Transmission.Level.Security
Transmission level security is usually concerned with message level security in distributed
computing. WSGrid provides elemental transmission security by means of Secure Socket Layer
(SSL). It provides an encrypted transmission in communication. In order to find a proper key
to encode the messages, every node is expected to recognize others by exchanging machine
certificates. Because the authentication has to be mutual, the machine certificates have to be
installed before the host (node) joins the virtual organization(s). During transmission, every
message has to be encoded by the public key, which can be found on the certificate of the
recipient. Thus, the receiver can decode the cipher using a private key.
Because the message is encoded and decoded using the key pair of the recipient, the technology
is designed for communication between two participants. However, in WSGrid,
every communication and cooperation occurs between two nodes. Hence, SSL can meet the
requirement. Unfortunately, the cipher is encoded using the key of the host, so it is open to
all the users on the node. To improve security, the user can encrypt the messages personally
before sending the messages to the SSL channel.
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