Question

我使用javax.mail 1.5.5

创建一个s / mime

无符号的mime消息如下：

如您所见，部分末尾有两个连字符

我创建了s / mime，然后删除了两个连字符，因此签名值不同

public class TestKepSignStackOf {

private static final String UNSIGNED_MIME = "E:/sign/b/unsigned.eml";
private static final String SIGNED_VALUE = "E:/sign/b/smime.p7s";
private static final String SIGNED_MIME = "E:/sign/b/signed.eml";

public static void main(String[] a) {

    // create some properties and get the default Session
    Properties props = new Properties();
    // props.put("mail.smtp.host", host);

    Session session = Session.getInstance(props, null);
    // session.setDebug(debug);

    MimeMessage msg = new MimeMessage(session, null);
    try {

        // create a message
        msg.addHeader("X-TR-REM-iletiTip", "standart");
        msg.addHeader("X-TR-REM-iletiID", "");
        msg.addHeader("X-TR-REM-iletiDetay", "detay");


        msg.setFrom(new InternetAddress("mail@mail.com.tr"));
        InternetAddress[] address = {new InternetAddress(
            "mail-test@mail.com.tr")};
        msg.setRecipients(Message.RecipientType.TO, address);
        msg.setSubject("Test 4");
        msg.setSentDate(new Date());

        MultipartSigned multipartSigned = new MultipartSigned();


        MimeBodyPart bodyPart = new MimeBodyPart();

        bodyPart.setText("<b>Hello World</b>", "utf-8", "html");

        Multipart multiPart = new MimeMultipart();
        multiPart.addBodyPart(bodyPart);


        MimeBodyPart body = new MimeBodyPart();
        body.setContent(multiPart);

        multipartSigned.addBodyPart(body);
        msg.setContent(multipartSigned);
        try (OutputStream str = Files.newOutputStream(Paths
                .get(UNSIGNED_MIME))) {
            msg.writeTo(str);
        };
        signMimeMessage();

        MimeBodyPart attachPart = new MimeBodyPart();

        attachPart.attachFile(SIGNED_VALUE,
                "application/pkcs7-signature; name=smime.p7s", "base64");
        attachPart.setFileName("smime.p7s");
        attachPart.addHeader("Content-Description",
                "S/MIME Cryptographic Signature");

        multipartSigned.addBodyPart(attachPart);

        msg.saveChanges();

        try (OutputStream str = Files.newOutputStream(Paths
                .get(SIGNED_MIME))) {
            msg.writeTo(str);
            str.close();
        }
    } catch (Exception ex) {
        System.out.println("error = " + ex.getMessage());

    }

}

非常感谢任何建议或指导感谢

Answer 1

您的未签名示例有误。它已经是多部分/签名消息，但是无符号消息只包含内部多部分/混合内容。签名应该在整个multipart / mixed内容上，而不是用于在multipart / signed部分中嵌入多部分/混合内容的标题和边界。

Answer 2

问题是相关的签名过程。因此，在创建无符号文件（要签名的主体）之前，应使用message.saveChanges（）方法保存整个消息。更新的代码位于下方

        MimeBodyPart body = new MimeBodyPart();
        body.setContent(multiPart);

        multipartSigned.addBodyPart(body);
        msg.setContent(multipartSigned);
        msg.saveChanges();
        try (OutputStream str = Files.newOutputStream(Paths
                .get(UNSIGNED_MIME))) {
            body.writeTo(str);
            str.close();
        };

从MimeBodyPart中删除两个连字符javax.mail.message

2 个答案: