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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
* Greybus Component Authentication User Header
*
* Copyright(c) 2016 Google Inc. All rights reserved.
* Copyright(c) 2016 Linaro Ltd. All rights reserved.
*/
#ifndef __GREYBUS_AUTHENTICATION_USER_H
#define __GREYBUS_AUTHENTICATION_USER_H
#include <linux/ioctl.h>
#include <linux/types.h>
#define CAP_CERTIFICATE_MAX_SIZE 1600
#define CAP_SIGNATURE_MAX_SIZE 320
/* Certificate class types */
#define CAP_CERT_IMS_EAPC 0x00000001
#define CAP_CERT_IMS_EASC 0x00000002
#define CAP_CERT_IMS_EARC 0x00000003
#define CAP_CERT_IMS_IAPC 0x00000004
#define CAP_CERT_IMS_IASC 0x00000005
#define CAP_CERT_IMS_IARC 0x00000006
/* IMS Certificate response result codes */
#define CAP_IMS_RESULT_CERT_FOUND 0x00
#define CAP_IMS_RESULT_CERT_CLASS_INVAL 0x01
#define CAP_IMS_RESULT_CERT_CORRUPT 0x02
#define CAP_IMS_RESULT_CERT_NOT_FOUND 0x03
/* Authentication types */
#define CAP_AUTH_IMS_PRI 0x00000001
#define CAP_AUTH_IMS_SEC 0x00000002
#define CAP_AUTH_IMS_RSA 0x00000003
/* Authenticate response result codes */
#define CAP_AUTH_RESULT_CR_SUCCESS 0x00
#define CAP_AUTH_RESULT_CR_BAD_TYPE 0x01
#define CAP_AUTH_RESULT_CR_WRONG_EP 0x02
#define CAP_AUTH_RESULT_CR_NO_KEY 0x03
#define CAP_AUTH_RESULT_CR_SIG_FAIL 0x04
/* IOCTL support */
struct cap_ioc_get_endpoint_uid {
__u8 uid[8];
} __packed;
struct cap_ioc_get_ims_certificate {
__u32 certificate_class;
__u32 certificate_id;
__u8 result_code;
__u32 cert_size;
__u8 certificate[CAP_CERTIFICATE_MAX_SIZE];
} __packed;
struct cap_ioc_authenticate {
__u32 auth_type;
__u8 uid[8];
__u8 challenge[32];
__u8 result_code;
__u8 response[64];
__u32 signature_size;
__u8 signature[CAP_SIGNATURE_MAX_SIZE];
} __packed;
#define CAP_IOCTL_BASE 'C'
#define CAP_IOC_GET_ENDPOINT_UID _IOR(CAP_IOCTL_BASE, 0, struct cap_ioc_get_endpoint_uid)
#define CAP_IOC_GET_IMS_CERTIFICATE _IOWR(CAP_IOCTL_BASE, 1, struct cap_ioc_get_ims_certificate)
#define CAP_IOC_AUTHENTICATE _IOWR(CAP_IOCTL_BASE, 2, struct cap_ioc_authenticate)
#endif /* __GREYBUS_AUTHENTICATION_USER_H */
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