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bitcore
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blockbufs2buf

This commit is contained in:
Ryan X. Charles 2014-08-25 21:02:00 -07:00
parent ae319ffcbc
commit dfa190b5a5
2 changed files with 32 additions and 0 deletions
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12
lib/expmt/cbc.js
View File

@ -27,6 +27,18 @@ CBC.buf2blockbufs = function(buf, blocksize) {
return blockbufs;
};
CBC.blockbufs2buf = function(blockbufs, blocksize) {
var bytesize = blocksize / 8;
var last = blockbufs[blockbufs.length - 1];
last = CBC.pkcs7unpad(last);
blockbufs[blockbufs.length - 1] = last;
var buf = Buffer.concat(blockbufs);
return buf;
};
CBC.encrypt = function(messagebuf, ivbuf, blockcipher, cipherkeybuf) {
var blocksize = ivbuf.length * 8;
var blockbufs = CBC.buf2blockbufs(messagebuf, blocksize);

20
test/test.cbc.js
View File

@ -34,6 +34,26 @@ describe('CBC', function() {
});
describe('@buf2blockbufs', function() {
it('should convert this buffer into one block and back into the same buffer', function() {
var buf = new Buffer(16 - 1);
buf.fill(0);
var blockbufs = CBC.buf2blockbufs(buf, 16 * 8);
var buf2 = CBC.blockbufs2buf(blockbufs, 16 * 8);
buf2.toString('hex').should.equal(buf.toString('hex'));
});
it('should convert this buffer into two blocks and back into the same buffer', function() {
var buf = new Buffer(16);
buf.fill(0);
var blockbufs = CBC.buf2blockbufs(buf, 16 * 8);
var buf2 = CBC.blockbufs2buf(blockbufs, 16 * 8);
buf2.toString('hex').should.equal(buf.toString('hex'));
});
});
describe('@encrypt', function() {
it('should return this known value', function() {