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Merge pull request #11 from SamouraiDev/master

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improve group value test for bip47 addresses
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craigraw 2023-02-20 11:54:33 +02:00 committed by GitHub
commit 50fdb71bf3
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1 changed files with 2 additions and 2 deletions
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src/main/java/com/sparrowwallet/drongo/bip47/PaymentAddress.java
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@ -71,7 +71,7 @@ public class PaymentAddress {
private BigInteger addSecp256k1(BigInteger b1, BigInteger b2) { private BigInteger addSecp256k1(BigInteger b1, BigInteger b2) {
BigInteger ret = b1.add(b2); BigInteger ret = b1.add(b2);
if(ret.bitLength() > CURVE.getN().bitLength()) { if(ret.compareTo(CURVE.getN()) > 0) {
return ret.mod(CURVE.getN()); return ret.mod(CURVE.getN());
} }
@ -83,7 +83,7 @@ public class PaymentAddress {
} }
private boolean isSecp256k1(BigInteger b) { private boolean isSecp256k1(BigInteger b) {
return b.compareTo(BigInteger.ONE) > 0 && b.bitLength() <= CURVE.getN().bitLength(); return (b.compareTo(BigInteger.ONE) > 0) && (b.compareTo(CURVE.getN()) < 0);
} }
private BigInteger secretPoint() throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, NotSecp256k1Exception { private BigInteger secretPoint() throws InvalidKeyException, NoSuchAlgorithmException, NoSuchProviderException, InvalidKeySpecException, NotSecp256k1Exception {