saltedhash

问题 I am using the following code to hash (and hopefully salt) user passwords before I store them in my DB. // hash the password before the user is saved ConsultantSchema.pre('save', function(next) { var user = this; // hash the password only if the password has been changed or user is new if (!user.isModified('password')) return next(); // generate the hash bcrypt.hash(user.password, null, null, function(err, hash) { if (err) { logger.error("bcrypt.hash "+err); return next(err); } // change the

问题 I am using the following code to hash (and hopefully salt) user passwords before I store them in my DB. // hash the password before the user is saved ConsultantSchema.pre('save', function(next) { var user = this; // hash the password only if the password has been changed or user is new if (!user.isModified('password')) return next(); // generate the hash bcrypt.hash(user.password, null, null, function(err, hash) { if (err) { logger.error("bcrypt.hash "+err); return next(err); } // change the

问题 This is the second time I'm using apache shiro in a project but the first time am salting the password.this time around i use apache shiro 1.2.0 . I'm using shiro in a web application using jsp, spring, JPA(spring-data-jpa) and using SHA256 for encryption then base64 before saving to database. I have a SaltedJPARealm , a Sha256CredentialMatcher which implements a HashedCredentialMatcher. this is how i do creating a user in my controller RandomNumberGenerator rng = new

问题 I am new to storing passwords on databases and from what I read I have created a simple php script below <?php $salt = openssl_random_pseudo_bytes (16); $password = "test"; $hash = hash ("sha512" , $salt . $password); echo $hash; ?> Am I doing this correctly? Should the salt be stored in databases as byte datatype? Should the final hash be stored at String datatype in database? 回答1: The SHA* algorithms are not appropriate to hash passwords, because they are ways too fast, and therefore can be

问题 I am working with a legacy application that stored passwords in plaintext. I have ported the application to spring 3 mvc + security. I have also successfully gotten spring security handling the authentication and authorization using sha256 + a salt based on the username. This all works great, however as part of the deployment, I will need to migrate the existing database to use the new password schema. I am not sure how spring security does it's password hashing with a salt, so i am unable to

问题 I am working with a legacy application that stored passwords in plaintext. I have ported the application to spring 3 mvc + security. I have also successfully gotten spring security handling the authentication and authorization using sha256 + a salt based on the username. This all works great, however as part of the deployment, I will need to migrate the existing database to use the new password schema. I am not sure how spring security does it's password hashing with a salt, so i am unable to

问题 Ok, I’m trying to understand the reason to use salt. When a user registers I generate a unique salt for him/her that I store in DB. Then I hash it and the password with SHA1. And when he/she is logging in I re-hash it with sha1($salt.$password) . But if someone hacks my database he can see the hashed password AND the salt. Is that harder to crack than just hashing the password with out salt? I don’t understand … Sorry if I’m stupid … 回答1: If you don't use a salt then an attacker can

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I was reading a few articles on salts and password hashes and a few people were mentioning rainbow attacks. What exactly is a rainbow attack and what are the best methods to prevent it? 回答1: The wikipedia article is a bit difficult to understand. In a nutshell, you can think of a Rainbow Table as a large

问题 I need to implement a Forgot Password page, but my passwords are salted & hashed. So I can't retrieve them conventionally. My idea was to do the following: When an user clicks the Forgot Password link, they naturally need to type in their email address (which is also their username). Their password gets reset to a hashed & salted password i made. Then, i send an email to them which contains a link to a new page where they can type in their new password. The link contains the new hashed &

问题 I have a login page which asks for a username and password. This page has a checkbox "Remember Me". Authentication is: For the username provided, convert the provided password to a hash using the salt stored with the user db record and compare the hash to the stored hash. When a user ticks the box, what should I store in their cookie so they auto login next time they visit? I was thinking that a good way was to store their username and a hashed value of their password in a cookie and to re