Examples with ArbitraryDataProvider com.owncloud.android.datamodel.ArbitraryDataProvider used on opensource projects

Example 26 with ArbitraryDataProvider

use of com.owncloud.android.datamodel.ArbitraryDataProvider in project android by nextcloud.

the class PushUtils method verifySignature.

public SignatureVerification verifySignature(Context context, byte[] signatureBytes, byte[] subjectBytes) {
    Signature signature = null;
    PublicKey publicKey;
    SignatureVerification signatureVerification = new SignatureVerification();
    signatureVerification.setSignatureValid(false);
    Account[] accounts = AccountUtils.getAccounts(context);
    ArbitraryDataProvider arbitraryDataProvider = new ArbitraryDataProvider(context.getContentResolver());
    String arbitraryValue;
    Gson gson = new Gson();
    PushConfigurationState pushArbitraryData;
    try {
        signature = Signature.getInstance("SHA512withRSA");
        if (accounts.length > 0) {
            for (Account account : accounts) {
                if (!TextUtils.isEmpty(arbitraryValue = arbitraryDataProvider.getValue(account, KEY_PUSH))) {
                    pushArbitraryData = gson.fromJson(arbitraryValue, PushConfigurationState.class);
                    if (!pushArbitraryData.isShouldBeDeleted()) {
                        publicKey = (PublicKey) readKeyFromString(true, pushArbitraryData.getUserPublicKey());
                        signature.initVerify(publicKey);
                        signature.update(subjectBytes);
                        if (signature.verify(signatureBytes)) {
                            signatureVerification.setSignatureValid(true);
                            signatureVerification.setAccount(account);
                            return signatureVerification;
                        }
                    }
                }
            }
        }
    } catch (NoSuchAlgorithmException e) {
        Log.d(TAG, "No such algorithm");
    } catch (InvalidKeyException e) {
        Log.d(TAG, "Invalid key while trying to verify");
    } catch (SignatureException e) {
        Log.d(TAG, "Signature exception while trying to verify");
    }
    return signatureVerification;
}