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c54cd1892c
Allow passing a PIN via the SK API (API major crank) and let the ssh-sk-helper API follow. Also enhance the ssh-sk-helper API to support passing back an error code instead of a complete reply. Will be used to signal "wrong PIN", etc. feedback and ok markus@ OpenBSD-Commit-ID: a1bd6b0a2421646919a0c139b8183ad76d28fb71
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/* $OpenBSD: ssh-sk.h,v 1.8 2019/12/30 09:23:28 djm Exp $ */
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/*
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* Copyright (c) 2019 Google LLC
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _SSH_SK_H
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#define _SSH_SK_H 1
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struct sshbuf;
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struct sshkey;
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/* Version of protocol expected from ssh-sk-helper */
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#define SSH_SK_HELPER_VERSION 3
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/* ssh-sk-helper messages */
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#define SSH_SK_HELPER_ERROR 0 /* Only valid H->C */
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#define SSH_SK_HELPER_SIGN 1
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#define SSH_SK_HELPER_ENROLL 2
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#define SSH_SK_HELPER_LOAD_RESIDENT 3
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/*
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* Enroll (generate) a new security-key hosted private key of given type
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* via the specified provider middleware.
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* If challenge_buf is NULL then a random 256 bit challenge will be used.
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*
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* Returns 0 on success or a ssherr.h error code on failure.
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*
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* If successful and the attest_data buffer is not NULL then attestation
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* information is placed there.
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*/
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int sshsk_enroll(int type, const char *provider_path, const char *application,
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uint8_t flags, const char *pin, struct sshbuf *challenge_buf,
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struct sshkey **keyp, struct sshbuf *attest);
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/*
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* Calculate an ECDSA_SK or ED25519_SK signature using the specified key
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* and provider middleware.
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*
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* Returns 0 on success or a ssherr.h error code on failure.
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*/
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int sshsk_sign(const char *provider_path, struct sshkey *key,
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u_char **sigp, size_t *lenp, const u_char *data, size_t datalen,
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u_int compat, const char *pin);
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/*
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* Enumerates and loads all SSH-compatible resident keys from a security
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* key.
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*
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* Returns 0 on success or a ssherr.h error code on failure.
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*/
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int sshsk_load_resident(const char *provider_path, const char *pin,
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struct sshkey ***keysp, size_t *nkeysp);
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#endif /* _SSH_SK_H */
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