Annotation of src/usr.bin/ssh/sk-api.h, Revision 1.10
1.10 ! djm 1: /* $OpenBSD: sk-api.h,v 1.9 2020/04/28 04:02:29 djm Exp $ */
1.1 djm 2: /*
3: * Copyright (c) 2019 Google LLC
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17:
18: #ifndef _SK_API_H
19: #define _SK_API_H 1
20:
21: #include <stddef.h>
22: #include <stdint.h>
23:
24: /* Flags */
25: #define SSH_SK_USER_PRESENCE_REQD 0x01
1.3 djm 26: #define SSH_SK_USER_VERIFICATION_REQD 0x04
27: #define SSH_SK_RESIDENT_KEY 0x20
1.1 djm 28:
1.2 markus 29: /* Algs */
30: #define SSH_SK_ECDSA 0x00
31: #define SSH_SK_ED25519 0x01
1.6 djm 32:
33: /* Error codes */
34: #define SSH_SK_ERR_GENERAL -1
35: #define SSH_SK_ERR_UNSUPPORTED -2
36: #define SSH_SK_ERR_PIN_REQUIRED -3
1.8 djm 37: #define SSH_SK_ERR_DEVICE_NOT_FOUND -4
1.2 markus 38:
1.1 djm 39: struct sk_enroll_response {
40: uint8_t *public_key;
41: size_t public_key_len;
42: uint8_t *key_handle;
43: size_t key_handle_len;
44: uint8_t *signature;
45: size_t signature_len;
46: uint8_t *attestation_cert;
47: size_t attestation_cert_len;
48: };
49:
50: struct sk_sign_response {
51: uint8_t flags;
52: uint32_t counter;
53: uint8_t *sig_r;
54: size_t sig_r_len;
55: uint8_t *sig_s;
56: size_t sig_s_len;
57: };
58:
1.4 djm 59: struct sk_resident_key {
1.7 djm 60: uint32_t alg;
1.4 djm 61: size_t slot;
62: char *application;
63: struct sk_enroll_response key;
1.10 ! djm 64: uint8_t flags;
1.4 djm 65: };
66:
1.7 djm 67: struct sk_option {
68: char *name;
69: char *value;
70: uint8_t required;
71: };
72:
1.10 ! djm 73: #define SSH_SK_VERSION_MAJOR 0x00060000 /* current API version */
1.1 djm 74: #define SSH_SK_VERSION_MAJOR_MASK 0xffff0000
75:
76: /* Return the version of the middleware API */
77: uint32_t sk_api_version(void);
78:
79: /* Enroll a U2F key (private key generation) */
1.7 djm 80: int sk_enroll(uint32_t alg, const uint8_t *challenge, size_t challenge_len,
1.5 djm 81: const char *application, uint8_t flags, const char *pin,
1.7 djm 82: struct sk_option **options, struct sk_enroll_response **enroll_response);
1.1 djm 83:
84: /* Sign a challenge */
1.7 djm 85: int sk_sign(uint32_t alg, const uint8_t *message, size_t message_len,
1.1 djm 86: const char *application, const uint8_t *key_handle, size_t key_handle_len,
1.7 djm 87: uint8_t flags, const char *pin, struct sk_option **options,
88: struct sk_sign_response **sign_response);
1.4 djm 89:
90: /* Enumerate all resident keys */
1.7 djm 91: int sk_load_resident_keys(const char *pin, struct sk_option **options,
1.4 djm 92: struct sk_resident_key ***rks, size_t *nrks);
1.1 djm 93:
94: #endif /* _SK_API_H */