Add BLS12381G2 keys to multikey manager (openwallet-foundation#3640)

Author: gmulhearn

acapy_agent/wallet/keys/manager.py

@@ -2,7 +2,7 @@
 
 from ...core.profile import ProfileSession
 from ..base import BaseWallet
-from ..key_type import ED25519, P256, KeyType
+from ..key_type import BLS12381G2, ED25519, P256, KeyType
 from ..util import b58_to_bytes, bytes_to_b58
 from ...utils.multiformats import multibase
 from ...wallet.error import WalletNotFoundError
@@ -22,6 +22,12 @@
         "prefix_hex": "8024",
         "prefix_length": 2,
     },
+    "bls12381g2": {
+        "key_type": BLS12381G2,
+        "multikey_prefix": "zUC7",
+        "prefix_hex": "eb01",
+        "prefix_length": 2,
+    },
 }
 
 
@@ -84,6 +90,11 @@ async def resolve_multikey_from_verification_method(self, kid: str):
         elif verification_method.type == "Ed25519VerificationKey2020":
             multikey = verification_method.public_key_multibase
 
+        elif verification_method.type == "Bls12381G2Key2020":
+            multikey = verkey_to_multikey(
+                verification_method.public_key_base58, alg="bls12381g2"
+            )
+
         else:
             raise MultikeyManagerError("Unknown verification method type.")
 

acapy_agent/wallet/keys/tests/test_key_operations.py

@@ -22,6 +22,10 @@ class TestKeyOperations(IsolatedAsyncioTestCase):
     p256_verkey = "demmi97mhJ7JQu31git4hQz8a1PD1dETJH9TVKaynNQv"
     p256_alg = "p256"
 
+    bls12381g2_multikey = "zUC71fcKNvfU5d4NT3vurh8wdBqD2VSaVz7RdHmsfFBiYqfLDFkJTVK3m3hLb7yYDZq1C95HyssoX5BCr4ZatwP7jEh3UnwW7AMnx5fxdrhNkGVknbVY5QmjJ6S2CmtztCCffFL"
+    bls12381g2_verkey = "mq4SKF1Ej1CA37G4gkSjKtUHnD8NU1ZVkuC4BPiuoxJXoenfkputxbjfS8dHhGHN3vfQwU1z9BdEuBqTjg3PuHAKgT3Q9XEJgRyZje4WGKMtRh9vzUbd8J23jbA7Je3oAe2"
+    bls12381g2_alg = "bls12381g2"
+
     async def asyncSetUp(self) -> None:
         self.profile = await create_test_profile()
         self.profile.context.injector.bind_instance(KeyTypes, KeyTypes())
@@ -32,6 +36,7 @@ async def test_key_creation(self):
                 [
                     (self.ed25519_alg, self.ed25519_multikey),
                     (self.p256_alg, self.p256_multikey),
+                    (self.bls12381g2_alg, self.bls12381g2_multikey),
                 ]
             ):
                 kid = f"did:web:example.com#key-0{i}"
@@ -62,6 +67,7 @@ async def test_key_transformations(self):
         for alg, multikey, verkey in [
             (self.ed25519_alg, self.ed25519_multikey, self.ed25519_verkey),
             (self.p256_alg, self.p256_multikey, self.p256_verkey),
+            (self.bls12381g2_alg, self.bls12381g2_multikey, self.bls12381g2_verkey),
         ]:
             assert multikey_to_verkey(multikey) == verkey
             assert verkey_to_multikey(verkey, alg=alg) == multikey