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ADDED: Public key signatures and signature verification with Ed25519

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This commit is contained in:
Markus Triska
2020-05-20 18:30:34 +02:00
parent a0544cc345
commit ad3be5c848
4 changed files with 82 additions and 3 deletions
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34
src/prolog/machine/system_calls.rs
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@@ -40,7 +40,7 @@ use crate::crossterm::event::{read, Event, KeyCode, KeyEvent, KeyModifiers};
use crate::crossterm::terminal::{enable_raw_mode, disable_raw_mode};
use ring::rand::{SecureRandom, SystemRandom};
use ring::{digest,hkdf,pbkdf2,aead,error};
use ring::{digest,hkdf,pbkdf2,aead,error,signature};
use ripemd160::{Ripemd160, Digest};
use sha3::{Sha3_224, Sha3_256, Sha3_384, Sha3_512};
use blake2::{Blake2s, Blake2b};
@@ -5448,6 +5448,38 @@ impl MachineState {
self.unify(self[temp_v!(5)], complete_string);
}
&SystemClauseType::Ed25519Sign => {
let stub1 = MachineError::functor_stub(clause_name!("ed25519_sign"), 4);
let key = self.integers_to_bytevec(temp_v!(1), stub1);
let stub2 = MachineError::functor_stub(clause_name!("ed25519_sign"), 4);
let data = self.integers_to_bytevec(temp_v!(2), stub2);
let key_pair = match signature::Ed25519KeyPair::from_pkcs8_maybe_unchecked(&key) {
Ok(kp) => { kp }
_ => { self.fail = true; return Ok(()); }
};
let sig = key_pair.sign(&data);
let sig_list =
Addr::HeapCell(self.heap.to_list(sig.as_ref().iter().map(|b| HeapCellValue::from(Addr::Fixnum(*b as isize)))));
self.unify(self[temp_v!(3)], sig_list);
}
&SystemClauseType::Ed25519Verify => {
let stub1 = MachineError::functor_stub(clause_name!("ed25519_verify"), 4);
let key = self.integers_to_bytevec(temp_v!(1), stub1);
let stub2 = MachineError::functor_stub(clause_name!("ed25519_verify"), 4);
let data = self.integers_to_bytevec(temp_v!(2), stub2);
let stub3 = MachineError::functor_stub(clause_name!("ed25519_verify"), 4);
let signature = self.integers_to_bytevec(temp_v!(3), stub3);
let peer_public_key = signature::UnparsedPublicKey::new(&signature::ED25519, &key);
match peer_public_key.verify(&data, &signature) {
Ok(_) => { }
_ => { self.fail = true; return Ok(()); }
}
}
};
return_from_clause!(self.last_call, self)