I’m struggling in adding digital signature to a PDF Document.
The signature we get from our provider is of the following format (stated from the reference guide):
The Cryptographic Message Syntax (CMS) is a standard for cryptographically protected messages. It can be used to digitally sign, digest, authenticate or encrypt any form of digital data. CMS is based on the syntax of PKCS#7.
[…] the signature part in the response is Base64 encoded and represents either a [RFC3161] compliant Trusted Timestamp or a [RFC3369] / [RFC5652] compliant CMS Signature
Can anyone please give me some advice on how to implement a signature of such type? All information I found so far is on adding a certificate but in our case we need to add a complete signature…
Thanks in advance for your help!