Examples with Gost2814789KeyWrapParameters com.github.zhenwei.core.asn1.cryptopro.Gost2814789KeyWrapParameters used on opensource projects

Example 1 with Gost2814789KeyWrapParameters

use of com.github.zhenwei.core.asn1.cryptopro.Gost2814789KeyWrapParameters in project LinLong-Java by zhenwei1108.

the class JceKeyAgreeRecipient method extractSecretKey.

protected Key extractSecretKey(AlgorithmIdentifier keyEncryptionAlgorithm, AlgorithmIdentifier contentEncryptionAlgorithm, SubjectPublicKeyInfo senderKey, ASN1OctetString userKeyingMaterial, byte[] encryptedContentEncryptionKey) throws CMSException {
    try {
        AlgorithmIdentifier wrapAlg = AlgorithmIdentifier.getInstance(keyEncryptionAlgorithm.getParameters());
        X509EncodedKeySpec pubSpec = new X509EncodedKeySpec(senderKey.getEncoded());
        KeyFactory fact = helper.createKeyFactory(senderKey.getAlgorithm().getAlgorithm());
        PublicKey senderPublicKey = fact.generatePublic(pubSpec);
        try {
            SecretKey agreedWrapKey = calculateAgreedWrapKey(keyEncryptionAlgorithm, wrapAlg, senderPublicKey, userKeyingMaterial, recipientKey, ecc_cms_Generator);
            if (wrapAlg.getAlgorithm().equals(CryptoProObjectIdentifiers.id_Gost28147_89_None_KeyWrap) || wrapAlg.getAlgorithm().equals(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_KeyWrap)) {
                Gost2814789EncryptedKey encKey = Gost2814789EncryptedKey.getInstance(encryptedContentEncryptionKey);
                Gost2814789KeyWrapParameters wrapParams = Gost2814789KeyWrapParameters.getInstance(wrapAlg.getParameters());
                Cipher keyCipher = helper.createCipher(wrapAlg.getAlgorithm());
                keyCipher.init(Cipher.UNWRAP_MODE, agreedWrapKey, new GOST28147WrapParameterSpec(wrapParams.getEncryptionParamSet(), userKeyingMaterial.getOctets()));
                return keyCipher.unwrap(Arrays.concatenate(encKey.getEncryptedKey(), encKey.getMacKey()), helper.getBaseCipherName(contentEncryptionAlgorithm.getAlgorithm()), Cipher.SECRET_KEY);
            }
            return unwrapSessionKey(wrapAlg.getAlgorithm(), agreedWrapKey, contentEncryptionAlgorithm.getAlgorithm(), encryptedContentEncryptionKey);
        } catch (InvalidKeyException e) {
            // might be a pre-RFC 5753 message
            if (possibleOldMessages.contains(keyEncryptionAlgorithm.getAlgorithm())) {
                SecretKey agreedWrapKey = calculateAgreedWrapKey(keyEncryptionAlgorithm, wrapAlg, senderPublicKey, userKeyingMaterial, recipientKey, old_ecc_cms_Generator);
                return unwrapSessionKey(wrapAlg.getAlgorithm(), agreedWrapKey, contentEncryptionAlgorithm.getAlgorithm(), encryptedContentEncryptionKey);
            }
            // one last try - people do actually do this it turns out
            if (userKeyingMaterial != null) {
                try {
                    SecretKey agreedWrapKey = calculateAgreedWrapKey(keyEncryptionAlgorithm, wrapAlg, senderPublicKey, userKeyingMaterial, recipientKey, simple_ecc_cmsGenerator);
                    return unwrapSessionKey(wrapAlg.getAlgorithm(), agreedWrapKey, contentEncryptionAlgorithm.getAlgorithm(), encryptedContentEncryptionKey);
                } catch (InvalidKeyException ex) {
                    // we'll throw the original exception
                    throw e;
                }
            }
            throw e;
        }
    } catch (NoSuchAlgorithmException e) {
        throw new CMSException("can't find algorithm.", e);
    } catch (InvalidKeyException e) {
        throw new CMSException("key invalid in message.", e);
    } catch (InvalidKeySpecException e) {
        throw new CMSException("originator key spec invalid.", e);
    } catch (NoSuchPaddingException e) {
        throw new CMSException("required padding not supported.", e);
    } catch (Exception e) {
        throw new CMSException("originator key invalid.", e);
    }
}

Example 2 with Gost2814789KeyWrapParameters

use of com.github.zhenwei.core.asn1.cryptopro.Gost2814789KeyWrapParameters in project LinLong-Java by zhenwei1108.

the class KeyAgreeRecipientInfoGenerator method generate.

public RecipientInfo generate(GenericKey contentEncryptionKey) throws CMSException {
    OriginatorIdentifierOrKey originator = new OriginatorIdentifierOrKey(createOriginatorPublicKey(originatorKeyInfo));
    AlgorithmIdentifier keyEncAlg;
    if (CMSUtils.isDES(keyEncryptionOID.getId()) || keyEncryptionOID.equals(PKCSObjectIdentifiers.id_alg_CMSRC2wrap)) {
        keyEncAlg = new AlgorithmIdentifier(keyEncryptionOID, DERNull.INSTANCE);
    } else if (CMSUtils.isGOST(keyAgreementOID)) {
        keyEncAlg = new AlgorithmIdentifier(keyEncryptionOID, new Gost2814789KeyWrapParameters(CryptoProObjectIdentifiers.id_Gost28147_89_CryptoPro_A_ParamSet));
    } else {
        keyEncAlg = new AlgorithmIdentifier(keyEncryptionOID);
    }
    AlgorithmIdentifier keyAgreeAlg = new AlgorithmIdentifier(keyAgreementOID, keyEncAlg);
    ASN1Sequence recipients = generateRecipientEncryptedKeys(keyAgreeAlg, keyEncAlg, contentEncryptionKey);
    byte[] userKeyingMaterial = getUserKeyingMaterial(keyAgreeAlg);
    if (userKeyingMaterial != null) {
        return new RecipientInfo(new KeyAgreeRecipientInfo(originator, new DEROctetString(userKeyingMaterial), keyAgreeAlg, recipients));
    } else {
        return new RecipientInfo(new KeyAgreeRecipientInfo(originator, null, keyAgreeAlg, recipients));
    }
}