System Details

About the Applet

[1] The Web Forms Signer Applet is a Java based client side component running inside a Web browser which digitally signs Web forms and Electronic Files with a private key and public key certificate stored in a PKCS#12 compliant keystore file.

• The applet digitally signs (at the client side in a Web browser) the fields of given Web form (including any files for uploading as part of the form) and produce a single digital signature as a result
• The computed form digital signature is a PKCS#7 SignedData object encoded as Base64 string that is inserted into one of the Web form custom fields and posted to the Web server along with the entire form. The name of the custom field storing the computed PKCS#7 SignedData object should be configurable as an applet external parameter
• For the purpose of digital signing the Web form, the applet uses the private keys and public key certificates from a PKCS#12 compliant file
• The applet supports signing of 3 types of Web forms:
• Web forms with one or more data fields: text fields, drop downs, radio buttons, check boxes, text areas, etc.
• Web forms with one or more electronic files for uploading
• Web forms with mixed content (data fields and electronic files)
• During the signing process the file(s) contents should be signed (not their file path and file name). The file format is ignored and all files are considered as binary data
• The only supported form character encoding is UTF-8