com.alipay.api.internal.util.asymmetric.RSA2Encryptor Maven / Gradle / Ivy

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/**
 * Alipay.com Inc. Copyright (c) 2004-2019 All Rights Reserved.
 */
package com.alipay.api.internal.util.asymmetric;

import com.alipay.api.AlipayConstants;

/**
 * RSA2算法加密器 签名部分采用SHA256算法进行摘要计算，其余部分与RSA算法相同
 */
public class RSA2Encryptor extends RSAEncryptor {
    /**
     * RSA2最大加密明文大小(2048/8-11=244)
     */
    private static final int MAX_ENCRYPT_BLOCK_SIZE = 244;
    /**
     * RSA2最大解密密文大小(2048/8=256)
     */
    private static final int MAX_DECRYPT_BLOCK_SIZE = 256;

    @Override
    protected String getAsymmetricType() {
        return AlipayConstants.SIGN_TYPE_RSA2;
    }

    @Override
    protected String getSignAlgorithm() {
        return AlipayConstants.SIGN_SHA256RSA_ALGORITHMS;
    }

    @Override
    protected int getMaxDecryptBlockSize() {
        return MAX_DECRYPT_BLOCK_SIZE;
    }

    @Override
    protected int getMaxEncryptBlockSize() {
        return MAX_ENCRYPT_BLOCK_SIZE;
    }
}