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sklppy88 authored May 21, 2024
2 parents 7bbed9e + f9c74c4 commit 557c4c5
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Expand Up @@ -60,7 +60,7 @@ To summarize:
- _Public_ functions altering public state (updatable storage) must be executed at the current "head" of the chain, which only the sequencer can ensure, so these must be executed separately to the _private_ functions.
- _Private_ and _public_ functions within an Aztec transaction are therefore ordered such that first _private_ functions are executed, and then _public_.

A more comprehensive overview of the interplay between private and public functions and their ability to manipulate data is presented below. It is worth noting that all data reads performed by private functions are historical in nature, and that private functions are not capable of modifying public storage. Conversely, public functions have the capacity to manipulate private storage (e.g., inserting new note hashes, potentially as part of transferring funds from the public domain to the secret domain).
A more comprehensive overview of the interplay between private and public functions and their ability to manipulate data is presented below. It is worth noting that all data reads performed by private functions are historical in nature, and that private functions are not capable of modifying public storage. Conversely, public functions have the capacity to manipulate private storage (e.g., inserting new note hashes, potentially as part of transferring funds from the public domain to the private domain).

<Image img={require("/img/com-abs-4.png")} />

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8 changes: 4 additions & 4 deletions docs/docs/reference/smart_contract_reference/index.md
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Expand Up @@ -15,7 +15,7 @@ The structure of a contract artifact is as follows:
"functions": [
{
"name": "constructor",
"functionType": "secret",
"functionType": "private",
"isInternal": false,
"parameters": [],
"returnTypes": [],
Expand All @@ -24,7 +24,7 @@ The structure of a contract artifact is as follows:
},
{
"name": "on_card_played",
"functionType": "open",
"functionType": "public",
"isInternal": true,
"parameters": [
{
Expand Down Expand Up @@ -75,8 +75,8 @@ A simple string that matches the name that the contract developer used for this
#### `function.functionType`
The function type can have one of the following values:

- Secret: The function is ran and proved locally by the clients, and its bytecode not published to the network.
- Open: The function is ran and proved by the sequencer, and its bytecode is published to the network.
- Private: The function is ran and proved locally by the clients, and its bytecode not published to the network.
- Public: The function is ran and proved by the sequencer, and its bytecode is published to the network.
- Unconstrained: The function is ran locally by the clients to generate digested information useful for the user. It's not meant to be transacted against.

#### `function.isInternal`
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Expand Up @@ -41,18 +41,18 @@ contract ImportTest {
}

// Calls the emit_nullifier_public on the Test contract at the target address
// Used for testing calling an open function
// Used for testing calling a public function
// See yarn-project/end-to-end/src/e2e_nested_contract.test.ts
#[aztec(private)]
fn call_open_fn(target: AztecAddress) {
fn call_public_fn(target: AztecAddress) {
Test::at(target).emit_nullifier_public(1).enqueue(&mut context);
}

// Calls the emit_nullifier_public on the Test contract at the target address
// Used for testing calling an open function from another open function
// Used for testing calling a public function from another public function
// See yarn-project/end-to-end/src/e2e_nested_contract.test.ts
#[aztec(public)]
fn pub_call_open_fn(target: AztecAddress) {
fn pub_call_public_fn(target: AztecAddress) {
Test::at(target).emit_nullifier_public(1).call(&mut context);
}
}
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4 changes: 2 additions & 2 deletions yarn-project/aztec.js/src/contract/contract.test.ts
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Expand Up @@ -43,7 +43,7 @@ describe('Contract Class', () => {
{
name: 'bar',
isInitializer: false,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
debugSymbols: '',
Expand All @@ -70,7 +70,7 @@ describe('Contract Class', () => {
name: 'baz',
isInitializer: false,
isStatic: false,
functionType: FunctionType.OPEN,
functionType: FunctionType.PUBLIC,
isInternal: false,
parameters: [],
returnTypes: [],
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Expand Up @@ -81,15 +81,15 @@ export class ContractFunctionInteraction extends BaseContractInteraction {

const txRequest = await this.create();
// const from =
// this.functionDao.functionType == FunctionType.SECRET ? options.from ?? this.wallet.getAddress() : undefined;
// this.functionDao.functionType == FunctionType.PRIVATE ? options.from ?? this.wallet.getAddress() : undefined;

const simulatedTx = await this.wallet.simulateTx(txRequest, true, options?.from);

// As account entrypoints are private, for private functions we retrieve the return values from the first nested call
// since we're interested in the first set of values AFTER the account entrypoint
// For public functions we retrieve the first values directly from the public output.
const rawReturnValues =
this.functionDao.functionType == FunctionType.SECRET
this.functionDao.functionType == FunctionType.PRIVATE
? simulatedTx.privateReturnValues?.nested?.[0].values
: simulatedTx.publicOutput?.publicReturnValues?.values;

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Expand Up @@ -37,7 +37,7 @@ export class DefaultMultiCallEntrypoint implements EntrypointInterface {
return {
name: 'entrypoint',
isInitializer: false,
functionType: 'secret',
functionType: 'private',
isInternal: false,
isStatic: false,
parameters: [
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4 changes: 2 additions & 2 deletions yarn-project/aztec.js/src/wallet/account_wallet.ts
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Expand Up @@ -228,7 +228,7 @@ export class AccountWallet extends BaseWallet {
return {
name: 'approve_public_authwit',
isInitializer: false,
functionType: FunctionType.OPEN,
functionType: FunctionType.PUBLIC,
isInternal: true,
isStatic: false,
parameters: [
Expand All @@ -246,7 +246,7 @@ export class AccountWallet extends BaseWallet {
return {
name: 'cancel_authwit',
isInitializer: false,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: true,
isStatic: false,
parameters: [
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8 changes: 0 additions & 8 deletions yarn-project/builder/src/fixtures/test_contract/Nargo.toml

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11 changes: 0 additions & 11 deletions yarn-project/builder/src/fixtures/test_contract/src/main.nr

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7 changes: 0 additions & 7 deletions yarn-project/builder/src/fixtures/test_lib/Nargo.toml

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1 change: 0 additions & 1 deletion yarn-project/builder/src/fixtures/test_lib/src/lib.nr

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1 change: 0 additions & 1 deletion yarn-project/builder/src/fixtures/test_lib/src/module.nr

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3 changes: 0 additions & 3 deletions yarn-project/builder/src/fixtures/test_lib/src/module/foo.nr

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2 changes: 1 addition & 1 deletion yarn-project/circuits.js/src/contract/artifact_hash.ts
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Expand Up @@ -52,7 +52,7 @@ export function computeArtifactHash(
}

export function computeArtifactHashPreimage(artifact: ContractArtifact) {
const privateFunctionRoot = computeArtifactFunctionTreeRoot(artifact, FunctionType.SECRET);
const privateFunctionRoot = computeArtifactFunctionTreeRoot(artifact, FunctionType.PRIVATE);
const unconstrainedFunctionRoot = computeArtifactFunctionTreeRoot(artifact, FunctionType.UNCONSTRAINED);
const metadataHash = computeArtifactMetadataHash(artifact);
return { privateFunctionRoot, unconstrainedFunctionRoot, metadataHash };
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Expand Up @@ -33,7 +33,7 @@ describe('ContractAddress', () => {

it('computeInitializationHash', () => {
const mockInitFn: FunctionAbi = {
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInitializer: false,
isInternal: false,
isStatic: false,
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4 changes: 2 additions & 2 deletions yarn-project/circuits.js/src/contract/contract_class.test.ts
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Expand Up @@ -20,10 +20,10 @@ describe('ContractClass', () => {

// Check function selectors match
const publicFunctionSelectors = artifact.functions
.filter(fn => fn.functionType === FunctionType.OPEN)
.filter(fn => fn.functionType === FunctionType.PUBLIC)
.map(fn => FunctionSelector.fromNameAndParameters(fn));
const privateFunctionSelectors = artifact.functions
.filter(fn => fn.functionType === FunctionType.SECRET)
.filter(fn => fn.functionType === FunctionType.PRIVATE)
.map(fn => FunctionSelector.fromNameAndParameters(fn));

expect(new Set(contractClass.publicFunctions.map(fn => fn.selector))).toEqual(new Set(publicFunctionSelectors));
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4 changes: 2 additions & 2 deletions yarn-project/circuits.js/src/contract/contract_class.ts
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Expand Up @@ -18,7 +18,7 @@ export function getContractClassFromArtifact(
): ContractClassWithId & ContractClassIdPreimage {
const artifactHash = 'artifactHash' in artifact ? artifact.artifactHash : computeArtifactHash(artifact);
const publicFunctions: ContractClass['publicFunctions'] = artifact.functions
.filter(f => f.functionType === FunctionType.OPEN)
.filter(f => f.functionType === FunctionType.PUBLIC)
.map(f => ({
selector: FunctionSelector.fromNameAndParameters(f.name, f.parameters),
bytecode: f.bytecode,
Expand All @@ -28,7 +28,7 @@ export function getContractClassFromArtifact(
const packedBytecode = packBytecode(publicFunctions);

const privateFunctions: ContractClass['privateFunctions'] = artifact.functions
.filter(f => f.functionType === FunctionType.SECRET)
.filter(f => f.functionType === FunctionType.PRIVATE)
.map(getContractClassPrivateFunctionFromArtifact)
.sort(cmpFunctionArtifacts);

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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ describe('private_function_membership_proof', () => {
beforeAll(() => {
artifact = getBenchmarkContractArtifact();
contractClass = getContractClassFromArtifact(artifact);
privateFunction = artifact.functions.findLast(fn => fn.functionType === FunctionType.SECRET)!;
privateFunction = artifact.functions.findLast(fn => fn.functionType === FunctionType.PRIVATE)!;
vkHash = computeVerificationKeyHash(privateFunction.verificationKey!);
selector = FunctionSelector.fromNameAndParameters(privateFunction);
});
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Expand Up @@ -32,7 +32,7 @@ export function createPrivateFunctionMembershipProof(

// Locate private function definition and artifact
const privateFunctions = artifact.functions
.filter(fn => fn.functionType === FunctionType.SECRET)
.filter(fn => fn.functionType === FunctionType.PRIVATE)
.map(getContractClassPrivateFunctionFromArtifact);
const privateFunction = privateFunctions.find(fn => fn.selector.equals(selector));
const privateFunctionArtifact = artifact.functions.find(fn => selector.equals(fn));
Expand All @@ -54,7 +54,7 @@ export function createPrivateFunctionMembershipProof(
// And the "artifact tree" captures function bytecode and metadata, and is used by the pxe to check that its executing the code it's supposed to be executing, but it never goes into circuits.
const functionMetadataHash = computeFunctionMetadataHash(privateFunctionArtifact);
const functionArtifactHash = computeFunctionArtifactHash({ ...privateFunctionArtifact, functionMetadataHash });
const artifactTree = computeArtifactFunctionTree(artifact, FunctionType.SECRET)!;
const artifactTree = computeArtifactFunctionTree(artifact, FunctionType.PRIVATE)!;
const artifactTreeLeafIndex = artifactTree.getIndex(functionArtifactHash.toBuffer());
const artifactTreeSiblingPath = artifactTree.getSiblingPath(artifactTreeLeafIndex).map(Fr.fromBuffer);

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2 changes: 1 addition & 1 deletion yarn-project/circuits.js/src/structs/function_data.ts
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ export class FunctionData {
static fromAbi(abi: FunctionAbi | ContractFunctionDao): FunctionData {
return new FunctionData(
FunctionSelector.fromNameAndParameters(abi.name, abi.parameters),
abi.functionType === FunctionType.SECRET,
abi.functionType === FunctionType.PRIVATE,
abi.isStatic,
);
}
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12 changes: 6 additions & 6 deletions yarn-project/end-to-end/src/e2e_nested_contract/importer.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -33,13 +33,13 @@ describe('e2e_nested_contract manual', () => {
await importerContract.methods.call_no_args(testContract.address).send().wait();
});

it('calls an open function', async () => {
logger.info(`Calling openfn on importer contract`);
await importerContract.methods.call_open_fn(testContract.address).send().wait();
it('calls a public function', async () => {
logger.info(`Calling public_fn on importer contract`);
await importerContract.methods.call_public_fn(testContract.address).send().wait();
});

it('calls an open function from an open function', async () => {
logger.info(`Calling pub openfn on importer contract`);
await importerContract.methods.pub_call_open_fn(testContract.address).send().wait();
it('calls a public function from a public function', async () => {
logger.info(`Calling pub_public_fn on importer contract`);
await importerContract.methods.pub_call_public_fn(testContract.address).send().wait();
});
});
2 changes: 1 addition & 1 deletion yarn-project/entrypoints/src/account_entrypoint.ts
Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,7 @@ export class DefaultAccountEntrypoint implements EntrypointInterface {
return {
name: 'entrypoint',
isInitializer: false,
functionType: 'secret',
functionType: 'private',
isInternal: false,
isStatic: false,
parameters: [
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2 changes: 1 addition & 1 deletion yarn-project/entrypoints/src/dapp_entrypoint.ts
Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ export class DefaultDappEntrypoint implements EntrypointInterface {
return {
name: 'entrypoint',
isInitializer: false,
functionType: 'secret',
functionType: 'private',
isInternal: false,
isStatic: false,
parameters: [
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4 changes: 2 additions & 2 deletions yarn-project/foundation/src/abi/abi.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -46,8 +46,8 @@ describe('abi', () => {
it('prefers functions based on type', () => {
const contract = {
functions: [
{ name: 'foo', isInitializer: true, functionType: FunctionType.OPEN },
{ name: 'bar', isInitializer: true, functionType: FunctionType.SECRET },
{ name: 'foo', isInitializer: true, functionType: FunctionType.PUBLIC },
{ name: 'bar', isInitializer: true, functionType: FunctionType.PRIVATE },
],
} as ContractArtifact;
expect(getDefaultInitializer(contract)?.name).toEqual('bar');
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6 changes: 3 additions & 3 deletions yarn-project/foundation/src/abi/abi.ts
Original file line number Diff line number Diff line change
Expand Up @@ -144,8 +144,8 @@ export interface StructType extends BasicType<'struct'> {
* Aztec.nr function types.
*/
export enum FunctionType {
SECRET = 'secret',
OPEN = 'open',
PRIVATE = 'private',
PUBLIC = 'public',
UNCONSTRAINED = 'unconstrained',
}

Expand Down Expand Up @@ -404,7 +404,7 @@ export function getDefaultInitializer(contractArtifact: ContractArtifact): Funct
? initializers.find(f => f.name === 'constructor') ??
initializers.find(f => f.name === 'initializer') ??
initializers.find(f => f.parameters?.length === 0) ??
initializers.find(f => f.functionType === FunctionType.SECRET) ??
initializers.find(f => f.functionType === FunctionType.PRIVATE) ??
initializers[0]
: initializers[0];
}
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16 changes: 8 additions & 8 deletions yarn-project/foundation/src/abi/encoder.test.ts
Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ describe('abi/encoder', () => {
it('serializes fields as fields', () => {
const abi: FunctionAbi = {
name: 'constructor',
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isInitializer: true,
isStatic: false,
Expand All @@ -32,7 +32,7 @@ describe('abi/encoder', () => {
const abi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand All @@ -57,7 +57,7 @@ describe('abi/encoder', () => {
const abi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand All @@ -83,7 +83,7 @@ describe('abi/encoder', () => {
const abi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand Down Expand Up @@ -119,7 +119,7 @@ describe('abi/encoder', () => {
const abi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand Down Expand Up @@ -151,7 +151,7 @@ describe('abi/encoder', () => {
const testFunctionAbi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand All @@ -174,7 +174,7 @@ describe('abi/encoder', () => {
const testFunctionAbi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand All @@ -200,7 +200,7 @@ describe('abi/encoder', () => {
const testFunctionAbi: FunctionAbi = {
name: 'constructor',
isInitializer: true,
functionType: FunctionType.SECRET,
functionType: FunctionType.PRIVATE,
isInternal: false,
isStatic: false,
parameters: [
Expand Down
4 changes: 2 additions & 2 deletions yarn-project/simulator/src/client/simulator.ts
Original file line number Diff line number Diff line change
Expand Up @@ -68,8 +68,8 @@ export class AcirSimulator {
contractAddress: AztecAddress,
msgSender = AztecAddress.ZERO,
): Promise<ExecutionResult> {
if (entryPointArtifact.functionType !== FunctionType.SECRET) {
throw new Error(`Cannot run ${entryPointArtifact.functionType} function as secret`);
if (entryPointArtifact.functionType !== FunctionType.PRIVATE) {
throw new Error(`Cannot run ${entryPointArtifact.functionType} function as private`);
}

if (request.origin !== contractAddress) {
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