Cryptography Reference
In-Depth Information
C
i
=
b
i
1
⊕
b
i
2
⊕
b
i
3
⊕
b
i
4
⊕
b
i
5
⊕
b
i
6
⊕
b
i
7
⊕
b
i
8
(11.2)
Every block of 8 bits constitutes an ASCII-encoded character.
1. Encode the string
CRYPTO
to its binary or hexadecimal representation.
2. Calculate the (6-bit long) hash value of the character string using the previously
defined equation.
3. “Break” the hash function by pointing out how it is possible to find (meaningful)
character strings which result in the same hash value. Provide an appropriate
example.
4. Which cruical property of hash functions is missing in this case?
