Public Key Infrastructure (PKI)
Set of hardware, software, organizations, and policies to make PKE work on Internet
- Solves the problem with digital signatures
- How to verify that the person sending the message
Elements of PKI
- Certificate Authority (CA)
- A trusted organization that can vouch for the authenticity of the person of organization
- Certificate
- A digital document verifying the identity of a digital signature’s source
- Fingerprint
- A unique key issued by the CA for every message sent by the user (for higher security certification)