3 ms·
It isn't. You cannot derive an arbitrary length key with bcrypt.
by Genbox 2y ago
It isn't. You cannot derive an arbitrary length key with bcrypt.
- kragen 2y agoYou can't, that's true, and in particular you can't get over 184 bits out of it. But that's also true of, for example, PBKDF1, which I think is the algorithm the term "KDF" was invented to describe. And bcrypt is often included in lists of KDFs, for example by OWASP and Wikipedia. Arbitrary-length digests are certainly highly desirable for a KDF, but I don't think they are uncontroversially part of the definition of the term.