# Digital signature

> Cryptographic mechanism authenticating the issuer and integrity of an electronic document.

**URL:** https://quilometragem.com/glossary/digital-signature

**Summary:** Cryptographic mechanism authenticating the issuer and integrity of an electronic document.

- A digital signature is the cryptographic mechanism (public/private key pair) that authenticates the issuer and proves document integrity.
- Mileage receipts digitally signed by the employer's system enjoy a presumption of authenticity in court.
- Regulated in Brazil by ICP-Brasil, in Mexico by SAT's FIEL/e.firma, in the US by the 2000 ESIGN Act.

A digital signature is the cryptographic mechanism (public/private key pair) that authenticates the issuer and proves document integrity. Mileage receipts digitally signed by the employer's system enjoy a presumption of authenticity in court. Regulated in Brazil by ICP-Brasil, in Mexico by SAT's FIEL/e.firma, in the US by the 2000 ESIGN Act.