Subject Alternative Name
lastmod 2018-08-17created 2018-08-172 edits
Subject Alternative Name (SAN) is an extension to X.509 that allows various values to be associated with a security certificate using a subjectAltName field. These values are called Subject Alternative Names (SANs).
Also called SAN, short for Subject Alternative Name. It is an extension of the RFC international standard X.509. In a web browser's certificate details, it corresponds to the [Subject Alternative Name - DNS Name] item. Depending on the certificate format, it can contain various things such as Email and IP.
Names include
- Email addresses
- IP addresses
- URIs
- DNS names (this is usually also provided as the Common Name RDN within the Subject field of the main certificate.)
- directory names (alternative Distinguished Names to that given in the Subject)
- other names, given as a General Name: a registered[3] object identifier followed by a value