@Override protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException { if (params != null) { throw new InvalidAlgorithmParameterException( "unknown param type: " + params.getClass().getName()); } engineInitInternal(opmode, key); }
protected void engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom random) throws InvalidKeyException, InvalidAlgorithmParameterException { CipherParameters param; if (params == null || params instanceof OAEPParameterSpec) { if (key instanceof RSAPublicKey) { if (privateKeyOnly && opmode == Cipher.ENCRYPT_MODE) { throw new InvalidKeyException("mode 1 requires RSAPrivateKey"); } param = RSAUtil.generatePublicKeyParameter((RSAPublicKey) key); } else if (key instanceof RSAPrivateKey) { if (publicKeyOnly && opmode == Cipher.ENCRYPT_MODE) { throw new InvalidKeyException("mode 2 requires RSAPublicKey"); } param = RSAUtil.generatePrivateKeyParameter((RSAPrivateKey) key); } else { throw new InvalidKeyException("unknown key type passed to RSA"); } if (params != null) { OAEPParameterSpec spec = (OAEPParameterSpec) params; paramSpec = params; if (!spec.getMGFAlgorithm().equalsIgnoreCase("MGF1") && !spec.getMGFAlgorithm().equals(PKCSObjectIdentifiers.id_mgf1.getId())) { throw new InvalidAlgorithmParameterException( "unknown mask generation function specified"); } if (!(spec.getMGFParameters() instanceof MGF1ParameterSpec)) { throw new InvalidAlgorithmParameterException("unkown MGF parameters"); } Digest digest = DigestFactory.getDigest(spec.getDigestAlgorithm()); if (digest == null) { throw new InvalidAlgorithmParameterException( "no match on digest algorithm: " + spec.getDigestAlgorithm()); } MGF1ParameterSpec mgfParams = (MGF1ParameterSpec) spec.getMGFParameters(); Digest mgfDigest = DigestFactory.getDigest(mgfParams.getDigestAlgorithm()); if (mgfDigest == null) { throw new InvalidAlgorithmParameterException( "no match on MGF digest algorithm: " + mgfParams.getDigestAlgorithm()); } cipher = new OAEPEncoding( new RSABlindedEngine(), digest, mgfDigest, ((PSource.PSpecified) spec.getPSource()).getValue()); } } else { throw new InvalidAlgorithmParameterException( "unknown parameter type: " + params.getClass().getName()); } if (!(cipher instanceof RSABlindedEngine)) { if (random != null) { param = new ParametersWithRandom(param, random); } else { param = new ParametersWithRandom(param, new SecureRandom()); } } bOut.reset(); switch (opmode) { case Cipher.ENCRYPT_MODE: case Cipher.WRAP_MODE: cipher.init(true, param); break; case Cipher.DECRYPT_MODE: case Cipher.UNWRAP_MODE: cipher.init(false, param); break; default: throw new InvalidParameterException("unknown opmode " + opmode + " passed to RSA"); } }
public void initialize(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException { if (params instanceof ECParameterSpec) { ECParameterSpec p = (ECParameterSpec) params; this.ecParams = params; param = new ECKeyGenerationParameters( new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random); engine.init(param); initialised = true; } else if (params instanceof java.security.spec.ECParameterSpec) { java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec) params; this.ecParams = params; ECCurve curve = EC5Util.convertCurve(p.getCurve()); ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false); param = new ECKeyGenerationParameters( new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random); engine.init(param); initialised = true; } else if (params instanceof ECGenParameterSpec || params instanceof ECNamedCurveGenParameterSpec) { String curveName; if (params instanceof ECGenParameterSpec) { curveName = ((ECGenParameterSpec) params).getName(); } else { curveName = ((ECNamedCurveGenParameterSpec) params).getName(); } ECDomainParameters ecP = ECGOST3410NamedCurves.getByName(curveName); if (ecP == null) { throw new InvalidAlgorithmParameterException("unknown curve name: " + curveName); } this.ecParams = new ECNamedCurveSpec( curveName, ecP.getCurve(), ecP.getG(), ecP.getN(), ecP.getH(), ecP.getSeed()); java.security.spec.ECParameterSpec p = (java.security.spec.ECParameterSpec) ecParams; ECCurve curve = EC5Util.convertCurve(p.getCurve()); ECPoint g = EC5Util.convertPoint(curve, p.getGenerator(), false); param = new ECKeyGenerationParameters( new ECDomainParameters(curve, g, p.getOrder(), BigInteger.valueOf(p.getCofactor())), random); engine.init(param); initialised = true; } else if (params == null && BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa() != null) { ECParameterSpec p = BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa(); this.ecParams = params; param = new ECKeyGenerationParameters( new ECDomainParameters(p.getCurve(), p.getG(), p.getN()), random); engine.init(param); initialised = true; } else if (params == null && BouncyCastleProvider.CONFIGURATION.getEcImplicitlyCa() == null) { throw new InvalidAlgorithmParameterException("null parameter passed but no implicitCA set"); } else { throw new InvalidAlgorithmParameterException( "parameter object not a ECParameterSpec: " + params.getClass().getName()); } }