mirror of
https://github.com/kmackay/micro-ecc.git
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103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/* Copyright 2013, Kenneth MacKay. Licensed under the BSD 2-clause license. */
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#if !TARGET_LPC11XX
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#include "ecc.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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void vli_print(uint32_t *p_vli, unsigned int p_size)
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{
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while(p_size)
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{
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printf("%08X ", (unsigned)p_vli[p_size - 1]);
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--p_size;
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}
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}
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int randfd;
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void getRandomBytes(void *p_dest, unsigned p_size)
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{
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if(read(randfd, p_dest, p_size) != (int)p_size)
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{
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printf("Failed to get random bytes.\n");
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}
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}
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int main()
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{
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EccPoint l_Q1, l_Q2; /* public keys */
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uint32_t l_secret1[NUM_ECC_DIGITS];
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uint32_t l_secret2[NUM_ECC_DIGITS];
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uint64_t l_total;
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int i;
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uint32_t l_shared1[NUM_ECC_DIGITS];
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uint32_t l_shared2[NUM_ECC_DIGITS];
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uint32_t l_random1[NUM_ECC_DIGITS];
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uint32_t l_random2[NUM_ECC_DIGITS];
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randfd = open("/dev/urandom", O_RDONLY);
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if(randfd == -1)
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{
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printf("No access to urandom\n");
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return -1;
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}
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printf("Testing 256 random private key pairs\n");
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l_total = 0;
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for(i=0; i<256; ++i)
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{
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printf(".");
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fflush(stdout);
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getRandomBytes((char *)l_secret1, NUM_ECC_DIGITS * sizeof(uint32_t));
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getRandomBytes((char *)l_secret2, NUM_ECC_DIGITS * sizeof(uint32_t));
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getRandomBytes((char *)l_random1, NUM_ECC_DIGITS * sizeof(uint32_t));
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getRandomBytes((char *)l_random2, NUM_ECC_DIGITS * sizeof(uint32_t));
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ecc_make_key(&l_Q1, l_secret1, l_secret1);
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ecc_make_key(&l_Q2, l_secret2, l_secret2);
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if(!ecdh_shared_secret(l_shared1, &l_Q1, l_secret2, l_random1))
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{
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printf("shared_secret() failed (1)\n");
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return 1;
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}
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if(!ecdh_shared_secret(l_shared2, &l_Q2, l_secret1, l_random2))
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{
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printf("shared_secret() failed (2)\n");
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return 1;
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}
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if(memcmp(l_shared1, l_shared2, sizeof(l_shared1)) != 0)
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{
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printf("Shared secrets are not identical!\n");
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printf("Shared secret 1 = ");
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vli_print(l_shared1, NUM_ECC_DIGITS);
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printf("\n");
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printf("Shared secret 2 = ");
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vli_print(l_shared2, NUM_ECC_DIGITS);
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printf("\n");
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printf("Private key 1 = ");
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vli_print(l_secret1, NUM_ECC_DIGITS);
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printf("\n");
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printf("Private key 2 = ");
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vli_print(l_secret2, NUM_ECC_DIGITS);
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printf("\n");
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}
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}
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printf("\n");
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return 0;
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}
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#endif /* !TARGET_LPC11XX */
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