atnbueno

Do it. You'll learn a lot. But afterwards you'll switch to an already existing password manager. Mainly because you can't think of everything, and they have years of experience (and frequently external audits). As other commenters have said, not everything is the storage of data.

If you use the appropiated hash functions (PBKDF2, bcrypt, scrypt, not "AES-256") you are not rolling "your own crypto".