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authorPeter Dettman <peter.dettman@bouncycastle.org>2015-10-18 14:22:53 +0700
committerPeter Dettman <peter.dettman@bouncycastle.org>2015-10-18 14:22:53 +0700
commit088e423b20074f3483b8c255ffcb724e3fdf4d6a (patch)
tree2cfc4ec51ced9f0807524b904803c2f4f7ffcbfd /crypto/src/math/ec/ECFieldElement.cs
parenthttp://www.bouncycastle.org/jira/browse/BMA-113 (diff)
downloadBouncyCastle.NET-ed25519-088e423b20074f3483b8c255ffcb724e3fdf4d6a.tar.xz
http://www.bouncycastle.org/jira/browse/BMA-82
- use SecureRandom to generate "arbitrary" values
Diffstat (limited to '')
-rw-r--r--crypto/src/math/ec/ECFieldElement.cs3
1 files changed, 1 insertions, 2 deletions
diff --git a/crypto/src/math/ec/ECFieldElement.cs b/crypto/src/math/ec/ECFieldElement.cs

index 4d4fb3e4d..d0e008aab 100644 --- a/crypto/src/math/ec/ECFieldElement.cs +++ b/crypto/src/math/ec/ECFieldElement.cs
@@ -306,13 +306,12 @@ namespace Org.BouncyCastle.Math.EC BigInteger k = legendreExponent.Add(BigInteger.One), qMinusOne = q.Subtract(BigInteger.One); BigInteger U, V; - Random rand = new Random(); do { BigInteger P; do { - P = new BigInteger(q.BitLength, rand); + P = BigInteger.Arbitrary(q.BitLength); } while (P.CompareTo(q) >= 0 || !ModReduce(P.Multiply(P).Subtract(fourX)).ModPow(legendreExponent, q).Equals(qMinusOne));