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_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)