What is cryptography and how it works?
• Cryptography is the science and art of transforming messages to make them secure and immune to attack. 7. ASYMMETRIC KEY CRYPTOGRAPHY SYMMETRIC KEY CRYPTOGRAPHY 8. • Also known as secret key. Sender & receiver uses same key & an encryption/decryption algorithm to encrypt/decrypt data. i.e. the key is shared. 9.
What are the characteristics of a symmetric key cryptography?
SYMMETRIC KEY CRYPTOGRAPHY ASYMMETRIC KEY CRYPTOGRAPHY 1) The same algorithm with the same key is used for encryption and decryption. 2) The key must be kept secret. 3) It may be impossible or at least impractical to decipher a message if no other information is available.
What are the main challenges in cryptography?
While cryptography is a powerful tool to achieve information security, one of the main challenges in cryptosystems is to maintain the secrecy of the cryptographic keys.
Which type of cryptography provides the best encryption?
One time pad:This type of cryptography provides the best encryption in the world, the sender and receiver need to have the copy of the identical pad i.e. a group of random numbers and in this cryptography, the transmission takes place over a secure line. The one-time pad is same as the symmetric key but this gets destroyed after a single use.
What is symmetric key cryptography?
New Lecture Schedule Symmetric Key Cryptography and Cryptographic Hashes – I Communications Engineers Coat of Arms Symmetric Encryption Symmetric Key cryptographic algorithms use a secret known to the authorized parties called a “key”. Encryption and Decryption use the same key.
Who wrote an introduction to cryptography?
An Introduction to Cryptography Author John Manferdelli Last modified by John L Manferdelli Created Date 1/7/1999 11:01:52 PM Document presentation format On-screen Show Other titles
What are the best resources to learn about cryptography?
Koblitz, Algebraic Aspects of Cryptography. Springer. Konheim, Cryptography: A Primer. Wiley. General Modern References Landau, DES, AES, Survey article. Notices AMS. MacWilliams et. al., Theory of Error Correcting Codes. North Holland. Menezes, van Oorshot, Vanstone, Handbook of Applied Cryptography.