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crypto: Streaming api for Hmac

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This commit is contained in:
isaacs 2012-10-29 15:21:25 -07:00
parent 90de2ddb77
commit 175f78c6ba
2 changed files with 10 additions and 1 deletions
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6
lib/crypto.js
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@ -189,16 +189,20 @@ Hash.prototype.digest = function(outputEncoding) {
exports.createHmac = exports.Hmac = Hmac;
function Hmac(hmac, key) {
function Hmac(hmac, key, options) {
if (!(this instanceof Hmac))
return new Hmac(hmac, key);
this._binding = new binding.Hmac();
this._binding.init(hmac, toBuf(key));
stream.Transform.call(this, options);
}
util.inherits(Hmac, stream.Transform);
Hmac.prototype.update = Hash.prototype.update;
Hmac.prototype.digest = Hash.prototype.digest;
Hmac.prototype._flush = Hash.prototype._flush;
Hmac.prototype._transform = Hash.prototype._transform;
function getDecoder(decoder, encoding) {

5
test/simple/test-crypto.js
View File

@ -230,15 +230,20 @@ var rfc4231 = [
for (var i = 0, l = rfc4231.length; i < l; i++) {
for (var hash in rfc4231[i]['hmac']) {
var str = crypto.createHmac(hash, rfc4231[i].key);
str.end(rfc4231[i].data);
var strRes = str.read().toString('hex');
var result = crypto.createHmac(hash, rfc4231[i]['key'])
.update(rfc4231[i]['data'])
.digest('hex');
if (rfc4231[i]['truncate']) {
result = result.substr(0, 32); // first 128 bits == 32 hex chars
strRes = strRes.substr(0, 32);
}
assert.equal(rfc4231[i]['hmac'][hash],
result,
'Test HMAC-' + hash + ': Test case ' + (i + 1) + ' rfc 4231');
assert.equal(strRes, result, 'Should get same result from stream');
}
}