libsodium/test/default/scalarmult6.c
Frank Denis 2bc5874874 Check that the output of X25519 is not the all-zero value
Return -1 if this happens, and mark crypto_scalarmult() as warn_unused_result
Mark dependent functions with warn_unused_result as well
2015-11-17 11:07:33 +01:00

52 lines
1.5 KiB
C

#define TEST_NAME "scalarmult6"
#include "cmptest.h"
unsigned char bobsk_[crypto_scalarmult_SCALARBYTES]
= { 0x5d, 0xab, 0x08, 0x7e, 0x62, 0x4a, 0x8a, 0x4b, 0x79, 0xe1, 0x7f,
0x8b, 0x83, 0x80, 0x0e, 0xe6, 0x6f, 0x3b, 0xb1, 0x29, 0x26, 0x18,
0xb6, 0xfd, 0x1c, 0x2f, 0x8b, 0x27, 0xff, 0x88, 0xe0, 0xeb };
unsigned char alicepk_[crypto_scalarmult_SCALARBYTES]
= { 0x85, 0x20, 0xf0, 0x09, 0x89, 0x30, 0xa7, 0x54, 0x74, 0x8b, 0x7d,
0xdc, 0xb4, 0x3e, 0xf7, 0x5a, 0x0d, 0xbf, 0x3a, 0x0d, 0x26, 0x38,
0x1a, 0xf4, 0xeb, 0xa4, 0xa9, 0x8e, 0xaa, 0x9b, 0x4e, 0x6a };
int main(void)
{
unsigned char *k;
unsigned char *bobsk;
unsigned char *alicepk;
int i;
int ret;
k = (unsigned char *) sodium_malloc(crypto_scalarmult_BYTES);
bobsk = (unsigned char *) sodium_malloc(crypto_scalarmult_SCALARBYTES);
alicepk = (unsigned char *) sodium_malloc(crypto_scalarmult_SCALARBYTES);
assert(k != NULL && bobsk != NULL && alicepk != NULL);
memcpy(bobsk, bobsk_, crypto_scalarmult_SCALARBYTES);
memcpy(alicepk, alicepk_, crypto_scalarmult_SCALARBYTES);
ret = crypto_scalarmult(k, bobsk, alicepk);
assert(ret == 0);
sodium_free(alicepk);
sodium_free(bobsk);
for (i = 0; i < 32; ++i) {
if (i > 0) {
printf(",");
} else {
printf(" ");
}
printf("0x%02x", (unsigned int)k[i]);
if (i % 8 == 7) {
printf("\n");
}
}
sodium_free(k);
return 0;
}