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HDNode: enforces sane seed lengths

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This commit is contained in:
Daniel Cousens 2014-07-11 16:33:39 +10:00
parent 656de37fc0
commit ddcde038d0
2 changed files with 16 additions and 0 deletions

4
src/hdnode.js
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@ -51,6 +51,10 @@ HDNode.HIGHEST_BIT = 0x80000000
HDNode.LENGTH = 78
HDNode.fromSeedBuffer = function(seed, network) {
assert(Buffer.isBuffer(seed), 'Expected Buffer, got' + seed)
assert(seed.length >= 16, 'Seed should be atleast 128 bits')
assert(seed.length <= 64, 'Seed should be atmost 512 bits')
var I = crypto.HmacSHA512(seed, HDNode.MASTER_SECRET)
var IL = I.slice(0, 32)
var IR = I.slice(32)