40 lines
1 KiB
Rust
40 lines
1 KiB
Rust
extern crate zokrates_common;
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extern crate zokrates_core;
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extern crate zokrates_field;
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use std::io;
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use zokrates_common::Resolver;
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use zokrates_core::{
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compile::{compile, CompilationArtifacts, CompileConfig},
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ir::Interpreter,
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};
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use zokrates_field::Bn128Field;
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#[test]
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fn out_of_range() {
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let source = r#"
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def main(private field a) -> (field):
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field x = if a < 5555 then 3333 else 4444 fi
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assert(x == 3333)
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return 1
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"#
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.to_string();
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// let's try to prove that "10000 < 5555" is true by exploiting
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// the fact that `2*10000 - 2*5555` has two distinct bit decompositions
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// we chose the one which is out of range, ie the sum check features an overflow
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let res: CompilationArtifacts<Bn128Field> = compile(
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source,
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"./path/to/file".into(),
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None::<&dyn Resolver<io::Error>>,
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&CompileConfig::default(),
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)
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.unwrap();
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let interpreter = Interpreter::try_out_of_range();
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assert!(interpreter
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.execute(&res.prog(), &vec![Bn128Field::from(10000)])
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.is_err());
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}
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