Example usage for java.security.interfaces ECPrivateKey getS

Introduction

In this page you can find the example usage for java.security.interfaces ECPrivateKey getS.

Prototype

BigInteger getS();

Source Link

Document

Returns the private value S.

Usage

From source file:org.cesecore.keys.util.KeyTools.java

/**
 * Test if a private key is extractable (could be stored).
 * //w  ww. ja v  a  2s .co  m
 * @param privK
 *            key to test.
 * @return true if the key is extractable.
 */
public static boolean isPrivateKeyExtractable(final PrivateKey privK) {
    if (privK instanceof RSAPrivateKey) {
        final RSAPrivateKey rsa = (RSAPrivateKey) privK;
        final BigInteger result = rsa.getPrivateExponent();
        return result != null && result.bitLength() > 0;
    }
    if (privK instanceof ECPrivateKey) {
        final ECPrivateKey ec = (ECPrivateKey) privK;
        final BigInteger result = ec.getS();
        return result != null && result.bitLength() > 0;
    }
    if (privK instanceof DHPrivateKey) {
        final DHPrivateKey dh = (DHPrivateKey) privK;
        final BigInteger result = dh.getX();
        return result != null && result.bitLength() > 0;
    }
    if (privK instanceof DSAPrivateKey) {
        final DSAPrivateKey dsa = (DSAPrivateKey) privK;
        final BigInteger result = dsa.getX();
        return result != null && result.bitLength() > 0;
    }
    return false;
}

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