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Fix bn.c.

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NIIBE Yutaka
2019-06-18 11:10:33 +09:00
parent cc0d59cfe6
commit 9180c35420
2 changed files with 15 additions and 12 deletions
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4
ChangeLog
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@@ -1,3 +1,7 @@
2019-06-18 NIIBE Yutaka <gniibe@fsij.org>
* src/bn.c (bn256_random): More portable.
2019-04-03 NIIBE Yutaka <gniibe@fsij.org>
* tests: Factor out tests into classes.

23
src/bn.c
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@@ -1,7 +1,8 @@
/*
* bn.c -- 256-bit (and 512-bit) bignum calculation
*
* Copyright (C) 2011, 2013, 2014 Free Software Initiative of Japan
* Copyright (C) 2011, 2013, 2014, 2019
* Free Software Initiative of Japan
* Author: NIIBE Yutaka <gniibe@fsij.org>
*
* This file is a part of Gnuk, a GnuPG USB Token implementation.
@@ -412,17 +413,15 @@ bn256_cmp (const bn256 *A, const bn256 *B)
void
bn256_random (bn256 *X)
{
const uint8_t *rand = random_bytes_get ();
int i, j;
const uint8_t *rand;
X->word[7] = ((uint32_t *)rand)[7];
X->word[6] = ((uint32_t *)rand)[6];
X->word[5] = ((uint32_t *)rand)[5];
X->word[4] = ((uint32_t *)rand)[4];
X->word[3] = ((uint32_t *)rand)[3];
X->word[2] = ((uint32_t *)rand)[2];
X->word[1] = ((uint32_t *)rand)[1];
X->word[0] = ((uint32_t *)rand)[0];
random_bytes_free (rand);
for (i = 0; i < 256/256; i++)
{
rand = random_bytes_get ();
for (j = 0; j < BN256_WORDS; j++)
X->word[i*BN256_WORDS+j] = ((uint32_t *)rand)[j];
random_bytes_free (rand);
}
}
#endif