fix(crypto): fix assertion

8 months ago · 72acf9d285
parent 4a686d9231
commit 72acf9d285
1 changed files with 1 additions and 1 deletions
--- a/crypto/bignum.c
+++ b/crypto/bignum.c
@ -886,7 +886,7 @@ void bn_sqrt(bignum256 *x, const bignum256 *prime) {
  // http://en.wikipedia.org/wiki/Quadratic_residue#Prime_or_prime_power_modulus
  // If prime % 4 == 3, then sqrt(x) % prime == x**((prime+1)//4) % prime

-  assert(prime->val[BN_LIMBS - 1] % 4 == 3);
+  assert(prime->val[0] % 4 == 3);

  // e = (prime + 1) // 4
  bignum256 e = {0};