com.aspose.words

Class DigitalSignatureUtil

java.lang.Object

com.aspose.words.DigitalSignatureUtil

public class DigitalSignatureUtil
extends java.lang.Object

Provides methods for signing document.

To learn more, visit the Work with Digital Signatures documentation article.

Since digital signature works with file content rather than Document Object Model these methods are put into a separate class.

Supported formats are LoadFormat.DOC and LoadFormat.DOCX.

Method Summary

Modifier and Type	Method and Description
static DigitalSignatureCollection	loadSignatures(java.io.InputStream stream)
static DigitalSignatureCollection	loadSignatures(java.lang.String fileName) Loads digital signatures from document.
static void	removeAllSignatures(java.io.InputStream srcStream, java.io.OutputStream dstStream)
static void	removeAllSignatures(java.lang.String srcFileName, java.lang.String dstFileName) Removes all digital signatures from source file and writes unsigned file to destination file.
static void	sign(java.io.InputStream srcStream, java.io.OutputStream dstStream, CertificateHolder certHolder)
static void	sign(java.io.InputStream srcStream, java.io.OutputStream dstStream, CertificateHolder certHolder, SignOptions signOptions)
static void	sign(java.lang.String srcFileName, java.lang.String dstFileName, CertificateHolder certHolder) Signs source document using given CertificateHolder with digital signature and writes signed document to destination file.
static void	sign(java.lang.String srcFileName, java.lang.String dstFileName, CertificateHolder certHolder, SignOptions signOptions) Signs source document using given CertificateHolder and SignOptions with digital signature and writes signed document to destination file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

sign

public static void sign(java.io.InputStream srcStream,
                        java.io.OutputStream dstStream,
                        CertificateHolder certHolder,
                        SignOptions signOptions)
                 throws java.lang.Exception

Throws:

java.lang.Exception

sign

public static void sign(java.lang.String srcFileName,
                        java.lang.String dstFileName,
                        CertificateHolder certHolder,
                        SignOptions signOptions)
                 throws java.lang.Exception

Signs source document using given CertificateHolder and SignOptions with digital signature and writes signed document to destination file.

Document should be either LoadFormat.DOC or LoadFormat.DOCX.

Parameters:

srcFileName - The file name of the document to sign.

dstFileName - The file name of the signed document output.

certHolder - CertificateHolder object with certificate that used to sign file.

signOptions - SignOptions object with various signing options.

Throws:

java.lang.Exception

sign

public static void sign(java.io.InputStream srcStream,
                        java.io.OutputStream dstStream,
                        CertificateHolder certHolder)
                 throws java.lang.Exception

Throws:

java.lang.Exception

sign

public static void sign(java.lang.String srcFileName,
                        java.lang.String dstFileName,
                        CertificateHolder certHolder)
                 throws java.lang.Exception

Signs source document using given CertificateHolder with digital signature and writes signed document to destination file.

Document should be either LoadFormat.DOC or LoadFormat.DOCX.

Parameters:

srcFileName - The file name of the document to sign.

dstFileName - The file name of the signed document output.

certHolder - CertificateHolder object with certificate that used to sign file.

Throws:

java.lang.Exception

removeAllSignatures

public static void removeAllSignatures(java.lang.String srcFileName,
                                       java.lang.String dstFileName)
                                throws java.lang.Exception

Removes all digital signatures from source file and writes unsigned file to destination file.

Throws:

java.lang.Exception

removeAllSignatures

public static void removeAllSignatures(java.io.InputStream srcStream,
                                       java.io.OutputStream dstStream)
                                throws java.lang.Exception

Throws:

java.lang.Exception

loadSignatures

public static DigitalSignatureCollection loadSignatures(java.lang.String fileName)
                                                 throws java.lang.Exception

Loads digital signatures from document.

Parameters:

fileName - Path to the document.

Returns:

Collection of digital signatures. Returns empty collection if file is not signed.

Throws:

java.lang.Exception

loadSignatures

public static DigitalSignatureCollection loadSignatures(java.io.InputStream stream)
                                                 throws java.lang.Exception

Throws:

java.lang.Exception