Example usage for org.bouncycastle.jce.provider JCEElGamalPublicKey getParameters

Introduction

In this page you can find the example usage for org.bouncycastle.jce.provider JCEElGamalPublicKey getParameters.

Prototype

public ElGamalParameterSpec getParameters() 

Source Link

Usage

From source file:SELSKeyGen.java

License:Open Source License

public static void initPGQ() throws Exception {
    String paramFile = SELS_LIST_PATH + "/params.gpg";
    File file = new File(paramFile);
    if (file.exists()) {
        PGPPublicKey pgpPubKey = readPublicKey(new FileInputStream(paramFile));
        JCEElGamalPublicKey pubKey = (JCEElGamalPublicKey) pgpPubKey.getKey("BC");
        ElGamalParameterSpec spec = pubKey.getParameters();
        p = spec.getP();//w  w w  .j  a v a  2 s  .  c o m
        g = spec.getG();
        orderQ = p.bitLength() / 8;
        paramFlag = 1;

        System.out.println("P: = " + p.toString());
        System.out.println("G: = " + g.toString());

    } // end if
    else {
        paramFile = SELS_LIST_PATH + "/params";
        BufferedReader in = new BufferedReader(new FileReader(paramFile));

        while (true) {
            String line = in.readLine();
            if (line == null)
                break;
            String wlist[] = line.split("\\s");

            if (wlist[0].equals("g:"))
                g = new BigInteger(wlist[1]);
            else if (wlist[0].equals("p:"))
                p = new BigInteger(wlist[1]);
            else if (wlist[0].equals("q:"))
                q = new BigInteger(wlist[1]);
        } // end while
        orderQ = q.bitLength() / 8;
        paramFlag = 0;

    } // end else

}

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