diff options
Diffstat (limited to 'src/protocols/ec25519_fhmqvc/util.c')
| -rw-r--r-- | src/protocols/ec25519_fhmqvc/util.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/protocols/ec25519_fhmqvc/util.c b/src/protocols/ec25519_fhmqvc/util.c new file mode 100644 index 0000000..07f4724 --- /dev/null +++ b/src/protocols/ec25519_fhmqvc/util.c @@ -0,0 +1,93 @@ +/* + Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net> + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#include "ec25519_fhmqvc.h" + + +static inline void print_hexdump(const char *desc, unsigned char d[32]) { + char buf[65]; + hexdump(buf, d); + + printf("%s%s\n", desc, buf); +} + +void fastd_protocol_ec25519_fhmqvc_generate_key(fastd_context_t *ctx) { + ecc_int256_t secret_key; + ecc_int256_t public_key; + + if (!ctx->conf->machine_readable) + pr_info(ctx, "Reading 32 bytes from /dev/random..."); + + fastd_random_bytes(ctx, secret_key.p, 32, true); + ecc_25519_gf_sanitize_secret(&secret_key, &secret_key); + + ecc_25519_work_t work; + ecc_25519_scalarmult_base(&work, &secret_key); + ecc_25519_store_packed(&public_key, &work); + + if (ctx->conf->machine_readable) { + print_hexdump("", secret_key.p); + } + else { + print_hexdump("Secret: ", secret_key.p); + print_hexdump("Public: ", public_key.p); + } +} + +void fastd_protocol_ec25519_fhmqvc_show_key(fastd_context_t *ctx) { + if (ctx->conf->machine_readable) + print_hexdump("", ctx->conf->protocol_config->key.public.p); + else + print_hexdump("Public: ", ctx->conf->protocol_config->key.public.p); +} + +void fastd_protocol_ec25519_fhmqvc_set_shell_env(fastd_context_t *ctx, const fastd_peer_t *peer) { + char buf[65]; + + hexdump(buf, ctx->conf->protocol_config->key.public.p); + setenv("LOCAL_KEY", buf, 1); + + if (peer && peer->protocol_config) { + hexdump(buf, peer->protocol_config->public_key.p); + setenv("PEER_KEY", buf, 1); + } + else { + unsetenv("PEER_KEY"); + } +} + +bool fastd_protocol_ec25519_fhmqvc_describe_peer(const fastd_context_t *ctx UNUSED, const fastd_peer_t *peer, char *buf, size_t len) { + if (peer && peer->protocol_config) { + char dumpbuf[65]; + + hexdump(dumpbuf, peer->protocol_config->public_key.p); + snprintf(buf, len, "%.16s", dumpbuf); + return true; + } + else { + return false; + } +} |