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short exponent for non-x64

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orignal 2016-04-05 13:18:25 -04:00
parent 1c507a47d2
commit 405aa906c5
1 changed files with 5 additions and 2 deletions
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7
Crypto.cpp
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@ -200,8 +200,11 @@ namespace crypto
ctx = BN_CTX_new ();
// select random k
BIGNUM * k = BN_new ();
BN_rand_range (k, elgp);
if (BN_is_zero (k)) BN_one (k);
#if defined(__x86_64__)
BN_rand (k, 2048, -1, 1); // full exponent for x64
#else
BN_rand (k, 226, -1, 1); // short exponent of 226 bits
#endif
// caulculate a
a = BN_new ();
BN_mod_exp (a, elgg, k, elgp, ctx);