Contents
Is Blowfish encryption or hash?
Blowfish is not a hashing algorithm. It’s an encryption algorithm. What that means is that you can encrypt something using blowfish, and then later on you can decrypt it back to plain text.
What is the most convenient hashing method to be used to hash passwords in PHP?
bcrypt
Using bcrypt is the currently accepted best practice for hashing passwords, but a large number of developers still use older and weaker algorithms like MD5 and SHA1. Some developers don’t even use a salt while hashing. The new hashing API in PHP 5.5 aims to draw attention towards bcrypt while hiding its complexity.
Is PHP password hash safe?
PHP provides a native password hashing API that safely handles both hashing and verifying passwords in a secure manner. Another option is the crypt() function, which supports several hashing algorithms.
What is Blowfish encryption used for?
Blowfish is an encryption algorithm that can be used as a replacement for the DES or IDEA algorithms. It is a symmetric (that is, a secret or private key) block cipher that uses a variable-length key, from 32 bits to 448 bits, making it useful for both domestic and exportable use.
Can bcrypt hash be reversed?
You simply can’t. If you’re lucky you’ll find a match, but if the password is a strong one then you likely won’t find a match. Bcrypt has the added security characteristic of being a slow hash.
Is password_hash secure?
The result hash from password_hash() is secure because: It uses a strong hashing algorithm. It adds a random salt to prevent rainbow tables and dictionary attacks.
Is Blowfish faster than AES?
Blowfish is an encryption algorithm, or cipher, specifically a block cipher. Blowfish at 64 bits can be faster than AES (128) particularly when the AES implementation is not maximized to AES-256. However, AES-256 — the strongest encryption standard — is infeasible to brute force with current computing resources.
Is twofish still secure?
The answer is yes, Twofish is extremely safe to use. The reason the NIST did not wish to utilize Twofish is due to it being slower, compared to the Rjindael encryption algorithm. One of the reasons that Twofish is so secure is that it uses a 128-bit key, which is almost impervious to brute force attacks.
How to generate password hashes in PHP 5.5?
PHP 5.5 has a built-in function password_hash for generating password hashes, which as of now defaults to bcrypt (Blowfish), but that may change over time. You can also specify Blowfish explicitly. Using this our better_crypt function can be replaced with:
How to generate a password hash in Blowfish?
The crypt function first identifies what flavour of encryption was used, extracts the salt, and uses that to generate a hash of the password the user input for comparison. 2. Change the hash type to Blowfish
How does the crypt function in Blowfish work?
When the user tries to login you simply check whether the hash of the password they enter, using the database hash as a salt, re-creates (matches) the database hash: The crypt function first identifies what flavour of encryption was used, extracts the salt, and uses that to generate a hash of the password the user input for comparison.
How does the crypt function work in PHP?
The crypt function is extremely easy to use. You generate or take from user input a new password and call crypt to generate a hashed version for storing in a database: Depending on your php version and configuration this will return a DES-based hash such as: or, better, an MD5 hash: