FIEL (e.firma), Advanced Electronic Signature
What is the FIEL (e.firma)?
The Advanced Electronic Signature (FIEL or e.firma) is a set of data attached to an electronic message, whose purpose is to identify the message sender as its legitimate author, just as if it were a handwritten signature.
Due to its characteristics, the FIEL (e.firma) provides security for taxpayers electronic transactions; its use allows for the identification of the message author and verification that it has not been modified.
Its design is based on international Public Key Infrastructure (PKI) standards.
Sign CFDI with FIEL (e.firma)
Since December 23, 2013, the FIEL or e.firma (Electronic Signature) has been used to sign electronic documents when the issuer is a natural person.
Digital seal or electronic signature
The digital seal is the result of signing the original string obtained from the electronic document. The following link shows how to generate the digital seal: Generate Digital Seal.
