upstream: ssh-keygen support for generating U2F/FIDO keys
OpenBSD-Commit-ID: 6ce04f2b497ac9dd8c327f76f1e6c724fb1d1b37
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ed3467c1e1
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41
ssh-keygen.c
41
ssh-keygen.c
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@ -1,4 +1,4 @@
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/* $OpenBSD: ssh-keygen.c,v 1.356 2019/10/16 06:03:30 djm Exp $ */
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/* $OpenBSD: ssh-keygen.c,v 1.357 2019/10/31 21:17:09 djm Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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* Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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@ -63,6 +63,8 @@
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#include "utf8.h"
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#include "authfd.h"
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#include "sshsig.h"
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#include "ssh-sk.h"
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#include "sk-api.h" /* XXX for SSH_SK_USER_PRESENCE_REQD; remove */
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#ifdef WITH_OPENSSL
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# define DEFAULT_KEY_TYPE_NAME "rsa"
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@ -150,6 +152,9 @@ static char *key_type_name = NULL;
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/* Load key from this PKCS#11 provider */
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static char *pkcs11provider = NULL;
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/* FIDO/U2F provider to use */
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static char *sk_provider = NULL;
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/* Format for writing private keys */
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static int private_key_format = SSHKEY_PRIVATE_OPENSSH;
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@ -269,6 +274,10 @@ ask_filename(struct passwd *pw, const char *prompt)
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case KEY_ECDSA:
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name = _PATH_SSH_CLIENT_ID_ECDSA;
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break;
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case KEY_ECDSA_SK_CERT:
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case KEY_ECDSA_SK:
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name = _PATH_SSH_CLIENT_ID_ECDSA_SK;
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break;
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#endif
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case KEY_RSA_CERT:
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case KEY_RSA:
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@ -2767,9 +2776,10 @@ main(int argc, char **argv)
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int gen_all_hostkeys = 0, gen_krl = 0, update_krl = 0, check_krl = 0;
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int prefer_agent = 0, convert_to = 0, convert_from = 0;
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int print_public = 0, print_generic = 0, cert_serial_autoinc = 0;
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unsigned long long cert_serial = 0;
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unsigned long long ull, cert_serial = 0;
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char *identity_comment = NULL, *ca_key_path = NULL;
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u_int32_t bits = 0;
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uint8_t sk_flags = SSH_SK_USER_PRESENCE_REQD;
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FILE *f;
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const char *errstr;
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int log_level = SYSLOG_LEVEL_INFO;
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@ -2804,10 +2814,12 @@ main(int argc, char **argv)
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if (gethostname(hostname, sizeof(hostname)) == -1)
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fatal("gethostname: %s", strerror(errno));
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/* Remaining characters: dw */
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sk_provider = getenv("SSH_SK_PROVIDER");
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/* Remaining character: d */
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while ((opt = getopt(argc, argv, "ABHLQUXceghiklopquvxy"
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"C:D:E:F:G:I:J:K:M:N:O:P:R:S:T:V:W:Y:Z:"
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"a:b:f:g:j:m:n:r:s:t:z:")) != -1) {
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"a:b:f:g:j:m:n:r:s:t:w:x:z:")) != -1) {
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switch (opt) {
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case 'A':
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gen_all_hostkeys = 1;
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@ -2907,7 +2919,6 @@ main(int argc, char **argv)
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quiet = 1;
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break;
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case 'e':
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case 'x':
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/* export key */
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convert_to = 1;
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break;
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@ -2964,6 +2975,19 @@ main(int argc, char **argv)
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break;
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case 'Y':
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sign_op = optarg;
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case 'w':
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sk_provider = optarg;
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break;
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case 'x':
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if (*optarg == '\0')
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fatal("Missing security key flags");
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ull = strtoull(optarg, &ep, 0);
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if (*ep != '\0')
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fatal("Security key flags \"%s\" is not a "
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"number", optarg);
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if (ull > 0xff)
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fatal("Invalid security key flags 0x%llx", ull);
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sk_flags = (uint8_t)ull;
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break;
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case 'z':
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errno = 0;
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@ -3221,7 +3245,12 @@ main(int argc, char **argv)
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if (!quiet)
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printf("Generating public/private %s key pair.\n",
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key_type_name);
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if ((r = sshkey_generate(type, bits, &private)) != 0)
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if (type == KEY_ECDSA_SK) {
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if (sshsk_enroll(sk_provider,
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cert_key_id == NULL ? "ssh:" : cert_key_id,
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sk_flags, NULL, &private, NULL) != 0)
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exit(1); /* error message already printed */
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} else if ((r = sshkey_generate(type, bits, &private)) != 0)
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fatal("sshkey_generate failed");
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if ((r = sshkey_from_private(private, &public)) != 0)
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fatal("sshkey_from_private failed: %s\n", ssh_err(r));
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