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WEEK8 WEEK9 CONCLUSION1 CONCLUSION2 阅读全文
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##Hiding Date from Ohters 信息安全的CIA三要素: Confidentiality（保密性） Integrity（完整性） Availability（可用性） Plaintext（明文）是指待加密的信息 Ciphertext（密文）是明文加密后的版本 明文转换为密文称作En 阅读全文
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#Internet History, Technology, and Security From the birth of computer, to the development of network, to the introduction of network security ##Histo 阅读全文
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##Week9——Security: Web Security 1. Which of the following is false about the two keys used in public key encryption? If you have the public key it is 阅读全文
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##Week8：Security : Encrypting and Signing 1. Which of the following is true of security? Perfect security is achievable and requires a trade-off with 阅读全文