cn.net.wanmo.ocr.util.Signature Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of ocr-springboot2 Show documentation

文字识别（Optical Character Recognition，OCR ）基于行业前沿的深度学习技术，将图片上的文字内容智能识别成为可编辑的文本，可以有效地代替人工录入信息。

The newest version!

package cn.net.wanmo.ocr.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import java.io.UnsupportedEncodingException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;

public class Signature {
    private static Logger logger = LoggerFactory.getLogger(Signature.class);

    /**
     * 获取签名
     *
     * @param secretKey 密钥
     * @param data      需要签名的数据
     * @return 签名
     */
    public static String signWithHmacSha256(String secretKey, String data) {

        try {
            SecretKeySpec signingKey = new SecretKeySpec(secretKey.getBytes("UTF-8"), "HmacSHA256");
            Mac mac = Mac.getInstance("HmacSHA256");
            mac.init(signingKey);
            return Base64.getEncoder().encodeToString(mac.doFinal(data.getBytes("UTF-8")));
        } catch (NoSuchAlgorithmException | InvalidKeyException | UnsupportedEncodingException e) {
            logger.error("生成接口签名值", e);
        }
        return null;
    }

    /**
     * 验证签名
     *
     * @param secretKey 密钥
     * @param data      需要签名的数据
     * @param hmac      已经签名的数据
     * @return true:签名一致
     */
    public static boolean verify(String secretKey, String data, String hmac) {
        String calculatedHmac = signWithHmacSha256(secretKey, data);
        return calculatedHmac.equals(hmac);
    }
}