Examples with ECKeyPair org.whispersystems.libsignal.ecc.ECKeyPair used on opensource projects

Example 6 with ECKeyPair

use of org.whispersystems.libsignal.ecc.ECKeyPair in project Signal-Android by WhisperSystems.

the class AsymmetricMasterCipher method encryptBytes.

public byte[] encryptBytes(byte[] body) {
    try {
        ECPublicKey theirPublic = asymmetricMasterSecret.getDjbPublicKey();
        ECKeyPair ourKeyPair = Curve.generateKeyPair();
        byte[] secret = Curve.calculateAgreement(theirPublic, ourKeyPair.getPrivateKey());
        MasterCipher masterCipher = getMasterCipherForSecret(secret);
        byte[] encryptedBodyBytes = masterCipher.encryptBytes(body);
        PublicKey ourPublicKey = new PublicKey(31337, ourKeyPair.getPublicKey());
        byte[] publicKeyBytes = ourPublicKey.serialize();
        return Util.combine(publicKeyBytes, encryptedBodyBytes);
    } catch (InvalidKeyException e) {
        throw new AssertionError(e);
    }
}