1 #include "gnutls-helpers.h"
3 #include <gnutls/openpgp.h>
4 #include <gnutls/x509.h>
7 Author: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
9 License: GPL v3 or later
11 monkeysphere private key translator: execute this with an GPG
12 secret key on stdin (at the moment, only passphraseless RSA keys
15 It will spit out a PEM-encoded version of the key on stdout, which
16 can be fed into ssh-add like this:
18 gpg --export-secret-keys $KEYID | monkeysphere | ssh-add -c /dev/stdin
20 Requirements: I've only built this so far with GnuTLS v2.3.4 --
21 version 2.2.0 does not contain the appropriate pieces.
23 Notes: gpgkey2ssh doesn't seem to provide the same public
26 0 wt215@squeak:~/monkeysphere$ gpg --export-secret-keys 1DCDF89F | ~dkg/src/monkeysphere/monkeysphere | ssh-add -c /dev/stdin
28 OpenPGP RSA Key, with 1024 bits
29 Identity added: /dev/stdin (/dev/stdin)
30 The user has to confirm each use of the key
31 0 wt215@squeak:~/monkeysphere$ ssh-add -L
32 ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQC9gWQqfrnhQKDQnND/3eOexpddE64J+1zp9fcyCje7H5LKclb6DBV2HS6WgW32PJhIzvP+fYZM3dzXea3fpv14y1SicXiRBDgF9SnsNA1qWn2RyzkLcKy7PmM0PDYtU1oiLTcQj/xkWcqW2sLKHT/WW+vZP5XP7RMGN/yWNMfE2Q== /dev/stdin
33 0 wt215@squeak:~/monkeysphere$ gpgkey2ssh 1DCDF89F
34 ssh-rsa AAAAB3NzaC1yc2EAAACBAL2BZCp+ueFAoNCc0P/d457Gl10Trgn7XOn19zIKN7sfkspyVvoMFXYdLpaBbfY8mEjO8/59hkzd3Nd5rd+m/XjLVKJxeJEEOAX1Kew0DWpafZHLOQtwrLs+YzQ8Ni1TWiItNxCP/GRZypbawsodP9Zb69k/lc/tEwY3/JY0x8TZAAAAAwEAAQ== COMMENT
35 0 wt215@squeak:~/monkeysphere$
40 int convert_pgp_to_x509(gnutls_x509_privkey_t* output, gnutls_datum_t* input) {
41 gnutls_openpgp_privkey_t pgp_privkey;
42 gnutls_datum_t m, e, d, p, q, u, g, y, x;
43 gnutls_pk_algorithm_t pgp_algo;
44 unsigned int pgp_bits;
57 if (ret = gnutls_openpgp_privkey_init(&pgp_privkey), ret) {
58 err("Failed to initialized OpenPGP private key (error: %d)\n", ret);
63 /* format could be either: GNUTLS_OPENPGP_FMT_RAW,
64 GNUTLS_OPENPGP_FMT_BASE64; if MONKEYSPHERE_RAW is set, use RAW,
65 otherwise, use BASE64: */
67 if (getenv("MONKEYSPHERE_RAW")) {
68 err("assuming RAW formatted private keys\n");
69 if (ret = gnutls_openpgp_privkey_import(pgp_privkey, input, GNUTLS_OPENPGP_FMT_RAW, NULL, 0), ret)
70 err("failed to import the OpenPGP private key in RAW format (error: %d)\n", ret);
72 err("assuming BASE64 formatted private keys\n");
73 if (ret = gnutls_openpgp_privkey_import (pgp_privkey, input, GNUTLS_OPENPGP_FMT_BASE64, NULL, 0), ret)
74 err("failed to import the OpenPGP private key in BASE64 format (error: %d)\n", ret);
77 pgp_algo = gnutls_openpgp_privkey_get_pk_algorithm(pgp_privkey, &pgp_bits);
79 err("failed to get OpenPGP key algorithm (error: %d)\n", pgp_algo);
82 if (pgp_algo == GNUTLS_PK_RSA) {
83 err("OpenPGP RSA Key, with %d bits\n", pgp_bits);
84 ret = gnutls_openpgp_privkey_export_rsa_raw(pgp_privkey, &m, &e, &d, &p, &q, &u);
85 if (GNUTLS_E_SUCCESS != ret) {
86 err ("failed to export RSA key parameters (error: %d)\n", ret);
90 ret = gnutls_x509_privkey_import_rsa_raw (*output, &m, &e, &d, &p, &q, &u);
91 if (GNUTLS_E_SUCCESS != ret) {
92 err ("failed to import RSA key parameters (error: %d)\n", ret);
95 } else if (pgp_algo == GNUTLS_PK_DSA) {
96 err("OpenPGP DSA Key, with %d bits\n", pgp_bits);
97 ret = gnutls_openpgp_privkey_export_dsa_raw(pgp_privkey, &p, &q, &g, &y, &x);
98 if (GNUTLS_E_SUCCESS != ret) {
99 err ("failed to export DSA key parameters (error: %d)\n", ret);
103 ret = gnutls_x509_privkey_import_dsa_raw (*output, &p, &q, &g, &y, &x);
104 if (GNUTLS_E_SUCCESS != ret) {
105 err ("failed to import DSA key parameters (error: %d)\n", ret);
109 err("OpenPGP Key was not RSA or DSA -- can't deal! (actual algorithm was: %d)\n", pgp_algo);
113 ret = gnutls_x509_privkey_fix(*output);
115 err("failed to fix up the private key in X.509 format (error: %d)\n", ret);
119 gnutls_openpgp_privkey_deinit(pgp_privkey);
123 int convert_x509_to_pgp(gnutls_openpgp_privkey_t* output, gnutls_datum_t* input) {
124 gnutls_x509_privkey_t x509_privkey;
125 gnutls_datum_t m, e, d, p, q, u, g, y, x;
126 gnutls_pk_algorithm_t x509_algo;
139 if (ret = gnutls_x509_privkey_init(&x509_privkey), ret) {
140 err("Failed to initialized X.509 private key (error: %d)\n", ret);
145 /* format could be either: GNUTLS_X509_FMT_DER,
146 GNUTLS_X509_FMT_PEM; if MONKEYSPHERE_DER is set, use DER,
147 otherwise, use PEM: */
149 if (getenv("MONKEYSPHERE_DER")) {
150 err("assuming DER formatted private keys\n");
151 if (ret = gnutls_x509_privkey_import(x509_privkey, input, GNUTLS_X509_FMT_DER), ret)
152 err("failed to import the X.509 private key in DER format (error: %d)\n", ret);
154 err("assuming PEM formatted private keys\n");
155 if (ret = gnutls_x509_privkey_import (x509_privkey, input, GNUTLS_X509_FMT_PEM), ret)
156 err("failed to import the X.509 private key in PEM format (error: %d)\n", ret);
159 x509_algo = gnutls_x509_privkey_get_pk_algorithm(x509_privkey);
161 err("failed to get X.509 key algorithm (error: %d)\n", x509_algo);
164 if (x509_algo == GNUTLS_PK_RSA) {
165 err("X.509 RSA Key\n");
166 ret = gnutls_x509_privkey_export_rsa_raw(x509_privkey, &m, &e, &d, &p, &q, &u);
167 if (GNUTLS_E_SUCCESS != ret) {
168 err ("failed to export RSA key parameters (error: %d)\n", ret);
172 /* ret = gnutls_openpgp_privkey_import_rsa_raw (*output, &m, &e, &d, &p, &q, &u); */
173 ret = GNUTLS_E_UNIMPLEMENTED_FEATURE;
174 if (GNUTLS_E_SUCCESS != ret) {
175 err ("failed to import RSA key parameters (error: %d)\n", ret);
178 } else if (x509_algo == GNUTLS_PK_DSA) {
179 err("X.509 DSA Key\n");
180 ret = gnutls_x509_privkey_export_dsa_raw(x509_privkey, &p, &q, &g, &y, &x);
181 if (GNUTLS_E_SUCCESS != ret) {
182 err ("failed to export DSA key parameters (error: %d)\n", ret);
186 /* ret = gnutls_openpgp_privkey_import_dsa_raw (*output, &p, &q, &g, &y, &x); */
187 ret = GNUTLS_E_UNIMPLEMENTED_FEATURE;
188 if (GNUTLS_E_SUCCESS != ret) {
189 err ("failed to import DSA key parameters (error: %d)\n", ret);
193 err("OpenPGP Key was not RSA or DSA -- can't deal! (actual algorithm was: %d)\n", x509_algo);
197 gnutls_x509_privkey_deinit(x509_privkey);
202 int main(int argc, char* argv[]) {
205 gnutls_x509_privkey_t x509_privkey;
207 char output_data[10240];
208 size_t ods = sizeof(output_data);
214 /* slurp in the private key from stdin */
215 if (ret = set_datum_fd(&data, 0), ret) {
216 err("didn't read file descriptor 0\n");
222 /* Or, instead, read in key from a file name:
223 if (ret = set_datum_file(&data, argv[1]), ret) {
224 err("didn't read file '%s'\n", argv[1]);
229 /* treat the passed file as an X.509 private key, and extract its
232 /* if (ret = gnutls_x509_privkey_import(x509_privkey, &data, GNUTLS_X509_FMT_PEM), ret) { */
233 /* err("Failed to import the X.509 key (error: %d)\n", ret); */
236 /* gnutls_x509_privkey_export_rsa_raw(x509_privkey, &m, &e, &d, &p, &q, &u); */
238 /* try to print the PEM-encoded private key: */
239 /* ret = gnutls_x509_privkey_export (x509_privkey, */
240 /* GNUTLS_X509_FMT_PEM, */
243 /* printf("ret: %u; ods: %u;\n", ret, ods); */
244 /* if (ret == 0) { */
245 /* write(0, output_data, ods); */
249 if (ret = gnutls_x509_privkey_init(&x509_privkey), ret) {
250 err("Failed to initialize X.509 private key (error: %d)\n", ret);
254 if (ret = convert_pgp_to_x509(&x509_privkey, &data), ret) {
258 ret = gnutls_x509_privkey_export (x509_privkey,
262 printf("ret: %u; ods: %u;\n", ret, ods);
264 write(1, output_data, ods);
268 gnutls_x509_privkey_deinit(x509_privkey);
269 gnutls_global_deinit();