Hot answers tagged multiple-encryption
2
Step 1: good job, this is the right way. You can also use bcrypt or scrypt for extra resistance. Make sure you have chosen sufficiently strong parameters, that is, 64-bit salt and 10000 rounds absolute minimum.
Step 2: no! once you have a strong derived master key, you don't need to apply PBKDF2 on any keys derived from this master key. You are just wasting ...
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