Describe/implement appropriate format for entropy in documentation/code

[professorhantzen]

The documentation states entropy must be "at least" 16 bytes long, suggesting longer arrays will be accepted and utilised. However, the code truncates supplied arrays of length>16 to the first 16 bytes, without returning an error.

Which is the correct behaviour?

As it stands, the module may be supplied with a large array of entropy in good faith, only to have this reduced to the first 16 bytes without notification. A user of the module may be lead to believe seeds are being generated with a greater amount of entropy than is in fact taking place.

[professorhantzen]

My bad.

[N3TC4T]

Hey guys

Any update on this ?

is there any way for using more than 16 character length for entropy ?

[sublimator]

Create a shitload of entropy and hash it to 128 bits?? See the ripple-lib issue/pr where someone is requesting to be able to use keypairs (32 byte secrets) directly to sign txns. With that enabled you can create that 256 bit priv key anyway you want :)