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[Evans] So with a salted password scheme what weamp;#39;ll store in the password file, weamp;#39;ll have the users, weamp;#39;ll have an extra column that weamp;#39;ll call the salt, and then weamp;#39;ll store the encrypted password. What the salt is is random bits. They donamp;#39;t need to be kept secret. For the UNIX scheme there were 12 random bits. And theyamp;#39;re different for each user. Thatamp;#39;s why theyamp;#39;re stored in the table. So for user Alice letamp;#39;s say we have the salt 011010001111, which is an apparently random sequence. What weamp;#39;ll store as the encrypted password is the result of hashing the salt concatenated with Aliceamp;#39;s password. And there are different ways of doing this. Some hash functions can be modified to behave differently based on another parameter. But if itamp;#39;s a simple hash function that just takes an input, we can make the input the salt concatenated with the password. And then for Bob weamp;#39;ll do the
