rust-secp256k1-unsafe-fast/secp256k1-sys/depend/secp256k1/examples/ecdh.c

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Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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/*************************************************************************
* Written in 2020-2022 by Elichai Turkel *
* To the extent possible under law, the author(s) have dedicated all *
* copyright and related and neighboring rights to the software in this *
* file to the public domain worldwide. This software is distributed *
* without any warranty. For the CC0 Public Domain Dedication, see *
* EXAMPLES_COPYING or https://creativecommons.org/publicdomain/zero/1.0 *
*************************************************************************/
#include <stdio.h>
#include <assert.h>
#include <string.h>
#include <secp256k1.h>
#include <secp256k1_ecdh.h>
#include "random.h"
int main(void) {
unsigned char seckey1[32];
unsigned char seckey2[32];
unsigned char compressed_pubkey1[33];
unsigned char compressed_pubkey2[33];
unsigned char shared_secret1[32];
unsigned char shared_secret2[32];
unsigned char randomize[32];
int return_val;
size_t len;
rustsecp256k1_v0_8_1_pubkey pubkey1;
rustsecp256k1_v0_8_1_pubkey pubkey2;
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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/* Before we can call actual API functions, we need to create a "context". */
rustsecp256k1_v0_8_1_context* ctx = rustsecp256k1_v0_8_1_context_create(SECP256K1_CONTEXT_NONE);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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if (!fill_random(randomize, sizeof(randomize))) {
printf("Failed to generate randomness\n");
return 1;
}
/* Randomizing the context is recommended to protect against side-channel
* leakage See `rustsecp256k1_v0_8_1_context_randomize` in secp256k1.h for more
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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* information about it. This should never fail. */
return_val = rustsecp256k1_v0_8_1_context_randomize(ctx, randomize);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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assert(return_val);
/*** Key Generation ***/
/* If the secret key is zero or out of range (bigger than secp256k1's
* order), we try to sample a new key. Note that the probability of this
* happening is negligible. */
while (1) {
if (!fill_random(seckey1, sizeof(seckey1)) || !fill_random(seckey2, sizeof(seckey2))) {
printf("Failed to generate randomness\n");
return 1;
}
if (rustsecp256k1_v0_8_1_ec_seckey_verify(ctx, seckey1) && rustsecp256k1_v0_8_1_ec_seckey_verify(ctx, seckey2)) {
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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break;
}
}
/* Public key creation using a valid context with a verified secret key should never fail */
return_val = rustsecp256k1_v0_8_1_ec_pubkey_create(ctx, &pubkey1, seckey1);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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assert(return_val);
return_val = rustsecp256k1_v0_8_1_ec_pubkey_create(ctx, &pubkey2, seckey2);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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assert(return_val);
/* Serialize pubkey1 in a compressed form (33 bytes), should always return 1 */
len = sizeof(compressed_pubkey1);
return_val = rustsecp256k1_v0_8_1_ec_pubkey_serialize(ctx, compressed_pubkey1, &len, &pubkey1, SECP256K1_EC_COMPRESSED);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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assert(return_val);
/* Should be the same size as the size of the output, because we passed a 33 byte array. */
assert(len == sizeof(compressed_pubkey1));
/* Serialize pubkey2 in a compressed form (33 bytes) */
len = sizeof(compressed_pubkey2);
return_val = rustsecp256k1_v0_8_1_ec_pubkey_serialize(ctx, compressed_pubkey2, &len, &pubkey2, SECP256K1_EC_COMPRESSED);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
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assert(return_val);
/* Should be the same size as the size of the output, because we passed a 33 byte array. */
assert(len == sizeof(compressed_pubkey2));
/*** Creating the shared secret ***/
/* Perform ECDH with seckey1 and pubkey2. Should never fail with a verified
* seckey and valid pubkey */
return_val = rustsecp256k1_v0_8_1_ecdh(ctx, shared_secret1, &pubkey2, seckey1, NULL, NULL);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
2022-12-20 21:11:14 +00:00
assert(return_val);
/* Perform ECDH with seckey2 and pubkey1. Should never fail with a verified
* seckey and valid pubkey */
return_val = rustsecp256k1_v0_8_1_ecdh(ctx, shared_secret2, &pubkey1, seckey2, NULL, NULL);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
2022-12-20 21:11:14 +00:00
assert(return_val);
/* Both parties should end up with the same shared secret */
return_val = memcmp(shared_secret1, shared_secret2, sizeof(shared_secret1));
assert(return_val == 0);
printf("Secret Key1: ");
print_hex(seckey1, sizeof(seckey1));
printf("Compressed Pubkey1: ");
print_hex(compressed_pubkey1, sizeof(compressed_pubkey1));
printf("\nSecret Key2: ");
print_hex(seckey2, sizeof(seckey2));
printf("Compressed Pubkey2: ");
print_hex(compressed_pubkey2, sizeof(compressed_pubkey2));
printf("\nShared Secret: ");
print_hex(shared_secret1, sizeof(shared_secret1));
/* This will clear everything from the context and free the memory */
rustsecp256k1_v0_8_1_context_destroy(ctx);
Upgrade the vendored libsecp256k1 code `libsecp256k1` v0.2.0 was just released. Update the vendored code using `./vendor-libsecp.sh depend 0_8_0 21ffe4b` ``` git show 21ffe4b commit 21ffe4b22a9683cf24ae0763359e401d1284cc7a (tag: v0.2.0) Merge: 8c949f5 e025ccd Author: Pieter Wuille <pieter@wuille.net> Date: Mon Dec 12 17:00:52 2022 -0500 Merge bitcoin-core/secp256k1#1055: Prepare initial release e025ccdf7473702a76bb13d763dc096548ffefba release: prepare for initial release 0.2.0 (Jonas Nick) 6d1784a2e2c1c5a8d89ffb08a7f76fa15e84fff5 build: add missing files to EXTRA_DIST (Jonas Nick) 13bf1b6b324f2ed1c1fb4c8d17a4febd3556839e changelog: make order of change types match keepachangelog.com (Jonas Nick) b1f992a552785395d2e60b10862626fd11f66f84 doc: improve release process (Jonas Nick) ad39e2dc417f85c1577a6a6a9c519f5c60453def build: change package version to 0.1.0-dev (Jonas Nick) 90618e9263ebc2a0d73d487d6d94fd3af96b973c doc: move CHANGELOG from doc/ to root directory (Jonas Nick) Pull request description: Based on #964 ACKs for top commit: sipa: ACK e025ccdf7473702a76bb13d763dc096548ffefba Tree-SHA512: b9ab71d7362537d383a32b5e321ef44069f00e3e92340375bcd662267bc5a60c2bad60222998e6602cfac24ad65efb23d772eac37c86065036b90ef090b54c49 ``` Requires a new version of `secp256k1-sys`, use v0.8.0 - Update the `secp256k1-sys` manifest (including links field) - Update symbols to use 0_8_0 - Add a changelog entry - depend on the new version in `secp256k1` Which in turn requires a new version of `secp256k1`, use v0.26.0
2022-12-20 21:11:14 +00:00
/* It's best practice to try to clear secrets from memory after using them.
* This is done because some bugs can allow an attacker to leak memory, for
* example through "out of bounds" array access (see Heartbleed), Or the OS
* swapping them to disk. Hence, we overwrite the secret key buffer with zeros.
*
* TODO: Prevent these writes from being optimized out, as any good compiler
* will remove any writes that aren't used. */
memset(seckey1, 0, sizeof(seckey1));
memset(seckey2, 0, sizeof(seckey2));
memset(shared_secret1, 0, sizeof(shared_secret1));
memset(shared_secret2, 0, sizeof(shared_secret2));
return 0;
}