China automation automation network brings together manufacturers, industrial users, universities and research / design institutes, dedicated to building automation and building automation industry portal areas of authority of the brand, for the majority of staff and provide automated real-time industry professional authority of the technical exchange mass and business services platform. Fifth Conference of SME e-commerce application development industry, site selection, and service providers selected voting about to start, network operators welcomed the attention and vote. Speaking of a public good, it was generally thought that the enterprise Celebrities contributions, but the earthquake, the public is quietly changing.
Using public key algorithm to solve the session key distribution. Characteristics of the store and forward e-mail, use the handshake protocol to ensure that both sides have the same session key approach is unrealistic, and the use of conventional one-time key is to strengthen the already strong conventional encryption method. Shown in Figure 3, the message can use both services. First, the signature generated for the plaintext message and attach it to first; then use the CAST-128 and signed plaintext message is encrypted, then the session key using the RSA encryption. Note the order here, if the first encrypted and then signed it, others can be signed after the removed sign their signature, so tampering with the signature. The Black Gold Edition XFX XFX GeForce8600GT in the work can be said is absolutely classic, this card does not use black models of the public version of PCB production, it uses self-developed by the XFX XFX the PCB board, the use of their own circuit design, Therefore, the layout of this card is more reasonable, more luxurious elements, both play for the graphics card overclocking stability and performance guarantees, but also makes this card nice shape.