public static final AlgorithmIdentifier getInstance(Object obj) { if (obj instanceof EncryptionScheme) { return (EncryptionScheme)obj; } else if (obj instanceof ASN1Sequence) { return new EncryptionScheme((ASN1Sequence)obj); } throw new IllegalArgumentException("unknown object in factory: " + obj.getClass().getName()); }
public ASN1Primitive getASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(getObjectId()); v.add(getParameters()); return new DERSequence(v); } }
EncryptionScheme algId = pbes2Parameters.getEncryptionScheme(); if (!algId.getAlgorithm().equals(NISTObjectIdentifiers.id_aes256_CCM)) CCMParameters ccmParameters = CCMParameters.getInstance(algId.getParameters()); Cipher c; AlgorithmParameters algParams;
public ASN1Primitive getObject() { return (ASN1Primitive)getParameters(); }
private PBES2Parameters( ASN1Sequence obj) { Enumeration e = obj.getObjects(); ASN1Sequence funcSeq = ASN1Sequence.getInstance(((ASN1Encodable)e.nextElement()).toASN1Primitive()); if (funcSeq.getObjectAt(0).equals(id_PBKDF2)) { func = new KeyDerivationFunc(id_PBKDF2, PBKDF2Params.getInstance(funcSeq.getObjectAt(1))); } else { func = KeyDerivationFunc.getInstance(funcSeq); } scheme = EncryptionScheme.getInstance(e.nextElement()); }
private Cipher createCipher(int mode, char[] password, AlgorithmIdentifier algId) throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchPaddingException, InvalidKeyException, InvalidAlgorithmParameterException, NoSuchProviderException { PBES2Parameters alg = PBES2Parameters.getInstance(algId.getParameters()); PBKDF2Params func = PBKDF2Params.getInstance(alg.getKeyDerivationFunc().getParameters()); AlgorithmIdentifier encScheme = AlgorithmIdentifier.getInstance(alg.getEncryptionScheme()); SecretKeyFactory keyFact = helper.createSecretKeyFactory(alg.getKeyDerivationFunc().getAlgorithm().getId()); SecretKey key; if (func.isDefaultPrf()) { key = keyFact.generateSecret(new PBEKeySpec(password, func.getSalt(), validateIterationCount(func.getIterationCount()), keySizeProvider.getKeySize(encScheme))); } else { key = keyFact.generateSecret(new PBKDF2KeySpec(password, func.getSalt(), validateIterationCount(func.getIterationCount()), keySizeProvider.getKeySize(encScheme), func.getPrf())); } Cipher cipher = Cipher.getInstance(alg.getEncryptionScheme().getAlgorithm().getId()); ASN1Encodable encParams = alg.getEncryptionScheme().getParameters(); if (encParams instanceof ASN1OctetString) { cipher.init(mode, key, new IvParameterSpec(ASN1OctetString.getInstance(encParams).getOctets())); } else { // TODO: at the moment it's just GOST, but... GOST28147Parameters gParams = GOST28147Parameters.getInstance(encParams); cipher.init(mode, key, new GOST28147ParameterSpec(gParams.getEncryptionParamSet(), gParams.getIV())); } return cipher; }
public PBES2Parameters( ASN1Sequence obj) { Enumeration e = obj.getObjects(); ASN1Sequence funcSeq = ASN1Sequence.getInstance(((ASN1Encodable)e.nextElement()).toASN1Primitive()); if (funcSeq.getObjectAt(0).equals(id_PBKDF2)) { func = new KeyDerivationFunc(id_PBKDF2, PBKDF2Params.getInstance(funcSeq.getObjectAt(1))); } else { func = new KeyDerivationFunc(funcSeq); } scheme = (EncryptionScheme)EncryptionScheme.getInstance(e.nextElement()); }
cipher = helper.createCipher(alg.getEncryptionScheme().getAlgorithm().getId()); ASN1Encodable encParams = alg.getEncryptionScheme().getParameters(); if (encParams instanceof ASN1OctetString)
public static EncryptionScheme getInstance(Object obj) { if (obj instanceof EncryptionScheme) { return (EncryptionScheme)obj; } else if (obj != null) { return new EncryptionScheme(ASN1Sequence.getInstance(obj)); } return null; }
cipher = helper.createCipher(alg.getEncryptionScheme().getAlgorithm().getId()); ASN1Encodable encParams = alg.getEncryptionScheme().getParameters(); if (encParams instanceof ASN1OctetString)
public PBES2Algorithms( ASN1Sequence obj) { super(obj); Enumeration e = obj.getObjects(); objectId = (ASN1ObjectIdentifier)e.nextElement(); ASN1Sequence seq = (ASN1Sequence)e.nextElement(); e = seq.getObjects(); ASN1Sequence funcSeq = (ASN1Sequence)e.nextElement(); if (funcSeq.getObjectAt(0).equals(id_PBKDF2)) { func = new KeyDerivationFunc(id_PBKDF2, PBKDF2Params.getInstance(funcSeq.getObjectAt(1))); } else { func = new KeyDerivationFunc(funcSeq); } scheme = new EncryptionScheme((ASN1Sequence)e.nextElement()); }
byte[] salt = defParams.getSalt(); String oid = scheme.getAlgorithm().getId(); AlgorithmParameters algParams = helper.createAlgorithmParameters(oid); algParams.init(scheme.getParameters().toASN1Primitive().getEncoded());
PBES2Parameters pbeParams = new PBES2Parameters(pbkdAlgId, new EncryptionScheme(NISTObjectIdentifiers.id_aes256_CCM, CCMParameters.getInstance(algParams.getEncoded()))); PBES2Parameters pbeParams = new PBES2Parameters(pbkdAlgId, new EncryptionScheme(NISTObjectIdentifiers.id_aes256_CCM, CCMParameters.getInstance(algParams.getEncoded())));
byte[] salt = defParams.getSalt(); String oid = scheme.getAlgorithm().getId(); AlgorithmParameters algParams = helper.createAlgorithmParameters(oid); algParams.init(scheme.getParameters().toASN1Primitive().getEncoded());
PBES2Parameters pbeParams = new PBES2Parameters(pbkdAlgId, new EncryptionScheme(NISTObjectIdentifiers.id_aes256_CCM, CCMParameters.getInstance(algorithmParameters.getEncoded())));
new EncryptionScheme(keyEncAlgorithm, ASN1Primitive.fromByteArray(cipher.getParameters().getEncoded())));
new EncryptionScheme(keyEncAlgorithm, ASN1Primitive.fromByteArray(cipher.getParameters().getEncoded())));
EncryptionScheme scheme = new EncryptionScheme(algOID, ASN1Primitive.fromByteArray(params.getEncoded())); KeyDerivationFunc func = new KeyDerivationFunc(PKCSObjectIdentifiers.id_PBKDF2, new PBKDF2Params(salt, iterationCount, prf));