Hashed password storage (?)

Not sure if chopped is the right word to describe this issue. However, if not, please replace the word hash with some word you think is appropriate.

Then, as the registration form where a user has yet to enter some data, and others one password. Now, I don't want the password to be stored in plain text, how you can chop a password to appear as a long string of characters in your mysql db table (using php)?

As a result, how do you handle the "password recovery" feature also?

I google the question, but what I came on does not seem to do the trick.

pearl_jan wrote:

I do not want the password to be stored in plain text, how you can chop a password to appear as a long string of characters in your mysql db table (using php)?

As a result, how do you handle the "password recovery" feature also?

The most common ways to do this are to use the sha1()or md5() function . Just pass the password as an argument to a function and store the result in the database. Note that the md5() function always creates a 32 character string, and sha1() produces 40 characters, so your password column must be the same width.

Encryption of passwords with one of these hash functions is a one-way process. You can't decipher the value once it has been encrypted. When you connect to a user, you pass the value sent to the same function and compare the result with the value stored in the database.

Because it is a one-way process, you cannot recover a "lost password". A new password should be created.

[Edited by David powers on 12 July 2016] The above information was correct at the time where it was initially published in 2011. For PHP 5.5 and later versions, you must always use the function password_hash() to hash passwords before storing them in the database. Use password_verify() to check a password encrypted in this way.

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