Essential Communication Security Skills for Polycom Solutions
PKI Standards and Protocols
X.509 Standard The content and format of digital certificates are based on the International Telecommunications Union (ITU) X.509 standard. The standard has been through several revisions and although a version 4 has been released, it is the version 3 certificates which are in common use. The same format is also used by certificate revocation lists (CRLs) which are discussed later.
Public Key Cryptography Standards (PKCS) The PKCS specifications were produced by RSA Laboratories in co-operation with software developers around the world. They are intended to assist in the deployment of public key cryptography. Many of the concepts from these documents have been incorporated into both formal and de-facto standards including S/MIME and SSL. Some of the key PKCS documents are listed below: PKCS PKCS #1 PKCS #3 PKCS #7 PKCS #8 PKCS#10 PKCS #12
Description RSA Cryptography Standard Diffie-Hellman Key Agreement Standard Cryptographic Message Syntax Standard (used to sign and/or encrypt messages under a PKI) Private-Key Information Syntax Standard Certification Request Standard (format of messages sent to a Certification Authority to request certification of a public key) Personal Information Exchange Syntax Standard (a file format commonly used to store private keys with accompanying public key certificates, protected with a password-based symmetric key)
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