SM3加密udf

SM3加密udf

maven

```xml
<dependencies>
    <!-- 配置日志 -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.5</version>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.12</version>
    </dependency>

    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <!--添加Hadoop的依赖-->
    <dependency>
        <groupId>org.apache.hadoop</groupId>
        <artifactId>hadoop-client</artifactId>
        <version>3.1.1</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.11</version>
        <scope>test</scope>
    </dependency>
    <!--添加hive依赖-->
    <dependency>
        <groupId>org.apache.hive</groupId>
        <artifactId>hive-exec</artifactId>
        <version>3.1.0</version>
    </dependency>

    <!--sm3,sm4加密算法-->
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcprov-jdk15on</artifactId>
        <version>1.66</version>
    </dependency>
</dependencies>
```

java 代码

```java
import org.apache.hadoop.hive.ql.exec.UDF;
import org.bouncycastle.crypto.digests.SM3Digest;
import org.bouncycastle.pqc.math.linearalgebra.ByteUtils;

import java.io.UnsupportedEncodingException;

public class SM3Encrypt extends UDF {
    public String evaluate(String paramStr) throws Exception {
        String resultHexString = "";
        try {
            // 将字符串转换成byte数组
            byte[] srcData = paramStr.getBytes("UTF-8");
            // 调用SM3加密
            byte[] hash = sm3Encrypt(srcData);
            // 将返回的加密字节数组转换成16进制字符串
            resultHexString = ByteUtils.toHexString(hash);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return resultHexString;
    }
    public static byte[] sm3Encrypt(byte[] srcData) {
        SM3Digest digest = new SM3Digest();
        digest.update(srcData, 0, srcData.length);
        byte[] hash = new byte[digest.getDigestSize()];
        digest.doFinal(hash, 0);
        return hash;

    }
}
```

 注册udf

```shell
#1.上传jar包hiveSM3UDF-1.0-SNAPSHOT.jar到hdfs中/{上传目录}/
#2.hive中创建函数，（多个hiveserver2都需要重启）com.xxx.udf是包名
create  function  hiveSM3Encrypt as 'com.xxx.udf.SM3Encrypt' using jar 'hdfs:/{上传目录}/hiveSM3UDF-1.0-SNAPSHOT.jar';
#3.使用
select hiveSM3Encrypt(手机号) from table_name
```