grassrootseconomics/openethereum
5
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix modexp, update tests, update berlin chainspec (#267)

Browse Source
This commit is contained in:
adria0.eth 2021-02-17 19:43:09 +01:00 committed by GitHub
parent fb9699d8e1
commit d8ce175846
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 20 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
crates/ethcore/res/chainspec/test/berlin_test.json
View File

@ -115,8 +115,10 @@
"name": "modexp",
"activate_at": "0x00",
"pricing": {
"modexp": {
"divisor": 20
"0": {
"price": {
"modexp2565": {}
}
}
}
}
@ -199,106 +201,6 @@
}
}
}
},
"000000000000000000000000000000000000000a": {
"builtin": {
"name": "bls12_381_g1_add",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 600
}
}
}
},
"000000000000000000000000000000000000000b": {
"builtin": {
"name": "bls12_381_g1_mul",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 12000
}
}
}
},
"000000000000000000000000000000000000000c": {
"builtin": {
"name": "bls12_381_g1_multiexp",
"activate_at": "0",
"pricing": {
"bls12_g1_multiexp": {
"base": 12000
}
}
}
},
"000000000000000000000000000000000000000d": {
"builtin": {
"name": "bls12_381_g2_add",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 4500
}
}
}
},
"000000000000000000000000000000000000000e": {
"builtin": {
"name": "bls12_381_g2_mul",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 55000
}
}
}
},
"000000000000000000000000000000000000000f": {
"builtin": {
"name": "bls12_381_g2_multiexp",
"activate_at": "0",
"pricing": {
"bls12_g2_multiexp": {
"base": 55000
}
}
}
},
"0000000000000000000000000000000000000010": {
"builtin": {
"name": "bls12_381_pairing",
"activate_at": "0",
"pricing": {
"bls12_pairing": {
"base": 115000,
"pair": 23000
}
}
}
},
"0000000000000000000000000000000000000011": {
"builtin": {
"name": "bls12_381_fp_to_g1",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 5500
}
}
}
},
"0000000000000000000000000000000000000012": {
"builtin": {
"name": "bls12_381_fp2_to_g2",
"activate_at": "0",
"pricing": {
"bls12_const_operations": {
"price": 110000
}
}
}
}
}
}

2
crates/ethcore/res/json_tests

@ -1 +1 @@
Subproject commit f55f344ad25cb97ebf4f3d72eca7a263aabde818
Subproject commit 1508126ea04cd61495b60db2f036ac823de274b1

18
crates/vm/builtin/src/lib.rs
View File

@ -260,7 +260,7 @@ impl Pricer for Modexp2565Pricer {
}
bit_no -= 1;
}
0
1
}
fn calculate_multiplication_complexity(base_len: u64, modulus_len: u64) -> f64 {
@ -283,17 +283,21 @@ impl Pricer for Modexp2565Pricer {
let (base_len, exp_len, exp_low, mod_len) = ModexpPricer::parse_input(input);
if let Some(cost) = ModexpPricer::check_input_boundaries(&base_len, &exp_len, &mod_len) {
return cost;
}
let cost = if let Some(cost) =
ModexpPricer::check_input_boundaries(&base_len, &exp_len, &mod_len)
{
cost
} else {
let (base_len, exp_len, mod_len) =
(base_len.low_u64(), exp_len.low_u64(), mod_len.low_u64());
let multiplication_complexity = calculate_multiplication_complexity(base_len, mod_len);
let iteration_count = calculate_iteration_count(exp_len, &exp_low);
let computed = (multiplication_complexity * iteration_count as f64 / 3f64).floor() as u64;
U256::from(std::cmp::max(200, computed))
let computed =
(multiplication_complexity * iteration_count as f64 / 3f64).floor() as u64;
U256::from(computed)
};
std::cmp::max(U256::from(200), cost)
}
}