Examples of org.bouncycastle.crypto.agreement.ECDHBasicAgreement

Package org.bouncycastle.crypto.agreement

Examples of org.bouncycastle.crypto.agreement.ECDHBasicAgreement

org.bouncycastle.crypto.agreement.ECDHBasicAgreement
P1363 7.2.1 ECSVDP-DH ECSVDP-DH is Elliptic Curve Secret Value Derivation Primitive, Diffie-Hellman version. It is based on the work of [DH76], [Mil86], and [Kob87]. This primitive derives a shared secret value from one party's private key and another party's public key, where both have the same set of EC domain parameters. If two parties correctly execute this primitive, they will produce the same output. This primitive can be invoked by a scheme to derive a shared secret key; specifically, it may be used with the schemes ECKAS-DH1 and DL/ECKAS-DH2. It assumes that the input keys are valid (see also Section 7.2.2).

    public static class DH
        extends JCEECDHKeyAgreement
    {
        public DH()
        {
            super(new ECDHBasicAgreement());
        }

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        extends JCEIESCipher
    {
        public ECIES()
        {
            super(new IESEngine(
                   new ECDHBasicAgreement(),
                   new KDF2BytesGenerator(new SHA1Digest()),
                   new HMac(new SHA1Digest())));
        }

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    public static class DH
        extends JCEECDHKeyAgreement
    {
        public DH()
        {
            super(new ECDHBasicAgreement());
        }

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    public static class DHwithSHA1KDF
        extends JCEECDHKeyAgreement
    {
        public DHwithSHA1KDF()
        {
            super(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA1Digest()));
        }

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    private static byte[] _cryptIES(byte[] input, Key recipient,
            boolean forEncryption) throws InvalidKeyException,
            IllegalBlockSizeException, BadPaddingException {
        IESCipher cipher = new IESCipher(new IESEngine(
                new ECDHBasicAgreement(), new KDF2BytesGenerator(
                        new SHA1Digest()), new HMac(new SHA256Digest()),
                new PaddedBufferedBlockCipher(new CBCBlockCipher(
                        new AESEngine()))));


        cipher.engineInit(forEncryption ? Cipher.ENCRYPT_MODE

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        extends JCEIESCipher
    {
        public BrokenECIES()
        {
            super(new IESEngine(
                   new ECDHBasicAgreement(),
                   new BrokenKDF2BytesGenerator(new SHA1Digest()),
                   new HMac(new SHA1Digest())));
        }

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        extends JCEIESCipher
    {
        public ECIES()
        {
            super(new IESEngine(
                   new ECDHBasicAgreement(),
                   new KDF2BytesGenerator(new SHA1Digest()),
                   new HMac(new SHA1Digest())));
        }

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    public static class DH
        extends KeyAgreement
    {
        public DH()
        {
            super(new ECDHBasicAgreement());
        }

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    public static class DHwithSHA1KDF
        extends KeyAgreement
    {
        public DHwithSHA1KDF()
        {
            super(new ECDHBasicAgreement(), new ECDHKEKGenerator(new SHA1Digest()));
        }

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        extends JCEIESCipher
    {
        public BrokenECIES()
        {
            super(new IESEngine(
                   new ECDHBasicAgreement(),
                   new BrokenKDF2BytesGenerator(new SHA1Digest()),
                   new HMac(new SHA1Digest())));
        }

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