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https://github.com/transatoshi-mw/grin-web-wallet.git
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contents of zip
This commit is contained in:
transatoshi
586
scripts/slate_output.js
Executable file
586
scripts/slate_output.js
Executable file
@@ -0,0 +1,586 @@
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// Use strict
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"use strict";
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// Classes
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// Slate output class
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class SlateOutput {
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// Public
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// Constructor
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constructor(serializedSlateOutputOrFeatures, slateOrCommit, proof) {
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// Reset
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this.reset();
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// Check if a binary serialized slate output is provided
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if(serializedSlateOutputOrFeatures instanceof BitReader === true) {
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// Get serialized slate output
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var serializedSlateOutput = serializedSlateOutputOrFeatures;
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// Get slate
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var slate = slateOrCommit;
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// Unserialize the serialized slate output
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this.unserialize(serializedSlateOutput, slate);
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}
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// Otherwise check if a serialized slate output is provided
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else if(Object.isObject(serializedSlateOutputOrFeatures) === true) {
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// Get serialized slate output
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var serializedSlateOutput = serializedSlateOutputOrFeatures;
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// Get slate
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var slate = slateOrCommit;
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// Unserialize the serialized slate output
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this.unserialize(serializedSlateOutput, slate);
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}
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// Otherwise check if arguments are provided
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else if(typeof serializedSlateOutputOrFeatures === "number") {
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// Get features
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var features = serializedSlateOutputOrFeatures;
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// Get Commit
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var commit = slateOrCommit;
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// Set features to provided features
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this.features = features;
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// Set commit to provided commit
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this.commit = commit;
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// Set proof to provided proof
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this.proof = proof;
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// Check if proof failed to be verified
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if(this.verifyProof() === false) {
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// Throw error
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throw "Unsupported output.";
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}
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}
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// Otherwise
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else {
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// Throw error
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throw "Unsupported output.";
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}
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}
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// Serialize
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serialize(slateOrVersion, bitWriter) {
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// Get slate version
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var slateVersion = (slateOrVersion instanceof Slate === true) ? slateOrVersion.getVersion() : slateOrVersion;
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// Check slate's version
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switch((slateVersion instanceof BigNumber === true) ? slateVersion.toFixed() : slateVersion) {
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// Version two and three
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case Slate.VERSION_TWO.toFixed():
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case Slate.VERSION_THREE.toFixed():
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// Return serialized slate output
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return {
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// Features
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"features": SlateOutput.featuresToText(this.getFeatures()),
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// Commit
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"commit": Common.toHexString(this.getCommit()),
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// Proof
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"proof": Common.toHexString(this.getProof())
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};
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// Version Slatepack
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case Slate.VERSION_SLATEPACK:
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// Try
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try {
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// Write commit
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bitWriter.setBytes(this.getCommit());
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// Check if proof is too long
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if(this.getProof()["length"] >= Math.pow(2, SlateOutput.COMPACT_PROOF_LENGTH_LENGTH)) {
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// Throw error
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throw "Proof is too long.";
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}
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// Write proof length
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bitWriter.setBits(this.getProof()["length"], SlateOutput.COMPACT_PROOF_LENGTH_LENGTH);
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// Write proof
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bitWriter.setBytes(this.getProof());
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported output.";
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}
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// Break
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break;
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// Version four
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case Slate.VERSION_FOUR.toFixed():
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// Check if serializing slate output as binary
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if(typeof bitWriter !== "undefined") {
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// Try
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try {
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// Write features
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bitWriter.setBytes([this.getFeatures()]);
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// Write commit
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bitWriter.setBytes(this.getCommit());
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// Write proof length
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bitWriter.setBytes((new BigNumber(this.getProof()["length"])).toBytes(BigNumber.BIG_ENDIAN, Common.BYTES_IN_A_UINT64));
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// Write proof
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bitWriter.setBytes(this.getProof());
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported output.";
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}
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}
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// Otherwise
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else {
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// Create serialized slate output
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var serializedSlateOutput = {
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// Commit
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"c": Common.toHexString(this.getCommit()),
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// Proof
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"p": Common.toHexString(this.getProof())
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};
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// Check if not plain
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if(this.isPlain() === false) {
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// Set serialized slate output's features
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serializedSlateOutput["f"] = this.getFeatures();
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}
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// Return serialized slate output
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return serializedSlateOutput;
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}
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// Break
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break;
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// Default
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default:
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// Throw error
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throw "Unsupported slate version.";
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}
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}
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// Get transaction
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getTransaction() {
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// Return transaction
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return {
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// Features
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"features": SlateOutput.featuresToText(this.getFeatures()),
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// Commit
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"commit": Common.toHexString(this.getCommit()),
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// Proof
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"proof": Common.toHexString(this.getProof())
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};
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}
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// Get features
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getFeatures() {
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// Return features
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return this.features;
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}
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// Get commit
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getCommit() {
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// Return commit
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return this.commit;
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}
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// Get proof
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getProof() {
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// Return proof
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return this.proof;
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}
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// Is plain
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isPlain() {
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// Return if features is plain
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return this.getFeatures() === SlateOutput.PLAIN_FEATURES;
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}
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// Is coinbase
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isCoinbase() {
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// Return if features is coinbase
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return this.getFeatures() === SlateOutput.COINBASE_FEATURES;
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}
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// Get hash
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getHash() {
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// Return hash
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return new Hash([
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// Features
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new Uint8Array([this.getFeatures()]),
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// Commit
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this.getCommit()
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]);
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}
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// Is equal to
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isEqualTo(slateOutput) {
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// Check if features aren't equal
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if(this.getFeatures() !== slateOutput.getFeatures())
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// Return false
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return false;
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// Check if commits aren't equal
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if(Common.arraysAreEqual(this.getCommit(), slateOutput.getCommit()) === false)
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// Return false
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return false;
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// Check if proofs aren't equal
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if(Common.arraysAreEqual(this.getProof(), slateOutput.getProof()) === false)
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// Return false
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return false;
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// Return true
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return true;
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}
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// Private
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// Reset
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reset() {
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// Set features to plain features
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this.features = SlateOutput.PLAIN_FEATURES;
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}
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// Unserialize
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unserialize(serializedSlateOutput, slate) {
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// Check slate's version
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switch((slate.getVersion() instanceof BigNumber === true) ? slate.getVersion().toFixed() : slate.getVersion()) {
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// Version two and three
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case Slate.VERSION_TWO.toFixed():
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case Slate.VERSION_THREE.toFixed():
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// Check if serialized slate output's features isn't supported
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if("features" in serializedSlateOutput === false || SlateOutput.textToFeatures(serializedSlateOutput["features"]) === SlateOutput.UNSUPPORTED_FEATURES || SlateOutput.textToFeatures(serializedSlateOutput["features"]) === SlateOutput.COINBASE_FEATURES) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set features to serialized slate output's features
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this.features = SlateOutput.textToFeatures(serializedSlateOutput["features"]);
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// Check if serialized slate output's commit isn't supported
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if("commit" in serializedSlateOutput === false || Common.isHexString(serializedSlateOutput["commit"]) === false || Common.hexStringLength(serializedSlateOutput["commit"]) !== Crypto.COMMIT_LENGTH || Secp256k1Zkp.isValidCommit(Common.fromHexString(serializedSlateOutput["commit"])) !== true) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set commit to serialized slate output's commit
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this.commit = Common.fromHexString(serializedSlateOutput["commit"]);
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// Check if serialized slate output's proof isn't supported
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if("proof" in serializedSlateOutput === false || Common.isHexString(serializedSlateOutput["proof"]) === false || Common.hexStringLength(serializedSlateOutput["proof"]) !== Crypto.PROOF_LENGTH) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set proof to serialized slate output's proof
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this.proof = Common.fromHexString(serializedSlateOutput["proof"]);
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// Break
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break;
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// Version Slatepack
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case Slate.VERSION_SLATEPACK:
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// Get bit reader
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var bitReader = serializedSlateOutput;
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// Try
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try {
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// Set commit to serialized slate output's commit
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this.commit = bitReader.getBytes(Crypto.COMMIT_LENGTH);
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// Check if commit is invalid
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if(Secp256k1Zkp.isValidCommit(this.getCommit()) !== true) {
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// Throw error
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throw "Unsupported output.";
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}
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// Get serialized slate output's proof length
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var proofLength = bitReader.getBits(SlateOutput.COMPACT_PROOF_LENGTH_LENGTH);
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// Check if serialized slate output's proof length isn't supported
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if(proofLength !== Crypto.PROOF_LENGTH) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set proof to serialized slate output's proof
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this.proof = bitReader.getBytes(proofLength);
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported output.";
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}
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// Break
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break;
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// Version four
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case Slate.VERSION_FOUR.toFixed():
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// Check if serialized slate output is binary
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if(serializedSlateOutput instanceof BitReader === true) {
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// Get bit reader
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var bitReader = serializedSlateOutput;
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// Try
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try {
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// Set features to serialized slate output's features
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this.features = bitReader.getBytes(1)[0];
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// Check if serialized slate output's features isn't supported
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if(this.getFeatures() !== SlateOutput.PLAIN_FEATURES) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set commit to serialized slate output's commit
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this.commit = bitReader.getBytes(Crypto.COMMIT_LENGTH);
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// Check if serialized slate output's commit isn't supported
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if(Secp256k1Zkp.isValidCommit(this.getCommit()) !== true) {
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// Throw error
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throw "Unsupported output.";
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}
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// Get serialized slate output's proof length
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var proofLength = new BigNumber(Common.HEX_PREFIX + Common.toHexString(bitReader.getBytes(Common.BYTES_IN_A_UINT64)));
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// Check if serialized slate output's proof length is invalid
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if(proofLength.isEqualTo(Crypto.PROOF_LENGTH) === false) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set proof to serialized slate output's proof
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this.proof = bitReader.getBytes(proofLength.toNumber());
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}
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// Catch errors
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catch(error) {
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// Throw error
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throw "Unsupported output.";
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}
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}
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// Otherwise
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else {
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// Check if serialized slate output's features isn't supported
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if("f" in serializedSlateOutput === true && ((Common.isNumberString(serializedSlateOutput["f"]) === false && serializedSlateOutput["f"] instanceof BigNumber === false) || (new BigNumber(serializedSlateOutput["f"])).isEqualTo(SlateOutput.PLAIN_FEATURES) === false)) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set features to serialized slate output's features
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this.features = ("f" in serializedSlateOutput === true) ? (new BigNumber(serializedSlateOutput["f"])).toNumber() : SlateOutput.PLAIN_FEATURES;
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// Check if serialized slate output's commit isn't supported
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if("c" in serializedSlateOutput === false || Common.isHexString(serializedSlateOutput["c"]) === false || Common.hexStringLength(serializedSlateOutput["c"]) !== Crypto.COMMIT_LENGTH || Secp256k1Zkp.isValidCommit(Common.fromHexString(serializedSlateOutput["c"])) !== true) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set commit to serialized slate output's commit
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this.commit = Common.fromHexString(serializedSlateOutput["c"]);
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// Check if serialized slate output's proof isn't supported
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if("p" in serializedSlateOutput === false || Common.isHexString(serializedSlateOutput["p"]) === false || Common.hexStringLength(serializedSlateOutput["p"]) !== Crypto.PROOF_LENGTH) {
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// Throw error
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throw "Unsupported output.";
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}
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// Set proof to serialized slate output's proof
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this.proof = Common.fromHexString(serializedSlateOutput["p"]);
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}
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// Break
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break;
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// Default
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default:
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// Throw error
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throw "Unsupported output.";
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}
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// Check if proof failed to be verified
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if(this.verifyProof() === false) {
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// Throw error
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throw "Unsupported output.";
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}
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}
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// Verify proof
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verifyProof() {
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// Check if proof verifies the commit
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return Secp256k1Zkp.verifyBulletproof(this.getProof(), this.getCommit(), new Uint8Array([])) === true;
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}
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// Features to text
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static featuresToText(features) {
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// Check features
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switch(features) {
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// Plain features
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case SlateOutput.PLAIN_FEATURES:
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// Return plain text
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return "Plain";
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// Coinbase features
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case SlateOutput.COINBASE_FEATURES:
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// Return coinbase text
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return "Coinbase";
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// Default
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default:
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// Return unsupported features
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return SlateOutput.UNSUPPORTED_FEATURES;
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}
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}
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// Text to feature
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static textToFeatures(text) {
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// Check text
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switch(text) {
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// Plain text
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case "Plain":
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// Return plain features
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return SlateOutput.PLAIN_FEATURES;
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// Coinbase text
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case "Coinbase":
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// Return coinbase features
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return SlateOutput.COINBASE_FEATURES;
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// Default
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default:
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// Return unsupported features
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return SlateOutput.UNSUPPORTED_FEATURES;
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}
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}
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// Plain features
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static get PLAIN_FEATURES() {
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// Return plain features
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return 0;
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}
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// Coinbase features
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static get COINBASE_FEATURES() {
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// Return coinbase features
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return SlateOutput.PLAIN_FEATURES + 1;
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}
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// Unsupported features
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static get UNSUPPORTED_FEATURES() {
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// Return unsupported features
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return SlateOutput.COINBASE_FEATURES + 1;
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}
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// Compact proof length length
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static get COMPACT_PROOF_LENGTH_LENGTH() {
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// Return compact proof length length
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return 10;
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}
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}
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|
||||
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// Main function
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// Set global object's slate output
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||||
globalThis["SlateOutput"] = SlateOutput;
|
||||
Reference in New Issue
Block a user