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Implemented seal_ecdsa_recovery function in the contract pallet (#9686)

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* Implemented `seal_ecdsa_recovery` function in the contract pallet.
Added benchmark and unit test.

* Run `cargo fmt`

* Skip fmt for slices

* Changes according comments in pull request.

* Fix build without `unstable-interface` feature

* Applied suggestion from the review

* Apply suggestions from code review

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* Apply suggestions from code review

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* Changed RecoveryFailed to EcdsaRecoverFailed

* Manually updated weights.rs

* Apply suggestions from code review

Co-authored-by: Michael Müller <mich@elmueller.net>

Co-authored-by: Alexander Theißen <alex.theissen@me.com>
Co-authored-by: Michael Müller <mich@elmueller.net>
This commit is contained in:
GreenBaneling | Supercolony
2021-09-10 14:30:56 +03:00
committed by GitHub
parent 110ba540ec
commit a36e881783
13 changed files with 985 additions and 654 deletions
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substrate/frame/contracts/src/benchmarking/mod.rs
+54
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@@ -1415,6 +1415,60 @@ benchmarks! {
let origin = RawOrigin::Signed(instance.caller.clone());
}: call(origin, instance.addr, 0u32.into(), Weight::max_value(), vec![])
// Only calling the function itself with valid arguments.
// It generates different private keys and signatures for the message "Hello world".
seal_ecdsa_recover {
let r in 0 .. API_BENCHMARK_BATCHES;
use rand::SeedableRng;
let mut rng = rand_pcg::Pcg32::seed_from_u64(123456);
let message_hash = sp_io::hashing::blake2_256("Hello world".as_bytes());
let signatures = (0..r * API_BENCHMARK_BATCH_SIZE)
.map(|i| {
use secp256k1::{SecretKey, Message, sign};
let private_key = SecretKey::random(&mut rng);
let (signature, recovery_id) = sign(&Message::parse(&message_hash), &private_key);
let mut full_signature = [0; 65];
full_signature[..64].copy_from_slice(&signature.serialize());
full_signature[64] = recovery_id.serialize();
full_signature
})
.collect::<Vec<_>>();
let signatures = signatures.iter().flatten().cloned().collect::<Vec<_>>();
let signatures_bytes_len = signatures.len() as i32;
let code = WasmModule::<T>::from(ModuleDefinition {
memory: Some(ImportedMemory::max::<T>()),
imported_functions: vec![ImportedFunction {
module: "__unstable__",
name: "seal_ecdsa_recover",
params: vec![ValueType::I32, ValueType::I32, ValueType::I32],
return_type: Some(ValueType::I32),
}],
data_segments: vec![
DataSegment {
offset: 0,
value: message_hash[..].to_vec(),
},
DataSegment {
offset: 32,
value: signatures,
},
],
call_body: Some(body::repeated_dyn(r * API_BENCHMARK_BATCH_SIZE, vec![
Counter(32, 65), // signature_ptr
Regular(Instruction::I32Const(0)), // message_hash_ptr
Regular(Instruction::I32Const(signatures_bytes_len + 32)), // output_len_ptr
Regular(Instruction::Call(0)),
Regular(Instruction::Drop),
])),
.. Default::default()
});
let instance = Contract::<T>::new(code, vec![])?;
let origin = RawOrigin::Signed(instance.caller.clone());
}: call(origin, instance.addr, 0u32.into(), Weight::max_value(), vec![])
// We make the assumption that pushing a constant and dropping a value takes roughly
// the same amount of time. We follow that `t.load` and `drop` both have the weight
// of this benchmark / 2. We need to make this assumption because there is no way