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fromBuffer convenience function for pubkey

This commit is contained in:
Ryan X. Charles 2014-09-15 11:32:39 -07:00
parent 385edbcc92
commit 543762bc67
2 changed files with 29 additions and 0 deletions
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4
lib/pubkey.js
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@ -29,6 +29,10 @@ Pubkey.prototype.fromPrivkey = function(privkey) {
return this;
};
Pubkey.prototype.fromBuffer = function(buf) {
return this.fromDER(buf);
};
Pubkey.prototype.fromDER = function(buf) {
if (buf[0] == 0x04) {
var xbuf = buf.slice(1, 33);

25
test/pubkey.js
View File

@ -40,6 +40,31 @@ describe('Pubkey', function() {
});
describe('#fromBuffer', function() {
it('should parse this uncompressed public key', function() {
var pk = new Pubkey();
pk.fromBuffer(new Buffer('041ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341', 'hex'));
pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
});
it('should parse this compressed public key', function() {
var pk = new Pubkey();
pk.fromBuffer(new Buffer('031ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
pk.point.getX().toString(16).should.equal('1ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a');
pk.point.getY().toString(16).should.equal('7baad41d04514751e6851f5304fd243751703bed21b914f6be218c0fa354a341');
});
it('should throw an error on this invalid public key', function() {
var pk = new Pubkey();
(function() {
pk.fromBuffer(new Buffer('091ff0fe0f7b15ffaa85ff9f4744d539139c252a49710fb053bb9f2b933173ff9a', 'hex'));
}).should.throw();
});
});
describe('#fromDER', function() {
it('should parse this uncompressed public key', function() {