Key Management and Distribution

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Syed Bahadur Shah

Key Management and Distribution by Syed Bahadur Shah

Technology

Key Management and Distribution
Presented by
Syed Bahadur Shah
1

PRESENTATION CONTENTS
1. Key Management
2. Key Generation
3. Type of Keys
4. Key Distribution
5. Types of Key Distribution
6. Public Key Infrastructure
7. Question & Answer Section
2

What is Key Management?
Key management is the set of techniques and procedures
supporting the establishment and maintenance of keying
relationships between authorized parties.
4

What is Key Generation/Establishment?
Key generation is the process of generating keys for
cryptography. The key is used to encrypt and decrypt
data whatever the data is being encrypted or
decrypted.
6

Types of Keys in Cryptography
1. Symmetric Key
2. Asymmetric Key
8

Symmetric Key
Symmetric key is (also called “secret key / private key /
conventional key / single key”) use the same key for
both encryption and decryption.
9

Asymmetric Key
Asymmetric key is (also called “public key / two key”)
use different keys for encryption and decryption.
10

Symmetric Key Encryption & Decryption
11

Symmetric Key Encryption & Decryption
An algorithm in which the sender and receiver of a
message share a single, common key that is used
to encrypt and decrypt the message.
12

Asymmetric Key Encryption & Decryption
13

Asymmetric Key Encryption & Decryption
An algorithm in which the sender and receiver of a
message share different keys (public key & private
key) that is used to encrypt and decrypt the
message.
14

What is Key Distribution?
Key distribution in cryptography is a system that is responsible
for providing keys to the users in a network that shares sensitive
or private data.
16

Types of Key Distribution
 Public Key Distribution
1. Public Announcement
2. Publically Available Directory
3. Public Key Authority
4. Public Key Certificate
 Private Key Distribution
1. Simple Secret Key
2. Secret Key with Confidentiality & Authentication
18

2# - Publically Available Directory
21
Alice Bob

4# - Public Key Certificate
23
Alice Bob
Alice Bob

2# - Secret Key with Confidentiality & Authentication
26

What is Public Key Infrastructure?
28
Public Key Infrastructure (PKI) is a framework that helps identify and solve these
problems for you, by establishing safe and reliable environment for electronic
transactions in the internet.
It uses public key encryption techniques to protect the confidentiality, integrity,
authenticity and non-repudiation of data.

How Public Key Infrastructure Works?
30
AliceBob

How Public Key Infrastructure Works? (Cont:)
31

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The public key is used to encrypt the data. As it can be openly distributed, it’s called a public key. Once a public key encrypts the data, no one can use the public key to decrypt the data. On the other hand, the private key is used to decrypt the data. As it can’t be openly distributed but needs to be kept a secret, that’s why it’s called a private key. In symmetric cryptography, the private key can encrypt and decrypt data. Public and private keys both have their special objectives and uses in cryptography. As for public vs. private keys, we will discuss some key factors to better understand the situation. These are - working mechanism, performance, visibility, type, sharing, and storing. To help you better understand the differences between a public key and a private key, 101 Blockchain offers exclusive courses. These courses will help you understand the principle behind both encryption types and make it easier for you to incorporate these in your blockchain project. The following course will help you stay on top of the game -> Blockchain Like a Boss masterclass https://academy.101blockchains.com/courses/blockchain-masterclass Learn more about the certification courses from here -> Certified Enterprise Blockchain Professional (CEBP) course https://academy.101blockchains.com/courses/blockchain-expert-certification Certified Enterprise Blockchain Architect (CEBA) course https://academy.101blockchains.com/courses/certified-enterprise-blockchain-architect Certified Blockchain Security Expert (CBSE) course https://academy.101blockchains.com/courses/certified-blockchain-security-expert Learn more from our guides -> https://101blockchains.com/private-key-vs-public-key/ https://101blockchains.com/public-key-cryptography-in-blockchain/ https://101blockchains.com/public-key-cryptography/

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Key Management and Distribution

1. Key Management and Distribution Presented by Syed Bahadur Shah 1

2. PRESENTATION CONTENTS 1. Key Management 2. Key Generation 3. Type of Keys 4. Key Distribution 5. Types of Key Distribution 6. Public Key Infrastructure 7. Question & Answer Section 2

3. What is Key Management? 3

4. What is Key Management? Key management is the set of techniques and procedures supporting the establishment and maintenance of keying relationships between authorized parties. 4

5. What is Key Generation/Establishment? 5

6. What is Key Generation/Establishment? Key generation is the process of generating keys for cryptography. The key is used to encrypt and decrypt data whatever the data is being encrypted or decrypted. 6

7. Types of Keys in Cryptography 7

8. Types of Keys in Cryptography 1. Symmetric Key 2. Asymmetric Key 8

9. Symmetric Key Symmetric key is (also called “secret key / private key / conventional key / single key”) use the same key for both encryption and decryption. 9

10. Asymmetric Key Asymmetric key is (also called “public key / two key”) use different keys for encryption and decryption. 10

11. Symmetric Key Encryption & Decryption 11

12. Symmetric Key Encryption & Decryption An algorithm in which the sender and receiver of a message share a single, common key that is used to encrypt and decrypt the message. 12

13. Asymmetric Key Encryption & Decryption 13

14. Asymmetric Key Encryption & Decryption An algorithm in which the sender and receiver of a message share different keys (public key & private key) that is used to encrypt and decrypt the message. 14

15. What is Key Distribution? 15

16. What is Key Distribution? Key distribution in cryptography is a system that is responsible for providing keys to the users in a network that shares sensitive or private data. 16

17. Types of Key Distribution 17

18. Types of Key Distribution  Public Key Distribution 1. Public Announcement 2. Publically Available Directory 3. Public Key Authority 4. Public Key Certificate  Private Key Distribution 1. Simple Secret Key 2. Secret Key with Confidentiality & Authentication 18

19. Public Key Distribution 19

20. 1# - Public Announcement 20 Alice Bob

21. 2# - Publically Available Directory 21 Alice Bob

22. 3# - Public Key Authority 22 Alice Bob

23. 4# - Public Key Certificate 23 Alice Bob Alice Bob

24. Private Key Distribution 24

25. 1# - Simple Secret Key 25

26. 2# - Secret Key with Confidentiality & Authentication 26

27. What is Public Key Infrastructure? 27

28. What is Public Key Infrastructure? 28 Public Key Infrastructure (PKI) is a framework that helps identify and solve these problems for you, by establishing safe and reliable environment for electronic transactions in the internet. It uses public key encryption techniques to protect the confidentiality, integrity, authenticity and non-repudiation of data.

29. How Public Key Infrastructure Works? 29

30. How Public Key Infrastructure Works? 30 AliceBob

31. How Public Key Infrastructure Works? (Cont:) 31

32. Question & Answer Section 32

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