diff options
Diffstat (limited to 'crypto/src/util/BigIntegers.cs')
| -rw-r--r-- | crypto/src/util/BigIntegers.cs | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/crypto/src/util/BigIntegers.cs b/crypto/src/util/BigIntegers.cs index 8c2068688..419e98701 100644 --- a/crypto/src/util/BigIntegers.cs +++ b/crypto/src/util/BigIntegers.cs @@ -190,7 +190,7 @@ namespace Org.BouncyCastle.Utilities throw new ArgumentException("must be odd", nameof(M)); if (M.SignValue != 1) throw new ArithmeticException("BigInteger: modulus not positive"); - if (X.SignValue < 0 || X.CompareTo(M) >= 0) + if (X.SignValue < 0 || X.BitLength > M.BitLength) { X = X.Mod(M); } @@ -231,7 +231,7 @@ namespace Org.BouncyCastle.Utilities throw new ArithmeticException("BigInteger: modulus not positive"); if (M.Equals(One)) return Zero; - if (X.SignValue < 0 || X.CompareTo(M) >= 0) + if (X.SignValue < 0 || X.BitLength > M.BitLength) { X = X.Mod(M); } @@ -272,7 +272,7 @@ namespace Org.BouncyCastle.Utilities throw new ArgumentException("must be odd", nameof(M)); if (M.SignValue != 1) throw new ArithmeticException("BigInteger: modulus not positive"); - if (X.SignValue < 0 || X.CompareTo(M) >= 0) + if (X.SignValue < 0 || X.BitLength > M.BitLength) { X = X.Mod(M); } @@ -304,10 +304,12 @@ namespace Org.BouncyCastle.Utilities throw new ArgumentException("must be odd", nameof(M)); if (M.SignValue != 1) throw new ArithmeticException("BigInteger: modulus not positive"); - if (X.SignValue < 0 || X.CompareTo(M) >= 0) + if (X.SignValue < 0 || X.BitLength > M.BitLength) { X = X.Mod(M); } + if (X.Equals(One)) + return true; int bits = M.BitLength; |