1 files changed, 16 insertions, 0 deletions
diff --git a/crypto/src/math/raw/Nat.cs b/crypto/src/math/raw/Nat.cs
index f9e4e6714..5cf5fe218 100644
--- a/crypto/src/math/raw/Nat.cs
+++ b/crypto/src/math/raw/Nat.cs
@@ -384,6 +384,22 @@ namespace Org.BouncyCastle.Math.Raw
return z;
}
+ public static ulong[] FromBigInteger64(int bits, BigInteger x)
+ {
+ if (x.SignValue < 0 || x.BitLength > bits)
+ throw new ArgumentException();
+
+ int len = (bits + 63) >> 6;
+ ulong[] z = Create64(len);
+ int i = 0;
+ while (x.SignValue != 0)
+ {
+ z[i++] = (ulong)x.LongValue;
+ x = x.ShiftRight(64);
+ }
+ return z;
+ }
+
public static uint GetBit(uint[] x, int bit)
{
if (bit == 0)
|
