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#[allow(unused_imports)]
#[macro_use]
extern crate wedpr_l_macros;
#[macro_use]
extern crate lazy_static;
use wedpr_l_utils::{error::WedprError, traits::Signature};
use wedpr_l_libsm::sm2::signature::{SigCtx, Signature as sm2Signature};
lazy_static! {
static ref SM2_CTX: SigCtx = SigCtx::new();
}
#[derive(Default, Debug, Clone)]
pub struct WedprSm2p256v1 {}
impl Signature for WedprSm2p256v1 {
fn sign<T: ?Sized + AsRef<[u8]>>(
&self,
private_key: &T,
msg_hash: &T,
) -> Result<Vec<u8>, WedprError> {
let secret_key = match SM2_CTX.load_seckey(&private_key.as_ref()) {
Ok(v) => v,
Err(_) => {
return Err(WedprError::FormatError);
},
};
let derived_public_key = SM2_CTX.pk_from_sk(&secret_key);
let signature =
SM2_CTX.sign(&msg_hash.as_ref(), &secret_key, &derived_public_key);
Ok(signature.bytes_encode().to_vec())
}
fn verify<T: ?Sized + AsRef<[u8]>>(
&self,
public_key: &T,
msg_hash: &T,
signature: &T,
) -> bool {
let public_key_point = match SM2_CTX.load_pubkey(&public_key.as_ref()) {
Ok(v) => v,
Err(_) => {
return false;
},
};
let parsed_sig = match sm2Signature::bytes_decode(signature.as_ref()) {
Ok(v) => v,
Err(_) => {
return false;
},
};
SM2_CTX.verify(&msg_hash.as_ref(), &public_key_point, &parsed_sig)
}
fn generate_keypair(&self) -> (Vec<u8>, Vec<u8>) {
let (public_key, secret_key) = SM2_CTX.new_keypair();
(
SM2_CTX.serialize_pubkey(&public_key, false),
SM2_CTX.serialize_seckey(&secret_key),
)
}
}
impl WedprSm2p256v1 {
pub fn sign_fast<T: ?Sized + AsRef<[u8]>>(
&self,
private_key: &T,
public_key: &T,
msg_hash: &T,
) -> Result<Vec<u8>, WedprError> {
let secret_key = match SM2_CTX.load_seckey(&private_key.as_ref()) {
Ok(v) => v,
Err(_) => {
return Err(WedprError::FormatError);
},
};
let public_key_point = match SM2_CTX.load_pubkey(&public_key.as_ref()) {
Ok(v) => v,
Err(_) => {
return Err(WedprError::FormatError);
},
};
let signature =
SM2_CTX.sign(&msg_hash.as_ref(), &secret_key, &public_key_point);
Ok(signature.bytes_encode().to_vec())
}
pub fn derive_public_key<T: ?Sized + AsRef<[u8]>>(&self, private_key: &T) -> Result<Vec<u8>, WedprError> {
let secret_key = match SM2_CTX.load_seckey(&private_key.as_ref()) {
Ok(v) => v,
Err(_) => {
return Err(WedprError::FormatError);
},
};
let public_key = SM2_CTX.pk_from_sk(&secret_key);
Ok(SM2_CTX.serialize_pubkey(&public_key, false))
}
}
#[cfg(test)]
mod tests {
use super::*;
use wedpr_l_utils::constant::tests::BASE64_ENCODED_TEST_MESSAGE;
#[test]
fn test_sm2() {
let sm2_sign = WedprSm2p256v1::default();
let msg_hash = BASE64_ENCODED_TEST_MESSAGE;
let (public_key, private_key) = sm2_sign.generate_keypair();
let public_key_derive = sm2_sign.derive_public_key(&private_key).unwrap();
assert_eq!(public_key, public_key_derive);
let signature_normal =
sm2_sign.sign(&private_key, &msg_hash.to_vec()).unwrap();
assert_eq!(
true,
sm2_sign.verify(&public_key_derive, &msg_hash.to_vec(), &signature_normal)
);
let signature_fast = sm2_sign
.sign_fast(&private_key, &public_key, &msg_hash.to_vec())
.unwrap();
assert_eq!(
true,
sm2_sign.verify(&public_key, &msg_hash.to_vec(), &signature_fast)
);
}
}