Examples with RSAPrivateKeySpec java.security.spec.RSAPrivateKeySpec used on opensource projects

Example 1 with RSAPrivateKeySpec

use of java.security.spec.RSAPrivateKeySpec in project jdk8u_jdk by JetBrains.

the class GenerationTests method getPrivateKey.

private static PrivateKey getPrivateKey(String algo, int keysize) throws Exception {
    KeyFactory kf = KeyFactory.getInstance(algo);
    KeySpec kspec;
    if (algo.equalsIgnoreCase("DSA")) {
        if (keysize == 1024) {
            kspec = new DSAPrivateKeySpec(new BigInteger(DSA_X), new BigInteger(DSA_P), new BigInteger(DSA_Q), new BigInteger(DSA_G));
        } else if (keysize == 2048) {
            kspec = new DSAPrivateKeySpec(new BigInteger(DSA_2048_X), new BigInteger(DSA_2048_P), new BigInteger(DSA_2048_Q), new BigInteger(DSA_2048_G));
        } else
            throw new RuntimeException("Unsupported keysize:" + keysize);
    } else if (algo.equalsIgnoreCase("RSA")) {
        if (keysize == 512) {
            kspec = new RSAPrivateKeySpec(new BigInteger(RSA_MOD), new BigInteger(RSA_PRIV));
        } else {
            kspec = new RSAPrivateKeySpec(new BigInteger(RSA_1024_MOD), new BigInteger(RSA_1024_PRIV));
        }
    } else
        throw new RuntimeException("Unsupported key algorithm " + algo);
    return kf.generatePrivate(kspec);
}

Example 2 with RSAPrivateKeySpec

use of java.security.spec.RSAPrivateKeySpec in project oxAuth by GluuFederation.

the class JweDecrypterImpl method decryptEncryptionKey.

@Override
public byte[] decryptEncryptionKey(String encodedEncryptedKey) throws InvalidJweException {
    if (getKeyEncryptionAlgorithm() == null) {
        throw new InvalidJweException("The key encryption algorithm is null");
    }
    if (encodedEncryptedKey == null) {
        throw new InvalidJweException("The encoded encryption key is null");
    }
    try {
        if (getKeyEncryptionAlgorithm() == KeyEncryptionAlgorithm.RSA_OAEP || getKeyEncryptionAlgorithm() == KeyEncryptionAlgorithm.RSA1_5) {
            if (rsaPrivateKey == null && privateKey == null) {
                throw new InvalidJweException("The RSA private key is null");
            }
            //Cipher cipher = Cipher.getInstance(getKeyEncryptionAlgorithm().getAlgorithm(), "BC");
            Cipher cipher = Cipher.getInstance(getKeyEncryptionAlgorithm().getAlgorithm());
            if (rsaPrivateKey != null) {
                KeyFactory keyFactory = KeyFactory.getInstance(getKeyEncryptionAlgorithm().getFamily(), "BC");
                RSAPrivateKeySpec privKeySpec = new RSAPrivateKeySpec(rsaPrivateKey.getModulus(), rsaPrivateKey.getPrivateExponent());
                java.security.interfaces.RSAPrivateKey privKey = (java.security.interfaces.RSAPrivateKey) keyFactory.generatePrivate(privKeySpec);
                cipher.init(Cipher.DECRYPT_MODE, privKey);
            } else {
                cipher.init(Cipher.DECRYPT_MODE, privateKey);
            }
            byte[] decryptedKey = cipher.doFinal(Base64Util.base64urldecode(encodedEncryptedKey));
            return decryptedKey;
        } else if (getKeyEncryptionAlgorithm() == KeyEncryptionAlgorithm.A128KW || getKeyEncryptionAlgorithm() == KeyEncryptionAlgorithm.A256KW) {
            if (sharedSymmetricKey == null) {
                throw new InvalidJweException("The shared symmetric key is null");
            }
            if (sharedSymmetricKey.length != 16) {
                // 128 bit
                MessageDigest sha = MessageDigest.getInstance("SHA-1");
                sharedSymmetricKey = sha.digest(sharedSymmetricKey);
                sharedSymmetricKey = Arrays.copyOf(sharedSymmetricKey, 16);
            }
            byte[] encryptedKey = Base64Util.base64urldecode(encodedEncryptedKey);
            SecretKeySpec keyEncryptionKey = new SecretKeySpec(sharedSymmetricKey, "AES");
            AESWrapEngine aesWrapEngine = new AESWrapEngine();
            CipherParameters params = new KeyParameter(keyEncryptionKey.getEncoded());
            aesWrapEngine.init(false, params);
            byte[] decryptedKey = aesWrapEngine.unwrap(encryptedKey, 0, encryptedKey.length);
            return decryptedKey;
        } else {
            throw new InvalidJweException("The key encryption algorithm is not supported");
        }
    } catch (NoSuchPaddingException e) {
        throw new InvalidJweException(e);
    } catch (NoSuchAlgorithmException e) {
        throw new InvalidJweException(e);
    } catch (IllegalBlockSizeException e) {
        throw new InvalidJweException(e);
    } catch (BadPaddingException e) {
        throw new InvalidJweException(e);
    } catch (NoSuchProviderException e) {
        throw new InvalidJweException(e);
    } catch (InvalidKeyException e) {
        throw new InvalidJweException(e);
    } catch (InvalidKeySpecException e) {
        throw new InvalidJweException(e);
    } catch (InvalidCipherTextException e) {
        throw new InvalidJweException(e);
    }
}

Example 3 with RSAPrivateKeySpec

use of java.security.spec.RSAPrivateKeySpec in project robovm by robovm.

the class SignatureTest method testSign_SHA384withRSA_Key_Success.

public void testSign_SHA384withRSA_Key_Success() throws Exception {
    KeyFactory kf = KeyFactory.getInstance("RSA");
    RSAPrivateKeySpec keySpec = new RSAPrivateKeySpec(RSA_2048_modulus, RSA_2048_privateExponent);
    PrivateKey privKey = kf.generatePrivate(keySpec);
    Signature sig = Signature.getInstance("SHA384withRSA");
    sig.initSign(privKey);
    sig.update(Vector2Data);
    byte[] signature = sig.sign();
    assertNotNull("Signature must not be null", signature);
    assertTrue("Signature should match expected", Arrays.equals(signature, SHA384withRSA_Vector2Signature));
    RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(RSA_2048_modulus, RSA_2048_publicExponent);
    PublicKey pubKey = kf.generatePublic(pubKeySpec);
    sig.initVerify(pubKey);
    sig.update(Vector2Data);
    assertTrue("Signature must verify correctly", sig.verify(signature));
}

Example 4 with RSAPrivateKeySpec

use of java.security.spec.RSAPrivateKeySpec in project robovm by robovm.

the class SignatureTest method testSign_SHA256withRSA_Key_Success.

public void testSign_SHA256withRSA_Key_Success() throws Exception {
    KeyFactory kf = KeyFactory.getInstance("RSA");
    RSAPrivateKeySpec keySpec = new RSAPrivateKeySpec(RSA_2048_modulus, RSA_2048_privateExponent);
    final PrivateKey privKey = kf.generatePrivate(keySpec);
    Signature sig = Signature.getInstance("SHA256withRSA");
    sig.initSign(privKey);
    sig.update(Vector2Data);
    byte[] signature = sig.sign();
    assertNotNull("Signature must not be null", signature);
    assertTrue("Signature should match expected", Arrays.equals(signature, SHA256withRSA_Vector2Signature));
    RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(RSA_2048_modulus, RSA_2048_publicExponent);
    PublicKey pubKey = kf.generatePublic(pubKeySpec);
    sig.initVerify(pubKey);
    sig.update(Vector2Data);
    assertTrue("Signature must verify correctly", sig.verify(signature));
}

Example 5 with RSAPrivateKeySpec

use of java.security.spec.RSAPrivateKeySpec in project robovm by robovm.

the class SignatureTest method testVerify_SHA1withRSA_Key_InitSignThenInitVerify_Success.

public void testVerify_SHA1withRSA_Key_InitSignThenInitVerify_Success() throws Exception {
    KeyFactory kf = KeyFactory.getInstance("RSA");
    RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(RSA_2048_modulus, RSA_2048_publicExponent);
    PublicKey pubKey = kf.generatePublic(pubKeySpec);
    RSAPrivateKeySpec privKeySpec = new RSAPrivateKeySpec(RSA_2048_modulus, RSA_2048_privateExponent);
    PrivateKey privKey = kf.generatePrivate(privKeySpec);
    Signature sig = Signature.getInstance("SHA1withRSA");
    // Start a signing operation
    sig.initSign(privKey);
    sig.update(Vector2Data);
    // Switch to verify
    sig.initVerify(pubKey);
    sig.update(Vector1Data);
    assertTrue("Signature must match expected signature", sig.verify(SHA1withRSA_Vector1Signature));
}