From e50ac707316ea6d8059f7036322450727773952d Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Thu, 26 Feb 2015 16:40:56 +0000 Subject: Squashed 'lib/curve25519-donna/' content from commit 28772f3 git-subtree-dir: lib/curve25519-donna git-subtree-split: 28772f37a4b8a57ab9439b9e79b19f9abee686da --- test-sc-curve25519.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 test-sc-curve25519.c (limited to 'test-sc-curve25519.c') diff --git a/test-sc-curve25519.c b/test-sc-curve25519.c new file mode 100644 index 0000000..14a7e3c --- /dev/null +++ b/test-sc-curve25519.c @@ -0,0 +1,72 @@ +#define _GNU_SOURCE + +#include +#include +#include +#include + +extern void curve25519_donna(uint8_t *, const uint8_t *, const uint8_t *); +extern uint64_t tsc_read(); + +int +main(int argc, char **argv) { + uint8_t private_key[32], public[32], peer1[32], peer2[32], output[32]; + static const uint8_t basepoint[32] = {9}; + unsigned i; + uint64_t sum = 0, sum_squares = 0, skipped = 0, mean; + static const unsigned count = 200000; + + memset(private_key, 42, sizeof(private_key)); + + private_key[0] &= 248; + private_key[31] &= 127; + private_key[31] |= 64; + + curve25519_donna(public, private_key, basepoint); + memset(peer1, 0, sizeof(peer1)); + memset(peer2, 255, sizeof(peer2)); + + for (i = 0; i < count; ++i) { + const uint64_t start = tsc_read(); + curve25519_donna(output, peer1, public); + const uint64_t end = tsc_read(); + const uint64_t delta = end - start; + if (delta > 650000) { + // something terrible happened (task switch etc) + skipped++; + continue; + } + sum += delta; + sum_squares += (delta * delta); + } + + mean = sum / ((uint64_t) count); + printf("all 0: mean:%lu sd:%f skipped:%lu\n", + mean, + sqrt((double)(sum_squares/((uint64_t) count) - mean*mean)), + skipped); + + sum = sum_squares = skipped = 0; + + for (i = 0; i < count; ++i) { + const uint64_t start = tsc_read(); + curve25519_donna(output, peer2, public); + const uint64_t end = tsc_read(); + const uint64_t delta = end - start; + if (delta > 650000) { + // something terrible happened (task switch etc) + skipped++; + continue; + } + sum += delta; + sum_squares += (delta * delta); + } + + mean = sum / ((uint64_t) count); + printf("all 1: mean:%lu sd:%f skipped:%lu\n", + mean, + sqrt((double)(sum_squares/((uint64_t) count) - mean*mean)), + skipped); + + return 0; +} -- cgit v1.2.3