In the case of password storage, consider the following: I have an idea that one can exhaust the entropy of input to the MD5 function by using a 128 bit random value as the password (indeed, any hash ...
For example, if the entropy of a password is 30 bits, what is the entropy of the password when you hash it with MD5?
For a project I wonder if there exists some kind of fixed-size checksumming/fingerprinting function in which based on this fingerprint given data block 1, it is easy to generate more data blocks that ...
I have the need for a hexadecimal token that is smaller than the normal length of the hexadecimal representation of a sha-256 hash. Should I take the first bits or the last bits? Which of them ...