From 29a7d4bcd81212fbf75c414199d2d6e7c1fdd9b4 Mon Sep 17 00:00:00 2001 From: dark64 Date: Fri, 17 Jul 2020 15:54:37 +0200 Subject: [PATCH 01/11] add metadata gulp task --- zokrates_js/.gitignore | 3 ++- zokrates_js/gulpfile.js | 18 +++++++++++++++--- zokrates_js/index.js | 3 ++- zokrates_js/node/index.js | 3 ++- zokrates_js/package-lock.json | 6 ++++++ zokrates_js/package.json | 6 ++++-- 6 files changed, 31 insertions(+), 8 deletions(-) diff --git a/zokrates_js/.gitignore b/zokrates_js/.gitignore index 43a1f54c..3a63e0e3 100644 --- a/zokrates_js/.gitignore +++ b/zokrates_js/.gitignore @@ -4,4 +4,5 @@ target pkg wasm-pack.log stdlib -stdlib.json \ No newline at end of file +stdlib.json +metadata.json \ No newline at end of file diff --git a/zokrates_js/gulpfile.js b/zokrates_js/gulpfile.js index 4129b607..abb8560a 100644 --- a/zokrates_js/gulpfile.js +++ b/zokrates_js/gulpfile.js @@ -3,10 +3,11 @@ const gulp = require('gulp'); const dree = require('dree'); const fs = require('fs'); const path = require('path'); +const toml = require('toml'); /** stdlib constants */ const stdlibRoot = '../zokrates_stdlib/stdlib'; -const output = 'stdlib.json'; +const stdlibOutput = 'stdlib.json'; const options = { extensions: ['zok'] @@ -22,6 +23,17 @@ gulp.task('stdlib', (done) => { stdlib[file.relativePath] = content; }); - fs.writeFileSync(path.resolve(__dirname, output), JSON.stringify(stdlib)); + fs.writeFileSync(path.resolve(__dirname, stdlibOutput), JSON.stringify(stdlib)); done(); -}); \ No newline at end of file +}); + +gulp.task('metadata', (done) => { + const config = toml.parse(fs.readFileSync('../zokrates_cli/Cargo.toml').toString()); + const metadata = JSON.stringify({ + version: config.package.version + }); + fs.writeFileSync(path.resolve(__dirname, 'metadata.json'), metadata); + done(); +}); + +gulp.task('setup', gulp.series('stdlib', 'metadata')); \ No newline at end of file diff --git a/zokrates_js/index.js b/zokrates_js/index.js index 4f8b8ba0..f4d10ac1 100644 --- a/zokrates_js/index.js +++ b/zokrates_js/index.js @@ -1,9 +1,10 @@ import wrapper from './wrapper'; import stdlib from './stdlib.json'; +import metadata from './metadata.json'; const initialize = async () => { const zokrates = await import('./pkg/index.js'); return wrapper({ zokrates, stdlib }); } -export { initialize }; \ No newline at end of file +export { initialize, metadata }; \ No newline at end of file diff --git a/zokrates_js/node/index.js b/zokrates_js/node/index.js index 681e3ade..1d356ba5 100644 --- a/zokrates_js/node/index.js +++ b/zokrates_js/node/index.js @@ -1,5 +1,6 @@ const wrapper = require('../wrapper.js'); const stdlib = require('../stdlib.json'); +const metadata = require('../metadata.json'); const initialize = async () => { return wrapper({ @@ -8,4 +9,4 @@ const initialize = async () => { }); } -module.exports = { initialize }; \ No newline at end of file +module.exports = { initialize, metadata }; \ No newline at end of file diff --git a/zokrates_js/package-lock.json b/zokrates_js/package-lock.json index b54b5771..276cb307 100644 --- a/zokrates_js/package-lock.json +++ b/zokrates_js/package-lock.json @@ -4572,6 +4572,12 @@ "through2": "^2.0.3" } }, + "toml": { + "version": "3.0.0", + "resolved": "https://registry.npmjs.org/toml/-/toml-3.0.0.tgz", + "integrity": "sha512-y/mWCZinnvxjTKYhJ+pYxwD0mRLVvOtdS2Awbgxln6iEnt4rk0yBxeSBHkGJcPucRiG0e55mwWp+g/05rsrd6w==", + "dev": true + }, "type": { "version": "1.2.0", "resolved": "https://registry.npmjs.org/type/-/type-1.2.0.tgz", diff --git a/zokrates_js/package.json b/zokrates_js/package.json index 1e0a9152..30b851f5 100644 --- a/zokrates_js/package.json +++ b/zokrates_js/package.json @@ -16,12 +16,13 @@ "index.d.ts", "wrapper.js", "stdlib.json", + "metadata.json", "README.md" ], "types": "index.d.ts", "scripts": { "wasm-pack": "wasm-pack build --out-name index --release", - "setup": "npm install && gulp stdlib", + "setup": "npm install && gulp setup", "prebuild": "npm run setup", "build": "npm run build:bundler && npm run build:node", "build:bundler": "rimraf pkg && npm run wasm-pack -- --target bundler && npm run clean-pkg", @@ -39,7 +40,8 @@ "mocha": "^7.1.1", "rimraf": "^3.0.2", "serve": "^11.3.0", - "text-encoding": "^0.7.0" + "text-encoding": "^0.7.0", + "toml": "^3.0.0" }, "dependencies": {} } From d2affdee3154238bb12f362a8a64818566e0da6f Mon Sep 17 00:00:00 2001 From: dark64 Date: Fri, 17 Jul 2020 15:57:44 +0200 Subject: [PATCH 02/11] update index.d.ts --- zokrates_js/index.d.ts | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/zokrates_js/index.d.ts b/zokrates_js/index.d.ts index 263cc255..52ba4cee 100644 --- a/zokrates_js/index.d.ts +++ b/zokrates_js/index.d.ts @@ -60,5 +60,10 @@ declare module 'zokrates-js' { generateProof(program: Uint8Array, witness: string, provingKey: Uint8Array): Proof; } + export interface Metadata { + version: string + } + export function initialize(): Promise; + export var metadata: Metadata; } From 477153eca097cbd4cd76279fd6bf1029993d8220 Mon Sep 17 00:00:00 2001 From: schaeff Date: Mon, 27 Jul 2020 12:02:40 +0200 Subject: [PATCH 03/11] npm audit fix --- zokrates_cli/tests/contract/.gitignore | 1 + zokrates_cli/tests/contract/package-lock.json | 2746 +++++++++++++++++ zokrates_js/package-lock.json | 52 +- zokrates_js/package.json | 2 +- 4 files changed, 2774 insertions(+), 27 deletions(-) create mode 100644 zokrates_cli/tests/contract/.gitignore create mode 100644 zokrates_cli/tests/contract/package-lock.json diff --git a/zokrates_cli/tests/contract/.gitignore b/zokrates_cli/tests/contract/.gitignore new file mode 100644 index 00000000..b512c09d --- /dev/null +++ b/zokrates_cli/tests/contract/.gitignore @@ -0,0 +1 @@ +node_modules \ No newline at end of file diff --git a/zokrates_cli/tests/contract/package-lock.json b/zokrates_cli/tests/contract/package-lock.json new file mode 100644 index 00000000..959d345c --- /dev/null +++ b/zokrates_cli/tests/contract/package-lock.json @@ 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"https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz", - "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=", + "version": "3.0.3", + "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.3.tgz", + "integrity": "sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==", "dev": true }, "snapdragon": { @@ -4957,9 +4957,9 @@ } }, "yargs-parser": { - "version": "18.1.1", - "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.1.tgz", - "integrity": "sha512-KRHEsOM16IX7XuLnMOqImcPNbLVXMNHYAoFc3BKR8Ortl5gzDbtXvvEoGx9imk5E+X1VeNKNlcHr8B8vi+7ipA==", + "version": "18.1.3", + "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz", + "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==", "dev": true, "requires": { "camelcase": "^5.0.0", diff --git a/zokrates_js/package.json b/zokrates_js/package.json index 1e0a9152..e9b3d302 100644 --- a/zokrates_js/package.json +++ b/zokrates_js/package.json @@ -38,7 +38,7 @@ "gulp-cli": "^2.2.0", "mocha": "^7.1.1", "rimraf": "^3.0.2", - "serve": "^11.3.0", + "serve": "^11.3.2", "text-encoding": "^0.7.0" }, "dependencies": {} From b9ec48863d87e7caf9f345a1f9f5d8bda8270ffd Mon Sep 17 00:00:00 2001 From: William Entriken Date: Tue, 28 Jul 2020 21:32:36 -0400 Subject: [PATCH 04/11] Remove unused parts of one_liner.sh --- scripts/one_liner.sh | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/scripts/one_liner.sh b/scripts/one_liner.sh index 7a97575d..a7b36e76 100755 --- a/scripts/one_liner.sh +++ b/scripts/one_liner.sh @@ -233,12 +233,6 @@ err() { exit 1 } -need() { - if ! command -v $1 > /dev/null 2>&1; then - err "need $1 (command not found)" - fi -} - main() { need_cmd curl @@ -259,12 +253,11 @@ main() { done # Dependencies - need basename - need curl - need install - need mkdir - need mktemp - need tar + need_cmd curl + need_cmd install + need_cmd mkdir + need_cmd mktemp + need_cmd tar git="ZoKrates/ZoKrates" From 69e56a94032c3ae352518003d5df7a5ba441182b Mon Sep 17 00:00:00 2001 From: schaeff Date: Fri, 31 Jul 2020 14:36:55 +0200 Subject: [PATCH 05/11] move slice bound checking from ast conversion to semantic checking to fail more gracefully --- zokrates_core/src/absy/from_ast.rs | 18 ++++---------- zokrates_core/src/absy/mod.rs | 14 +++++------ zokrates_core/src/absy/node.rs | 2 +- zokrates_core/src/semantics.rs | 38 ++++++++++++++++++++++++++---- 4 files changed, 46 insertions(+), 26 deletions(-) diff --git a/zokrates_core/src/absy/from_ast.rs b/zokrates_core/src/absy/from_ast.rs index f44dbe49..ca33ff11 100644 --- a/zokrates_core/src/absy/from_ast.rs +++ b/zokrates_core/src/absy/from_ast.rs @@ -409,23 +409,13 @@ impl<'ast, T: Field> From> for absy::SpreadNode<'ast, T> { } } -impl<'ast, T: Field> From> for absy::RangeNode { - fn from(range: pest::Range<'ast>) -> absy::RangeNode { +impl<'ast, T: Field> From> for absy::RangeNode<'ast, T> { + fn from(range: pest::Range<'ast>) -> absy::RangeNode<'ast, T> { use absy::NodeValue; - let from = range - .from - .map(|e| match absy::ExpressionNode::from(e.0).value { - absy::Expression::FieldConstant(n) => n, - e => unimplemented!("Range bounds should be constants, found {}", e), - }); + let from = range.from.map(|e| absy::ExpressionNode::from(e.0)); - let to = range - .to - .map(|e| match absy::ExpressionNode::from(e.0).value { - absy::Expression::FieldConstant(n) => n, - e => unimplemented!("Range bounds should be constants, found {}", e), - }); + let to = range.to.map(|e| absy::ExpressionNode::from(e.0)); absy::Range { from, to }.span(range.span) } diff --git a/zokrates_core/src/absy/mod.rs b/zokrates_core/src/absy/mod.rs index 86b80582..bb2d7d09 100644 --- a/zokrates_core/src/absy/mod.rs +++ b/zokrates_core/src/absy/mod.rs @@ -395,7 +395,7 @@ impl<'ast, T: fmt::Debug> fmt::Debug for SpreadOrExpression<'ast, T> { /// The index in an array selector. Can be a range or an expression. #[derive(Clone, PartialEq)] pub enum RangeOrExpression<'ast, T> { - Range(RangeNode), + Range(RangeNode<'ast, T>), Expression(ExpressionNode<'ast, T>), } @@ -439,14 +439,14 @@ pub struct Spread<'ast, T> { /// A range #[derive(Clone, PartialEq)] -pub struct Range { - pub from: Option, - pub to: Option, +pub struct Range<'ast, T> { + pub from: Option>, + pub to: Option>, } -pub type RangeNode = Node>; +pub type RangeNode<'ast, T> = Node>; -impl<'ast, T: fmt::Display> fmt::Display for Range { +impl<'ast, T: fmt::Display> fmt::Display for Range<'ast, T> { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!( f, @@ -463,7 +463,7 @@ impl<'ast, T: fmt::Display> fmt::Display for Range { } } -impl<'ast, T: fmt::Debug> fmt::Debug for Range { +impl<'ast, T: fmt::Debug> fmt::Debug for Range<'ast, T> { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "Range({:?}, {:?})", self.from, self.to) } diff --git a/zokrates_core/src/absy/node.rs b/zokrates_core/src/absy/node.rs index 1cbc059d..1b4807be 100644 --- a/zokrates_core/src/absy/node.rs +++ b/zokrates_core/src/absy/node.rs @@ -91,7 +91,7 @@ impl<'ast> NodeValue for Variable<'ast> {} impl<'ast> NodeValue for Parameter<'ast> {} impl<'ast> NodeValue for Import<'ast> {} impl<'ast, T: fmt::Display + fmt::Debug + PartialEq> NodeValue for Spread<'ast, T> {} -impl NodeValue for Range {} +impl<'ast, T: fmt::Display + fmt::Debug + PartialEq> NodeValue for Range<'ast, T> {} impl PartialEq for Node { fn eq(&self, other: &Node) -> bool { diff --git a/zokrates_core/src/semantics.rs b/zokrates_core/src/semantics.rs index 949e72b7..a8953a41 100644 --- a/zokrates_core/src/semantics.rs +++ b/zokrates_core/src/semantics.rs @@ -1644,17 +1644,47 @@ impl<'ast> Checker<'ast> { let array_size = array.size(); let inner_type = array.inner_type().clone(); + // check that the bounds are valid expressions let from = r .value .from - .map(|v| v.to_dec_string().parse::().unwrap()) - .unwrap_or(0); + .map(|e| self.check_expression(e, module_id, &types)) + .unwrap_or(Ok(FieldElementExpression::Number(T::from(0)).into()))?; let to = r .value .to - .map(|v| v.to_dec_string().parse::().unwrap()) - .unwrap_or(array_size); + .map(|e| self.check_expression(e, module_id, &types)) + .unwrap_or(Ok(FieldElementExpression::Number(T::from(0)).into()))?; + + // check the bounds are field constants + // Note: it would be nice to allow any field expression, and check it's a constant after constant propagation, + // but it's tricky from a type perspective: the size of the slice changes the type of the resulting array, + // which doesn't work well with our static array approach. Enabling arrays to have unknown size introduces a lot + // of complexity in the compiler, as function selection in inlining requires knowledge of the array size, but + // determining array size potentially requires inlining and propagating. This suggests we would need semantic checking + // to happen iteratively with inlining and propagation, which we can't do now as we go from absy to typed_absy + let from = match from { + TypedExpression::FieldElement(FieldElementExpression::Number(n)) => Ok(n.to_dec_string().parse::().unwrap()), + e => Err(ErrorInner { + pos: Some(pos), + message: format!( + "Expected the lower bound of the range to be a constant field, found {}", + e + ), + }) + }?; + + let to = match to { + TypedExpression::FieldElement(FieldElementExpression::Number(n)) => Ok(n.to_dec_string().parse::().unwrap()), + e => Err(ErrorInner { + pos: Some(pos), + message: format!( + "Expected the higher bound of the range to be a constant field, found {}", + e + ), + }) + }?; match (from, to, array_size) { (f, _, s) if f > s => Err(ErrorInner { From fce5e85ccf41c129d1470098081d41fd7b80b601 Mon Sep 17 00:00:00 2001 From: schaeff Date: Fri, 31 Jul 2020 15:05:00 +0200 Subject: [PATCH 06/11] fix typo --- zokrates_core/src/semantics.rs | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/zokrates_core/src/semantics.rs b/zokrates_core/src/semantics.rs index a8953a41..3bc91e1a 100644 --- a/zokrates_core/src/semantics.rs +++ b/zokrates_core/src/semantics.rs @@ -1655,7 +1655,10 @@ impl<'ast> Checker<'ast> { .value .to .map(|e| self.check_expression(e, module_id, &types)) - .unwrap_or(Ok(FieldElementExpression::Number(T::from(0)).into()))?; + .unwrap_or(Ok(FieldElementExpression::Number(T::from( + array_size, + )) + .into()))?; // check the bounds are field constants // Note: it would be nice to allow any field expression, and check it's a constant after constant propagation, From 59619dbd916e22fc476cde5954f95d01423d8559 Mon Sep 17 00:00:00 2001 From: dark64 Date: Mon, 3 Aug 2020 13:32:39 +0200 Subject: [PATCH 07/11] update zokrates.js book --- zokrates_book/src/zokrates_js.md | 79 ++++++++++++++++++++++++------- zokrates_js/README.md | 81 +++++++++++++++++++++++++------- 2 files changed, 125 insertions(+), 35 deletions(-) diff --git a/zokrates_book/src/zokrates_js.md b/zokrates_book/src/zokrates_js.md index 726449c0..134edeae 100644 --- a/zokrates_book/src/zokrates_js.md +++ b/zokrates_book/src/zokrates_js.md @@ -6,34 +6,25 @@ You can get JavaScript bindings for ZoKrates by running npm install zokrates-js ``` -## API +## Importing -| Function | Description | -| ------ | ------ | -| initialize | Loads binding wasm module and returns a promise with ZoKrates provider | -| compile | Compiles source code into ZoKrates internal representation of arithmetic circuits | -| computeWitness | Computes a valid assignment of the variables, which include the results of the computation | -| setup | Generates a trusted setup for the compiled program | -| exportSolidityVerifier | Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program | -| generateProof | Generates a proof for a computation of the compiled program | - -## Usage - -### Importing - -Bundlers +##### Bundlers +**Note:** As this library uses a model where the wasm module itself is natively an ES module, you will need a bundler of some form. +Currently the only known bundler known to be fully compatible with `zokrates-js` is [Webpack](https://webpack.js.org/). +The choice of this default was done to reflect the trends of the JS ecosystem. ```js import { initialize } from 'zokrates-js'; ``` -Node +##### Node ```js const { initialize } = require('zokrates-js/node'); ``` -### Example +## Example ```js function importResolver(currentLocation, importLocation) { + console.log(currentLocation + ' is importing ' + importLocation); // implement your resolving logic here return { source: "def main() -> (): return", @@ -60,3 +51,57 @@ initialize().then((zokratesProvider) => { const verifier = zokratesProvider.exportSolidityVerifier(keypair.vk, "v1"); }); ``` + +## API + +##### initialize() +Loads binding wasm module and returns a promise with ZoKrates provider. + +Returns: `Promise` + +##### compile(source, location, resolveCallback[, config]) +Compiles source code into ZoKrates internal representation of arithmetic circuits. + +Parameters: +* `source` - Source code to compile +* `location` - Root location of the module which is being compiled +* `resolveCallback` - User-defined callback used to resolve imports +* `config` - Compilation config + +Returns: `CompilationArtifacts` + +##### computeWitness(artifacts, args) +Computes a valid assignment of the variables, which include the results of the computation. + +Parameters: +* `artifacts` - Compilation artifacts +* `args` - Array of arguments (eg. `["1", "2", true]`) + +Returns: `ComputationResult` + +##### setup(program) +Generates a trusted setup for the compiled program. + +Parameters: +* `program` - Compiled program + +Returns: `SetupKeypair` + +##### exportSolidityVerifier(verificationKey, abi) +Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program. + +Parameters: +* `verificationKey` - Verification key from the setup keypair +* `abi` - Abi version (`"v1"` | `"v2"`) + +Returns: `string` + +##### generateProof(program, witness, provingKey) +Generates a proof for a computation of the compiled program. + +Parameters: +* `program` - Compiled program +* `witness` - Witness (valid assignment of the variables) +* `provingKey` - Proving key from the setup keypair + +Returns: `Proof` \ No newline at end of file diff --git a/zokrates_js/README.md b/zokrates_js/README.md index 2863185f..c1944a33 100644 --- a/zokrates_js/README.md +++ b/zokrates_js/README.md @@ -6,34 +6,25 @@ JavaScript bindings for [ZoKrates](https://github.com/Zokrates/ZoKrates) project npm install zokrates-js ``` -## API +## Importing -| Function | Description | -| ------ | ------ | -| initialize | Loads binding wasm module and returns a promise with ZoKrates provider | -| compile | Compiles source code into ZoKrates internal representation of arithmetic circuits | -| computeWitness | Computes a valid assignment of the variables, which include the results of the computation | -| setup | Generates a trusted setup for the compiled program | -| exportSolidityVerifier | Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program | -| generateProof | Generates a proof for a computation of the compiled program | - -## Usage - -### Importing - -Bundlers +##### Bundlers +**Note:** As this library uses a model where the wasm module itself is natively an ES module, you will need a bundler of some form. +Currently the only known bundler known to be fully compatible with `zokrates-js` is [Webpack](https://webpack.js.org/). +The choice of this default was done to reflect the trends of the JS ecosystem. ```js import { initialize } from 'zokrates-js'; ``` -Node +##### Node ```js const { initialize } = require('zokrates-js/node'); ``` -### Example +## Example ```js function importResolver(currentLocation, importLocation) { + console.log(currentLocation + ' is importing ' + importLocation); // implement your resolving logic here return { source: "def main() -> (): return", @@ -59,4 +50,58 @@ initialize().then((zokratesProvider) => { // export solidity verifier const verifier = zokratesProvider.exportSolidityVerifier(keypair.vk, "v1"); }); -``` \ No newline at end of file +``` + +## API + +##### initialize() +Loads binding wasm module and returns a promise with ZoKrates provider. + +Returns: `Promise` + +##### compile(source, location, resolveCallback[, config]) +Compiles source code into ZoKrates internal representation of arithmetic circuits. + +Parameters: +* `source` - Source code to compile +* `location` - Root location of the module which is being compiled +* `resolveCallback` - User-defined callback used to resolve imports +* `config` - Compilation config + +Returns: `CompilationArtifacts` + +##### computeWitness(artifacts, args) +Computes a valid assignment of the variables, which include the results of the computation. + +Parameters: +* `artifacts` - Compilation artifacts +* `args` - Array of arguments (eg. `["1", "2", true]`) + +Returns: `ComputationResult` + +##### setup(program) +Generates a trusted setup for the compiled program. + +Parameters: +* `program` - Compiled program + +Returns: `SetupKeypair` + +##### exportSolidityVerifier(verificationKey, abi) +Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program. + +Parameters: +* `verificationKey` - Verification key from the setup keypair +* `abi` - Abi version (`"v1"` | `"v2"`) + +Returns: `string` + +##### generateProof(program, witness, provingKey) +Generates a proof for a computation of the compiled program. + +Parameters: +* `program` - Compiled program +* `witness` - Witness (valid assignment of the variables) +* `provingKey` - Proving key from the setup keypair + +Returns: `Proof` \ No newline at end of file From 3fc40e091a7f339a381268fbb46524710c0ad8a9 Mon Sep 17 00:00:00 2001 From: dark64 Date: Mon, 3 Aug 2020 20:49:27 +0200 Subject: [PATCH 08/11] update book, fix tests, add CompileOptions parameter --- zokrates_book/src/zokrates_js.md | 55 ++++++++++++++--- zokrates_js/README.md | 102 +------------------------------ zokrates_js/gulpfile.js | 2 +- zokrates_js/index.d.ts | 14 +++-- zokrates_js/src/lib.rs | 19 ++---- zokrates_js/tests/tests.js | 75 ++++++++++++----------- zokrates_js/wrapper.js | 9 +-- 7 files changed, 108 insertions(+), 168 deletions(-) diff --git a/zokrates_book/src/zokrates_js.md b/zokrates_book/src/zokrates_js.md index 134edeae..717f52e9 100644 --- a/zokrates_book/src/zokrates_js.md +++ b/zokrates_book/src/zokrates_js.md @@ -1,6 +1,6 @@ # zokrates.js -You can get JavaScript bindings for ZoKrates by running +JavaScript bindings for [ZoKrates](https://github.com/Zokrates/ZoKrates). ```bash npm install zokrates-js @@ -55,21 +55,50 @@ initialize().then((zokratesProvider) => { ## API ##### initialize() -Loads binding wasm module and returns a promise with ZoKrates provider. +Dynamically loads binding wasm module containing Rust-generated wasm functions and returns a promise with a ZoKrates provider. +The resolved provider can be used to call exported functions. Returns: `Promise` -##### compile(source, location, resolveCallback[, config]) +##### compile(source[, options]) Compiles source code into ZoKrates internal representation of arithmetic circuits. Parameters: * `source` - Source code to compile -* `location` - Root location of the module which is being compiled -* `resolveCallback` - User-defined callback used to resolve imports -* `config` - Compilation config +* `options` - Compilation options Returns: `CompilationArtifacts` +**Examples:** + +Compilation: +```js +zokratesProvider.compile("def main() -> (): return"); +``` + +Compilation with custom options: +```js +const source = "..."; +const options = { + location: "main.zok", // root module location + resolveCallback: (currentLocation, importLocation) => { + console.log(currentLocation + ' is importing ' + importLocation); + return { + source: "def main() -> (): return", + location: importLocation + }; + } + config: { + is_release: true + } +}; +zokratesProvider.compile(source, options); +``` + +**Note:** The `resolveCallback` function is used to resolve unmet dependencies. +This callback receives the current module location and the import location of the module which is being imported. +The callback must synchronously return either an error, `null` or a valid `ResolverResult` object like shown in the example above. + ##### computeWitness(artifacts, args) Computes a valid assignment of the variables, which include the results of the computation. @@ -79,6 +108,18 @@ Parameters: Returns: `ComputationResult` +**Example:** + +```js +const code = 'def main(private field a) -> (field): return a * a'; +const artifacts = zokratesProvider.compile(code); + +const { witness, output } = zokratesProvider.computeWitness(artifacts, ["2"]); + +console.log(witness); // Resulting witness which can be used to generate a proof +console.log(output); // Computation output: ["4"] +``` + ##### setup(program) Generates a trusted setup for the compiled program. @@ -101,7 +142,7 @@ Generates a proof for a computation of the compiled program. Parameters: * `program` - Compiled program -* `witness` - Witness (valid assignment of the variables) +* `witness` - Witness (valid assignment of the variables) from the computation result * `provingKey` - Proving key from the setup keypair Returns: `Proof` \ No newline at end of file diff --git a/zokrates_js/README.md b/zokrates_js/README.md index c1944a33..c16752db 100644 --- a/zokrates_js/README.md +++ b/zokrates_js/README.md @@ -1,107 +1,9 @@ # zokrates.js -JavaScript bindings for [ZoKrates](https://github.com/Zokrates/ZoKrates) project. +JavaScript bindings for [ZoKrates](https://github.com/Zokrates/ZoKrates) project. ```bash npm install zokrates-js ``` -## Importing - -##### Bundlers -**Note:** As this library uses a model where the wasm module itself is natively an ES module, you will need a bundler of some form. -Currently the only known bundler known to be fully compatible with `zokrates-js` is [Webpack](https://webpack.js.org/). -The choice of this default was done to reflect the trends of the JS ecosystem. -```js -import { initialize } from 'zokrates-js'; -``` - -##### Node -```js -const { initialize } = require('zokrates-js/node'); -``` - -## Example -```js -function importResolver(currentLocation, importLocation) { - console.log(currentLocation + ' is importing ' + importLocation); - // implement your resolving logic here - return { - source: "def main() -> (): return", - location: importLocation - }; -} - -initialize().then((zokratesProvider) => { - const source = "def main(private field a) -> (field): return a * a"; - - // compilation - const artifacts = zokratesProvider.compile(source, "main", importResolver); - - // computation - const { witness, output } = zokratesProvider.computeWitness(artifacts, ["2"]); - - // run setup - const keypair = zokratesProvider.setup(artifacts.program); - - // generate proof - const proof = zokratesProvider.generateProof(artifacts.program, witness, keypair.pk); - - // export solidity verifier - const verifier = zokratesProvider.exportSolidityVerifier(keypair.vk, "v1"); -}); -``` - -## API - -##### initialize() -Loads binding wasm module and returns a promise with ZoKrates provider. - -Returns: `Promise` - -##### compile(source, location, resolveCallback[, config]) -Compiles source code into ZoKrates internal representation of arithmetic circuits. - -Parameters: -* `source` - Source code to compile -* `location` - Root location of the module which is being compiled -* `resolveCallback` - User-defined callback used to resolve imports -* `config` - Compilation config - -Returns: `CompilationArtifacts` - -##### computeWitness(artifacts, args) -Computes a valid assignment of the variables, which include the results of the computation. - -Parameters: -* `artifacts` - Compilation artifacts -* `args` - Array of arguments (eg. `["1", "2", true]`) - -Returns: `ComputationResult` - -##### setup(program) -Generates a trusted setup for the compiled program. - -Parameters: -* `program` - Compiled program - -Returns: `SetupKeypair` - -##### exportSolidityVerifier(verificationKey, abi) -Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program. - -Parameters: -* `verificationKey` - Verification key from the setup keypair -* `abi` - Abi version (`"v1"` | `"v2"`) - -Returns: `string` - -##### generateProof(program, witness, provingKey) -Generates a proof for a computation of the compiled program. - -Parameters: -* `program` - Compiled program -* `witness` - Witness (valid assignment of the variables) -* `provingKey` - Proving key from the setup keypair - -Returns: `Proof` \ No newline at end of file +Check the offical [ZoKrates documentation](https://zokrates.github.io/zokrates_js.html) for more details. \ No newline at end of file diff --git a/zokrates_js/gulpfile.js b/zokrates_js/gulpfile.js index abb8560a..22ea298f 100644 --- a/zokrates_js/gulpfile.js +++ b/zokrates_js/gulpfile.js @@ -36,4 +36,4 @@ gulp.task('metadata', (done) => { done(); }); -gulp.task('setup', gulp.series('stdlib', 'metadata')); \ No newline at end of file +gulp.task('setup', gulp.parallel('stdlib', 'metadata')); \ No newline at end of file diff --git a/zokrates_js/index.d.ts b/zokrates_js/index.d.ts index 52ba4cee..c7757e9c 100644 --- a/zokrates_js/index.d.ts +++ b/zokrates_js/index.d.ts @@ -4,10 +4,19 @@ declare module 'zokrates-js' { export type G2Affine = [G1Affine, G1Affine]; export type ProvingKey = Uint8Array; + export type SolidityAbi = "v1" | "v2"; + export type ResolveCallback = (location: string, path: string) => ResolverResult; + export interface CompileConfig { is_release: boolean } + export interface CompileOptions { + location?: string, + resolveCallback?: ResolveCallback, + config?: CompileConfig + } + export interface VerificationKey { alpha: G1Affine, beta: G2Affine, @@ -49,11 +58,8 @@ declare module 'zokrates-js' { pk: ProvingKey, } - export type SolidityAbi = "v1" | "v2"; - export type ResolveCallback = (location: string, path: string) => ResolverResult; - export interface ZoKratesProvider { - compile(source: string, location: string, callback: ResolveCallback, config?: CompileConfig): CompilationArtifacts; + compile(source: string, options?: CompileOptions): CompilationArtifacts; setup(program: Uint8Array): SetupKeypair; computeWitness(artifacts: CompilationArtifacts, args: any[]): ComputationResult; exportSolidityVerifier(verifyingKey: VerificationKey, abi: SolidityAbi): string; diff --git a/zokrates_js/src/lib.rs b/zokrates_js/src/lib.rs index 5b051e31..91d04f86 100644 --- a/zokrates_js/src/lib.rs +++ b/zokrates_js/src/lib.rs @@ -98,22 +98,13 @@ impl<'a> Resolver for JsResolver<'a> { pub fn compile( source: JsValue, location: JsValue, - resolve: &js_sys::Function, + resolve_callback: &js_sys::Function, config: JsValue, ) -> Result { + let resolver = JsResolver::new(resolve_callback); + let config: CompileConfig = config.into_serde().unwrap_or(CompileConfig::default()); + let fmt_error = |e: &CompileError| format!("{}:{}", e.file().display(), e.value()); - let resolver = JsResolver::new(resolve); - - let config: CompileConfig = { - if config.is_object() { - config - .into_serde() - .map_err(|e| JsValue::from_str(&format!("Invalid config format: {}", e)))? - } else { - CompileConfig::default() - } - }; - let artifacts: CompilationArtifacts = core_compile( source.as_string().unwrap(), PathBuf::from(location.as_string().unwrap()), @@ -208,8 +199,6 @@ pub fn generate_proof(program: JsValue, witness: JsValue, pk: JsValue) -> Result #[wasm_bindgen(start)] pub fn main_js() -> Result<(), JsValue> { - #[cfg(debug_assertions)] console_error_panic_hook::set_once(); - Ok(()) } diff --git a/zokrates_js/tests/tests.js b/zokrates_js/tests/tests.js index e6ca9951..2c3dbf7e 100644 --- a/zokrates_js/tests/tests.js +++ b/zokrates_js/tests/tests.js @@ -14,112 +14,113 @@ describe('tests', function() { describe("compilation", () => { it('should compile', function() { assert.doesNotThrow(() => { - const artifacts = this.zokrates.compile("def main() -> (field): return 42", "main"); + const artifacts = this.zokrates.compile("def main() -> (field): return 42"); assert.ok(artifacts !== undefined); }) }); it('should throw on invalid code', function() { - assert.throws(() => this.zokrates.compile(":-)", "main")); + assert.throws(() => this.zokrates.compile(":-)")); }); it('should resolve stdlib module', function() { + const stdlib = require('../stdlib.json'); assert.doesNotThrow(() => { - const code = ` - def main() -> (): - return - `; - this.zokrates.compile(code, "main"); - }) + const code = `import "${Object.keys(stdlib)[0]}" as func\ndef main() -> (): return`; + this.zokrates.compile(code); + }); }); it('should resolve user module', function() { assert.doesNotThrow(() => { const code = 'import "test" as test\ndef main() -> (field): return test()'; - this.zokrates.compile(code, "main", (_, path) => { - return { - source: "def main() -> (field): return 1", - location: path + const options = { + resolveCallback: (_, path) => { + return { + source: "def main() -> (field): return 1", + location: path + } } - }); - }) + }; + this.zokrates.compile(code, options); + }); }); - it('should throw on invalid module', function() { + it('should throw on unresolved module', function() { assert.throws(() => { const code = 'import "test" as test\ndef main() -> (field): return test()'; - this.zokrates.compile(code, "main", (_loc, _path) => null); - }) + this.zokrates.compile(code); + }); }); - }) + }); describe("computation", () => { it('should compute with valid inputs', function() { assert.doesNotThrow(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); - const result = this.zokrates.computeWitness(artifacts, ["2"]) + const result = this.zokrates.computeWitness(artifacts, ["2"]); const output = JSON.parse(result.output); assert.deepEqual(output, ["4"]); - }) + }); }); it('should throw on invalid input count', function() { assert.throws(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); - this.zokrates.computeWitness(artifacts, ["1", "2"]) - }) + this.zokrates.computeWitness(artifacts, ["1", "2"]); + }); }); it('should throw on invalid input type', function() { assert.throws(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); - this.zokrates.computeWitness(artifacts, [true]) - }) + this.zokrates.computeWitness(artifacts, [true]); + }); }); - }) + }); describe("setup", () => { it('should run setup', function() { assert.doesNotThrow(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); this.zokrates.setup(artifacts.program); - }) + }); }); - }) + }); describe("export-verifier", () => { it('should export solidity verifier', function() { assert.doesNotThrow(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); const keypair = this.zokrates.setup(artifacts.program); const verifier = this.zokrates.exportSolidityVerifier(keypair.vk, "v1"); - assert.ok(verifier.length > 0) - }) + assert.ok(verifier.length > 0); + }); }); - }) + }); describe("generate-proof", () => { it('should generate proof', function() { assert.doesNotThrow(() => { const code = 'def main(private field a) -> (field): return a * a'; - const artifacts = this.zokrates.compile(code, "main", null); + const artifacts = this.zokrates.compile(code); const computationResult = this.zokrates.computeWitness(artifacts, ["2"]) const keypair = this.zokrates.setup(artifacts.program); const proof = this.zokrates.generateProof(artifacts.program, computationResult.witness, keypair.pk); assert.ok(proof !== undefined); - assert.deepEqual(proof.inputs, ["0x0000000000000000000000000000000000000000000000000000000000000004"]) + assert.deepEqual(proof.inputs, ["0x0000000000000000000000000000000000000000000000000000000000000004"]); }) }); }); diff --git a/zokrates_js/wrapper.js b/zokrates_js/wrapper.js index 37401642..8a5881fa 100644 --- a/zokrates_js/wrapper.js +++ b/zokrates_js/wrapper.js @@ -35,11 +35,12 @@ module.exports = (dep) => { } return { - compile: (source, location, callback) => { - let importCallback = (currentLocation, importLocation) => { - return resolveFromStdlib(currentLocation, importLocation) || callback(currentLocation, importLocation); + compile: (source, options = {}) => { + const { location = "main.zok", resolveCallback = () => null, config } = options; + const callback = (currentLocation, importLocation) => { + return resolveFromStdlib(currentLocation, importLocation) || resolveCallback(currentLocation, importLocation); }; - const { program, abi } = zokrates.compile(source, location, importCallback); + const { program, abi } = zokrates.compile(source, location, callback, config); return { program: Array.from(program), abi From 13461e000e97c15bfcd0b4a0fe4279ae7ac539ac Mon Sep 17 00:00:00 2001 From: dark64 Date: Mon, 3 Aug 2020 20:58:01 +0200 Subject: [PATCH 09/11] missing comma --- zokrates_book/src/zokrates_js.md | 19 +++++-------------- 1 file changed, 5 insertions(+), 14 deletions(-) diff --git a/zokrates_book/src/zokrates_js.md b/zokrates_book/src/zokrates_js.md index 717f52e9..b62278c0 100644 --- a/zokrates_book/src/zokrates_js.md +++ b/zokrates_book/src/zokrates_js.md @@ -23,20 +23,11 @@ const { initialize } = require('zokrates-js/node'); ## Example ```js -function importResolver(currentLocation, importLocation) { - console.log(currentLocation + ' is importing ' + importLocation); - // implement your resolving logic here - return { - source: "def main() -> (): return", - location: importLocation - }; -} - initialize().then((zokratesProvider) => { const source = "def main(private field a) -> (field): return a * a"; // compilation - const artifacts = zokratesProvider.compile(source, "main", importResolver); + const artifacts = zokratesProvider.compile(source); // computation const { witness, output } = zokratesProvider.computeWitness(artifacts, ["2"]); @@ -73,26 +64,26 @@ Returns: `CompilationArtifacts` Compilation: ```js -zokratesProvider.compile("def main() -> (): return"); +const artifacts = zokratesProvider.compile("def main() -> (): return"); ``` Compilation with custom options: ```js const source = "..."; const options = { - location: "main.zok", // root module location + location: "main.zok", // location of the root module resolveCallback: (currentLocation, importLocation) => { console.log(currentLocation + ' is importing ' + importLocation); return { source: "def main() -> (): return", location: importLocation }; - } + }, config: { is_release: true } }; -zokratesProvider.compile(source, options); +const artifacts = zokratesProvider.compile(source, options); ``` **Note:** The `resolveCallback` function is used to resolve unmet dependencies. From 15543102da7a130224d8baf3bb98c6270f5f2db4 Mon Sep 17 00:00:00 2001 From: dark64 Date: Tue, 4 Aug 2020 00:55:34 +0200 Subject: [PATCH 10/11] update book --- zokrates_book/src/zokrates_js.md | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/zokrates_book/src/zokrates_js.md b/zokrates_book/src/zokrates_js.md index b62278c0..b0d2e3c8 100644 --- a/zokrates_book/src/zokrates_js.md +++ b/zokrates_book/src/zokrates_js.md @@ -46,8 +46,13 @@ initialize().then((zokratesProvider) => { ## API ##### initialize() -Dynamically loads binding wasm module containing Rust-generated wasm functions and returns a promise with a ZoKrates provider. -The resolved provider can be used to call exported functions. +Returns an initialized `ZoKratesProvider` as a promise. + +```js +initialize().then(zokratesProvider => { + // call api functions here +}); +``` Returns: `Promise` From 276a73b9cbedf4732bc5294be1f7489c8913229f Mon Sep 17 00:00:00 2001 From: Darko Macesic Date: Tue, 4 Aug 2020 11:07:55 +0200 Subject: [PATCH 11/11] Apply suggestions from code review Co-authored-by: Thibaut Schaeffer --- zokrates_book/src/zokrates_js.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/zokrates_book/src/zokrates_js.md b/zokrates_book/src/zokrates_js.md index b0d2e3c8..e26009ab 100644 --- a/zokrates_book/src/zokrates_js.md +++ b/zokrates_book/src/zokrates_js.md @@ -91,7 +91,7 @@ const options = { const artifacts = zokratesProvider.compile(source, options); ``` -**Note:** The `resolveCallback` function is used to resolve unmet dependencies. +**Note:** The `resolveCallback` function is used to resolve dependencies. This callback receives the current module location and the import location of the module which is being imported. The callback must synchronously return either an error, `null` or a valid `ResolverResult` object like shown in the example above. @@ -125,7 +125,7 @@ Parameters: Returns: `SetupKeypair` ##### exportSolidityVerifier(verificationKey, abi) -Generates a Solidity contract which contains the generated verification key and a public function to verify a solution to the compiled program. +Generates a Solidity contract which contains the generated verification key and a public function to verify proofs of computation of the compiled program. Parameters: * `verificationKey` - Verification key from the setup keypair @@ -141,4 +141,4 @@ Parameters: * `witness` - Witness (valid assignment of the variables) from the computation result * `provingKey` - Proving key from the setup keypair -Returns: `Proof` \ No newline at end of file +Returns: `Proof`