diff options
Diffstat (limited to 'src/cz/crcs/ectester/common/util/ECUtil.java')
| -rw-r--r-- | src/cz/crcs/ectester/common/util/ECUtil.java | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/cz/crcs/ectester/common/util/ECUtil.java b/src/cz/crcs/ectester/common/util/ECUtil.java index 3c1f138..6c3ad58 100644 --- a/src/cz/crcs/ectester/common/util/ECUtil.java +++ b/src/cz/crcs/ectester/common/util/ECUtil.java @@ -210,4 +210,8 @@ public class ECUtil { ECPrivateKey privkey = new RawECPrivateKey(toScalar(kp), curve.toSpec()); return new KeyPair(pubkey, privkey); } + + public static byte[] toDERSignature(byte[] r, byte[] s) { + return ByteUtil.concatenate(new byte[]{0x30, (byte) (r.length + s.length + 4), 0x02, (byte) r.length}, r, new byte[]{0x02, (byte) s.length}, s); + } } |