Health Informatics Glossary
X.500 - A series of
computer networking standards covering electronic directory services.
X.509 - In cryptography,
X.509 is a certificate management protocol for a public key
infrastructure (PKI). Defined in RFC 4210,
X.509 specifies standard formats for public key certificates,
certificate revocation lists and a certification path validation
X12 is a Standards Development
Organization (SDO) for Electronic Data Interchange (EDI). Founded in
1979, and ANSI accredited, X12 has sponsored more than 315 EDI
standards and a growing collection of XML schemas for health care,
insurance, government, transportation, finance, and other industries.
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Last Update: 30 December 2011