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Fixup curve25519 module

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Rename methods on the curve25519 interface to be a bit more high level.
Cleanup emscripten wrapper class, wrap long lines and such. Also add a
grunt task alias for building the emscripten compiled curve
implementation.
This commit is contained in:
lilia 2014-11-08 23:41:14 -08:00
parent a1a528ccdd
commit 2f58ea5f3a
6 changed files with 74 additions and 51 deletions
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39
js/curve25519_compiled.js
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@ -2919,49 +2919,52 @@ run();
basepoint[0] = 9;
window.curve25519 = {
privToPub: function(privKey) {
keyPair: function(privKey) {
var priv = new Uint8Array(privKey);
priv[0] &= 248;
priv[31] &= 127;
priv[31] |= 64
// Where to store the result
var pubKey = new Uint8Array(32);
//var publicKey_ptr = Module._malloc(32);
var publicKey_ptr = _allocate(pubKey);
var publicKey_ptr = Module._malloc(32);
// Get a pointer to the private key
var privateKey_ptr = _allocate(priv);
// The basepoint for generating public keys is 0x09 followed by 31 null bytes
// The basepoint for generating public keys
var basepoint_ptr = _allocate(basepoint);
// The return value is just 0, the operation is done in place
var err = Module._curve25519_donna(publicKey_ptr, privateKey_ptr, basepoint_ptr);
var err = Module._curve25519_donna(publicKey_ptr,
privateKey_ptr,
basepoint_ptr);
var res = new Uint8Array(32);
_readBytes(publicKey_ptr, 32, res);
return Promise.resolve({ pubKey: res.buffer, privKey: privKey });
},
ECDHE: function(pubKey, privKey) {
sharedSecret: function(pubKey, privKey) {
// Where to store the result
var sharedKey_ptr = Module._malloc(32);
// Get a pointer to our private key
var privateKey_ptr = _allocate(new Uint8Array(privKey));
// Get a pointer to their public key, the basepoint when you're generating a shared secret
// Get a pointer to their public key, the basepoint when you're
// generating a shared secret
var basepoint_ptr = _allocate(new Uint8Array(pubKey));
// Return value is 0 here too of course
var err = Module._curve25519_donna(sharedKey_ptr, privateKey_ptr, basepoint_ptr);
var err = Module._curve25519_donna(sharedKey_ptr,
privateKey_ptr,
basepoint_ptr);
var res = new Uint8Array(32);
_readBytes(sharedKey_ptr, 32, res);
return Promise.resolve(res.buffer);
},
Ed25519Sign: function(privKey, message) {
sign: function(privKey, message) {
// Where to store the result
var signature_ptr = Module._malloc(32);
@ -2971,13 +2974,16 @@ run();
// Get a pointer to the message
var message_ptr = _allocate(new Uint8Array(message));
var err = Module._curve25519_sign(signature_ptr, privateKey_ptr, message_ptr, message.byteLength);
var err = Module._curve25519_sign(signature_ptr,
privateKey_ptr,
message_ptr,
message.byteLength);
var res = new Uint8Array(64);
_readBytes(signature_ptr, 64, res);
return Promise.resolve(res.buffer);
},
Ed25519Verify: function(pubKey, message, sig) {
verify: function(pubKey, message, sig) {
// Get a pointer to their public key
var publicKey_ptr = _allocate(new Uint8Array(pubKey));
@ -2987,12 +2993,17 @@ run();
// Get a pointer to the message
var message_ptr = _allocate(new Uint8Array(message));
var res = Module._curve25519_verify(signature_ptr, publicKey_ptr, message_ptr, message.byteLength);
var res = Module._curve25519_verify(signature_ptr,
publicKey_ptr,
message_ptr,
message.byteLength);
return new Promise(function(resolve, reject) {
if (res !== 0) {
reject(new Error("Invalid signature"));
} else {
resolve();
}
resolve();
});
}
};