| | Certificate authority - Term Explanation on IndexSuche.Com (Site not responding. Last check: 2007-11-04) |
 | | A CA is usually a company that, for a fee, will issue a public_key_certificate which states that the CA attests that the public_key contained in the certificate belongs to the 'owner' noted in the certificate. |
 | | A CA's obligation in such schemes is to check an applicant's identity, so that users can trust certificates issued by that CA to belong to the people identified in it along with the data in it (as most usually, a public_key), and not to an imposter. |
 | | In large-scale deployments Alice may not be familiar with Bob's certificate authority (perhaps they each have a different CA computer), so Bob's certificate may also include his CA's public key signed by a "higher level" CA2, which is presumably recognizable by Alice. |
| www.indexsuche.com /Certificate_authority.html (492 words) |