Example usage for org.bouncycastle.asn1.x9 ECNamedCurveTable getNames

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.x9 ECNamedCurveTable getNames.

Prototype

public static Enumeration getNames() 

Source Link

Document

return an enumeration of the names of the available curves.

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  a2 s .c o  m*/
    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:org.xipki.security.p11.sun.SunNamedCurveExtender.java

License:Open Source License

private static void addNamedCurves_jdk17() {
    final Class<?>[] Param_NamedCurve_add = new Class[] { String.class, String.class, int.class, String.class,
            String.class, String.class, String.class, String.class, String.class, int.class };
    final Class<?>[] Param_getCurve = new Class[] { String.class };

    Method method_add = getMethod(class_NamedCurve, "add", Param_NamedCurve_add);
    if (method_add == null) {
        return;//from www  .  j  a v  a2s . c  o  m
    }

    Method method_getCurve = getMethod(class_NamedCurve, "getECParameterSpec", Param_getCurve);
    if (method_getCurve == null) {
        return;
    }

    Field field_SPLIT_PATTERN = getField(class_NamedCurve, "SPLIT_PATTERN");
    if (field_SPLIT_PATTERN == null) {
        return;
    }

    try {
        field_SPLIT_PATTERN.set(null, SPLIT_PATTERN);
    } catch (IllegalArgumentException | IllegalAccessException e) {
        final String message = "could not set Field SPLIT_PATTERN";
        if (LOG.isWarnEnabled()) {
            LOG.warn(LogUtil.buildExceptionLogFormat(message), e.getClass().getName(), e.getMessage());
        }
        LOG.debug(message, e);
        return;
    }

    Set<String> processedCurveOids = new HashSet<>();
    Map<String, String> addedCurves = new HashMap<>();

    Enumeration<?> curveNames = ECNamedCurveTable.getNames();
    while (curveNames.hasMoreElements()) {
        String curveName = (String) curveNames.nextElement();
        ASN1ObjectIdentifier curveId = getCurveId(curveName);

        if (curveId == null) {
            LOG.info("cound not find curve OID for curve {}, ignore it", curveName);
            continue;
        }

        String curveDesc = "named curve " + curveName + " (" + curveId + ")";

        if (processedCurveOids.contains(curveId.getId())) {
            LOG.debug("{} is already processed, ignore it", curveDesc);
            continue;
        }

        processedCurveOids.add(curveId.getId());

        if (curve_isRegistered(method_getCurve, curveId)) {
            LOG.debug("{} is already registered, ignore it", curveDesc);
            continue;
        }

        X9ECParameters params = ECNamedCurveTable.getByOID(curveId);
        ECCurve curve = params.getCurve();

        if (curve instanceof ECCurve.Fp || curve instanceof ECCurve.F2m) {
            CurveData c = new CurveData(params);
            boolean added = NamedCurve_add(method_add, curveName, curveId.getId(), c.type, c.sfield, c.a, c.b,
                    c.x, c.y, c.n, c.h);

            if (added) {
                LOG.debug("added {}", curveDesc);
                addedCurves.put(curveName, curveId.getId());
            } else {
                LOG.warn("could not add {}", curveDesc);
            }
        } else {
            LOG.info("unknown curve type {}", curve.getClass().getName());
        }
    }

    try {
        field_SPLIT_PATTERN.set(null, null);
    } catch (IllegalArgumentException | IllegalAccessException e) {
        final String message = "could not set Field SPLIT_PATTERN";
        if (LOG.isWarnEnabled()) {
            LOG.warn(LogUtil.buildExceptionLogFormat(message), e.getClass().getName(), e.getMessage());
        }
        LOG.debug(message, e);
        return;
    }

    logAddedCurves(addedCurves);
}

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From source file:org.xipki.security.p11.sun.SunNamedCurveExtender.java

License:Open Source License

private static void addNamedCurves_jdk18on() {
    final Class<?>[] Param_CurveDB_add = new Class[] { String.class, String.class, int.class, String.class,
            String.class, String.class, String.class, String.class, String.class, int.class, Pattern.class };
    final Class<?>[] Param_getCurve = new Class[] { String.class };

    Method method_add = getMethod(class_CurveDB, "add", Param_CurveDB_add);
    if (method_add == null) {
        return;//from  ww w .jav  a2  s. c o  m
    }

    Method method_getCurve = getMethod(class_CurveDB, "lookup", Param_getCurve);
    if (method_getCurve == null) {
        return;
    }

    Field field_oidMap = getField(class_CurveDB, "oidMap");
    if (field_oidMap == null) {
        return;
    }

    Field field_specCollection = getField(class_CurveDB, "specCollection");
    if (field_specCollection == null) {
        return;
    }

    Set<String> processedCurveOids = new HashSet<>();
    Map<String, String> addedCurves = new HashMap<>();

    Enumeration<?> curveNames = ECNamedCurveTable.getNames();
    while (curveNames.hasMoreElements()) {
        String curveName = (String) curveNames.nextElement();
        ASN1ObjectIdentifier curveId = getCurveId(curveName);
        if (curveId == null) {
            LOG.debug("cound not find curve OID for curve {}, ignore it", curveName);
            continue;
        }

        String curveDesc = "named curve " + curveName + " (" + curveId + ")";

        if (processedCurveOids.contains(curveId.getId())) {
            LOG.debug("{} is already processed, ignore it", curveDesc);
            continue;
        }

        processedCurveOids.add(curveId.getId());

        if (curve_isRegistered(method_getCurve, curveId)) {
            LOG.info("{} is already registered, ignore it", curveDesc);
            continue;
        }

        X9ECParameters params = ECNamedCurveTable.getByOID(curveId);
        ECCurve curve = params.getCurve();
        if (curve instanceof ECCurve.Fp || curve instanceof ECCurve.F2m) {
            CurveData c = new CurveData(params);
            boolean added = CurveDB_add(method_add, curveName, curveId.getId(), c.type, c.sfield, c.a, c.b, c.x,
                    c.y, c.n, c.h);

            if (added) {
                LOG.debug("added {}", curveDesc);
                addedCurves.put(curveName, curveId.getId());
            } else {
                LOG.warn("could not add {}", curveDesc);
            }
        } else {
            LOG.info("unknown curve type {}", curve.getClass().getName());
        }
    }

    try {
        Map<?, ?> oidMap = (Map<?, ?>) field_oidMap.get(null);
        Collection<?> namedCurves = Collections.unmodifiableCollection(oidMap.values());

        field_specCollection.set(null, namedCurves);
    } catch (IllegalArgumentException | IllegalAccessException | ClassCastException e) {
        final String message = "could not update change the value of field CurveDB.specCollection.";
        if (LOG.isWarnEnabled()) {
            LOG.warn(LogUtil.buildExceptionLogFormat(message), e.getClass().getName(), e.getMessage());
        }
        LOG.debug(message, e);
    }

    logAddedCurves(addedCurves);
}

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