diff options
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs index 3152f1bee..6837ca26e 100644 --- a/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs +++ b/crypto/src/math/ec/custom/sec/SecP224R1FieldElement.cs @@ -132,6 +132,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec SecP224R1Field.Negate(c, nc); uint[] r = Mod.Random(SecP224R1Field.P); + uint[] t = Nat224.Create(); for (;;) { @@ -140,7 +141,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec uint[] e1 = Nat224.Create(); e1[0] = 1; uint[] f1 = Nat224.Create(); - RP(nc, d1, e1, f1); + RP(nc, d1, e1, f1, t); uint[] d0 = Nat224.Create(); uint[] e0 = Nat224.Create(); @@ -150,7 +151,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec Nat224.Copy(d1, d0); Nat224.Copy(e1, e0); - RS(d1, e1, f1); + RS(d1, e1, f1, t); if (Nat224.IsZero(d1)) { @@ -192,9 +193,8 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec return Q.GetHashCode() ^ Arrays.GetHashCode(x, 0, 7); } - private static void RM(uint[] nc, uint[] d0, uint[] e0, uint[] d1, uint[] e1, uint[] f1) + private static void RM(uint[] nc, uint[] d0, uint[] e0, uint[] d1, uint[] e1, uint[] f1, uint[] t) { - uint[] t = Nat224.Create(); SecP224R1Field.Multiply(e1, e0, t); SecP224R1Field.Multiply(t, nc, t); SecP224R1Field.Multiply(d1, d0, f1); @@ -207,7 +207,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec SecP224R1Field.Multiply(f1, nc, f1); } - private static void RP(uint[] nc, uint[] d1, uint[] e1, uint[] f1) + private static void RP(uint[] nc, uint[] d1, uint[] e1, uint[] f1, uint[] t) { Nat224.Copy(nc, f1); @@ -222,20 +222,19 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec int j = 1 << i; while (--j >= 0) { - RS(d1, e1, f1); + RS(d1, e1, f1, t); } - RM(nc, d0, e0, d1, e1, f1); + RM(nc, d0, e0, d1, e1, f1, t); } } - private static void RS(uint[] d, uint[] e, uint[] f) + private static void RS(uint[] d, uint[] e, uint[] f, uint[] t) { SecP224R1Field.Multiply(e, d, e); - uint[] t = Nat224.Create(); + SecP224R1Field.Twice(e, e); SecP224R1Field.Square(d, t); SecP224R1Field.Add(f, t, d); - SecP224R1Field.Twice(e, e); SecP224R1Field.Multiply(f, t, f); uint c = Nat.ShiftUpBits(7, f, 2, 0); SecP224R1Field.Reduce32(c, f); |