Example usage for org.bouncycastle.crypto.agreement.jpake JPAKERound1Payload getParticipantId

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.agreement.jpake JPAKERound1Payload getParticipantId.

Prototype

public String getParticipantId() 

Source Link

Usage

From source file:com.distrimind.util.crypto.P2PJPAKESecretMessageExchanger.java

License:Open Source License

@Override
protected byte[] getDataToSend(int stepNumber) throws Exception {
    valid = false;//from  ww  w  .j a va 2  s. c  om
    switch (stepNumber) {
    case 0:
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            try (DataOutputStream oos = new DataOutputStream(baos)) {

                JPAKERound1Payload toSerialize = jpake.createRound1PayloadToSend();
                byte[] tab = toSerialize.getGx1().toByteArray();
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);
                tab = toSerialize.getGx2().toByteArray();
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);

                BigInteger[] b = toSerialize.getKnowledgeProofForX1();
                if (b == null)
                    oos.writeInt(0);
                else
                    oos.writeInt(b.length);
                if (b == null)
                    throw new IOException();

                for (BigInteger bi : b) {
                    tab = bi.toByteArray();
                    if (tab.length > Short.MAX_VALUE)
                        throw new IOException();
                    oos.writeShort(tab.length);
                    oos.write(tab);
                }
                b = toSerialize.getKnowledgeProofForX2();
                if (b == null)
                    oos.writeInt(0);
                else
                    oos.writeInt(b.length);
                if (b == null)
                    throw new IOException();

                for (BigInteger bi : b) {
                    tab = bi.toByteArray();
                    if (tab.length > Short.MAX_VALUE)
                        throw new IOException();
                    oos.writeShort(tab.length);
                    oos.write(tab);

                }
                tab = toSerialize.getParticipantId().getBytes(Charset.forName("utf-8"));
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);
            }
            valid = true;
            return baos.toByteArray();
        }

    case 1:
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            try (DataOutputStream oos = new DataOutputStream(baos)) {

                JPAKERound2Payload toSerialize = jpake.createRound2PayloadToSend();
                byte[] tab = toSerialize.getA().toByteArray();
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);

                BigInteger[] b = toSerialize.getKnowledgeProofForX2s();
                if (b == null)
                    oos.writeInt(0);
                else
                    oos.writeInt(b.length);
                if (b == null)
                    throw new IOException();

                for (BigInteger bi : b) {
                    tab = bi.toByteArray();
                    if (tab.length > Short.MAX_VALUE)
                        throw new IOException();
                    oos.writeShort(tab.length);
                    oos.write(tab);
                }
                tab = toSerialize.getParticipantId().getBytes(Charset.forName("utf-8"));
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);
            }
            valid = true;
            return baos.toByteArray();
        }

    case 2:
        try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
            try (DataOutputStream oos = new DataOutputStream(baos)) {

                keyMaterial = jpake.calculateKeyingMaterial();
                JPAKERound3Payload toSerialize = jpake.createRound3PayloadToSend(keyMaterial);
                byte[] tab = toSerialize.getMacTag().toByteArray();
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);

                tab = toSerialize.getParticipantId().getBytes(Charset.forName("utf-8"));
                if (tab.length > Short.MAX_VALUE)
                    throw new IOException();
                oos.writeShort(tab.length);
                oos.write(tab);
            }
            valid = true;
            return baos.toByteArray();
        }

    default:
        throw new IllegalAccessError();

    }
}

---