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handle case when encoded key is (p-1)/2

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orignal 2019-12-10 13:40:04 -05:00
parent 4d7b86ca26
commit 36eaaa748c
2 changed files with 14 additions and 1 deletions
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libi2pd/Elligator.cpp
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@ -100,7 +100,7 @@ namespace crypto
BIGNUM * r = BN_CTX_get (ctx); BN_bin2bn (encoded1, 32, r);
if (BN_cmp (r, p12) < 0) // r < (p-1)/2
if (BN_cmp (r, p12) <= 0) // r < (p-1)/2
{
// v = -A/(1+u*r^2)
BIGNUM * v = BN_CTX_get (ctx); BN_mod_sqr (v, r, p, ctx);