Web hosting plans - A.1.1 What is a Certificate? A certifcate is
A.1.1 What is a Certificate? A certifcate is issued by an issuer, usually a Certification Authority (CA), who confirms something by issuing the certificate. The subject of this confirmation depends on the CA s policy. CAs for secure web servers (used for shopping malls, etc.) usually attest only that the given public key belongs the given domain name. Company-wide CAs might attest that you are an employee of the company, that you have permissions to use a server, and so on. A.1.2 What is an X.509 certificate, technically? Technically, the certificate is a block of data signed by the certificate issuer (the CA). The relevant fields are: Unique identifier (name) of the certificate issuer Time range during which the certificate is valid Unique identifier (name) of the certified object Public key of the certified object The issuer s signature over all the above If this certificate is to be verified, the verifier must have a table of the names and public keys of trusted CAs. For simplicity, these tables should list certificates issued by the respective CAs for themselves (self-signed certificates). A.1.3 What are the implications of this certificate structure? Four implications follow: Because the certificate contains the subjects s public key, the certificate and the private key together are all that is needed to encrypt and decrypt. To verify certificates, you need the certificates of all CAs you trust. The simplest form of a dummy-certificate is one that is signed by the subject. 331
Note: In case you are looking for affordable and reliable webhost to host and run your j2ee application check Vision J2ee Web Hosting services.