| /* |
| * Copyright (c) 2013, Kenneth MacKay |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| */ |
| |
| /* Create a public/private key pair. |
| * Outputs: |
| * public_key - Will be filled in with the public key. |
| * private_key - Will be filled in with the private key. |
| * |
| * Returns true if the key pair was generated successfully, false |
| * if an error occurred. The keys are with the LSB first. |
| */ |
| bool ecc_make_key(u8 public_key[64], u8 private_key[32]); |
| |
| /* Compute a shared secret given your secret key and someone else's |
| * public key. |
| * Note: It is recommended that you hash the result of ecdh_shared_secret |
| * before using it for symmetric encryption or HMAC. |
| * |
| * Inputs: |
| * public_key - The public key of the remote party |
| * private_key - Your private key. |
| * |
| * Outputs: |
| * secret - Will be filled in with the shared secret value. |
| * |
| * Returns true if the shared secret was generated successfully, false |
| * if an error occurred. Both input and output parameters are with the |
| * LSB first. |
| */ |
| bool ecdh_shared_secret(const u8 public_key[64], const u8 private_key[32], |
| u8 secret[32]); |
