Firmas

It can be done in Acrobat Reader on Windows or Mac.

Hi there

Hope you are doing well and thanks for reaching out.

When you receive a signed document, you may want to validate its signature(s) to verify the signer and the signed content. Depending on how you have configured your application, validation may occur automatically. Signature validity is determined by checking the authenticity of the signature’s digital ID certificate status and document integrity.

For more information please check the help page https://helpx.adobe.com/acrobat/using/validating-digital-signatures.html

Hope this information will help

Regards

Amal