PKCS#7 multiple digital signatures of texts from ASP.NET web pages

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This web page shows how to use Bonnie.NET Web Edition's TextSignerButton to perform multiple digital signatures of texts from a web page.

You can insert a text in the TextBox below and sign it by using a digital certificate that resides on your client. If you have not an X.509 digital certificate, you can generated it with X.509 Builder web application.

You can perform a co-signature of the same text by co-signing it with a second certificate. Optionally, you can add a description to all the signatures that you generate.

The digital signature performed will be encoded using the PKCS#7 standard, and a signed-data message will be created. It will contains:

1. the original text.
2. the digital signature(s).
3. the X.509 digital certificate(s) used for the signature.
4. the date and time of the signature(s) in UTC format.
5. optionally, a comment for each signature.

To extract the information stored on the PKCS#7 signed-data message, SignerBrowsers objects implementend in Bonnie.NET Web Edition can be used. Note that, being the PKCS#7 a standard, SignerBrowsers can be used to parse and verify every signed-data message that uses this standard, whether it was generated by Bonnie.NET Web Edition or not.

TextSignerButtons use the Cassandra Client Framework plug-in. If Cassandra Client Framework is not installed on your computer, a built-in functionality of SignerButtons will guide you to the installation process. This relieves developers from having to manually deploy it to end users.

Try Bonnie.NET functionalities by following the next steps:

1. Create the digital signature

Insert some lines of text in the following left box and click sign. Eventually insert a comment on the right box. The comment will be stored inside the signed message.

In this demo, SignerButtons are rendered as ImageButtons and they use their built-in Ajax mode to work asyncronously.

Text to Sign

Signature's Comment

After the signature, the following boxes will contains the signed-data message generated and data inside it.

Signed-Data Message

Signed-Data Message's Content

2. Create Co-Signatures

Co-Signatures refers to digital signatures performed on an already signed message.

Eventually, insert a comment on the box below and click co-sign, The previous signed data will be co-signed with a second X.509 digital certificate. You can perform this step multiple times.

Co-Signature's Comment

After the signature, the following boxes will contains the signed-data message generated and data inside it.

Signed-Data Message

Signed-Data Message's Content

The same sign and co-sign functionalities are implemented in all the others SignerButtons controls contained on Bonnie.NET Web Edition. They permits to perform digital signatures of files and streams from ASP.NET web applications or perform digital signatures of every kind of data contained on ASP.NET web pages.

For more details, download Bonnie.NET Web Edition and try the examples contained on the setup.