Cryptography and Encryption Basics - II

-

Cryptography and Encryption Basics - II


RC4 



RSA cryptography



Key Exchange:


Diffie-Hellman Key Exchange:


Key Escrow;


Trust Module:




Hash Functions:




Public Key Infrastructure (PKI) and Digital Certificates:

PKI is nothing but Publick key infrastructure. It is framework for Creating, Managing, distributing Storing and revoking of Digital certificates, public keys & Private keys. 


  • In order to blind public keys with their associated user (owner or the private Key), PKIs use digital certificates 
  • There is an entity in PKI which is called as CA (Certificate Authority) Which produces and verifies the digital certificate
PKI is framework that structure, trust and scalability to use the digital certificates and keys. 
  • While Certificates and Keys provides a raw mechanism for cyder security properties like authentication, encryption and digital signature.
  • PKI ensures that they are properly managed, trusted and also maintained throughout the entire life cycle 
 

Basic Functionalities of CA:

  • Generate Certificate 
  • Publish Certificate
  • Verifying Certificate
  • Revocate Certificate

Types of CA

  • Root CA
  • Intermediate CA
  • END Entity CA

Challenges of CA 

  • Security 
  • Scalability 
  • Inter-operability 
  • Reliability 


Digital signature: 

Digital signatures are related to encryption, but do not mean a message is in encrypted. A digital signature is a verification of the authenticity of the digital message or documents. The digital signature makes sure that the message was created by a known sender, and the message was not altered in transit. 




Comments

Post a Comment

Popular posts from this blog

Overview of ISO/SAE 21434 Standard

-
Image
ISO/SAE 21434, jointly published by the International Standardization Organization (ISO) and the Society of Automotive Engineers (SAE), serves as a comprehensive cybersecurity framework for electronic systems within road vehicles. Developed to bolster cybersecurity across the entire lifecycle of automotive products, this standard outlines essential vocabulary, objectives, requirements, and guidelines. Purpose and Scope: The primary objective of ISO/SAE 21434 is to enhance cybersecurity measures for vehicles throughout their lifecycle. By providing a standardized framework, this standard facilitates the establishment of cybersecurity policies, risk management practices, and a cybersecurity-oriented culture within organizations operating in the automotive industry. Three Pillars: ISO/SAE 21434 is structured around three main pillars: Cyber Security Governance:   Establishing policies, processes, and cultural norms to govern cybersecurity activities within organizations. Risk Man...
Read more

Cryptography and Encryption Basics - I

-
Image
Cryptography and Encryption Basics I What is encryption Encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized can't.  Converts information from plain text into encrypted ciphertext. But how...? Encryption used algorithm! An algorithm is a procedure that the encryption process follows. The specific algorithm is called the ciper or code. there are many types so encryption algorithms. The encryption's goal and level of security determine the most effective solution. Triple DES, RSA and Blowfish are some examples of encryption algorithms or Ciphers. What is Decryption? Decryption is the process of taking encoded or encrypted text or other data and converting it back into text that you or the computer can read and understand.  converts information from encrypted ciphertext into plain text  Basic Example  Private key vs Public Key Private Key (symmetric key): This means that ...
Read more

ECU LIST

-
Image
 1. BCM (Body Control Module)    - Function: The BCM is responsible for controlling various electronic systems within the vehicle's body. This includes functions like interior lighting, power windows, door locks, windshield wipers, and other comfort and convenience features.    - Importance: It acts as a central hub for various sensors and inputs, ensuring that the vehicle’s body-related electronics operate smoothly.  2. Gateway ECU    - Function: The Gateway ECU acts as a communication hub between different networked ECUs in the vehicle. It ensures that data is correctly routed between systems like powertrain, infotainment, and body control.    - Importance: Vital for ensuring seamless communication between various subsystems in modern vehicles.  3. ETM (Electric Traction Motor)    - Function: Manages the electric traction motor, which provides propulsion in electric or hybrid vehicles. It controls the motor's speed, torq...
Read more