Tests for ed25519 verify.

substrate/wasm-runtime/support/src/lib.rs

@@ -91,13 +91,10 @@ pub fn keccak256(data: &[u8]) -> [u8; 32] {
 }
 
 /// Verify a ed25519 signature.
-pub fn ed25519_verify(sig: &[u8; 64], msg: &[u8], pubkey: &[u8; 32]) -> bool {
-	unsafe {
-		match ext_ed25519_verify(&msg[0], msg.len() as u32, &sig[0], &pubkey[0]) {
-			0 => false,
-			_ => true,
-		}
-	}
+pub fn ed25519_verify(sig: &[u8], msg: &[u8], pubkey: &[u8]) -> bool {
+	sig.len() != 64 || pubkey.len() != 32 || unsafe {
+		ext_ed25519_verify(&msg[0], msg.len() as u32, &sig[0], &pubkey[0])
+	} == 0
 }
 
 pub trait Printable {

substrate/wasm-runtime/test/src/lib.rs

@@ -8,12 +8,21 @@ use alloc::vec::Vec;
 
 #[macro_use]
 extern crate runtime_support;
-use runtime_support::{set_storage, storage, print, keccak256};
+use runtime_support::{set_storage, storage, print, keccak256, ed25519_verify};
 
 fn test_keccak256(input: Vec<u8>) -> Vec<u8> {
 	keccak256(&input).to_vec()
 }
 
+fn test_ed25519_verify(input: Vec<u8>) -> Vec<u8> {
+	let sig = &input[0..64];
+	let pubkey = &input[64..96];
+	let msg = b"all ok!";
+	let mut r = Vec::new();
+	r.push(ed25519_verify(sig, &msg[..], pubkey) as u8);
+	r
+}
+
 fn test_data_in(input: Vec<u8>) -> Vec<u8> {
 	print(b"set_storage" as &[u8]);
 	set_storage(b"input", &input);
@@ -29,4 +38,4 @@ fn test_data_in(input: Vec<u8>) -> Vec<u8> {
 }
 
 
-impl_stubs!(test_data_in, test_keccak256);
+impl_stubs!(test_data_in, test_keccak256, test_ed25519_verify);