java生成sm2/hutool生成公钥私钥代码示例

<dependency>
  <groupId>org.bouncycastle</groupId>
  <artifactId>bcprov-jdk15to18</artifactId>
  <version>1.69</version>
</dependency>
<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-all</artifactId>
    <version>5.8.16</version>
</dependency>

KeyPair pair = SecureUtil.generateKeyPair("SM2");
byte[] privateKey = pair.getPrivate().getEncoded();
byte[] publicKey = pair.getPublic().getEncoded();
//私钥
String privateKeyStr=Base64.getEncoder().encodeToString(privateKey);
//公钥
String publicKeyStr=Base64.getEncoder().encodeToString(publicKey);

String content = "我是Hanley.";
final SM2 sm2 = SmUtil.sm2(privateKeyStr,null);
String sign = sm2.signHex(HexUtil.encodeHexStr(content));

final SM2 sm2 = SmUtil.sm2(null,publicKeyStr);
// true
boolean verify = sm2.verifyHex(HexUtil.encodeHexStr(content), sign);

// 公钥加密，私钥解密
SM2 sm2 = SmUtil.sm2(null, publicKey);
String encryptStr = sm2.encryptBcd(text, KeyType.PublicKey);

// 公钥加密，私钥解密
SM2 sm2 = SmUtil.sm2(privateKeyStr, null);
String decryptStr = StrUtil.utf8Str(sm2.decryptFromBcd(encryptStr, KeyType.PrivateKey));