国密sm2

秘钥对生成

1. Java生成秘钥对

# maven 依赖
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcpkix-jdk15on</artifactId>
    <version>1.68</version>
</dependency>
<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.15</version>
</dependency>

import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.SecureRandom;
import java.security.spec.ECGenParameterSpec;
import org.apache.commons.codec.binary.Base64;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

public class Sm2Test {

    public static void main(String[] args) throws Exception {
        KeyPair keyPair = Sm2Test.generateSm2KeyPair();
        String privateKey = Base64.encodeBase64String(keyPair.getPrivate().getEncoded());
        String publicKey = Base64.encodeBase64String(keyPair.getPublic().getEncoded());
        System.out.println(privateKey);
        System.out.println(publicKey);
    }

    public static KeyPair generateSm2KeyPair() throws Exception {
        try {
            final ECGenParameterSpec sm2Spec = new ECGenParameterSpec("sm2p256v1");
            // 获取一个椭圆曲线类型的密钥对生成器
            final KeyPairGenerator kpg = KeyPairGenerator.getInstance("EC", new BouncyCastleProvider());
            SecureRandom random = new SecureRandom();
            // 使用SM2的算法区域初始化密钥生成器
            kpg.initialize(sm2Spec, random);
            // 获取密钥对
            KeyPair keyPair = kpg.generateKeyPair();
            return keyPair;
        } catch (Exception e) {
            System.err.println(e);
            throw new Exception(e);
        }
    }
}

2. OpenSSL生成秘钥对