> From: owner-openssl-us...@openssl.org [mailto:owner-openssl-
> us...@openssl.org] On Behalf Of anthony berglas
> 
> Taking a different slant, is it possible to provide the "Entropy" using a
pass
> phrase.  So a given pass phrase will always generate the same key pair.
 This
> means that for simple applications no key store is required.  Much like
> password based (symmetric) encryption.
> 
> Any ideas as to how hard that would be to do with Open SSL?  Has anyone
> else done it?

You want at least 2048 bits of entropy.  That's a very long passphrase.
Also, unless you randomly generate your passphrase in hex or binary, it's
bound to be a lot less than 2048 bits of entropy even if it's 2048 bits
long.

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