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Annotation of src/usr.bin/ssh/sk-api.h, Revision 1.2

1.2     ! markus      1: /* $OpenBSD: sk-api.h,v 1.1 2019/10/31 21:16:20 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
                     26:
1.2     ! markus     27: /* Algs */
        !            28: #define SSH_SK_ECDSA                   0x00
        !            29: #define SSH_SK_ED25519                 0x01
        !            30:
1.1       djm        31: struct sk_enroll_response {
                     32:        uint8_t *public_key;
                     33:        size_t public_key_len;
                     34:        uint8_t *key_handle;
                     35:        size_t key_handle_len;
                     36:        uint8_t *signature;
                     37:        size_t signature_len;
                     38:        uint8_t *attestation_cert;
                     39:        size_t attestation_cert_len;
                     40: };
                     41:
                     42: struct sk_sign_response {
                     43:        uint8_t flags;
                     44:        uint32_t counter;
                     45:        uint8_t *sig_r;
                     46:        size_t sig_r_len;
                     47:        uint8_t *sig_s;
                     48:        size_t sig_s_len;
                     49: };
                     50:
1.2     ! markus     51: #define SSH_SK_VERSION_MAJOR           0x00020000 /* current API version */
1.1       djm        52: #define SSH_SK_VERSION_MAJOR_MASK      0xffff0000
                     53:
                     54: /* Return the version of the middleware API */
                     55: uint32_t sk_api_version(void);
                     56:
                     57: /* Enroll a U2F key (private key generation) */
1.2     ! markus     58: int sk_enroll(int alg, const uint8_t *challenge, size_t challenge_len,
1.1       djm        59:     const char *application, uint8_t flags,
                     60:     struct sk_enroll_response **enroll_response);
                     61:
                     62: /* Sign a challenge */
1.2     ! markus     63: int sk_sign(int alg, const uint8_t *message, size_t message_len,
1.1       djm        64:     const char *application, const uint8_t *key_handle, size_t key_handle_len,
                     65:     uint8_t flags, struct sk_sign_response **sign_response);
                     66:
                     67: #endif /* _SK_API_H */