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