Example usage for org.bouncycastle.jce.spec ECParameterSpec getH

Introduction

In this page you can find the example usage for org.bouncycastle.jce.spec ECParameterSpec getH.

Prototype

public BigInteger getH() 

Source Link

Document

return the cofactor H to the order of G.

Usage

From source file:com.yahoo.athenz.zts.store.DataStore.java

License:Apache License

String getCurveName(org.bouncycastle.jce.spec.ECParameterSpec ecParameterSpec) {

    String curveName = null;//w w w .  j  av  a 2s  . c om
    for (Enumeration names = ECNamedCurveTable.getNames(); names.hasMoreElements();) {

        final String name = (String) names.nextElement();
        final X9ECParameters params = ECNamedCurveTable.getByName(name);

        if (params.getN().equals(ecParameterSpec.getN()) && params.getH().equals(ecParameterSpec.getH())
                && params.getCurve().equals(ecParameterSpec.getCurve())
                && params.getG().equals(ecParameterSpec.getG())) {
            curveName = name;
            break;
        }
    }
    return curveName;
}

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From source file:com.yahoo.athenz.zts.store.DataStoreTest.java

License:Apache License

@Test
public void testGetInvalidCurveName() {
    ChangeLogStore clogStore = new MockZMSFileChangeLogStore("/tmp/zts_server_unit_tests/zts_root", pkey, "0");
    DataStore store = new DataStore(clogStore, null);
    ECParameterSpec spec = Mockito.mock(ECParameterSpec.class);
    Mockito.when(spec.getCurve()).thenReturn(null);
    Mockito.when(spec.getG()).thenReturn(null);
    Mockito.when(spec.getH()).thenReturn(new BigInteger("100"));
    Mockito.when(spec.getN()).thenReturn(new BigInteger("100"));
    assertNull(store.getCurveName(spec));
}

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