1 import com.spire.pdf.PdfDocument;import com.spire.pdf.security.*;import com.spire.pdf.graphics.*;import java.awt.*;import java.awt.geom.*;public class digitalSignature { public static void main(String[] args) { //定义输入、输出文件和数字签名文件 String inputFile = "data/Doc2.pdf"; S...
利用密钥的指定算法生成Signature实例,然后利用PrivateKey和文件内容,分别调用其initSign()和update()方法,最后调用sign()方法生成数字签名。 第三部分:进行签名验证 从密钥文件中读取KeyPair对象。 调用KeyPair对象的getPrivate()和getPublic()方法,分别获取PrivateKey和PublicKey。 利用密钥的指定算法生成Signature实例,然...
最后,我们可以使用证书链验证数字签名的有效性: importorg.apache.pdfbox.pdmodel.interactive.digitalsignature.SignatureOptions;try{booleanisValid=signature.verifySignature(certificateChain,null,null);if(isValid){System.out.println("数字签名有效");}else{System.out.println("数字签名无效");}}catch(Exceptione...
1. 4. 验证签名 一旦我们获取了签名字段,我们可以使用SignatureValidator类来验证签名的有效性。以下是验证签名的示例代码: SignatureValidatorvalidator=newSignatureValidator(document,signatureField);List<VerificationResult>results=validator.verify();for(VerificationResultresult:results){if(result.isValid()){System.o...
Digital Signature SDK HTTP message signatures provide a mechanism for end-to-end authenticity and integrity for components of an HTTP message. This Java SDK is designed to simplify the process of generating digital signature headers and also provides a method to validate the digital signature headers...
DSS(Digital Signature Standard),数字签名标准,通过这个标准逐步形成了DSA(Digital Signature Algorithm),数字签名算算法。DSA仅仅包括数字签名,不能进行加解密。实现方式如下: 该算法到的实现和RSA数字签名的实现大同小异(只是在细节参数方面存在很少的差别)。见如下: ...
Digital signatures use PKC, which employs an algorithm using two different but mathematically related keys: one to create a digital signature and another to verify a digital signature. Unlike conventional symmetric-key cryptography, which uses the same secret key for encryption and decryption, PKC ...
An XML signature is a digital signature with several key properties. It defines a process and a format for generating digital signatures in the XML format, and it has many additional features. For instance, it allows you to sign more than one piece of data -- in binary or XML -- and ...
import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage; import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature; import org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDVisibleSignDesigner; import java.io.File; import java.io.IOExceptio...
public class digitalSig { public static void main(String[] args) throws java.lang.Exception { String inputFile = "beil.pdf"; String outputFile = "resultoutput.pdf"; //String inputFile_Pfx = "Class II Organization 2 Year Document Signer Signature-2022.pfx"; ...