Tutorial by Topics: hash

A Hash is a dictionary-like collection of unique keys and their values. Also called associative arrays, they are similar to Arrays, but where an Array uses integers as its index, a Hash allows you to use any object type. You retrieve or create a new entry in a Hash by referring to its key. ...

As more secure web services avoid storing passwords in plain text format, languages such as PHP provide various (undecryptable) hash functions to support the more secure industry standard. This topic provides documentation for proper hashing with PHP. string password_hash ( string $password , ...

MD5 and SHA1 are insecure and should be avoided. The examples exist for educational purposes and due to the fact that legacy software may still use these algorithms.

Each implementation of Equals must fulfil the following requirements: Reflexive: An object must equal itself.x.Equals(x) returns true. Symmetric: There is no difference if I compare x to y or y to x - the result is the same. x.Equals(y) returns the same value as y.Equals(x). Transit...

A Hash Table is a structure which maps keys to values. See Hash Table for details. An important concept which relies on Hash Tables is Splatting. It is very useful for making a large number of calls with repetitive parameters.

There is a built in easy way to read files in binary within VBA, however it has a restriction of 2GB (2,147,483,647 bytes - max of Long data type). As technology evolves, this 2GB limit is easily breached. e.g. an ISO image of Operating System install DVD disc. Microsoft does provide a way to overco...

hashlib implements a common interface to many different secure hash and message digest algorithms. Included are the FIPS secure hash algorithms SHA1, SHA224, SHA256, SHA384, and SHA512.

Hashtable is a class in Java collections which implements Map interface and extends the Dictionary Class Contains only unique elements and its synchronized

Concepts of weak Hashmap

LinkedHashMap class is Hash table and Linked list implementation of the Map interface, with predictable iteration order. It inherits HashMap class and implements the Map interface. The important points about Java LinkedHashMap class are: A LinkedHashMap contains values based on the key. It contai...