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AI-enhanced description. Gopal Sakarkar. Public key cryptography uses two keys, a public key that can encrypt messages and a private key that decrypts messages. It has six components: plain text, encryption algorithm, public and private keys, ciphertext, and decryption algorithm.
Lecture 12: Public-Key Cryptography and the RSA Algorithm Lecture Notes on “Computer and Network Security” by Avi Kak (kak@purdue.edu) March 7, 2024 3:20pm © 2024 Avinash Kak, Purdue University Goals: To review public-key cryptography To demonstrate that confidentiality and sender-authentication can be achieved simultaneously with public ...
Public-Key Cryptography. public-key/two-key/asymmetric cryptography involves the use of two keys: a public-key, which may be known by anybody, and can be used to encrypt messages , and verify signatures. a related private-key, known only to the recipient, used to decrypt messages , and sign (create) signatures.
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Solution 2: Hybrid encryption. Assume: Symmetric encryption scheme (Gen_SE, Enc_SE, Dec_SE) Public-key encryption scheme (Gen_PKE, Enc_PKE, Dec_PKE) Use public-key encryption to establish a shared session key. Avoids quadratic problem, assuming existence of phonebook. Avoids problem of key distribution.
Sep 26, 2010 · Public Key Cryptography | PPT. Sep 25, 2010 • Download as PPT, PDF •. 2 likes • 2,813 views. AI-enhanced description. anusachu . This document summarizes public-key cryptography. It discusses how public-key cryptography uses unique public and private keys to encrypt and decrypt messages securely.
The science of keeping data secure Symmetric Ciphers Also known as private key Symmetric Cipher Example k = 4 Symmetric Cipher Example Much more elaborate transformations are available Asymmetric cipher Also known as public key Diffie-Hellman One of the first public key cryptographic systems Diffie-Hellman Based on a special case of the subset ...
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