Theory of cryptography

Advantage (cryptography)

In cryptography, an adversary's advantage is a measure of how successfully it can attack a cryptographic algorithm, by distinguishing it from an idealized version of that type of algorithm. Note that in this context, the "adversary" is itself an algorithm and not a person. A cryptographic algorithm is considered secure if no adversary has a non-negligible advantage, subject to specified bounds on the adversary's computational resources (see concrete security). "Negligible" usually means "within O(2−p)" where p is a security parameter associated with the algorithm. For example, p might be the number of bits in a block cipher's key. (Wikipedia).

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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.

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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.

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From playlist Applied Cryptography

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Related pages

Big O notation | Permutation | Chosen-plaintext attack | Random oracle | Security parameter | Stirling's approximation | Oracle machine | Concrete security | Chosen-ciphertext attack | Block cipher | Computational complexity theory | Factorial | Brute-force search | Adversary (cryptography) | Algorithm | Key (cryptography) | Cryptography | Data Encryption Standard