How do you create a hash function?

With modular hashing, the hash function is simply h(k) = k mod m for some m (usually, the number of buckets). The value k is an integer hash code generated from the key. If m is a power of two (i.e., m=2p), then h(k) is just the p lowest-order bits of k.

What makes a good cryptographic hash function?

A cryptographic hash function must be deterministic, meaning that the same message always results in the same hash. Ideally it should also have the following properties: it is quick to compute the hash value for any given message. it is infeasible to find two different messages with the same hash value.

What are the requirements and characteristics needed for a secure hash function?

Answer

• There should be a fixed length output generated by the hash function.
• there should be easiness for finding the hash function for a certain or given message.
• There should not be same hash value for the two different messages.

What are the requirements for a cryptographic hash function H?

The basic requirements for a cryptographic hash function are:

• the input can be of any length,
• the output has a fixed length,
• H(x) is relatively easy to compute for any given x ,
• H(x) is one-way,
• H(x) is collision-free.

What are some common uses of cryptographic hashes?

Hash functions are used for cryptocurrency, password security, and message security.

What is a feature of a cryptographic hash function Mcq?

Explanation: The Hash functions offer all the mentioned properties in a data compression: i.e. authentication, Non repudiation and Data Integrity.

Can we apply hashing on string?

String hashing is the way to convert a string into an integer known as a hash of that string. An ideal hashing is the one in which there are minimum chances of collision (i.e 2 different strings having the same hash).