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Example code of paragonie/password_lock

Informations about the package password_lock

Password Lock

Build Status

MIT Licensed - feel free to use to enhance the security of any of your PHP projects

Wraps Bcrypt-SHA384 in Authenticated Encryption. Published by Paragon Initiative Enterprises. Check out our other open source projects too.

Depends on defuse/php-encryption for authenticated symmetric-key encryption.

How is this different than "peppering"?

Peppering strategies are usually accomplished through a keyed hash function (e.g. HMAC-SHA256) and applies to the password before it's passed to the salted hash API (i.e. bcrypt). If your pepper/HMAC key is ever compromised, you have to reset every user's password and it becomes a headache.

A hash then encrypt strategy offers agility; if your secret key is compromised (but, miraculously, the hashes are not), you can decrypt all of your users' hashes then re-encrypt them with a new key and they'll never suffer the inconvenience of an unscheduled password reset.

How much more secure is this than just using bcrypt?

Here's a proof-of-concept for the first two points.

But realistically, this library is only about as a secure as bcrypt.

Usage Examples

Hash Password, Encrypt Hash, Authenticate Ciphertext

Verify MAC, Decrypt Ciphertext, Verify Password

Determine if a re-hash is necessary

Re-encrypt a hash with a different encryption key

Migrate from Version 1 of the library

Support Contracts

If your company uses this library in their products or services, you may be interested in purchasing a support contract from Paragon Initiative Enterprises.

All versions of password_lock with dependencies

PHP Build Version
Package Version
Requires php Version ^7.3|^8
defuse/php-encryption Version ^2
paragonie/constant_time_encoding Version ^2
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