The AdES Family of Standards - CAdES XAdES PAdES | PDF | Portable Document Format | Public Key Certificate
![e-ID Archives - Page 3 of 4 - Identity based Advanced and Qualified electronic signature marketplace e-ID Archives - Page 3 of 4 - Identity based Advanced and Qualified electronic signature marketplace](https://eideasy.com/wp-content/uploads/2021/01/image-360x240.png)
e-ID Archives - Page 3 of 4 - Identity based Advanced and Qualified electronic signature marketplace
![public key infrastructure - Why AdES -A signatures require TWO timestamps? - Information Security Stack Exchange public key infrastructure - Why AdES -A signatures require TWO timestamps? - Information Security Stack Exchange](https://i.stack.imgur.com/Kr6co.png)
public key infrastructure - Why AdES -A signatures require TWO timestamps? - Information Security Stack Exchange
![How hash/digest signing works for PDF (PAdES) - Identity based Advanced and Qualified electronic signature marketplace How hash/digest signing works for PDF (PAdES) - Identity based Advanced and Qualified electronic signature marketplace](https://eideasy.com/wp-content/uploads/2023/03/clientCreation-serverKeyActivation.jpg)