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| author | J08nY | 2018-11-28 01:04:31 +0100 |
|---|---|---|
| committer | J08nY | 2018-11-28 01:04:31 +0100 |
| commit | ebe40e2fdd5e28cdabe05250422f3149e188641a (patch) | |
| tree | fbf29423e8053c6a7267d600d1630fefb1bf1a1b /src/cz/crcs/ectester/common/util/ECUtil.java | |
| parent | 7e9917742785a9fd532a52231e95ddad5775555f (diff) | |
| parent | 12845c8c41eff5f598dc8e843920f5bb4638775d (diff) | |
| download | ECTester-ebe40e2fdd5e28cdabe05250422f3149e188641a.tar.gz ECTester-ebe40e2fdd5e28cdabe05250422f3149e188641a.tar.zst ECTester-ebe40e2fdd5e28cdabe05250422f3149e188641a.zip | |
Merge branch 'devel'
Diffstat (limited to 'src/cz/crcs/ectester/common/util/ECUtil.java')
| -rw-r--r-- | src/cz/crcs/ectester/common/util/ECUtil.java | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cz/crcs/ectester/common/util/ECUtil.java b/src/cz/crcs/ectester/common/util/ECUtil.java index 6c3ad58..1706ca0 100644 --- a/src/cz/crcs/ectester/common/util/ECUtil.java +++ b/src/cz/crcs/ectester/common/util/ECUtil.java @@ -31,6 +31,14 @@ public class ECUtil { return raw; } + public static byte[] toX962Compressed(byte[][] point) { + if (point.length != 2) { + return null; + } + byte ybit = (byte) (point[1][point[1].length - 1] % 2); + return ByteUtil.concatenate(new byte[]{(byte) (0x02 | ybit)}, point[0]); + } + public static byte[] toX962Compressed(ECPoint point, int bits) { if (point.equals(ECPoint.POINT_INFINITY)) { return new byte[]{0}; |
