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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    Bas...

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 ...

UDS Protocol Interview Question  Functional Group in UDS Diagnostic and communicatio management Data Transmission Stored Data Transmission Input/Output Control Remote Activation of Rountine Upload / Download Total (27 )services untill 2020,As Per ISO 14229 2020 there are (28) services. Why it is called UDS Unified       - Term 'Unified' in this context mens  that it is an international and not a Company- Specific Standard Diagnostic - Finding Root cause Service       - checking with existing content What are the types of request in UDS Valid request  Invalid request What are types for Responce in UDS. Positive responce Negative Responce What are type of NRC ISO Specific (0x12,0x13,0x22) ISO Reserved or Manufacture Specific (0x32,0x84 etc) What are the commonly used NRC 0x12 0x13 0x22 0x24 0x33 In Default which session will be active UDS supports different Operating session, which can be changed using the "Diagnostic Session control". Dependi...