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Message-ID: <5320C6C7.9040602@gk2.sk>
Date: Wed, 12 Mar 2014 21:42:47 +0100
From: Pavol Rusnak <stick@gk2.sk>
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To: William Yager <will.yager@gmail.com>
References: <44fcb02b-3784-45a6-816a-312c78d940cd@me.com> <5320B7F1.8060701@gk2.sk> <CAG8oi1M_jnn9vzHjN5h+0x-dYEKudgJ-DEqOKrdv-sCDaFV3NA@mail.gmail.com> <5320BDD1.50001@gk2.sk> <CAG8oi1PhrmCqciECGKNa+DPp3Q_NrHP=79xxzOTkCJ655b4HXg@mail.gmail.com> <5320C27B.8090205@gk2.sk>
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Cc: Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] [RFC] Proposal: Base58 encoded HD Wallet
root key with optional encryption
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On 03/12/2014 09:37 PM, William Yager wrote:
> (that group of people includes me), PBKDF2-HMAC-SHA512 is very easy to
> implement even on devices that only have a few kB of RAM, and even though
> our number of rounds is very aggressive (2^16 and 2^21), it will still run
> in reasonable time even on very slow embedded ARM processors.
To give you some numbers: TREZOR (120MHz ARM) does 1024 rounds of
PBKDF2-HMAC-SHA512 in around 1 second.
So 2^16 is around one minute, 2^21 is around half an hour.
--
Best Regards / S pozdravom,
Pavol Rusnak <stick@gk2.sk>
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