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SSL Glossary
List of common SSL terms and their definitions
14
Computer Networking
Professional
05/19/2010

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Cards

Term
C
Definition

Country


Country of origin

Term
CA
Definition

Certificate Authority

 

The authority that is vouching for this certificate.  Many CAs are not trusted root authorities, but are connected to them by chain.

Term
CN
Definition

Common Name

 

The name as it appears in the subject of the certificate. Per SSL specification, the CN should match the requested host name. If a certificate does not match what you are connecting to (CN=www.abc.com, but request is was for abc.com), the client has the option of aborting the connection.  Most modern-day browsers will prompt the user.

Term
CRL
Definition

Certificate Revocation List

 

List of certificates that have been issued and signed by a CA, but have been revoked for one reason or another. It is entirely the responsibility of the client to verify that the certificate is not in the CRL.

Term
Chain
Definition
The path a certificate takes to be verified by a client to a root authority.
Term
DN
Definition

Distinguished Name

 

Consists of the following values together: C, S, L, O, OU, CN, email

Term
Keystore
Definition
A file used by java to store the private key of a certificate, the certificate, and the CA certificates for the cert/key.
Term
L
Definition

Locality

 

The city of origin.

Term
O
Definition

Organization

 

Usually the company name who owns the certificate

Term
OU
Definition

Organizational Unit

 

Usually the division of a company which is responsible for the certificate.

Term
RA
Definition

Root Authority

 

One of a list of CA defined to be an unconditionally trusted CA. These CA certificates are usually pre-installed into modern day web browsers, SSL client distributions, etc

Term
Trust Store
Definition
A file used by java to store the certificates of anything that can be treated as a root authority. Note that not only root authorites are in these files - Adding a self signed CA certificate to the trust store will allow authentication of any certs that CA has signed.
Term
emailAddress
Definition
Used to identify the point of contact for this certificate
Term
S
Definition

State

 

State of origin

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