Descriptions: The only authorized lab manual for the cisco networking academy ccna security version 2 course the cisco 1 2 networking academy 1 2 course on ccna 1 2 security . Cryptography and network security seminar topic explains about importance of security in network while transmitting packets causes of packet hacking on network. Glossary payment card industry pci data security standard glossary abbreviations and acronyms please click here for the downloadable version of the pci dss glossary. 31 secret key cryptography secret key cryptography methods employ a single key for both encryption and decryption as shown in figure 1a the sender uses the key . How electronic encryption works a survey on secure email and private electronic data
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