_SHA1 14
- #define CRYPTO_NULL_HMAC 15
- #define CRYPTO_NULL_CBC 16
- #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */
- #define CRYPTO_SHA2_256_HMAC 18
- #define CRYPTO_SHA2_384_HMAC 19
- #define CRYPTO_SHA2_512_HMAC 20
- #define CRYPTO_CAMELLIA_CBC 21
- #define CRYPTO_AES_XTS 22
- #define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */
- #define CRYPTO_AES_NIST_GMAC 24 /* GMAC only */
- #define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */
- #ifdef _KERNEL
- #define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */
- #define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */
- #define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */
- #endif
- #define CRYPTO_BLAKE2B 29 /* Blake2b hash */
- #define CRYPTO_BLAKE2S 30 /* Blake2s hash */
- #define CRYPTO_CHACHA20 31 /* Chacha20 stream cipher */
- #define CRYPTO_SHA2_224_HMAC 32
- #define CRYPTO_RIPEMD160 33
- #define CRYPTO_SHA2_224 34
- #define CRYPTO_SHA2_256 35
- #define CRYPTO_SHA2_384 36
- #define CRYPTO_SHA2_512 37
- #define CRYPTO_POLY1305 38
- #define CRYPTO_AES_CCM_CBC_MAC 39 /* auth side */
- #define CRYPTO_AES_CCM_16 40 /* cipher side */
- #define CRYPTO_ALGORITHM_MAX 40 /* Keep updated - see below */
- #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \
- (x) <= CRYPTO_ALGORITHM_MAX)
- /* Algorithm flags */
- #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
- #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */
- #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */
- /*
- * Crypto driver/device flags. They can set in the crid
- * parameter when creating a session or submitting a key
- * op to affect the device/driver assigned. If neither
- * of these are specified then the crid is assumed to hold
- * the driver id of an existing (and suitable) device that
- * must be used to satisfy the request.
- */
- #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */
- #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */
- /* Does the kernel support vmpage buffers on this platform? */
- #ifdef __powerpc__
- #define CRYPTO_MAY_HAVE_VMPAGE 1
- #else
- #define CRYPTO_MAY_HAVE_VMPAGE ( PMAP_HAS_DMAP )
- #endif
- /* Does the currently running system support vmpage buffers on this platform? */
- #define CRYPTO_HAS_VMPAGE ( PMAP_HAS_DMAP )
- /* NB: deprecated */
- struct session_op {
- uint32_t cipher; /* ie. CRYPTO_AES_CBC */
- uint32_t mac; /* ie. CRYPTO_SHA2_256_HMAC */
- uint32_t keylen; /* cipher key */
- const void *key;
- int mackeylen; /* mac key */
- const void *mackey;
- uint32_t ses; /* returns: session # */
- };
- /*
- * session and crypt _op structs are used by userspace programs to interact
- * with /dev/crypto. Confusingly, the internal kernel interface is named
- * "cryptop" (no underscore).
- */
- struct session2_op {
- uint32_t cipher; /* ie. CRYPTO_AES_CBC */
- uint32_t mac; /* ie. CRYPTO_SHA2_256_HMAC */
- uint32_t keylen; /* cipher key */
- const void *key;
- int mackeylen; /* mac key */
- const void *mackey;
- uint32_t ses; /* returns: session # */
- int crid; /* driver id + flags (rw) */
- int pad[4]; /* for future expansion */
- };
- struct crypt_op {
- uint32_t ses;
- uint16_t op; /* i.e. COP_ENCRYPT */
- #define COP_ENCRYPT 1
- #define COP_DECRYPT 2
- uint16_t flags;
- #define COP_F_CIPHER_FIRST 0x0001 /* Cipher before MAC. */
- #define COP_F_BATCH 0x0008 /* Batch op if possible */
- u_int len;
- const void *src; /* become iov[] inside kernel */
- void *dst;
- void *mac; /* must be big enough for chosen MAC */
- const void *iv;
- };
- /* op and flags the same as crypt_op */
- struct crypt_aead {
- uint32_t ses;
- uint16_t op; /* i.e. COP_ENCRYPT */
- uint16_t flags;
- u_int len;
- u_int aadlen;
- u_int ivlen;
- const void *src; /* become iov[] inside kernel */
- void *dst;
- const void *aad; /* additional authenticated data */
- void *tag; /* must fit for chosen TAG length */
- const void *iv;
- };
- /*
- * Parameters for looking up a crypto driver/device by
- * device name or by id. The latter are returned for
- * created sessions (crid) and completed key operations.
- */
- struct crypt_find_op {
- int crid; /* driver id + flags */
- char name[32]; /* device/driver name */
- };
- /* bignum parameter, in packed bytes, ... */
- struct crparam {
- void *crp_p;
- u_int crp_nbits;
- };
- #define CRK_MAXPARAM 8
- struct crypt_kop {
- u_int crk_op; /* ie. CRK_MOD_EXP or other */
- u_int crk_status; /* return status */
- u_short crk_iparams; /* # of input parameters */
- u_short crk_oparams; /* # of output parameters */
- u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */
- struct crparam crk_param[CRK_MAXPARAM];
- };
- #define CRK_ALGORITM_MIN 0
- #define CRK_MOD_EXP 0
- #define CRK_MOD_EXP_CRT 1
- #define CRK_DSA_SIGN 2
- #define CRK_DSA_VERIFY 3
- #define CRK_DH_COMPUTE_KEY 4
- #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */
- #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)
- #define CIOCGSESSION _IOWR('c', 101, struct session_op)
- #define CIOCFSESSION _IOW('c', 102, uint32_t)
- #define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
- #define CIOCKEY _IOWR('c', 104, struct crypt_kop)
- #define CIOCASYMFEAT _IOR('c', 105, uint32_t)
- #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op)
- #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop)
- #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op)
- #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead)
- struct cryptostats {
- uint64_t cs_ops; /* symmetric crypto ops submitted */
- uint64_t cs_errs; /* symmetric crypto ops that failed */
- uint64_t cs_kops; /* asymetric/key ops submitted */
- uint64_t cs_kerrs; /* asymetric/key ops that failed */
- uint64_t cs_intrs; /* crypto swi thread activations */
- uint64_t cs_rets; /* crypto return thread activations */
- uint64_t cs_blocks; /* symmetric op driver block */
- uint64_t cs_kblocks; /* symmetric op driver block */
- };
- #ifdef _KERNEL
- /*
- * Return values for cryptodev_probesession methods.
- */
- #define CRYPTODEV_PROBE_HARDWARE (-100)
- #define CRYPTODEV_PROBE_ACCEL_SOFTWARE (-200)
- #define CRYPTODEV_PROBE_SOFTWARE (-500)
- #if 0
- #define CRYPTDEB(s, ...) do { \
- printf("%s:%d: " s "\n", __FILE__, __LINE__, ## __VA_ARGS__); \
- } while (0)
- #else
- #define CRYPTDEB(...) do { } while (0)
- #endif
- struct crypto_session_params {
- int csp_mode; /* Type of operations to perform. */
- #define CSP_MODE_NONE 0
- #define CSP_MODE_COMPRESS 1 /* Compression/decompression. */
- #define CSP_MODE_CIPHER 2 /* Encrypt/decrypt. */
- #define CSP_MODE_DIGEST 3 /* Compute/verify digest. */
- #define CSP_MODE_AEAD 4 /* Combined auth/encryption. */
- #define CSP_MODE_ETA 5 /* IPsec style encrypt-then-auth */
- int csp_flags;
- #define CSP_F_SEPARATE_OUTPUT 0x0001 /* Requests can use separate output */
- #define CSP_F_SEPARATE_AAD 0x0002 /* Requests can use separate AAD */
- #define CSP_F_ESN 0x0004 /* Requests can use seperate ESN field */
- int csp_ivlen; /* IV length in bytes. */
- int csp_cipher_alg;
- int csp_cipher_klen; /* Key length in bytes. */
- const void *csp_cipher_key;
- int csp_auth_alg;
- int csp_auth_klen; /* Key length in bytes. */
- const void *csp_auth_key;
- int csp_auth_mlen; /* Number of digest bytes to use.
- 0 means all. */
- };
- enum crypto_buffer_type {
- CRYPTO_BUF_NONE = 0,
- CRYPTO_BUF_CONTIG,
- CRYPTO_BUF_UIO,
- CRYPTO_BUF_MBUF,
- CRYPTO_BUF_VMPAGE,
- CRYPTO_BUF_LAST = CRYPTO_BUF_VMPAGE
- };
- /*
- * Description of a data buffer for a request. Requests can either
- * have a single buffer that is modified in place or separate input
- * and output buffers.
- */
- struct crypto_buffer {
- union {
- struct {
- char *cb_buf;
- int cb_buf_len;
- };
- struct mbuf *cb_mbuf;
- struct {
- vm_page_t *cb_vm_page;
- int cb_vm_page_len;
- int cb_vm_page_offset;
- };
- struct uio *cb_uio;
- };
- enum crypto_buffer_type cb_type;
- };
- /*
- * A cursor is used to iterate through a crypto request data buffer.
- */
- struct crypto_buffer_cursor {
- union {
- char *cc_buf;
- struct mbuf *cc_mbuf;
- struct iovec *cc_iov;
- vm_page_t *cc_vmpage;
- };
- /* Optional bytes of valid data remaining */
- int cc_buf_len;
- /*
- * Optional offset within the current buffer segment where
- * valid data begins
- */
- size_t cc_offset;
- enum crypto_buffer_type cc_type;
- };
- /* Structure describing complete operation */
- struct cryptop {
- TAILQ_ENTRY(cryptop) crp_next;
- struct task crp_task;
- crypto_session_t crp_session; /* Session */
- int crp_olen; /* Result total length */
- int crp_etype; /*
- * Error type (zero means no error).
- * All error codes except EAGAIN
- * indicate possible data corruption (as in,
- * the data have been touched). On all
- * errors, the crp_session may have changed
- * (reset to a new one), so the caller
- * should always check and use the new
- * value on future requests.
- */
- int crp_flags;
- #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */
- #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */
- #define CRYPTO_F_DONE 0x0020 /* Operation completed */
- #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */
- #define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads
- * if op is synchronous
- */
- #define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /*
- * Dispatch the crypto jobs in the same
- * order there are submitted. Applied only
- * if CRYPTO_F_ASYNC flags is set
- */
- #define CRYPTO_F_IV_SEPARATE 0x0200 /* Use crp_iv[] as IV. */
- int crp_op;
- struct crypto_buffer crp_buf;
- struct crypto_buffer crp_obuf;
- void *crp_aad; /* AAD buffer. */
- int crp_aad_start; /* Location of AAD. */
- int crp_aad_length; /* 0 => no AAD. */
- uint8_t crp_esn[4]; /* high-order ESN */
- int crp_iv_start; /* Location of IV. IV length is from
- * the session.
- */
- int crp_payload_start; /* Location of ciphertext. */
- int crp_payload_output_start;
- int crp_payload_length;
- int crp_digest_start; /* Location of MAC/tag. Length is
- * from the session.
- */
- uint8_t crp_iv[EALG_MAX_BLOCK_LEN]; /* IV if IV_SEPARATE. */
- const void *crp_cipher_key; /* New cipher key if non-NULL. */
- const void *crp_auth_key; /* New auth key if non-NULL. */
- void *crp_opaque; /* Opaque pointer, passed along */
- int (*crp_callback)(struct cryptop *); /* Callback function */
- struct bintime crp_tstamp; /* performance time stamp */
- uint32_t crp_seq; /* used for ordered dispatch */
- uint32_t crp_retw_id; /*
- * the return worker to be used,
- * used for ordered dispatch
- */
- };
- static __inline void
- _crypto_use_buf(struct crypto_buffer *cb, void *buf, int len)
- {
- cb->cb_buf = buf;
- cb->cb_buf_len = len;
- cb->cb_type = CRYPTO_BUF_CONTIG;
- }
- static __inline void
- _crypto_use_mbuf(struct crypto_buffer *cb, struct mbuf *m)
- {
- cb->cb_mbuf = m;
- cb->cb_type = CRYPTO_BUF_MBUF;
- }
- static __inline void
- _crypto_use_vmpage(struct crypto_buffer *cb, vm_page_t *pages, int len,
- int offset)
- {
- cb->cb_vm_page = pages;
- cb->cb_vm_page_len = len;
- cb->cb_vm_page_offset = offset;
- cb->cb_type = CRYPTO_BUF_VMPAGE;
- }
- static __inline void
- _crypto_use_uio(struct crypto_buffer *cb, struct uio *uio)
- {
- cb->cb_uio = uio;
- cb->cb_type = CRYPTO_BUF_UIO;
- }
- static __inline void
- crypto_use_buf(struct cryptop *crp, void *buf, int len)
- {
- _crypto_use_buf(&crp->crp_buf, buf, len);
- }
- static __inline void
- crypto_use_mbuf(struct cryptop *crp, struct mbuf *m)
- {
- _crypto_use_mbuf(&crp->crp_buf, m);
- }
- static __inline void
- crypto_use_vmpage(struct cryptop *crp, vm_page_t *pages, int len, int offset)
- {
- _crypto_use_vmpage(&crp->crp_buf, pages, len, offset);
- }
- static __inline void
- crypto_use_uio(struct cryptop *crp, struct uio *uio)
- {
- _crypto_use_uio(&crp->crp_buf, uio);
- }
- static __inline void
- crypto_use_output_buf(struct cryptop *crp, void *buf, int len)
- {
- _crypto_use_buf(&crp->crp_obuf, buf, len);
- }
- static __inline void
- crypto_use_output_mbuf(struct cryptop *crp, struct mbuf *m)
- {
- _crypto_use_mbuf(&crp->crp_obuf, m);
- }
- static __inline void
- crypto_use_output_vmpage(struct cryptop *crp, vm_page_t *pages, int len,
- int offset)
- {
- _crypto_use_vmpage(&crp->crp_obuf, pages, len, offset);
- }
- static __inline void
- crypto_use_output_uio(struct cryptop *crp, struct uio *uio)
- {
- _crypto_use_uio(&crp->crp_obuf, uio);
- }
- #define CRYPTOP_ASYNC(crp) \
- (((crp)->crp_flags & CRYPTO_F_ASYNC) && \
- crypto_ses2caps((crp)->crp_session) & CRYPTOCAP_F_SYNC)
- #define CRYPTOP_ASYNC_KEEPORDER(crp) \
- (CRYPTOP_ASYNC(crp) && \
- (crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER)
- #define CRYPTO_HAS_OUTPUT_BUFFER(crp) \
- ((crp)->crp_obuf.cb_type != CRYPTO_BUF_NONE)
- /* Flags in crp_op. */
- #define CRYPTO_OP_DECRYPT 0x0
- #define CRYPTO_OP_ENCRYPT 0x1
- #define CRYPTO_OP_IS_ENCRYPT(op) ((op) & CRYPTO_OP_ENCRYPT)
- #define CRYPTO_OP_COMPUTE_DIGEST 0x0
- #define CRYPTO_OP_VERIFY_DIGEST 0x2
- #define CRYPTO_OP_DECOMPRESS CRYPTO_OP_DECRYPT
- #define CRYPTO_OP_COMPRESS CRYPTO_OP_ENCRYPT
- #define CRYPTO_OP_IS_COMPRESS(op) ((op) & CRYPTO_OP_COMPRESS)
- /*
- * Hints passed to process methods.
- */
- #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */
- struct cryptkop {
- TAILQ_ENTRY(cryptkop) krp_next;
- u_int krp_op; /* ie. CRK_MOD_EXP or other */
- u_int krp_status; /* return status */
- u_short krp_iparams; /* # of input parameters */
- u_short krp_oparams; /* # of output parameters */
- u_int krp_crid; /* desired device, etc. */
- uint32_t krp_hid; /* device used */
- struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
- void (*krp_callback)(struct cryptkop *);
- struct cryptocap *krp_cap;
- };
- uint32_t crypto_ses2hid(crypto_session_t crypto_session);
- uint32_t crypto_ses2caps(crypto_session_t crypto_session);
- void *crypto_get_driver_session(crypto_session_t crypto_session);
- const struct crypto_session_params *crypto_get_params(
- crypto_session_t crypto_session);
- struct auth_hash *crypto_auth_hash(const struct crypto_session_params *csp);
- struct enc_xform *crypto_cipher(const struct crypto_session_params *csp);
- MALLOC_DECLARE(M_CRYPTO_DATA);
- extern int crypto_newsession(crypto_session_t *cses,
- const struct crypto_session_params *params, int hard);
- extern void crypto_freesession(crypto_session_t cses);
- #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE
- #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE
- #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */
- #define CRYPTOCAP_F_ACCEL_SOFTWARE 0x08000000
- extern int32_t crypto_get_driverid(device_t dev, size_t session_size,
- int flags);
- extern int crypto_find_driver(const char *);
- extern device_t crypto_find_device_byhid(int hid);
- extern int crypto_getcaps(int hid);
- extern int crypto_kregister(uint32_t, int, uint32_t);
- extern int crypto_unregister_all(uint32_t driverid);
- extern int crypto_dispatch(struct cryptop *crp);
- extern int crypto_kdispatch(struct cryptkop *);
- #define CRYPTO_SYMQ 0x1
- #define CRYPTO_ASYMQ 0x2
- extern int crypto_unblock(uint32_t, int);
- extern void crypto_done(struct cryptop *crp);
- extern void crypto_kdone(struct cryptkop *);
- extern int crypto_getfeat(int *);
- extern void crypto_destroyreq(struct cryptop *crp);
- extern void crypto_initreq(struct cryptop *crp, crypto_session_t cses);
- extern void crypto_freereq(struct cryptop *crp);
- extern struct cryptop *crypto_getreq(crypto_session_t cses, int how);
- extern int crypto_usercrypto; /* userland may do crypto requests */
- extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */
- extern int crypto_devallowsoft; /* only use hardware crypto */
- #ifdef SYSCTL_DECL
- SYSCTL_DECL(_kern_crypto);
- #endif
- /* Helper routines for drivers to initialize auth contexts for HMAC. */
- struct auth_hash;
- void hmac_init_ipad(const struct auth_hash *axf, const char *key, int klen,
- void *auth_ctx);
- void hmac_init_opad(const struct auth_hash *axf, const char *key, int klen,
- void *auth_ctx);
- /*
- * Crypto-related utility routines used mainly by drivers.
- *
- * Similar to m_copyback/data, *_copyback copy data from the 'src'
- * buffer into the crypto request's data buffer while *_copydata copy
- * data from the crypto request's data buffer into the the 'dst'
- * buffer.
- */
- void crypto_copyback(struct cryptop *crp, int off, int size,
- const void *src);
- void crypto_copydata(struct cryptop *crp, int off, int size, void *dst);
- int crypto_apply(struct cryptop *crp, int off, int len,
- int (*f)(void *, const void *, u_int), void *arg);
- void *crypto_contiguous_subsegment(struct cryptop *crp, size_t skip,
- size_t len);
- int crypto_apply_buf(struct crypto_buffer *cb, int off, int len,
- int (*f)(void *, const void *, u_int), void *arg);
- void *crypto_buffer_contiguous_subsegment(struct crypto_buffer *cb,
- size_t skip, size_t len);
- size_t crypto_buffer_len(struct crypto_buffer *cb);
- void crypto_cursor_init(struct crypto_buffer_cursor *cc,
- const struct crypto_buffer *cb);
- void crypto_cursor_advance(struct crypto_buffer_cursor *cc, size_t amount);
- void *crypto_cursor_segbase(struct crypto_buffer_cursor *cc);
- size_t crypto_cursor_seglen(struct crypto_buffer_cursor *cc);
- void crypto_cursor_copyback(struct crypto_buffer_cursor *cc, int size,
- const void *vsrc);
- void crypto_cursor_copydata(struct crypto_buffer_cursor *cc, int size,
- void *vdst);
- void crypto_cursor_copydata_noadv(struct crypto_buffer_cursor *cc, int size,
- void *vdst);
- static __inline void
- crypto_read_iv(struct cryptop *crp, void *iv)
- {
- const struct crypto_session_params *csp;
- csp = crypto_get_params(crp->crp_session);
- if (crp->crp_flags & CRYPTO_F_IV_SEPARATE)
- memcpy(iv, crp->crp_iv, csp->csp_ivlen);
- else
- crypto_copydata(crp, crp->crp_iv_start, csp->csp_ivlen, iv);
- }
- #endif /* _KERNEL */
- #endif /* _CRYPTO_CRYPTO_H_ */
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