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Hakase
2020-04-25 19:56:17 +09:00
parent 2015c00c43
commit 80ef640063
5977 changed files with 13451 additions and 5979 deletions
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crypto/ffc/ffc_key_generate.c
+6 -20
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@@ -21,34 +21,20 @@
*/
int ffc_generate_private_key(BN_CTX *ctx, const FFC_PARAMS *params,
int N, int s, BIGNUM *priv)
{
#ifdef FIPS_MODE
return ffc_generate_private_key_fips(ctx, params, N, s, priv);
#else
do {
if (!BN_priv_rand_range_ex(priv, params->q, ctx))
return 0;
} while (BN_is_zero(priv) || BN_is_one(priv));
return 1;
#endif /* FIPS_MODE */
}
int ffc_generate_private_key_fips(BN_CTX *ctx, const FFC_PARAMS *params,
int N, int s, BIGNUM *priv)
{
int ret = 0, qbits = BN_num_bits(params->q);
BIGNUM *m, *two_powN = NULL;
/* Deal with the edge case where the value of N is not set */
if (N == 0)
N = qbits;
if (s == 0)
s = N / 2;
/* Step (2) : check range of N */
if (N < 2 * s || N > qbits)
return 0;
/* Deal with the edge case where the value of N is not set */
if (N == 0) {
N = qbits;
s = N / 2;
}
two_powN = BN_new();
/* 2^N */
if (two_powN == NULL || !BN_lshift(two_powN, BN_value_one(), N))