Is SHA512 good for passwords?
The SHA1, SHA256, and SHA512 functions are no longer considered secure, either, and PBKDF2 is considered acceptable. The most secure current hash functions are BCRYPT, SCRYPT, and Argon2. MD5, SHA1, SHA256, and SHA512 functions do not include a salt and a separate function must be used to add the salt.
Is SHA used for passwords?
TL;DR; SHA1, SHA256, and SHA512 are all fast hashes and are bad for passwords. SCRYPT and BCRYPT are both a slow hash and are good for passwords. Always use slow hashes, never fast hashes. User passwords must be stored using secure hashing techniques with a strong algorithm like SHA-256.
How long does it take to break a SHA-512 hash?
SHA-512 is a fast hash not well suited to storing passwords, hashcat can do 414 million SHA-512 hashes per second, so if a password is common it will be broken in less then a second. If you are wanting to store passwords please consider designed slow hash like PBKDF2 or bcrypt.
Is there a password algorithm that supports Linux SHA-256?
A Loadable Password Algorithm (LPA) model is available that supports the Linux SHA-256 and SHA-512 password cryptographic algorithm. The Linux SHA-256 and SHA-512 password cryptographic algorithm is supported by other operating systems and was published in the public domain by Ulrich Drepper ( https://www.akkadia.org/drepper/SHA-crypt.txt ).
Which is faster to generate a hash SHA256 or SHA512?
It is “cheaper” (faster) to generate SHA256 than SHA512. So from the security perspective a potential attacker will need more time to generate all possible SHA512 hashes to brute force a hashed password from your database.
Is the password hashing routine compatible with Aix?
One of the important things for this to be able to work with AIX is that AIX’s password hashing routine needs to have support for the ‘prefix_dollar’ option, in order to provide the same type of prefix that Linux expects.