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improve hd key perf.

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This commit is contained in:
Christopher Jeffrey 2016-03-10 14:06:49 -08:00
parent 28e105c16e
commit 7058611456
1 changed files with 8 additions and 32 deletions
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40
lib/bcoin/hd.js
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@ -77,6 +77,8 @@ function HDSeed(options) {
this.entropy = options.entropy;
this.mnemonic = options.mnemonic;
this.passphrase = options.passphrase || '';
assert(this.bits % 8 === 0);
}
HDSeed.prototype.createSeed = function createSeed(passphrase) {
@ -126,6 +128,8 @@ HD.fromSeed = function fromSeed(options) {
return HDPrivateKey.fromSeed(options);
};
HD.cache = new bcoin.lru(500);
/**
* HD Private Key
*/
@ -719,7 +723,7 @@ HDPrivateKey.prototype.derive = function derive(index, hardened) {
if (typeof index === 'string')
return this.derivePath(index);
cached = cache.get(this.xprivkey, index);
cached = HD.cache.get(this.xprivkey + '/' + index);
if (cached)
return cached;
@ -766,7 +770,7 @@ HDPrivateKey.prototype.derive = function derive(index, hardened) {
}
});
cache.set(this.xprivkey, index, child);
HD.cache.set(this.xprivkey + '/' + index, child);
return child;
};
@ -1087,7 +1091,7 @@ HDPublicKey.prototype.derive = function derive(index, hardened) {
if (typeof index === 'string')
return this.derivePath(index);
cached = cache.get(this.xpubkey, index);
cached = HD.cache.get(this.xpubkey + '/' + index);
if (cached)
return cached;
@ -1128,7 +1132,7 @@ HDPublicKey.prototype.derive = function derive(index, hardened) {
}
});
cache.set(this.xpubkey, index, child);
HD.cache.set(this.xpubkey + '/' + index, child);
return child;
};
@ -1263,34 +1267,6 @@ function pbkdf2(key, salt, iterations, dkLen) {
return DK;
}
HD.cache = new bcoin.lru(500, function(key, value) {
return 1;
});
var cache = {
data: {},
count: 0
};
cache.set = function(key, index, value) {
key = key + '/' + index;
if (this.count > 500) {
this.data = {};
this.count = 0;
}
if (this.data[key] === undefined)
this.count++;
this.data[key] = value;
};
cache.get = function(key, index) {
key = key + '/' + index;
return this.data[key];
};
/**
* Expose
*/