Examples of java.security.KeyFactory.generatePrivate()

java.security.KeyFactory.generatePrivate()
Generates a private key object from the provided key specification (key material). @param keySpec the specification (key material) of the private key. @return the private key. @exception InvalidKeySpecException if the given key specificationis inappropriate for this key factory to produce a private key.

            curve.decodePoint(Hex.decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
            params);
    
        Signature   sgr = Signature.getInstance("ECDSA", "BC");
        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");
        PrivateKey  sKey = f.generatePrivate(priKeySpec);
        PublicKey   vKey = f.generatePublic(pubKeySpec);
        byte[]      message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };
       
        sgr.initSign(sKey, k);

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            curve.decodePoint(Hex.decode("045894609CCECF9A92533F630DE713A958E96C97CCB8F5ABB5A688A238DEED6DC2D9D0C94EBFB7D526BA6A61764175B99CB6011E2047F9F067293F57F5")), // Q
            params);


        Signature   sgr = Signature.getInstance(algorithm, "BC");
        KeyFactory  f = KeyFactory.getInstance("ECDSA", "BC");
        PrivateKey  sKey = f.generatePrivate(priKeySpec);
        PublicKey   vKey = f.generatePublic(pubKeySpec);
        byte[]      message = new byte[] { (byte)'a', (byte)'b', (byte)'c' };


        sgr.initSign(sKey, k);

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    byte[] privateByte = Base64.decode(keyValue);
    EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(privateByte);


    KeyFactory keyFactory = KeyFactory.getInstance(idAlg);


    return keyFactory.generatePrivate(privateKeySpec);
  }


  public PrivateKey getKey() {
    return this.privateKey[0];
  }

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    }
      byte[] encodedKey = cert.getKey().getBytes();
      byte[] decodedBuffer = com.google.appengine.repackaged.com.google.common.util.Base64.decode(encodedKey);
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(decodedBuffer);
        authSubKey = keyFactory.generatePrivate(privateKeySpec);
    } catch (Exception x) {
        log.log(Level.SEVERE, "AuthSub key generation failed: "  + x.getMessage(), x);
    }
  }
  return authSubKey;

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                BigInteger p = getMPInt();
                BigInteger dP = d.remainder(p.subtract(BigInteger.valueOf(1)));
                BigInteger dQ = d.remainder(q.subtract(BigInteger.valueOf(1)));
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("RSA");
                pub = keyFactory.generatePublic(new RSAPublicKeySpec(n, e));
                prv = keyFactory.generatePrivate(new RSAPrivateCrtKeySpec(n, e, d, p, q, dP, dQ, qInv));
            } else if (KeyPairProvider.SSH_DSS.equals(keyAlg)) {
                BigInteger p = getMPInt();
                BigInteger q = getMPInt();
                BigInteger g = getMPInt();
                BigInteger y = getMPInt();

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                BigInteger g = getMPInt();
                BigInteger y = getMPInt();
                BigInteger x = getMPInt();
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("DSA");
                pub = keyFactory.generatePublic(new DSAPublicKeySpec(y, p, q, g));
                prv = keyFactory.generatePrivate(new DSAPrivateKeySpec(x, p, q, g));
            } else {
                throw new IllegalStateException("Unsupported algorithm: " + keyAlg);
            }
            return new KeyPair(pub, prv);
        } catch (InvalidKeySpecException e) {

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                BigInteger p = getMPInt();
                BigInteger dP = d.remainder(p.subtract(BigInteger.valueOf(1)));
                BigInteger dQ = d.remainder(q.subtract(BigInteger.valueOf(1)));
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("RSA");
                pub = keyFactory.generatePublic(new RSAPublicKeySpec(n, e));
                prv = keyFactory.generatePrivate(new RSAPrivateCrtKeySpec(n, e, d, p, q, dP, dQ, qInv));
            } else if (KeyPairProvider.SSH_DSS.equals(keyAlg)) {
                BigInteger p = getMPInt();
                BigInteger q = getMPInt();
                BigInteger g = getMPInt();
                BigInteger y = getMPInt();

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                BigInteger g = getMPInt();
                BigInteger y = getMPInt();
                BigInteger x = getMPInt();
                KeyFactory keyFactory = SecurityUtils.getKeyFactory("DSA");
                pub = keyFactory.generatePublic(new DSAPublicKeySpec(y, p, q, g));
                prv = keyFactory.generatePrivate(new DSAPrivateKeySpec(x, p, q, g));
            } else if (KeyPairProvider.ECDSA_SHA2_NISTP256.equals(keyAlg)) {
                return extractEC("nistp256", ECCurves.EllipticCurves.nistp256);
            } else if (KeyPairProvider.ECDSA_SHA2_NISTP384.equals(keyAlg)) {
                return extractEC("nistp384", ECCurves.EllipticCurves.nistp384);
            } else if (KeyPairProvider.ECDSA_SHA2_NISTP521.equals(keyAlg)) {

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            throw new InvalidKeySpecException("Couldn't decode EC group");
        }


        KeyFactory keyFactory = SecurityUtils.getKeyFactory("EC");
        PublicKey pubKey = keyFactory.generatePublic(new ECPublicKeySpec(group, spec));
        PrivateKey privKey = keyFactory.generatePrivate(new ECPrivateKeySpec(exponent, spec));
        return new KeyPair(pubKey, privKey);
    }


    private void ensureAvailable(int a) {
        if (available() < a) {

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    }
    try {
      KeyFactory fac = KeyFactory.getInstance("RSA");
      byte[] privateKeyBase64 = Base64.decode(privateKeyString);
      EncodedKeySpec privKeySpec = new PKCS8EncodedKeySpec(privateKeyBase64);
      privateKey = fac.generatePrivate(privKeySpec);
    } catch (NoSuchAlgorithmException e) {
      throw new OAuthException(e);
    } catch (Base64DecoderException e) {
      throw new OAuthException("Invalid private key", e);
    } catch (InvalidKeySpecException e) {

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