Package javax.crypto

Examples of javax.crypto.KeyAgreement.generateSecret()

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      PublicKey publicKey = keyFact.generatePublic(x509KeySpec);

      KeyAgreement ka = KeyAgreement.getInstance(ALGORITHM);
      ka.init(privateKey);
      ka.doPhase(publicKey, true);
      byte[] secret = ka.generateSecret();

      MessageDigest sha = MessageDigest.getInstance(DIGEST);
      byte[] hash = sha.digest(secret);
      byte[] symKey = new byte[keySize / 8];
      System.arraycopy(hash, 0, symKey, 0, symKey.length);
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            KeyAgreement ka = null;
            ka = KeyAgreement.getInstance("ECDH", curve.kaProvider);
            ka.init(key.getPrivate());
            ka.doPhase(pubkey, true);

            return ka.generateSecret();
        } catch (InvalidKeyException e) {
            Logger.error(this, "InvalidKeyException : "+e.getMessage(),e);
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            Logger.error(this, "NoSuchAlgorithmException : "+e.getMessage(),e);
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        cKeyAgree.doPhase(ba, true);

        BigInteger aShared = new BigInteger(aKeyAgree.generateSecret());
        BigInteger bShared = new BigInteger(bKeyAgree.generateSecret());
        BigInteger cShared = new BigInteger(cKeyAgree.generateSecret());

        if (!aShared.equals(bShared))
        {
            fail(size + " bit 3-way test failed (a and b differ)");
        }
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        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail(size + " bit 2-way test failed");
        }
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        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        SecretKey k1 = aKeyAgree.generateSecret(PKCSObjectIdentifiers.id_alg_CMS3DESwrap.getId());
        SecretKey k2 = bKeyAgree.generateSecret(PKCSObjectIdentifiers.id_alg_CMS3DESwrap.getId());
       
        // TODO Compare k1 and k2?
    }

    private Object serializeDeserialize(Object o)
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        cKeyAgree.doPhase(ba, true);

        BigInteger aShared = new BigInteger(aKeyAgree.generateSecret());
        BigInteger bShared = new BigInteger(bKeyAgree.generateSecret());
        BigInteger cShared = new BigInteger(cKeyAgree.generateSecret());

        if (!aShared.equals(bShared))
        {
            fail(size + " bit 3-way test failed (a and b differ)");
        }
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        //
        aKeyAgree.doPhase(bKeyPair.getPublic(), true);
        bKeyAgree.doPhase(aKeyPair.getPublic(), true);

        BigInteger  k1 = new BigInteger(aKeyAgree.generateSecret());
        BigInteger  k2 = new BigInteger(bKeyAgree.generateSecret());

        if (!k1.equals(k2))
        {
            fail(algorithm + " 2-way test failed");
        }
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    {
        try
        {
            KeyAgreement aKeyAgree = KeyAgreement.getInstance("DH", "BC");

            aKeyAgree.generateSecret("DES");
        }
        catch (IllegalStateException e)
        {
            // okay
        }
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        KeyAgreement keyAgreement = KeyAgreement.getInstance("DH", "BC");

        keyAgreement.init(kp.getPrivate());
        keyAgreement.doPhase(kp.getPublic(), true);

        SecretKey key = keyAgreement.generateSecret("DES");

        if (key.getEncoded().length != 8)
        {
            fail("DES length wrong");
        }
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        if (!DESKeySpec.isParityAdjusted(key.getEncoded(), 0))
        {
            fail("DES parity wrong");
        }

        key = keyAgreement.generateSecret("DESEDE");

        if (key.getEncoded().length != 24)
        {
            fail("DESEDE length wrong");
        }
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