| Johan Hedberg | 05ddb47 | 2014-04-29 13:07:45 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013, Kenneth MacKay |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are |
| 7 | * met: |
| 8 | * * Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * * Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 15 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 16 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 17 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 18 | * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 19 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 20 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 24 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | /* Create a public/private key pair. |
| 28 | * Outputs: |
| 29 | * public_key - Will be filled in with the public key. |
| 30 | * private_key - Will be filled in with the private key. |
| 31 | * |
| 32 | * Returns true if the key pair was generated successfully, false |
| 33 | * if an error occurred. The keys are with the LSB first. |
| 34 | */ |
| 35 | bool ecc_make_key(u8 public_key[64], u8 private_key[32]); |
| 36 | |
| 37 | /* Compute a shared secret given your secret key and someone else's |
| 38 | * public key. |
| 39 | * Note: It is recommended that you hash the result of ecdh_shared_secret |
| 40 | * before using it for symmetric encryption or HMAC. |
| 41 | * |
| 42 | * Inputs: |
| 43 | * public_key - The public key of the remote party |
| 44 | * private_key - Your private key. |
| 45 | * |
| 46 | * Outputs: |
| 47 | * secret - Will be filled in with the shared secret value. |
| 48 | * |
| 49 | * Returns true if the shared secret was generated successfully, false |
| 50 | * if an error occurred. Both input and output parameters are with the |
| 51 | * LSB first. |
| 52 | */ |
| 53 | bool ecdh_shared_secret(const u8 public_key[64], const u8 private_key[32], |
| 54 | u8 secret[32]); |