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FAF.CS21.1 Criptografie și securitate
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Check which triplets of the numbers x, y and n satisfy the condition y = x-1 mod n?
Using the Vigenère cipher with the key k, the message m was encrypted into the cryptogram c.Which letter in the key participated in the encryption of the highlighted letter of the message?
m = SENDMEANENCRYPTEDMESSAGEk = BREAKING
In a modern encryption algorithm the key generation is based on any random number generation algorithm.
An encryption algorithm is unconditionally secure (unconditionally secure), if it cannot be broken, even having an infinite amount of resources.
The Kerckhoff principle in cryptography states that both the encryption algorithm and the key must be kept secret to ensure confidential information exchange.
Which of the following key values k = (a, b) can be chosen to encrypt message m using the affine encryption algorithm?The alphabet of the language in which the message m is written consists of n letters.