def test_cosi_sign(self): self.setup_mnemonic_pin_passphrase() digest = sha256(b"this is a message").digest() c0 = cosi.commit(self.client, parse_path("10018'/0'"), digest) c1 = cosi.commit(self.client, parse_path("10018'/1'"), digest) c2 = cosi.commit(self.client, parse_path("10018'/2'"), digest) global_pk = cosi.combine_keys([c0.pubkey, c1.pubkey, c2.pubkey]) global_R = cosi.combine_keys( [c0.commitment, c1.commitment, c2.commitment]) # fmt: off sig0 = cosi.sign(self.client, parse_path("10018'/0'"), digest, global_R, global_pk) sig1 = cosi.sign(self.client, parse_path("10018'/1'"), digest, global_R, global_pk) sig2 = cosi.sign(self.client, parse_path("10018'/2'"), digest, global_R, global_pk) # fmt: on sig = cosi.combine_sig( global_R, [sig0.signature, sig1.signature, sig2.signature]) cosi.verify(sig, digest, global_pk)
def test_cosi_commit(self, client): digest = sha256(b"this is a message").digest() c0 = cosi.commit(client, parse_path("10018'/0'"), digest) c1 = cosi.commit(client, parse_path("10018'/1'"), digest) c2 = cosi.commit(client, parse_path("10018'/2'"), digest) assert c0.pubkey != c1.pubkey assert c0.pubkey != c2.pubkey assert c1.pubkey != c2.pubkey assert c0.commitment != c1.commitment assert c0.commitment != c2.commitment assert c1.commitment != c2.commitment digestb = sha256(b"this is a different message").digest() c0b = cosi.commit(client, parse_path("10018'/0'"), digestb) c1b = cosi.commit(client, parse_path("10018'/1'"), digestb) c2b = cosi.commit(client, parse_path("10018'/2'"), digestb) assert c0.pubkey == c0b.pubkey assert c1.pubkey == c1b.pubkey assert c2.pubkey == c2b.pubkey assert c0.commitment != c0b.commitment assert c1.commitment != c1b.commitment assert c2.commitment != c2b.commitment
def test_cosi_commit(self): self.setup_mnemonic_pin_passphrase() digest = sha256(b"this is a message").digest() c0 = cosi.commit(self.client, parse_path("10018'/0'"), digest) c1 = cosi.commit(self.client, parse_path("10018'/1'"), digest) c2 = cosi.commit(self.client, parse_path("10018'/2'"), digest) assert c0.pubkey != c1.pubkey assert c0.pubkey != c2.pubkey assert c1.pubkey != c2.pubkey assert c0.commitment != c1.commitment assert c0.commitment != c2.commitment assert c1.commitment != c2.commitment digestb = sha256(b"this is a different message").digest() c0b = cosi.commit(self.client, parse_path("10018'/0'"), digestb) c1b = cosi.commit(self.client, parse_path("10018'/1'"), digestb) c2b = cosi.commit(self.client, parse_path("10018'/2'"), digestb) assert c0.pubkey == c0b.pubkey assert c1.pubkey == c1b.pubkey assert c2.pubkey == c2b.pubkey assert c0.commitment != c0b.commitment assert c1.commitment != c1b.commitment assert c2.commitment != c2b.commitment
def test_cosi_sign(self): self.setup_mnemonic_pin_passphrase() digest = sha256(b"this is a message").digest() c0 = cosi.commit(self.client, parse_path("10018'/0'"), digest) c1 = cosi.commit(self.client, parse_path("10018'/1'"), digest) c2 = cosi.commit(self.client, parse_path("10018'/2'"), digest) global_pk = cosi.combine_keys([c0.pubkey, c1.pubkey, c2.pubkey]) global_R = cosi.combine_keys([c0.commitment, c1.commitment, c2.commitment]) # fmt: off sig0 = cosi.sign(self.client, parse_path("10018'/0'"), digest, global_R, global_pk) sig1 = cosi.sign(self.client, parse_path("10018'/1'"), digest, global_R, global_pk) sig2 = cosi.sign(self.client, parse_path("10018'/2'"), digest, global_R, global_pk) # fmt: on sig = cosi.combine_sig( global_R, [sig0.signature, sig1.signature, sig2.signature] ) cosi.verify(sig, digest, global_pk)
def test_cosi_sign(client): digest = sha256(b"this is a message").digest() c0 = cosi.commit(client, parse_path("10018'/0'"), digest) c1 = cosi.commit(client, parse_path("10018'/1'"), digest) c2 = cosi.commit(client, parse_path("10018'/2'"), digest) global_pk = cosi.combine_keys([c0.pubkey, c1.pubkey, c2.pubkey]) global_R = cosi.combine_keys([c0.commitment, c1.commitment, c2.commitment]) # fmt: off sig0 = cosi.sign(client, parse_path("10018'/0'"), digest, global_R, global_pk) sig1 = cosi.sign(client, parse_path("10018'/1'"), digest, global_R, global_pk) sig2 = cosi.sign(client, parse_path("10018'/2'"), digest, global_R, global_pk) # fmt: on sig = cosi.combine_sig(global_R, [sig0.signature, sig1.signature, sig2.signature]) cosi.verify_combined(sig, digest, global_pk)
def test_cosi_compat(client): digest = sha256(b"this is not a pipe").digest() remote_commit = cosi.commit(client, parse_path("10018'/0'"), digest) local_privkey = sha256(b"private key").digest()[:32] local_pubkey = cosi.pubkey_from_privkey(local_privkey) local_nonce, local_commitment = cosi.get_nonce(local_privkey, digest, 42) global_pk = cosi.combine_keys([remote_commit.pubkey, local_pubkey]) global_R = cosi.combine_keys([remote_commit.commitment, local_commitment]) remote_sig = cosi.sign(client, parse_path("10018'/0'"), digest, global_R, global_pk) local_sig = cosi.sign_with_privkey(digest, local_privkey, global_pk, local_nonce, global_R) sig = cosi.combine_sig(global_R, [remote_sig.signature, local_sig]) cosi.verify_combined(sig, digest, global_pk)
def test_cosi_compat(self): self.setup_mnemonic_pin_passphrase() digest = sha256(b"this is not a pipe").digest() remote_commit = cosi.commit(self.client, parse_path("10018'/0'"), digest) local_privkey = sha256(b"private key").digest()[:32] local_pubkey = cosi.pubkey_from_privkey(local_privkey) local_nonce, local_commitment = cosi.get_nonce(local_privkey, digest, 42) global_pk = cosi.combine_keys([remote_commit.pubkey, local_pubkey]) global_R = cosi.combine_keys([remote_commit.commitment, local_commitment]) remote_sig = cosi.sign( self.client, parse_path("10018'/0'"), digest, global_R, global_pk ) local_sig = cosi.sign_with_privkey( digest, local_privkey, global_pk, local_nonce, global_R ) sig = cosi.combine_sig(global_R, [remote_sig.signature, local_sig]) cosi.verify(sig, digest, global_pk)