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I have been looking through ths hashlib documentation but haven't found anything talking about using salt when hashing data. Help would be great. Rakis Samir's answer is correct but somewhat cryptic. Basically, the salt is just a randomly derived bit of data that you prefix or postfix your data with to dramatically increase the complexity of a dictionary attack on your hashed value. So given a salt s and data d you'd just do the following to generate a salted hash of the data: import hashlib hashlib.sha512( s + d ).hexdigest() See this wikipedia article for more details Just add the salt to

This question already has an answer here: Is it possible to reverse a sha1? 9 answers I have a requirement to reverse translate a SHA1 encrypted text to plain text. I need the Java Code to it. many forums say that it cant be done but i have found a link http://www.stringfunction.com/sha1-decrypter.html which does exactly the same. I have tested it. Now i need the algorithm to implement in Java. Please help!!! It's plain impossible. SHA1, like all cryptographic digest algorithms, is not an encryption algorithm, but a hashing algorithm. It takes any text, as long as you want, and transforms it

I've been given this Swift code to try and make work in PHP: finalStr = Encryption.sha256(inputStr) ... class Encryption { static func sha256(_ data: Data) -> Data? { guard let res = NSMutableData(length: Int(CC_SHA256_DIGEST_LENGTH)) else { return nil } CC_SHA256((data as NSData).bytes, CC_LONG(data.count), res.mutableBytes.assumingMemoryBound(to: UInt8.self)) return res as Data } static func sha256(_ str: String) -> String? { guard let data = str.data(using: String.Encoding.utf8), let shaData = Encryption.sha256(data) else { return nil } let rc = shaData.base64EncodedString(options: [])

I have a large and "unique" integer (actually a SHA1 hash). Note: While I'm talking here about SHA1 hashes, this is not a cryptography / security question! I'm not trying to break SHA1. Imagine a random 160-bit integer instead of SHA1 if that will help. I want (for no other reason than to have fun) to find an algorithm to map that SHA1 hash to a computer-generated (pseudo-)English phrase. The mapping should be bidirectional (i.e., knowing the algorithm, one must be able to calculate the original SHA1 hash from that phrase.) The phrase need not make sense. I would even settle for a whole

The following bash and Perl scripts mysteriously give different results. Why? #!/bin/bash hash=`echo -n 'abcd' | /usr/bin/shasum -a 256`; echo $hash; #!/usr/bin/perl $hash = `echo -n 'abcd' | /usr/bin/shasum -a 256`; print "$hash"; The bash script: $ ./tst.sh 88d4266fd4e6338d13b845fcf289579d209c897823b9217da3e161936f031589 - The Perl script: $ ./tst.pl 61799467ee1ab1f607764ab36c061f09cfac2f9c554e13f4c7442e66cbab9403 - the heck? Summary: In your Perl script, -n is being treated as an argument to include in the output of echo , not a flag to suppress the newline. ( Try $hash = `echo -n 'abcd'`;