Example usage for org.bouncycastle.crypto.engines RFC3394WrapEngine unwrap

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines RFC3394WrapEngine unwrap.

Prototype

public byte[] unwrap(byte[] in, int inOff, int inLen) throws InvalidCipherTextException 

Source Link

Usage

From source file:com.github.horrorho.inflatabledonkey.crypto.AESWrap.java

License:Open Source License

public static Optional<byte[]> unwrap(byte[] keyEncryptionKey, byte[] wrappedKey) {
    try {/*from w  ww . j  a v a  2s  .  c o  m*/
        RFC3394WrapEngine engine = new RFC3394WrapEngine(new AESFastEngine());
        engine.init(false, new KeyParameter(keyEncryptionKey));
        return Optional.of(engine.unwrap(wrappedKey, 0, wrappedKey.length));

    } catch (InvalidCipherTextException ex) {
        logger.warn("-- unwrap() - InvalidCipherTextException: {}", ex);
        return Optional.empty();
    }
}

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From source file:com.github.horrorho.inflatabledonkey.crypto.RFC3394Wrap.java

License:Open Source License

public static Optional<byte[]> unwrapAES(byte[] keyEncryptionKey, byte[] wrappedKey) {
    try {//from  w  ww. j  a v  a2 s . c  o m
        RFC3394WrapEngine engine = new RFC3394WrapEngine(new AESFastEngine());
        engine.init(false, new KeyParameter(keyEncryptionKey));
        return Optional.of(engine.unwrap(wrappedKey, 0, wrappedKey.length));

    } catch (InvalidCipherTextException ex) {
        logger.debug("-- unwrap() - InvalidCipherTextException: {}", ex.getMessage());
        return Optional.empty();
    }
}

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