This article explores how digital signatures in PDF work and how to digitally sign the PDF document when signature is created in remote app, device or service. In the end you will also find references that will help you implement external PDF digital signatures. More details from ETSI 319 142-1 Read more…
XAdES – is eIDAS compliant flexible digital signature format in XML format. It has information of what kind of files are signed by whom. It can contain timestamp and OCSP. It can contain file references or even contents in the XML. More info here https://en.wikipedia.org/wiki/XAdES ASIC-E (.asice, .scs, .bdoc, .adoc, Read more…
eIDAS standard can have multiple digital signature profiles. These mean how much proof is embedded into the signature metadata for later validation. Following table contains summary of supported eIDAS digital signature profiles XAdES CAdES PAdES STANDARD BASELINE STANDARD BASELINE STANDARD BASELINE XAdES-BES XAdES-B CAdES-BES CAdES-B PAdES-BES PAdES-B XAdES-EPES CAdES-EPES PAdES-EPES Read more…
CEF eSignature building block is very powerful tool. However it is daunting task to get started with it. Because of the complexity most of the smaller development agencies reject all project that has qualified electronic signature component. There are also big players with big budgets who can help you. For Read more…
Technology Here is listed some of the tools, frameworks and technologies we are working to achieve secure user identification and creating digital signatures. Apache2 web server which has great built in support for Client Certificate Authentication. This means that it will request end user to present certificate from his ID Read more…
ID cards are Smart cards with a chip or NFC. They can be connected to computers or or other devices using a reader with special apps and drivers. Governments are usually providing these drivers, aka “eID Middleware“, to work with national ID cards. Browsers, where the web signing happens, can Read more…
Signature itself is mark of the person that nobody can duplicate approving and confirming some action. Signature must be something that nobody can replicate. Otherwise other people can do very bad deals with you, for example buy your house for 1EUR without you knowing. Traditional ritual has been to write Read more…