ru.tinkoff.acquiring.sdk.CardData Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of core Show documentation
Library which allows you to use internet acquiring in your android app
There is a newer version: 4.2.1
/*
 * Copyright © 2016 Tinkoff Bank
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package ru.tinkoff.acquiring.sdk;

import java.security.PublicKey;

import ru.tinkoff.acquiring.sdk.utils.CardValidator;

/**
 * @author Mikhail Artemyev
 */
public class CardData {

    private static final String KEY_CARD_ID = "CardId";
    private static final String KEY_PAN = "PAN";
    private static final String KEY_DATE = "ExpDate";
    private static final String KEY_CVV = "CVV";

    private String pan;
    private String expiryDate;
    private String securityCode;
    private String cardId;

    public CardData(String pan, String expiryDate, String securityCode) {
        this.pan = pan;
        this.expiryDate = expiryDate;
        this.securityCode = securityCode;
    }

    public CardData(String cardId, String securityCode) {
        this.securityCode = securityCode;
        this.cardId = cardId;
    }

    public String encode(final PublicKey publicKey) {
        validate();
        String mergedData;
        if (cardId != null) {
            mergedData = String.format("%s=%s;%s=%s",
                    KEY_CARD_ID, cardId,
                    KEY_CVV, securityCode);

        } else {
            String date = expiryDate.replaceAll("\\D", "");
            mergedData = String.format("%s=%s;%s=%s;%s=%s",
                    KEY_PAN, pan,
                    KEY_DATE, date,
                    KEY_CVV, securityCode);
        }

        return CryptoUtils.encodeBase64(CryptoUtils.encryptRsa(mergedData, publicKey));
    }


    public String getPan() {
        return pan;
    }

    public void setPan(String pan) {
        this.pan = pan;
    }

    public String getExpiryDate() {
        return expiryDate;
    }

    public void setExpiryDate(String expiryDate) {
        this.expiryDate = expiryDate;
    }

    public String getSecurityCode() {
        return securityCode;
    }

    public void setSecurityCode(String securityCode) {
        this.securityCode = securityCode;
    }

    private void validate() {
        String wrongField = null;

        if (cardId == null) {
            if (!CardValidator.validateNumber(pan)) {
                wrongField = "number";
            } else if (!CardValidator.validateExpirationDate(expiryDate)) {
                wrongField = "expiration date";
            }
        }

        if (!CardValidator.validateSecurityCode(securityCode) && wrongField == null) {
            wrongField = "security code";
        }

        if (wrongField != null) {
            throw new IllegalStateException("Cannot encode card data. Wrong " + wrongField);
        }
    }
}