@transmute/bbs-bls12381-signature-2020
Version:
Transmute implementation of https://w3id.org/security/suites/bls12381-2020
1,938 lines • 64.8 kB
JavaScript
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
var jsonld = _interopDefault(require('@transmute/jsonld'));
var bls12381KeyPair = require('@transmute/bls12381-key-pair');
var random = require('@stablelib/random');
var bbsSignatures = require('@mattrglobal/bbs-signatures');
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
function _extends() {
_extends = Object.assign || function (target) {
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var source = arguments[i];
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return target;
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return _extends.apply(this, arguments);
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function createCommonjsModule(fn, module) {
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}
var runtime_1 = createCommonjsModule(function (module) {
/**
* Copyright (c) 2014-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
var runtime = (function (exports) {
var Op = Object.prototype;
var hasOwn = Op.hasOwnProperty;
var undefined$1; // More compressible than void 0.
var $Symbol = typeof Symbol === "function" ? Symbol : {};
var iteratorSymbol = $Symbol.iterator || "@@iterator";
var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
function define(obj, key, value) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
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return obj[key];
}
try {
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define({}, "");
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define = function(obj, key, value) {
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function wrap(innerFn, outerFn, self, tryLocsList) {
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var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
var generator = Object.create(protoGenerator.prototype);
var context = new Context(tryLocsList || []);
// The ._invoke method unifies the implementations of the .next,
// .throw, and .return methods.
generator._invoke = makeInvokeMethod(innerFn, self, context);
return generator;
}
exports.wrap = wrap;
// Try/catch helper to minimize deoptimizations. Returns a completion
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// have been (and was previously) designed to take a closure to be
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// in every case, so we don't have to touch the arguments object. The
// only additional allocation required is the completion record, which
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function tryCatch(fn, obj, arg) {
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// Dummy constructor functions that we use as the .constructor and
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function Generator() {}
function GeneratorFunction() {}
function GeneratorFunctionPrototype() {}
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var IteratorPrototype = {};
IteratorPrototype[iteratorSymbol] = function () {
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var getProto = Object.getPrototypeOf;
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var Gp = GeneratorFunctionPrototype.prototype =
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GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
GeneratorFunctionPrototype.constructor = GeneratorFunction;
GeneratorFunction.displayName = define(
GeneratorFunctionPrototype,
toStringTagSymbol,
"GeneratorFunction"
);
// Helper for defining the .next, .throw, and .return methods of the
// Iterator interface in terms of a single ._invoke method.
function defineIteratorMethods(prototype) {
["next", "throw", "return"].forEach(function(method) {
define(prototype, method, function(arg) {
return this._invoke(method, arg);
});
});
}
exports.isGeneratorFunction = function(genFun) {
var ctor = typeof genFun === "function" && genFun.constructor;
return ctor
? ctor === GeneratorFunction ||
// For the native GeneratorFunction constructor, the best we can
// do is to check its .name property.
(ctor.displayName || ctor.name) === "GeneratorFunction"
: false;
};
exports.mark = function(genFun) {
if (Object.setPrototypeOf) {
Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
} else {
genFun.__proto__ = GeneratorFunctionPrototype;
define(genFun, toStringTagSymbol, "GeneratorFunction");
}
genFun.prototype = Object.create(Gp);
return genFun;
};
// Within the body of any async function, `await x` is transformed to
// `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
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// meant to be awaited.
exports.awrap = function(arg) {
return { __await: arg };
};
function AsyncIterator(generator, PromiseImpl) {
function invoke(method, arg, resolve, reject) {
var record = tryCatch(generator[method], generator, arg);
if (record.type === "throw") {
reject(record.arg);
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var result = record.arg;
var value = result.value;
if (value &&
typeof value === "object" &&
hasOwn.call(value, "__await")) {
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invoke("next", value, resolve, reject);
}, function(err) {
invoke("throw", err, resolve, reject);
});
}
return PromiseImpl.resolve(value).then(function(unwrapped) {
// When a yielded Promise is resolved, its final value becomes
// the .value of the Promise<{value,done}> result for the
// current iteration.
result.value = unwrapped;
resolve(result);
}, function(error) {
// If a rejected Promise was yielded, throw the rejection back
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return invoke("throw", error, resolve, reject);
});
}
}
var previousPromise;
function enqueue(method, arg) {
function callInvokeWithMethodAndArg() {
return new PromiseImpl(function(resolve, reject) {
invoke(method, arg, resolve, reject);
});
}
return previousPromise =
// If enqueue has been called before, then we want to wait until
// all previous Promises have been resolved before calling invoke,
// so that results are always delivered in the correct order. If
// enqueue has not been called before, then it is important to
// call invoke immediately, without waiting on a callback to fire,
// so that the async generator function has the opportunity to do
// any necessary setup in a predictable way. This predictability
// is why the Promise constructor synchronously invokes its
// executor callback, and why async functions synchronously
// execute code before the first await. Since we implement simple
// async functions in terms of async generators, it is especially
// important to get this right, even though it requires care.
previousPromise ? previousPromise.then(
callInvokeWithMethodAndArg,
// Avoid propagating failures to Promises returned by later
// invocations of the iterator.
callInvokeWithMethodAndArg
) : callInvokeWithMethodAndArg();
}
// Define the unified helper method that is used to implement .next,
// .throw, and .return (see defineIteratorMethods).
this._invoke = enqueue;
}
defineIteratorMethods(AsyncIterator.prototype);
AsyncIterator.prototype[asyncIteratorSymbol] = function () {
return this;
};
exports.AsyncIterator = AsyncIterator;
// Note that simple async functions are implemented on top of
// AsyncIterator objects; they just return a Promise for the value of
// the final result produced by the iterator.
exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {
if (PromiseImpl === void 0) PromiseImpl = Promise;
var iter = new AsyncIterator(
wrap(innerFn, outerFn, self, tryLocsList),
PromiseImpl
);
return exports.isGeneratorFunction(outerFn)
? iter // If outerFn is a generator, return the full iterator.
: iter.next().then(function(result) {
return result.done ? result.value : iter.next();
});
};
function makeInvokeMethod(innerFn, self, context) {
var state = GenStateSuspendedStart;
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throw new Error("Generator is already running");
}
if (state === GenStateCompleted) {
if (method === "throw") {
throw arg;
}
// Be forgiving, per 25.3.3.3.3 of the spec:
// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
return doneResult();
}
context.method = method;
context.arg = arg;
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return delegateResult;
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context.sent = context._sent = context.arg;
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state = GenStateCompleted;
throw context.arg;
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context.dispatchException(context.arg);
} else if (context.method === "return") {
context.abrupt("return", context.arg);
}
state = GenStateExecuting;
var record = tryCatch(innerFn, self, context);
if (record.type === "normal") {
// If an exception is thrown from innerFn, we leave state ===
// GenStateExecuting and loop back for another invocation.
state = context.done
? GenStateCompleted
: GenStateSuspendedYield;
if (record.arg === ContinueSentinel) {
continue;
}
return {
value: record.arg,
done: context.done
};
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state = GenStateCompleted;
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context.method = "throw";
context.arg = record.arg;
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}
};
}
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// result, either by returning a { value, done } result from the
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function maybeInvokeDelegate(delegate, context) {
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context.delegate = null;
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// If the delegate iterator has a return method, give it a
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context.method = "return";
context.arg = undefined$1;
maybeInvokeDelegate(delegate, context);
if (context.method === "throw") {
// If maybeInvokeDelegate(context) changed context.method from
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return ContinueSentinel;
}
}
context.method = "throw";
context.arg = new TypeError(
"The iterator does not provide a 'throw' method");
}
return ContinueSentinel;
}
var record = tryCatch(method, delegate.iterator, context.arg);
if (record.type === "throw") {
context.method = "throw";
context.arg = record.arg;
context.delegate = null;
return ContinueSentinel;
}
var info = record.arg;
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context.method = "throw";
context.arg = new TypeError("iterator result is not an object");
context.delegate = null;
return ContinueSentinel;
}
if (info.done) {
// Assign the result of the finished delegate to the temporary
// variable specified by delegate.resultName (see delegateYield).
context[delegate.resultName] = info.value;
// Resume execution at the desired location (see delegateYield).
context.next = delegate.nextLoc;
// If context.method was "throw" but the delegate handled the
// exception, let the outer generator proceed normally. If
// context.method was "next", forget context.arg since it has been
// "consumed" by the delegate iterator. If context.method was
// "return", allow the original .return call to continue in the
// outer generator.
if (context.method !== "return") {
context.method = "next";
context.arg = undefined$1;
}
} else {
// Re-yield the result returned by the delegate method.
return info;
}
// The delegate iterator is finished, so forget it and continue with
// the outer generator.
context.delegate = null;
return ContinueSentinel;
}
// Define Generator.prototype.{next,throw,return} in terms of the
// unified ._invoke helper method.
defineIteratorMethods(Gp);
define(Gp, toStringTagSymbol, "Generator");
// A Generator should always return itself as the iterator object when the
// @@iterator function is called on it. Some browsers' implementations of the
// iterator prototype chain incorrectly implement this, causing the Generator
// object to not be returned from this call. This ensures that doesn't happen.
// See https://github.com/facebook/regenerator/issues/274 for more details.
Gp[iteratorSymbol] = function() {
return this;
};
Gp.toString = function() {
return "[object Generator]";
};
function pushTryEntry(locs) {
var entry = { tryLoc: locs[0] };
if (1 in locs) {
entry.catchLoc = locs[1];
}
if (2 in locs) {
entry.finallyLoc = locs[2];
entry.afterLoc = locs[3];
}
this.tryEntries.push(entry);
}
function resetTryEntry(entry) {
var record = entry.completion || {};
record.type = "normal";
delete record.arg;
entry.completion = record;
}
function Context(tryLocsList) {
// The root entry object (effectively a try statement without a catch
// or a finally block) gives us a place to store values thrown from
// locations where there is no enclosing try statement.
this.tryEntries = [{ tryLoc: "root" }];
tryLocsList.forEach(pushTryEntry, this);
this.reset(true);
}
exports.keys = function(object) {
var keys = [];
for (var key in object) {
keys.push(key);
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keys.reverse();
// Rather than returning an object with a next method, we keep
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return function next() {
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var key = keys.pop();
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next.value = key;
next.done = false;
return next;
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}
// To avoid creating an additional object, we just hang the .value
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next.done = true;
return next;
};
};
function values(iterable) {
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if (iteratorMethod) {
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if (!isNaN(iterable.length)) {
var i = -1, next = function next() {
while (++i < iterable.length) {
if (hasOwn.call(iterable, i)) {
next.value = iterable[i];
next.done = false;
return next;
}
}
next.value = undefined$1;
next.done = true;
return next;
};
return next.next = next;
}
}
// Return an iterator with no values.
return { next: doneResult };
}
exports.values = values;
function doneResult() {
return { value: undefined$1, done: true };
}
Context.prototype = {
constructor: Context,
reset: function(skipTempReset) {
this.prev = 0;
this.next = 0;
// Resetting context._sent for legacy support of Babel's
// function.sent implementation.
this.sent = this._sent = undefined$1;
this.done = false;
this.delegate = null;
this.method = "next";
this.arg = undefined$1;
this.tryEntries.forEach(resetTryEntry);
if (!skipTempReset) {
for (var name in this) {
// Not sure about the optimal order of these conditions:
if (name.charAt(0) === "t" &&
hasOwn.call(this, name) &&
!isNaN(+name.slice(1))) {
this[name] = undefined$1;
}
}
}
},
stop: function() {
this.done = true;
var rootEntry = this.tryEntries[0];
var rootRecord = rootEntry.completion;
if (rootRecord.type === "throw") {
throw rootRecord.arg;
}
return this.rval;
},
dispatchException: function(exception) {
if (this.done) {
throw exception;
}
var context = this;
function handle(loc, caught) {
record.type = "throw";
record.arg = exception;
context.next = loc;
if (caught) {
// If the dispatched exception was caught by a catch block,
// then let that catch block handle the exception normally.
context.method = "next";
context.arg = undefined$1;
}
return !! caught;
}
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
var record = entry.completion;
if (entry.tryLoc === "root") {
// Exception thrown outside of any try block that could handle
// it, so set the completion value of the entire function to
// throw the exception.
return handle("end");
}
if (entry.tryLoc <= this.prev) {
var hasCatch = hasOwn.call(entry, "catchLoc");
var hasFinally = hasOwn.call(entry, "finallyLoc");
if (hasCatch && hasFinally) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
} else if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else if (hasCatch) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
}
} else if (hasFinally) {
if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else {
throw new Error("try statement without catch or finally");
}
}
}
},
abrupt: function(type, arg) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.tryLoc <= this.prev &&
hasOwn.call(entry, "finallyLoc") &&
this.prev < entry.finallyLoc) {
var finallyEntry = entry;
break;
}
}
if (finallyEntry &&
(type === "break" ||
type === "continue") &&
finallyEntry.tryLoc <= arg &&
arg <= finallyEntry.finallyLoc) {
// Ignore the finally entry if control is not jumping to a
// location outside the try/catch block.
finallyEntry = null;
}
var record = finallyEntry ? finallyEntry.completion : {};
record.type = type;
record.arg = arg;
if (finallyEntry) {
this.method = "next";
this.next = finallyEntry.finallyLoc;
return ContinueSentinel;
}
return this.complete(record);
},
complete: function(record, afterLoc) {
if (record.type === "throw") {
throw record.arg;
}
if (record.type === "break" ||
record.type === "continue") {
this.next = record.arg;
} else if (record.type === "return") {
this.rval = this.arg = record.arg;
this.method = "return";
this.next = "end";
} else if (record.type === "normal" && afterLoc) {
this.next = afterLoc;
}
return ContinueSentinel;
},
finish: function(finallyLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.finallyLoc === finallyLoc) {
this.complete(entry.completion, entry.afterLoc);
resetTryEntry(entry);
return ContinueSentinel;
}
}
},
"catch": function(tryLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
if (entry.tryLoc === tryLoc) {
var record = entry.completion;
if (record.type === "throw") {
var thrown = record.arg;
resetTryEntry(entry);
}
return thrown;
}
}
// The context.catch method must only be called with a location
// argument that corresponds to a known catch block.
throw new Error("illegal catch attempt");
},
delegateYield: function(iterable, resultName, nextLoc) {
this.delegate = {
iterator: values(iterable),
resultName: resultName,
nextLoc: nextLoc
};
if (this.method === "next") {
// Deliberately forget the last sent value so that we don't
// accidentally pass it on to the delegate.
this.arg = undefined$1;
}
return ContinueSentinel;
}
};
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return exports;
}(
// If this script is executing as a CommonJS module, use module.exports
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module.exports
));
try {
regeneratorRuntime = runtime;
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// This module should not be running in strict mode, so the above
// assignment should always work unless something is misconfigured. Just
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// strict mode using a global Function call. This could conceivably fail
// if a Content Security Policy forbids using Function, but in that case
// the proper solution is to fix the accidental strict mode problem. If
// you've misconfigured your bundler to force strict mode and applied a
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Function("r", "regeneratorRuntime = r")(runtime);
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var documentLoader, expansionMap;
return runtime_1.wrap(function _callee3$(_context3) {
while (1) {
switch (_context3.prev = _context3.next) {
case 0:
documentLoader = _ref5.documentLoader, expansionMap = _ref5.expansionMap;
// `jws`,`signatureValue`,`proofValue` must not be included in the proof
// options
proof = _extends({}, proof);
delete proof.jws;
return _context3.abrupt("return", this.canonize(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap,
skipExpansion: false
}));
case 4:
case "end":
return _context3.stop();
}
}
}, _callee3, this);
}));
function canonizeProof(_x4, _x5) {
return _canonizeProof.apply(this, arguments);
}
return canonizeProof;
}();
_proto.createVerifyProofData = /*#__PURE__*/function () {
var _createVerifyProofData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee4(proof, _ref6) {
var documentLoader, expansionMap, c14nProofOptions;
return runtime_1.wrap(function _callee4$(_context4) {
while (1) {
switch (_context4.prev = _context4.next) {
case 0:
documentLoader = _ref6.documentLoader, expansionMap = _ref6.expansionMap;
_context4.next = 3;
return this.canonizeProof(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
c14nProofOptions = _context4.sent;
return _context4.abrupt("return", c14nProofOptions.split("\n").filter(function (_) {
return _.length > 0;
}));
case 5:
case "end":
return _context4.stop();
}
}
}, _callee4, this);
}));
function createVerifyProofData(_x6, _x7) {
return _createVerifyProofData.apply(this, arguments);
}
return createVerifyProofData;
}();
_proto.createVerifyDocumentData = /*#__PURE__*/function () {
var _createVerifyDocumentData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee5(document, _ref7) {
var documentLoader, expansionMap, c14nDocument;
return runtime_1.wrap(function _callee5$(_context5) {
while (1) {
switch (_context5.prev = _context5.next) {
case 0:
documentLoader = _ref7.documentLoader, expansionMap = _ref7.expansionMap;
_context5.next = 3;
return this.canonize(document, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
c14nDocument = _context5.sent;
return _context5.abrupt("return", c14nDocument.split("\n").filter(function (_) {
return _.length > 0;
}));
case 5:
case "end":
return _context5.stop();
}
}
}, _callee5, this);
}));
function createVerifyDocumentData(_x8, _x9) {
return _createVerifyDocumentData.apply(this, arguments);
}
return createVerifyDocumentData;
}();
_proto.createVerifyData = /*#__PURE__*/function () {
var _createVerifyData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee6(options) {
var proof, document, documentLoader, expansionMap, proofStatements, documentStatements;
return runtime_1.wrap(function _callee6$(_context6) {
while (1) {
switch (_context6.prev = _context6.next) {
case 0:
proof = options.proof, document = options.document, documentLoader = options.documentLoader, expansionMap = options.expansionMap;
_context6.next = 3;
return this.createVerifyProofData(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
proofStatements = _context6.sent;
_context6.next = 6;
return this.createVerifyDocumentData(document, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 6:
documentStatements = _context6.sent;
return _context6.abrupt("return", proofStatements.concat(documentStatements));
case 8:
case "end":
return _context6.stop();
}
}
}, _callee6, this);
}));
function createVerifyData(_x10) {
return _createVerifyData.apply(this, arguments);
}
return createVerifyData;
}();
_proto.createProof = /*#__PURE__*/function () {
var _createProof = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee7(_ref8) {
var _this$key, _this$key2;
var document, purpose, documentLoader, expansionMap, compactProof, context, proof, date, verifyData, signer, proofValue;
return runtime_1.wrap(function _callee7$(_context7) {
while (1) {
switch (_context7.prev = _context7.next) {
case 0:
document = _ref8.document, purpose = _ref8.purpose, documentLoader = _ref8.documentLoader, expansionMap = _ref8.expansionMap, compactProof = _ref8.compactProof;
context = document["@context"];
proof = {
"@context": context
};
proof.type = BbsBlsSignature2020.type;
if (this.date !== undefined) {
proof.created = this.date;
}
if (!proof.created) {
date = new Date().toISOString();
proof.created = date.substr(0, date.length - 5) + "Z";
}
if (((_this$key = this.key) == null ? void 0 : _this$key.id) !== undefined) {
proof.verificationMethod = this.key.id;
}
_context7.next = 9;
return purpose.update(proof, {
document: document,
suite: this,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 9:
proof = _context7.sent;
_context7.next = 12;
return this.createVerifyData({
document: document,
proof: proof,
documentLoader: documentLoader,
expansionMap: expansionMap,
compactProof: compactProof
});
case 12:
verifyData = _context7.sent.map(function (item) {
return new Uint8Array(Buffer.from(item));
});
_context7.next = 15;
return (_this$key2 = this.key) == null ? void 0 : _this$key2.signer();
case 15:
signer = _context7.sent;
_context7.next = 18;
return signer.sign({
data: verifyData
});
case 18:
proofValue = _context7.sent;
proof.proofValue = Buffer.from(proofValue).toString("base64");
return _context7.abrupt("return", proof);
case 21:
case "end":
return _context7.stop();
}
}
}, _callee7, this);
}));
function createProof(_x11) {
return _createProof.apply(this, arguments);
}
return createProof;
}();
_proto.getVerificationMethod = /*#__PURE__*/function () {
var _getVerificationMethod = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee8(_ref9) {
var proof, documentLoader, verificationMethod, result;
return runtime_1.wrap(function _callee8$(_context8) {
while (1) {
switch (_context8.prev = _context8.next) {
case 0:
proof = _ref9.proof, documentLoader = _ref9.documentLoader;
verificationMethod = proof.verificationMethod;
if (typeof verificationMethod === "object") {
verificationMethod = verificationMethod.id;
}
if (verificationMethod) {
_context8.next = 5;
break;
}
throw new Error('No "verificationMethod" found in proof.');
case 5:
_context8.next = 7;
return jsonld.frame(verificationMethod, {
"@context": suiteContexts,
"@embed": "@always",
id: verificationMethod
}, {
documentLoader: documentLoader,
compactToRelative: false,
expandContext: suiteContexts
});
case 7:
result = _context8.sent;
if (result) {
_context8.next = 10;
break;
}
throw new Error("Verification method " + verificationMethod + " not found.");
case 10:
if (!(result.revoked !== undefined)) {
_context8.next = 12;
break;
}
throw new Error("The verification method has been revoked.");
case 12:
return _context8.abrupt("return", result);
case 13:
case "end":
return _context8.stop();
}
}
}, _callee8);
}));
function getVerificationMethod(_x12) {
return _getVerificationMethod.apply(this, arguments);
}
return getVerificationMethod;
}();
_proto.verifySignature = /*#__PURE__*/function () {
var _verifySignature = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee9(options) {
var verifyData, proof, verificationMethod, key, verifier, signature;
return runtime_1.wrap(function _callee9$(_context9) {
while (1) {
switch (_context9.prev = _context9.next) {
case 0:
verifyData = options.verifyData, proof = options.proof, verificationMethod = options.verificationMethod;
_context9.next = 3;
return bls12381KeyPair.Bls12381G2KeyPair.from(verificationMethod);
case 3:
key = _context9.sent;
verifier = key.verifier();
signature = new Uint8Array(Buffer.from(proof.proofValue, "base64"));
_context9.next = 8;
return verifier.verify({
data: verifyData,
signature: signature
});
case 8:
return _context9.abrupt("return", _context9.sent);
case 9:
case "end":
return _context9.stop();
}
}
}, _callee9);
}));
function verifySignature(_x13) {
return _verifySignature.apply(this, arguments);
}
return verifySignature;
}();
_proto.verifyProof = /*#__PURE__*/function () {
var _verifyProof = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee10(options) {
var proof, document, documentLoader, expansionMap, purpose, proofValue, verifyData, verificationMethod, verified, _yield$purpose$valida, valid, error;
return runtime_1.wrap(function _callee10$(_context10) {
while (1) {
switch (_context10.prev = _context10.next) {
case 0:
proof = options.proof, document = options.document, documentLoader = options.documentLoader, expansionMap = options.expansionMap, purpose = options.purpose;
proofValue = proof.proofValue;
delete proof.proofValue;
_context10.prev = 3;
_context10.next = 6;
return this.createVerifyData({
document: document,
proof: proof,
documentLoader: documentLoader,
expansionMap: expansionMap,
compactProof: false
});
case 6:
verifyData = _context10.sent.map(function (item) {
return new Uint8Array(Buffer.from(item));
});
_context10.next = 9;
return this.getVerificationMethod({
proof: proof,
document: document,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 9:
verificationMethod = _context10.sent;
_context10.next = 12;
return this.verifySignature({
verifyData: verifyData,
verificationMethod: verificationMethod,
document: document,
proof: _extends({}, proof, {
proofValue: proofValue
}),
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 12:
verified = _context10.sent;
if (verified) {
_context10.next = 15;
break;
}
throw new Error("Invalid signature.");
case 15:
_context10.next = 17;
return purpose.validate(proof, {
document: document,
suite: this,
verificationMethod: verificationMethod,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 17:
_yield$purpose$valida = _context10.sent;
valid = _yield$purpose$valida.valid;
error = _yield$purpose$valida.error;
if (valid) {
_context10.next = 22;
break;
}
throw error;
case 22:
return _context10.abrupt("return", {
verified: true
});
case 25:
_context10.prev = 25;
_context10.t0 = _context10["catch"](3);
return _context10.abrupt("return", {
verified: false,
error: _context10.t0
});
case 28:
case "end":
return _context10.stop();
}
}
}, _callee10, this, [[3, 25]]);
}));
function verifyProof(_x14) {
return _verifyProof.apply(this, arguments);
}
return verifyProof;
}();
return BbsBlsSignature2020;
}();
BbsBlsSignature2020.type = "BbsBlsSignature2020";
var suiteContexts$1 = ["https://w3id.org/security/suites/jws-2020/v1", "https://w3id.org/security/suites/bls12381-2020/v1"];
var BbsBlsSignatureProof2020 = /*#__PURE__*/function () {
function BbsBlsSignatureProof2020() {}
var _proto = BbsBlsSignatureProof2020.prototype;
_proto.ensureSuiteContext = function ensureSuiteContext(_ref) {
var document = _ref.document;
var contextUrl = "https://w3id.org/security/suites/bls12381-2020/v1";
if (document["@context"] === contextUrl || Array.isArray(document["@context"]) && document["@context"].includes(contextUrl)) {
// document already includes the required context
return;
}
throw new TypeError("The document to be signed must contain this suite's @context, " + ("\"" + contextUrl + "\"."));
};
_proto.getVerificationMethod = /*#__PURE__*/function () {
var _getVerificationMethod = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee(_ref2) {
var proof, documentLoader, verificationMethod, result;
return runtime_1.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
proof = _ref2.proof, documentLoader = _ref2.documentLoader;
verificationMethod = proof.verificationMethod;
if (typeof verificationMethod === "object") {
verificationMethod = verificationMethod.id;
}
if (verificationMethod) {
_context.next = 5;
break;
}
throw new Error('No "verificationMethod" found in proof.');
case 5:
_context.next = 7;
return jsonld.frame(verificationMethod, {
"@context": suiteContexts$1,
"@embed": "@always",
id: verificationMethod
}, {
documentLoader: documentLoader,
compactToRelative: false,
expandContext: suiteContexts$1
});
case 7:
result = _context.sent;
if (result) {
_context.next = 10;
break;
}
throw new Error("Verification method " + verificationMethod + " not found.");
case 10:
if (!(result.revoked !== undefined)) {
_context.next = 12;
break;
}
throw new Error("The verification method has been revoked.");
case 12:
return _context.abrupt("return", result);
case 13:
case "end":
return _context.stop();
}
}
}, _callee);
}));
function getVerificationMethod(_x) {
return _getVerificationMethod.apply(this, arguments);
}
return getVerificationMethod;
}();
_proto.deriveProof = /*#__PURE__*/function () {
var _deriveProof = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee2(options) {
var document, proof, revealDocument, documentLoader, expansionMap, nonce, signature, suite, derivedProof, documentStatements, proofStatements, transformedInputDocumentStatements, compactInputProofDocument, revealDocumentResult, revealDocumentStatements, numberOfProofStatements, proofRevealIndicies, documentRevealIndicies, revealIndicies, allInputStatements, verificationMethod, key, outputProof, compactedRevealedDocument;
return runtime_1.wrap(function _callee2$(_context2) {
while (1) {
switch (_context2.prev = _context2.next) {
case 0:
document = options.document, proof = options.proof, revealDocument = options.revealDocument, documentLoader = options.documentLoader, expansionMap = options.expansionMap;
nonce = options.nonce;
if (!(proof.type !== "BbsBlsSignature2020")) {
_context2.next = 4;
break;
}
throw new TypeError("proof type unacceptable, \n expected \"BbsBlsSignature2020\",\n received " + proof.type);
case 4:
signature = Uint8Array.from(Buffer.from(proof.proofValue, "base64"));
delete proof.proofValue;
suite = new BbsBlsSignature2020();
derivedProof = {
"@context": document["@context"],
type: BbsBlsSignatureProof2020.type
};
_context2.next = 10;
return suite.createVerifyDocumentData(document, {
documentLoader: documentLoader,
expansionMap: expansionMap,
compactProof: true
});
case 10:
documentStatements = _context2.sent;
_context2.next = 13;
return suite.createVerifyProofData(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap,
compactProof: true
});
case 13:
proofStatements = _context2.sent;
transformedInputDocumentStatements = documentStatements.map(function (element) {
return element.replace(/(_:c14n[0-9]+)/g, "<urn:bnid:$1>");
});
_context2.next = 17;
return jsonld.fromRDF(transformedInputDocumentStatements.join("\n"));
case 17:
compactInputProofDocument = _context2.sent;
_context2.next = 20;
return jsonld.frame(compactInputProofDocument, revealDocument, {
documentLoader: documentLoader
});
case 20:
revealDocumentResult = _context2.sent;
_context2.next = 23;
return suite.createVerifyDocumentData(revealDocumentResult, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 23:
revealDocumentStatements = _context2.sent;
numberOfProofStatements = proofStatements.length;
proofRevealIndicies = Array.from(Array(numberOfProofStatements).keys());
documentRevealIndicies = revealDocumentStatements.map(function (key) {
return transformedInputDocumentStatements.indexOf(key) + numberOfProofStatements;
});
if (!(documentRevealIndicies.length !== revealDocumentStatements.length)) {
_context2.next = 29;
break;
}
throw new Error("Some statements in the reveal document not found in original proof");
case 29:
revealIndicies = proofRevealIndicies.concat(documentRevealIndicies); // Create a nonce if one is not supplied
if (nonce) {
_context2.next = 34;
break;
}
_context2.next = 33;
return random.randomBytes(50);
case 33:
nonce = _context2.sent;
case 34:
derivedProof.nonce = Buffer.from(nonce).toString("base64");
allInputStatements = proofStatements.concat(documentStatements).map(function (item) {
return new Uint8Array(Buffer.from(item));
}); // Fetch the verification method
_context2.next = 38;
return this.getVerificationMethod({
proof: proof,
document: document,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 38:
verificationMethod = _context2.sent;
_context2.next = 41;
return bls12381KeyPair.Bls12381G2KeyPair.from(verificationMethod);
case 41:
key = _context2.sent;
_context2.next = 44;
return bbsSignatures.blsCreateProof({
messages: allInputStatements,
revealed: revealIndicies,
signature: new Uint8Array(signature),
nonce: nonce,
publicKey: new Uint8Array(key.publicKey)
});
case 44:
outputProof = _context2.sent;
// Set the proof value on the derived proof
derivedProof.proofValue = Buffer.from(outputProof).toString("base64"); // Set the relevant proof elements on the derived proof from the input proof
derivedProof.verificationMethod = proof.verificationMethod;
derivedProof.proofPurpose = proof.proofPurpose;
derivedProof.created = proof.created;
_context2.next = 51;
return jsonld.compact(_extends({}, revealDocumentResult), document["@context"], {
documentLoader: documentLoader
});
case 51:
compactedRevealedDocument = _context2.sent;
return _context2.abrupt("return", {
document: _extends({}, compactedRevealedDocument),
proof: derivedProof
});
case 53:
case "end":
return _context2.stop();
}
}
}, _callee2, this);
}));
function deriveProof(_x2) {
return _deriveProof.apply(this, arguments);
}
return deriveProof;
}();
_proto.canonize = /*#__PURE__*/function () {
var _canonize = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee3(input, options) {
var documentLoader, expansionMap, skipExpansion;
return runtime_1.wrap(function _callee3$(_context3) {
while (1) {
switch (_context3.prev = _context3.next) {
case 0:
documentLoader = options.documentLoader, expansionMap = options.expansionMap, skipExpansion = options.skipExpansion;
return _context3.abrupt("return", jsonld.safeCanonize(input, {
algorithm: "URDNA2015",
format: "application/n-quads",
documentLoader: documentLoader,
expansionMap: expansionMap,
skipExpansion: skipExpansion,
useNative: false
}));
case 2:
case "end":
return _context3.stop();
}
}
}, _callee3);
}));
function canonize(_x3, _x4) {
return _canonize.apply(this, arguments);
}
return canonize;
}();
_proto.canonizeProof = /*#__PURE__*/function () {
var _canonizeProof = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee4(proof, options) {
var documentLoader, expansionMap;
return runtime_1.wrap(function _callee4$(_context4) {
while (1) {
switch (_context4.prev = _context4.next) {
case 0:
documentLoader = options.documentLoader, expansionMap = options.expansionMap;
proof = _extends({}, proof);
delete proof.nonce;
delete proof.proofValue;
return _context4.abrupt("return", this.canonize(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap,
skipExpansion: false
}));
case 5:
case "end":
return _context4.stop();
}
}
}, _callee4, this);
}));
function canonizeProof(_x5, _x6) {
return _canonizeProof.apply(this, arguments);
}
return canonizeProof;
}()
/**
* @param document {CreateVerifyDataOptions} options to create verify data
*
* @returns {Promise<{string[]>}.
*/
;
_proto.createVerifyData =
/*#__PURE__*/
function () {
var _createVerifyData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee5(options) {
var proof, document, documentLoader, expansionMap, proofStatements, documentStatements;
return runtime_1.wrap(function _callee5$(_context5) {
while (1) {
switch (_context5.prev = _context5.next) {
case 0:
proof = options.proof, document = options.document, documentLoader = options.documentLoader, expansionMap = options.expansionMap;
_context5.next = 3;
return this.createVerifyProofData(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
proofStatements = _context5.sent;
_context5.next = 6;
return this.createVerifyDocumentData(document, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 6:
documentStatements = _context5.sent;
return _context5.abrupt("return", proofStatements.concat(documentStatements));
case 8:
case "end":
return _context5.stop();
}
}
}, _callee5, this);
}));
function createVerifyData(_x7) {
return _createVerifyData.apply(this, arguments);
}
return createVerifyData;
}()
/**
* @param proof to canonicalize
* @param options to create verify data
*
* @returns {Promise<{string[]>}.
*/
;
_proto.createVerifyProofData =
/*#__PURE__*/
function () {
var _createVerifyProofData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee6(proof, _ref3) {
var documentLoader, expansionMap, c14nProofOptions;
return runtime_1.wrap(function _callee6$(_context6) {
while (1) {
switch (_context6.prev = _context6.next) {
case 0:
documentLoader = _ref3.documentLoader, expansionMap = _ref3.expansionMap;
_context6.next = 3;
return this.canonizeProof(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
c14nProofOptions = _context6.sent;
return _context6.abrupt("return", c14nProofOptions.split("\n").filter(function (_) {
return _.length > 0;
}));
case 5:
case "end":
return _context6.stop();
}
}
}, _callee6, this);
}));
function createVerifyProofData(_x8, _x9) {
return _createVerifyProofData.apply(this, arguments);
}
return createVerifyProofData;
}()
/**
* @param document to canonicalize
* @param options to create verify data
*
* @returns {Promise<{string[]>}.
*/
;
_proto.createVerifyDocumentData =
/*#__PURE__*/
function () {
var _createVerifyDocumentData = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee7(document, _ref4) {
var documentLoader, expansionMap, c14nDocument;
return runtime_1.wrap(function _callee7$(_context7) {
while (1) {
switch (_context7.prev = _context7.next) {
case 0:
documentLoader = _ref4.documentLoader, expansionMap = _ref4.expansionMap;
_context7.next = 3;
return this.canonize(document, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 3:
c14nDocument = _context7.sent;
return _context7.abrupt("return", c14nDocument.split("\n").filter(function (_) {
return _.length > 0;
}));
case 5:
case "end":
return _context7.stop();
}
}
}, _callee7, this);
}));
function createVerifyDocumentData(_x10, _x11) {
return _createVerifyDocumentData.apply(this, arguments);
}
return createVerifyDocumentData;
}();
_proto.verifyProof = /*#__PURE__*/function () {
var _verifyProof = /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/runtime_1.mark(function _callee8(options) {
var document, documentLoader, expansionMap, purpose, proof, proofStatements, documentStatements, transformedDocumentStatements, statementsToVerify, verificationMethod, key, verified, _yield$purpose$valida, valid, error;
return runtime_1.wrap(function _callee8$(_context8) {
while (1) {
switch (_context8.prev = _context8.next) {
case 0:
document = options.document, documentLoader = options.documentLoader, expansionMap = options.expansionMap, purpose = options.purpose;
proof = options.proof;
_context8.prev = 2;
proof.type = "BbsBlsSignature2020"; // Get the proof statements
_context8.next = 6;
return this.createVerifyProofData(proof, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 6:
proofStatements = _context8.sent;
_context8.next = 9;
return this.createVerifyProofData(document, {
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 9:
documentStatements = _context8.sent;
// Transform the blank node identifier placeholders for the document statements
// back into actual blank node identifiers
transformedDocumentStatements = documentStatements.map(function (element) {
return element.replace(/<urn:bnid:(_:c14n[0-9]+)>/g, "$1");
}); // Combine all the statements to be verified
statementsToVerify = proofStatements.concat(transformedDocumentStatements).map(function (item) {
return new Uint8Array(Buffer.from(item));
});
_context8.next = 14;
return this.getVerificationMethod({
proof: proof,
document: document,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 14:
verificationMethod = _context8.sent;
_context8.next = 17;
return bls12381KeyPair.Bls12381G2KeyPair.from(verificationMethod);
case 17:
key = _context8.sent;
_context8.next = 20;
return bbsSignatures.blsVerifyProof({
proof: new Uint8Array(Buffer.from(proof.proofValue, "base64")),
publicKey: new Uint8Array(key.publicKey),
messages: statementsToVerify,
nonce: new Uint8Array(Buffer.from(proof.nonce, "base64"))
});
case 20:
verified = _context8.sent;
_context8.next = 23;
return purpose.validate(proof, {
document: document,
suite: this,
verificationMethod: verificationMethod,
documentLoader: documentLoader,
expansionMap: expansionMap
});
case 23:
_yield$purpose$valida = _context8.sent;
valid = _yield$purpose$valida.valid;
error = _yield$purpose$valida.error;
if (valid) {
_context8.next = 28;
break;
}
throw error;
case 28:
return _context8.abrupt("return", verified);
case 31:
_context8.prev = 31;
_context8.t0 = _context8["catch"](2);
return _context8.abrupt("return", {
verified: false,
error: _context8.t0
});
case 34:
case "end":
return _context8.stop();
}
}
}, _callee8, this, [[2, 31]]);
}));
function verifyProof(_x12) {
return _verifyProof.apply(this, arguments);
}
return verifyProof;
}();
return BbsBlsSignatureProof2020;
}();
BbsBlsSignatureProof2020.type = "BbsBlsSignatureProof2020";
Object.keys(bls12381KeyPair).forEach(function (k) {
if (k !== 'default') Object.defineProperty(exports, k, {
enumerable: true,
get: function () {
return bls12381KeyPair[k];
}
});
});
exports.BbsBlsSignature2020 = BbsBlsSignature2020;
exports.BbsBlsSignatureProof2020 = BbsBlsSignatureProof2020;
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