If you have a hash, you can add items to it by referencing them by key: Here, like [ ] creates an empty array, { } will create a empty hash. Arrays have zero or more elements in a specific order, where elements may be duplicated. Hashes have zero or more elements organized by key, … Read more
Editor’s note: the approach below has serious security implications and, depending upon the version of jQuery you are using, may expose your users to XSS attacks. For more detail, see the discussion of the possible attack in the comments on this answer or this explanation on Security Stack Exchange. You can use the location.hash property … Read more
This is bcrypt: Generate a random salt. A “cost” factor has been pre-configured. Collect a password. Derive an encryption key from the password using the salt and cost factor. Use it to encrypt a well-known string. Store the cost, salt, and cipher text. Because these three elements have a known length, it’s easy to concatenate them and store them … Read more
Just try it: So you can get hash of tuple and frozenset since the are immutable, and you can’t do it for list and set because they are mutable.
The Wikipedia article will have a lot of technical information, but a simplistic view of hashing is something like the following. Imagine that there’s a magical function that can give a number to any object. Given the same object, it always return the same number. Immediately now you have a quick way to test if … Read more
These following two different 128 byte sequences hash to the same: MD5 Hash: 79054025255fb1a26e4bc422aef54eb4 The differences below are highlighted (bold). Sorry it’s kind of hard to see. d131dd02c5e6eec4693d9a0698aff95c 2fcab58712467eab4004583eb8fb7f89 55ad340609f4b30283e488832571415a 085125e8f7cdc99fd91dbdf280373c5b d8823e3156348f5bae6dacd436c919c6 dd53e2b487da03fd02396306d248cda0 e99f33420f577ee8ce54b67080a80d1e c69821bcb6a8839396f9652b6ff72a70 and d131dd02c5e6eec4693d9a0698aff95c 2fcab50712467eab4004583eb8fb7f89 55ad340609f4b30283e4888325f1415a 085125e8f7cdc99fd91dbd7280373c5b d8823e3156348f5bae6dacd436c919c6 dd53e23487da03fd02396306d248cda0 e99f33420f577ee8ce54b67080280d1e c69821bcb6a8839396f965ab6ff72a70 The visualization of the collision/block1 (Source: Links.Org) The visualization of the … Read more
Source: http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
I’ve the file path. How can I get the MD5 hash of it?
First sort the keys by the associated value. Then get the values (e.g. by using a hash slice). Or if you have a hash reference.
Knuth’s multiplicative method: In general, you should pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function covers all your hash space uniformly. Edit: The biggest disadvantage of this hash function is that it preserves divisibility, so if … Read more