tailieunhanh - Lecture Data security and encryption - Lecture 21: Key Management and Distribution

The contents of this chapter include all of the following: symmetric key distribution using symmetric encryption, symmetric key distribution using public-key encryption, distribution of public keys, digital signatures, ElGamal & Schnorr signature schemes, digital signature algorithm and standard, authentication and certificates. | Data Security and Encryption (CSE348) Lecture slides by Lawrie Brown for “Cryptography and Network Security”, 5/e, by William Stallings, briefly reviewing the text outline from Ch 0, and then presenting the content from Chapter 1 – “Introduction”. Lecture # 21 Review have discussed: digital signatures ElGamal & Schnorr signature schemes digital signature algorithm and standard Chapter 13 summary Chapter 14 – Key Management and Distribution Opening quote. No Singhalese, whether man or woman, would venture out of the house without a bunch of keys in his hand, for without such a talisman he would fear that some devil might take advantage of his weak state to slip into his body. —The Golden Bough, Sir James George Frazer Opening quote. Key Management and Distribution Topics of cryptographic key management / key distribution are complex cryptographic, protocol, & management issues Symmetric schemes require both parties to share a common secret key Public key schemes require parties to acquire valid public keys Have concerns with doing both The topics of cryptographic key management and cryptographic key distribution are complex, involving cryptographic, protocol, and management considerations. The purpose of this chapter is to give the reader a feel for the issues involved and a broad survey of the various aspects of key management and distribution. Key Distribution For symmetric encryption to work Two parties to an exchange must share the same key That key must be protected from access by others Furthermore, frequent key changes are usually desirable to limit the amount of data compromised if an attacker learns the key For symmetric encryption to work, the two parties to an exchange must share the same key, and that key must be protected from access by others. Furthermore, frequent key changes are usually desirable to limit the amount of data compromised if an attacker learns the key. This is one of the most . | Data Security and Encryption (CSE348) Lecture slides by Lawrie Brown for “Cryptography and Network Security”, 5/e, by William Stallings, briefly reviewing the text outline from Ch 0, and then presenting the content from Chapter 1 – “Introduction”. Lecture # 21 Review have discussed: digital signatures ElGamal & Schnorr signature schemes digital signature algorithm and standard Chapter 13 summary Chapter 14 – Key Management and Distribution Opening quote. No Singhalese, whether man or woman, would venture out of the house without a bunch of keys in his hand, for without such a talisman he would fear that some devil might take advantage of his weak state to slip into his body. —The Golden Bough, Sir James George Frazer Opening quote. Key Management and Distribution Topics of cryptographic key management / key distribution are complex cryptographic, protocol, & management issues Symmetric schemes require both parties to share a common secret key .

• An ninh - Bảo mật
• Data security
• Data security and encryption
• Network security
• Symmetric ciphers
• Asymmetric ciphers
• Cryptographic data integrity algorithms
• Mutual trust
• Lecture Data security and encryption
• Mã hóa dữ liệu
• Bảo mật dữ liệu
• IPSec security framework
• IPSec security policy
• Wireless Network Security
• Wireless Application Protocol