52 lines
2.1 KiB
C
52 lines
2.1 KiB
C
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/*
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* Copyright (c) 2009 Chris K Cockrum <ckc@cockrum.net>
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*
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* Copyright (c) 2013 Jens Trillmann <jtrillma@tzi.de>
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* Copyright (c) 2013 Marc Müller-Weinhardt <muewei@tzi.de>
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* Copyright (c) 2013 Lars Schmertmann <lars@tzi.de>
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* Copyright (c) 2013 Hauke Mehrtens <hauke@hauke-m.de>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*
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* This implementation is based in part on the paper Implementation of an
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* Elliptic Curve Cryptosystem on an 8-bit Microcontroller [0] by
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* Chris K Cockrum <ckc@cockrum.net>.
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*
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* [0]: http://cockrum.net/Implementation_of_ECC_on_an_8-bit_microcontroller.pdf
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*
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* This is a efficient ECC implementation on the secp256r1 curve for 32 Bit CPU
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* architectures. It provides basic operations on the secp256r1 curve and support
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* for ECDH and ECDSA.
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*/
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#include <inttypes.h>
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extern const uint32_t ecc_prime_m[8];
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extern const uint32_t ecc_prime_r[8];
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//debug function to print long numbers
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void ecc_printNumber(const uint32_t *x, int numberLength);
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void ecc_setRandom(uint32_t *secret);
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#ifdef CONTIKI
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#undef assert
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#define assert(e) ((e) ? (void)0 : test_assert(__FILE__, __LINE__))
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void test_assert(const char *, int);
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#endif
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