package com.gkhy.exam.pay.utils;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.util.Base64;
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import java.util.Date;
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public class SignCommond {
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public SignDto signSm3Detach(String plain) {
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try {
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// 使用 SM3 算法生成摘要
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MessageDigest md = MessageDigest.getInstance("SM3");
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byte[] hashBytes = md.digest(plain.getBytes());
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// 将摘要转换为 Base64 编码的字符串
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String signatureValue = Base64.getEncoder().encodeToString(hashBytes);
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SignDto signDto = new SignDto(new Date(), signatureValue, "1234567890", "issuerDn");
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return signDto;
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} catch (NoSuchAlgorithmException e) {
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e.printStackTrace();
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}
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return null;
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}
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}
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