revm_optimism/
bn128.rs

1use precompile::{
2    bn128, {PrecompileError, PrecompileResult, PrecompileWithAddress},
3};
4
5pub mod pair {
6    use super::*;
7
8    pub const GRANITE_MAX_INPUT_SIZE: usize = 112687;
9    pub const GRANITE: PrecompileWithAddress =
10        PrecompileWithAddress(bn128::pair::ADDRESS, |input, gas_limit| {
11            run_pair(input, gas_limit)
12        });
13
14    pub fn run_pair(input: &[u8], gas_limit: u64) -> PrecompileResult {
15        if input.len() > GRANITE_MAX_INPUT_SIZE {
16            return Err(PrecompileError::Bn128PairLength);
17        }
18        bn128::run_pair(
19            input,
20            bn128::pair::ISTANBUL_PAIR_PER_POINT,
21            bn128::pair::ISTANBUL_PAIR_BASE,
22            gas_limit,
23        )
24    }
25}
26
27#[cfg(test)]
28mod tests {
29    use super::*;
30    use revm::{precompile::PrecompileError, primitives::hex};
31    use std::vec;
32
33    #[test]
34    fn test_bn128_pair() {
35        let input = hex::decode(
36            "\
37      1c76476f4def4bb94541d57ebba1193381ffa7aa76ada664dd31c16024c43f59\
38      3034dd2920f673e204fee2811c678745fc819b55d3e9d294e45c9b03a76aef41\
39      209dd15ebff5d46c4bd888e51a93cf99a7329636c63514396b4a452003a35bf7\
40      04bf11ca01483bfa8b34b43561848d28905960114c8ac04049af4b6315a41678\
41      2bb8324af6cfc93537a2ad1a445cfd0ca2a71acd7ac41fadbf933c2a51be344d\
42      120a2a4cf30c1bf9845f20c6fe39e07ea2cce61f0c9bb048165fe5e4de877550\
43      111e129f1cf1097710d41c4ac70fcdfa5ba2023c6ff1cbeac322de49d1b6df7c\
44      2032c61a830e3c17286de9462bf242fca2883585b93870a73853face6a6bf411\
45      198e9393920d483a7260bfb731fb5d25f1aa493335a9e71297e485b7aef312c2\
46      1800deef121f1e76426a00665e5c4479674322d4f75edadd46debd5cd992f6ed\
47      090689d0585ff075ec9e99ad690c3395bc4b313370b38ef355acdadcd122975b\
48      12c85ea5db8c6deb4aab71808dcb408fe3d1e7690c43d37b4ce6cc0166fa7daa",
49        )
50        .unwrap();
51        let expected =
52            hex::decode("0000000000000000000000000000000000000000000000000000000000000001")
53                .unwrap();
54        let outcome = pair::run_pair(&input, 260_000).unwrap();
55        assert_eq!(outcome.bytes, expected);
56
57        // Invalid input length
58        let input = hex::decode(
59            "\
60          1111111111111111111111111111111111111111111111111111111111111111\
61          1111111111111111111111111111111111111111111111111111111111111111\
62          111111111111111111111111111111\
63      ",
64        )
65        .unwrap();
66
67        let res = pair::run_pair(&input, 260_000);
68        assert!(matches!(res, Err(PrecompileError::Bn128PairLength)));
69
70        // Valid input length shorter than 112687
71        let input = vec![1u8; 586 * bn128::PAIR_ELEMENT_LEN];
72        let res = pair::run_pair(&input, 260_000);
73        assert!(matches!(res, Err(PrecompileError::OutOfGas)));
74
75        // Input length longer than 112687
76        let input = vec![1u8; 587 * bn128::PAIR_ELEMENT_LEN];
77        let res = pair::run_pair(&input, 260_000);
78        assert!(matches!(res, Err(PrecompileError::Bn128PairLength)));
79    }
80}
revm_optimism/bn128.rs

revm_optimism/
bn128.rs
