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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_CRYPTO_API_H
#define _SYS_CRYPTO_API_H
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/zfs_context.h>
#include <sys/crypto/common.h>
typedef long crypto_req_id_t;
typedef void *crypto_bc_t;
typedef void *crypto_context_t;
typedef void *crypto_ctx_template_t;
typedef uint32_t crypto_call_flag_t;
/* crypto_call_flag's values */
#define CRYPTO_NOTIFY_OPDONE 0x00000002 /* Notify intermediate steps */
#define CRYPTO_SKIP_REQID 0x00000004 /* Skip request ID generation */
#define CRYPTO_RESTRICTED 0x00000008 /* cannot use restricted prov */
typedef struct {
crypto_call_flag_t cr_flag;
void (*cr_callback_func)(void *, int);
void *cr_callback_arg;
crypto_req_id_t cr_reqid;
} crypto_call_req_t;
/*
* Returns the mechanism type corresponding to a mechanism name.
*/
#define CRYPTO_MECH_INVALID ((uint64_t)-1)
extern crypto_mech_type_t crypto_mech2id(const char *name);
/*
* Create and destroy context templates.
*/
extern int crypto_create_ctx_template(crypto_mechanism_t *mech,
crypto_key_t *key, crypto_ctx_template_t *tmpl, int kmflag);
extern void crypto_destroy_ctx_template(crypto_ctx_template_t tmpl);
/*
* Single and multi-part MAC operations.
*/
extern int crypto_mac(crypto_mechanism_t *mech, crypto_data_t *data,
crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *mac,
crypto_call_req_t *cr);
extern int crypto_mac_init(crypto_mechanism_t *mech, crypto_key_t *key,
crypto_ctx_template_t tmpl, crypto_context_t *ctxp, crypto_call_req_t *cr);
extern int crypto_mac_update(crypto_context_t ctx, crypto_data_t *data);
extern int crypto_mac_final(crypto_context_t ctx, crypto_data_t *data);
/*
* Single and multi-part encryption operations.
*/
extern int crypto_encrypt(crypto_mechanism_t *mech, crypto_data_t *plaintext,
crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *ciphertext,
crypto_call_req_t *cr);
/*
* Single and multi-part decryption operations.
*/
extern int crypto_decrypt(crypto_mechanism_t *mech, crypto_data_t *ciphertext,
crypto_key_t *key, crypto_ctx_template_t tmpl, crypto_data_t *plaintext,
crypto_call_req_t *cr);
/*
* A kernel consumer can request to be notified when some particular event
* occurs. The valid events, callback function type, and functions to
* be called to register or unregister for notification are defined below.
*/
#define CRYPTO_EVENT_MECHS_CHANGED 0x00000001
#define CRYPTO_EVENT_PROVIDER_REGISTERED 0x00000002
#define CRYPTO_EVENT_PROVIDER_UNREGISTERED 0x00000004
typedef enum {
CRYPTO_MECH_ADDED = 1,
CRYPTO_MECH_REMOVED
} crypto_event_change_t;
/* The event_arg argument structure for CRYPTO_EVENT_PROVIDERS_CHANGE event */
typedef struct crypto_notify_event_change {
crypto_mech_name_t ec_mech_name;
crypto_event_change_t ec_change;
} crypto_notify_event_change_t;
typedef void *crypto_notify_handle_t;
typedef void (*crypto_notify_callback_t)(uint32_t event_mask, void *event_arg);
extern crypto_notify_handle_t crypto_notify_events(
crypto_notify_callback_t nf, uint32_t event_mask);
extern void crypto_unnotify_events(crypto_notify_handle_t);
/*
* crypto_bufcall(9F) group of routines.
*/
extern crypto_bc_t crypto_bufcall_alloc(void);
extern int crypto_bufcall_free(crypto_bc_t bc);
extern int crypto_bufcall(crypto_bc_t bc, void (*func)(void *arg), void *arg);
extern int crypto_unbufcall(crypto_bc_t bc);
/*
* To obtain the list of key size ranges supported by a mechanism.
*/
#define CRYPTO_MECH_USAGE_ENCRYPT 0x00000001
#define CRYPTO_MECH_USAGE_DECRYPT 0x00000002
#define CRYPTO_MECH_USAGE_MAC 0x00000004
typedef uint32_t crypto_mech_usage_t;
typedef struct crypto_mechanism_info {
size_t mi_min_key_size;
size_t mi_max_key_size;
crypto_keysize_unit_t mi_keysize_unit; /* for mi_xxx_key_size */
crypto_mech_usage_t mi_usage;
} crypto_mechanism_info_t;
#ifdef _SYSCALL32
typedef struct crypto_mechanism_info32 {
size32_t mi_min_key_size;
size32_t mi_max_key_size;
crypto_keysize_unit_t mi_keysize_unit; /* for mi_xxx_key_size */
crypto_mech_usage_t mi_usage;
} crypto_mechanism_info32_t;
#endif /* _SYSCALL32 */
extern int crypto_get_all_mech_info(crypto_mech_type_t,
crypto_mechanism_info_t **, uint_t *, int);
extern void crypto_free_all_mech_info(crypto_mechanism_info_t *, uint_t);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_CRYPTO_API_H */
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