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Merge branch 'develop' of github.com:JacobEberhardt/ZoKrates into if-else-array

This commit is contained in:
schaeff 2019-01-18 17:48:23 +01:00
commit e20f104c40
10 changed files with 224 additions and 169 deletions

247
Cargo.lock generated
View file

@ -3,7 +3,7 @@ name = "aho-corasick"
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@ -78,14 +84,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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@ -246,16 +255,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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"checksum walkdir 2.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0ffb549f212c31e19f3667c55a7f515b983a84aef10fd0a4d1f9c125425115f3"
"checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"
"checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
"checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"

View file

@ -4,7 +4,7 @@ MAINTAINER JacobEberhardt <jacob.eberhardt@tu-berlin.de>, Dennis Kuhnert <mail@k
RUN useradd -u 1000 -m zokrates
ARG RUST_TOOLCHAIN=nightly-2018-06-04
ARG RUST_TOOLCHAIN=nightly-2019-01-01
ARG LIBSNARK_COMMIT=f7c87b88744ecfd008126d415494d9b34c4c1b20
ENV LIBSNARK_SOURCE_PATH=/home/zokrates/libsnark-$LIBSNARK_COMMIT
ENV WITH_LIBSNARK=1

View file

@ -4,9 +4,8 @@
# ZoKrates
[![Join the chat at https://gitter.im/ZoKrates/Lobby](https://badges.gitter.im/ZoKrates/Lobby.svg)](https://gitter.im/ZoKrates/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
![Jenkins](https://img.shields.io/jenkins/s/https/jenkins.kyroy.com/job/ZoKrates/job/master.svg?label=master)
![Jenkins](https://img.shields.io/jenkins/s/https/jenkins.kyroy.com/job/ZoKrates/job/develop.svg?label=develop)
[![CircleCI master](https://img.shields.io/circleci/project/github/Zokrates/ZoKrates/master.svg?label=master)](https://circleci.com/gh/Zokrates/ZoKrates/tree/master)
[![CircleCI develop](https://img.shields.io/circleci/project/github/Zokrates/ZoKrates/master.svg?label=develop)](https://circleci.com/gh/Zokrates/ZoKrates/tree/develop)
ZoKrates is a toolbox for zkSNARKs on Ethereum.

View file

@ -4,7 +4,7 @@ MAINTAINER JacobEberhardt <jacob.eberhardt@tu-berlin.de>, Dennis Kuhnert <mail@k
RUN useradd -u 1000 -m zokrates
ARG RUST_TOOLCHAIN=nightly-2018-06-04
ARG RUST_TOOLCHAIN=nightly-2019-01-01
ARG LIBSNARK_COMMIT=f7c87b88744ecfd008126d415494d9b34c4c1b20
ENV LIBSNARK_SOURCE_PATH=/home/zokrates/libsnark-$LIBSNARK_COMMIT
ENV WITH_LIBSNARK=1

View file

@ -22,7 +22,7 @@ def main() -> (field):
### If expressions
An if expression allows you to branch your code depending on conditions.
An if expression allows you to branch your code depending on a condition.
```zokrates
def main(field x) -> (field):
@ -30,6 +30,10 @@ def main(field x) -> (field):
return y
```
The condition supports `<`, `<=`, `>`, `>=`, `==`, which can be combined with the boolean operators `&&`, `||` and `!`.
>When it comes to inequality checks, there is a caveat: when executing `a < b`, both `a` and `b` will be asserted to be strictly lower than the biggest power of 2 lower than `p/2`. This means that `a` and `b` are both asserted to be between `0` and `2**252 - 1`. The same applies to other inequality checks.
### For loops
For loops are available with the following syntax:

View file

@ -1,6 +1,6 @@
[package]
name = "zokrates_cli"
version = "0.3.2"
version = "0.3.3"
authors = ["Jacob Eberhardt <jacob.eberhardt@tu-berlin.de>", "Dennis Kuhnert <mail@kyroy.com>", "Thibaut Schaeffer <thibaut@schaeff.fr>"]
repository = "https://github.com/JacobEberhardt/ZoKrates.git"

View file

@ -51,7 +51,7 @@ fn main() {
// cli specification using clap library
let matches = App::new("ZoKrates")
.setting(AppSettings::SubcommandRequiredElseHelp)
.version("0.3.2")
.version("0.3.3")
.author("Jacob Eberhardt, Thibaut Schaeffer, Dennis Kuhnert")
.about("Supports generation of zkSNARKs from high level language code including Smart Contracts for proof verification on the Ethereum Blockchain.\n'I know that I show nothing!'")
.subcommand(SubCommand::with_name("compile")

View file

@ -1,6 +1,6 @@
[package]
name = "zokrates_core"
version = "0.3.2"
version = "0.3.3"
authors = ["Jacob Eberhardt <jacob.eberhardt@tu-berlin.de>", "Dennis Kuhnert <mail@kyroy.com>"]
repository = "https://github.com/JacobEberhardt/ZoKrates"
readme = "README.md"

View file

@ -211,7 +211,9 @@ std::string r1cs_to_json(protoboard<FieldT> pb)
r1cs_constraint_system<FieldT> constraints = pb.get_constraint_system();
std::stringstream ss;
ss << "{\"input_count\":512, \"outputs\":[513,514,515,516,517,518,519,520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,539,540,541,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,558,559,560,561,562,563,564,565,566,567,568,569,570,571,572,573,574,575,576,577,578,579,580,581,582,583,584,585,586,587,588,589,590,591,592,593,594,595,596,597,598,599,600,601,602,603,604,605,606,607,608,609,610,611,612,613,614,615,616,617,618,619,620,621,622,623,624,625,626,627,628,629,630,631,632,633,634,635,636,637,638,639,640,641,642,643,644,645,646,647,648,649,650,651,652,653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709,710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,728,729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,767,768],\"constraints\":[";
ss << "{\"variable_count\":";
ss << pb.num_variables() + 1; // ~one is not counted in pb.num_variables()
ss << ",\"inputs\":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,349,350,351,352,353,354,355,356,357,358,359,360,361,362,363,364,365,366,367,368,369,370,371,372,373,374,375,376,377,378,379,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,397,398,399,400,401,402,403,404,405,406,407,408,409,410,411,412,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,441,442,443,444,445,446,447,448,449,450,451,452,453,454,455,456,457,458,459,460,461,462,463,464,465,466,467,468,469,470,471,472,473,474,475,476,477,478,479,480,481,482,483,484,485,486,487,488,489,490,491,492,493,494,495,496,497,498,499,500,501,502,503,504,505,506,507,508,509,510,511,512], \"outputs\":[513,514,515,516,517,518,519,520,521,522,523,524,525,526,527,528,529,530,531,532,533,534,535,536,537,538,539,540,541,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,558,559,560,561,562,563,564,565,566,567,568,569,570,571,572,573,574,575,576,577,578,579,580,581,582,583,584,585,586,587,588,589,590,591,592,593,594,595,596,597,598,599,600,601,602,603,604,605,606,607,608,609,610,611,612,613,614,615,616,617,618,619,620,621,622,623,624,625,626,627,628,629,630,631,632,633,634,635,636,637,638,639,640,641,642,643,644,645,646,647,648,649,650,651,652,653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709,710,711,712,713,714,715,716,717,718,719,720,721,722,723,724,725,726,727,728,729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,748,749,750,751,752,753,754,755,756,757,758,759,760,761,762,763,764,765,766,767,768],\"constraints\":[";
for (size_t c = 0; c < constraints.num_constraints(); ++c)
{

View file

@ -2,14 +2,15 @@ use flat_absy::{FlatExpression, FlatExpressionList, FlatFunction, FlatStatement}
use flat_absy::{FlatParameter, FlatVariable};
use helpers::{DirectiveStatement, Helper, LibsnarkGadgetHelper};
use reduce::Reduce;
use std::collections::{BTreeMap, HashSet};
use std::collections::BTreeMap;
use types::{Signature, Type};
use zokrates_field::field::Field;
// for r1cs import, can be moved.
// r1cs data structure reflecting JSON standard format:
// {
// input_count: count, // # of inputs to pass
// variable_count: 435,
// inputs: [offset_1, offset_33], // # of inputs to pass
// outputs: [offset_42, offset_63, offset_55], // indices of the outputs in the witness
// constraints: [ // constraints verified by the witness
// [
@ -20,8 +21,9 @@ use zokrates_field::field::Field;
// }
#[derive(Serialize, Deserialize, Debug)]
pub struct R1CS {
pub input_count: usize,
pub inputs: Vec<usize>,
pub outputs: Vec<usize>,
pub variable_count: usize,
pub constraints: Vec<Constraint>,
}
@ -106,38 +108,32 @@ impl<T: Field> Into<FlatFunction<T>> for DirectiveR1CS {
fn into(self: DirectiveR1CS) -> FlatFunction<T> {
let r1cs = self.r1cs;
// determine the number of variables, assuming there is no i so that column i is only zeroes in a, b and c
let mut variables_set = HashSet::new();
for constraint in r1cs.constraints.iter() {
for (key, _) in &constraint.a {
variables_set.insert(key.clone());
}
for (key, _) in &constraint.b {
variables_set.insert(key.clone());
}
for (key, _) in &constraint.c {
variables_set.insert(key.clone());
}
}
let variable_count = r1cs.variable_count;
let variables_count = variables_set.len();
let input_binding_statements = std::iter::once(FlatStatement::Condition(
FlatVariable::new(0).into(),
FlatExpression::Number(T::from(1)),
))
.chain(r1cs.inputs.iter().enumerate().map(|(index, i)| {
FlatStatement::Condition(
FlatVariable::new(*i).into(),
FlatVariable::new(index + variable_count).into(),
)
}));
// insert flattened statements to represent constraints
let mut statements: Vec<FlatStatement<T>> =
r1cs.constraints.into_iter().map(|c| c.into()).collect();
let constraint_statements = r1cs.constraints.into_iter().map(|c| c.into());
// define the entire witness
let variables = vec![0; variables_count]
let variables = vec![0; variable_count]
.iter()
.enumerate()
.map(|(i, _)| FlatVariable::new(i))
.collect();
// define the inputs with dummy variables: arguments to the function and to the directive
let input_variables: Vec<FlatVariable> = vec![0; r1cs.input_count]
.iter()
.enumerate()
.map(|(i, _)| FlatVariable::new(i + variables_count))
let input_variables: Vec<FlatVariable> = (0..r1cs.inputs.len())
.map(|i| FlatVariable::new(i + variable_count))
.collect();
let arguments = input_variables
.iter()
@ -164,34 +160,29 @@ impl<T: Field> Into<FlatFunction<T>> for DirectiveR1CS {
};
// insert a directive to set the witness based on the libsnark gadget and inputs
match self.directive {
LibsnarkGadgetHelper::Sha256Compress => {
statements.insert(
0,
FlatStatement::Directive(DirectiveStatement {
outputs: variables,
inputs: inputs,
helper: Helper::LibsnarkGadget(LibsnarkGadgetHelper::Sha256Compress),
}),
);
}
LibsnarkGadgetHelper::Sha256Ethereum => {
statements.insert(
0,
FlatStatement::Directive(DirectiveStatement {
outputs: variables,
inputs: inputs,
helper: Helper::LibsnarkGadget(LibsnarkGadgetHelper::Sha256Ethereum),
}),
);
}
}
let directive_statement = match self.directive {
LibsnarkGadgetHelper::Sha256Compress => FlatStatement::Directive(DirectiveStatement {
outputs: variables,
inputs: inputs,
helper: Helper::LibsnarkGadget(LibsnarkGadgetHelper::Sha256Compress),
}),
LibsnarkGadgetHelper::Sha256Ethereum => FlatStatement::Directive(DirectiveStatement {
outputs: variables,
inputs: inputs,
helper: Helper::LibsnarkGadget(LibsnarkGadgetHelper::Sha256Ethereum),
}),
};
// insert a statement to return the subset of the witness
statements.push(FlatStatement::Return(FlatExpressionList {
let return_statement = FlatStatement::Return(FlatExpressionList {
expressions: outputs,
}));
});
let statements = std::iter::once(directive_statement)
.chain(input_binding_statements)
.chain(constraint_statements)
.chain(std::iter::once(return_statement))
.collect();
FlatFunction {
id: "main".to_owned(),
@ -220,4 +211,36 @@ mod tests {
let c: Constraint = serde_json::from_str(constraint).unwrap();
let _statement: FlatStatement<FieldPrime> = c.into();
}
#[test]
fn generate_sha256_constraints() {
use flat_absy::FlatProg;
use libsnark::get_sha256_constraints;
let r1cs: R1CS = serde_json::from_str(&get_sha256_constraints()).unwrap();
let v_count = r1cs.variable_count;
let dr1cs: DirectiveR1CS = DirectiveR1CS {
r1cs,
directive: LibsnarkGadgetHelper::Sha256Compress,
};
let compiled: FlatProg<FieldPrime> = FlatProg::from(dr1cs);
// libsnark variable #0: index 0 should equal 1
assert_eq!(
compiled.functions[0].statements[1],
FlatStatement::Condition(
FlatVariable::new(0).into(),
FlatExpression::Number(FieldPrime::from(1))
)
);
// libsnark input #0: index 1 should equal zokrates input #0: index v_count
assert_eq!(
compiled.functions[0].statements[2],
FlatStatement::Condition(
FlatVariable::new(1).into(),
FlatVariable::new(v_count).into()
)
);
}
}