diff options
| -rw-r--r-- | crypto/src/math/ec/custom/sec/SecP256R1Field.cs | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Field.cs b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs index eab4af956..8e0937134 100644 --- a/crypto/src/math/ec/custom/sec/SecP256R1Field.cs +++ b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs @@ -88,29 +88,37 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec long t08 = tt[8], t09 = tt[9], t10 = tt[10], t11 = tt[11]; long t12 = tt[12], t13 = tt[13], t14 = tt[14], t15 = tt[15]; + long s0 = t08 + t09; + long s1 = t09 + t10; + long s2 = t10 + t11; + long s3 = t11 + t12; + long s4 = t12 + t13; + long s5 = t13 + t14; + long s6 = t14 + t15; + long cc = 0; - cc += (long)tt[0] + t08 + t09 - t11 - t12 - t13 - t14; + cc += (long)tt[0] + s0 - s3 - s5; z[0] = (uint)cc; cc >>= 32; - cc += (long)tt[1] + t09 + t10 - t12 - t13 - t14 - t15; + cc += (long)tt[1] + s1 - s4 - s6; z[1] = (uint)cc; cc >>= 32; - cc += (long)tt[2] + t10 + t11 - t13 - t14 - t15; + cc += (long)tt[2] + s2 - s5 - t15; z[2] = (uint)cc; cc >>= 32; - cc += (long)tt[3] + ((t11 + t12) << 1) + t13 - t15 - t08 - t09; + cc += (long)tt[3] + (s3 << 1) + t13 - t15 - s0; z[3] = (uint)cc; cc >>= 32; - cc += (long)tt[4] + ((t12 + t13) << 1) + t14 - t09 - t10; + cc += (long)tt[4] + (s4 << 1) + t14 - s1; z[4] = (uint)cc; cc >>= 32; - cc += (long)tt[5] + ((t13 + t14) << 1) + t15 - t10 - t11; + cc += (long)tt[5] + (s5 << 1) + t15 - s2; z[5] = (uint)cc; cc >>= 32; - cc += (long)tt[6] + ((t14 + t15) << 1) + t14 + t13 - t08 - t09; + cc += (long)tt[6] + (s6 << 1) + s5 - s0; z[6] = (uint)cc; cc >>= 32; - cc += (long)tt[7] + (t15 << 1) + t15 + t08 - t10 - t11 - t12 - t13; + cc += (long)tt[7] + (t15 << 1) + t15 + t08 - s2 - s4; z[7] = (uint)cc; cc >>= 32; |