java+加密+解密+split_Java采用RSA加密及解密技术的有关Maven项目的配置流程:

首先，在你的 Maven 项目中添加以下依赖项：

<dependencies>
  <dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.14</version>
  </dependency>
  <dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.68</version>
  </dependency>
  <dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcpkix-jdk15on</artifactId>
    <version>1.68</version>
  </dependency>
</dependencies>

其中，`commons-codec` 用于 Base64 编码，`bcprov-jdk15on` 和 `bcpkix-jdk15on` 用于 RSA 加密和解密。

接下来，生成 RSA 密钥对：

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;

public class RSAUtil {
  public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {
    KeyPairGenerator generator = KeyPairGenerator.getInstance("RSA");
    generator.initialize(2048);
    return generator.generateKeyPair();
  }
}

然后，使用公钥加密和私钥解密：

import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Security;
import javax.crypto.Cipher;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.encoders.Base64;

public class RSAUtil {
  static {
    Security.addProvider(new BouncyCastleProvider());
  }

  public static String encrypt(String data, PublicKey publicKey) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "BC");
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] encryptedBytes = cipher.doFinal(data.getBytes());
    return new String(Base64.encode(encryptedBytes), "UTF-8");
  }

  public static String decrypt(String encryptedData, PrivateKey privateKey) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "BC");
    cipher.init(Cipher.DECRYPT_MODE, privateKey);
    byte[] encryptedBytes = Base64.decode(encryptedData.getBytes("UTF-8"));
    byte[] decryptedBytes = cipher.doFinal(encryptedBytes);
    return new String(decryptedBytes);
  }
}

最后，使用 `split` 方法对加密后的字符串进行分段：

import org.apache.commons.lang3.StringUtils;

public class RSAUtil {
  public static String encrypt(String data, PublicKey publicKey) throws Exception {
    Cipher cipher = Cipher.getInstance("RSA/None/PKCS1Padding", "BC");
    cipher.init(Cipher.ENCRYPT_MODE, publicKey);
    byte[] encryptedBytes = cipher.doFinal(data.getBytes());
    String encryptedStr = new String(Base64.encode(encryptedBytes), "UTF-8");

    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < encryptedStr.length(); i += 100) {
      sb.append(StringUtils.substring(encryptedStr, i, i + 100)).append("\n");
    }
    return sb.toString();
  }
}

这样，就可以使用 RSA 加密和解密，以及对加密后的字符串进行分段了。