Merge remote-tracking branch 'benma/attest' into staging/ble

Author: benma

py/bitbox02/bitbox02/communication/bitbox_api_protocol.py

@@ -18,7 +18,6 @@
 import enum
 import sys
 import base64
-import binascii
 import hashlib
 import time
 from typing import Callable, Optional, Dict, Tuple, Union, Sequence
@@ -74,93 +73,126 @@ class HwwResponseCode:
 HARDENED = 0x80000000
 
 
-class AttestationPubkeyInfo(TypedDict):
-    # uncompressed secp256k1 pubkey serialization
-    pubkey: bytes
-    # if not None, a hex-encoded bootloader hashes (of the padded
-    # bootloader binary, i.e. the device bootloader area), for which
-    # this attestation pubkey is
-    accepted_bootloader_hash: Optional[bytes]
-
-
-ATTESTATION_PUBKEYS: Sequence[AttestationPubkeyInfo] = [
-    {
-        "pubkey": binascii.unhexlify(
-            "04074ff1273b36c24e80fe3d59e0e897a81732d3f8e9cd07e17e9fc06319cd16b"
-            "25cf74255674477b3ac9cbac2d12f0dc27a662681fcbc12955b0bccdcbbdcfd01"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "044c53a84f41fa7301b378bb3c260fc9b2ff1cbea7a78181279a8566797a736f1"
-            "2cea25fa2b1c27a844392fe9b37547dc6fbd00a2676b816e7d2d3562be2a0cbbd"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "04e9c8dc929796aac65af5084eb54dc1ee482d5e0b5c58e2c93f243c5b70b2152"
-            "3324bdb78d7395317da165ef1138826c3ca3c91ca95e6f490c340cf5508a4a3ec"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "04c2fb05889b9dff5a9fb22a59ee1d16bfc2863f0400ddcb69566e2abe8a15fa0"
-            "ba1240254ca45aa310d170e724e1310ce5f611cada76c12e3c24a926a390ca4be"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "04c4e82d6d1b91e7853eba96a871ad31fc62620b826b0b8acf815c03de31b792a"
-            "98e05bb34d3b9e0df1040eac485f03ff8bbbf7a857ef1cf2a49a60ac084efb88f"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "040526f5b8348a8d55e7b1cac043ce98c55bbdb3311b4d1bb2d654281edf8aeb2"
-            "1f018fb027a6b08e4ddc62c919e648690722d00c6f54c668c9bd8224a1d82423a"
-        ),
-        "accepted_bootloader_hash": binascii.unhexlify(
-            "e8fa0bd5fc80b86b9f1ea983664df33b27f6f95855d79fb43248ee4c3d3e6be6"
-        ),
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "0422491e19766bd96a56e3f2f3926a6c57b89209ff47bd10e523b223ff65ab9af"
-            "11c0a5f62c187514f2117ce772de90f9901ee122af78e69bbc4d29eec811be8ec"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "049f1b7180014b6de60d41f16a3c0a37b20146585e4884960249d30f3cd68c74d"
-            "04420d0cedef5719d6b1529b085ecd534fa6c1690be5eb1b3331bc57b5db224dc"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "04adaa011a4ced11310728abb64f09636267ce0b05782da6d3eeaf987cec7c64f"
-            "279ad55327184f9e5b4a1e53089b31bcc65032dad7205325f41ed3d9fdfba1f88"
-        ),
-        "accepted_bootloader_hash": None,
-    },
-    {
-        "pubkey": binascii.unhexlify(
-            "044a70e663d7fe5fe0d4cbbb752883e35222b8d7d7bffdaa8d591995d1252528a"
-            "4e9a3e4d5220d485021728b3cdad4fccc681a6ddeea8e2f7c55b4acde8d53573d"
-        ),
-        "accepted_bootloader_hash": None,
-    },
+# uncompressed secp256k1 pubkey serialization, hex-encoded.
+ATTESTATION_PUBKEYS: Sequence[str] = [
+    "04074ff1273b36c24e80fe3d59e0e897a81732d3f8e9cd07e17e9fc06319cd16b25cf74255674477b3ac9cbac2d12f0dc27a662681fcbc12955b0bccdcbbdcfd01",
+    "044c53a84f41fa7301b378bb3c260fc9b2ff1cbea7a78181279a8566797a736f12cea25fa2b1c27a844392fe9b37547dc6fbd00a2676b816e7d2d3562be2a0cbbd",
+    "04e9c8dc929796aac65af5084eb54dc1ee482d5e0b5c58e2c93f243c5b70b21523324bdb78d7395317da165ef1138826c3ca3c91ca95e6f490c340cf5508a4a3ec",
+    "04c2fb05889b9dff5a9fb22a59ee1d16bfc2863f0400ddcb69566e2abe8a15fa0ba1240254ca45aa310d170e724e1310ce5f611cada76c12e3c24a926a390ca4be",
+    "04c4e82d6d1b91e7853eba96a871ad31fc62620b826b0b8acf815c03de31b792a98e05bb34d3b9e0df1040eac485f03ff8bbbf7a857ef1cf2a49a60ac084efb88f",
+    "040526f5b8348a8d55e7b1cac043ce98c55bbdb3311b4d1bb2d654281edf8aeb21f018fb027a6b08e4ddc62c919e648690722d00c6f54c668c9bd8224a1d82423a",
+    "0422491e19766bd96a56e3f2f3926a6c57b89209ff47bd10e523b223ff65ab9af11c0a5f62c187514f2117ce772de90f9901ee122af78e69bbc4d29eec811be8ec",
+    "049f1b7180014b6de60d41f16a3c0a37b20146585e4884960249d30f3cd68c74d04420d0cedef5719d6b1529b085ecd534fa6c1690be5eb1b3331bc57b5db224dc",
+    "04adaa011a4ced11310728abb64f09636267ce0b05782da6d3eeaf987cec7c64f279ad55327184f9e5b4a1e53089b31bcc65032dad7205325f41ed3d9fdfba1f88",
+    "044a70e663d7fe5fe0d4cbbb752883e35222b8d7d7bffdaa8d591995d1252528a4e9a3e4d5220d485021728b3cdad4fccc681a6ddeea8e2f7c55b4acde8d53573d",
+    "04ef42d5c74254dd6afb36ec752068252ed6b6e231d019b0dfe32ee9ac2d5444471698e0ce7626e2f1f6266f42e343a20fd6fe2fd9f206e623c2eb6c1c9922465d",
+    "04438a5d3a6262e631ad7a59ae9ffa0ee73b68957c4b3ad46d5747cae81beb15beafd1feed9c50fbff7f005ae649181c987649e1b251db74a052fef0b6e99a8064",
+    "04d145a6ba3bf76d5db1b80dbeaef8c66a4eea215d1b6f7260a0b2b63fd30c3f4c3e92913a6ce272b36ff622fff64a67b5cf8ef5db645f403c2647d4c11d5f968e",
+    "04458f68edde1d059ef2ccc970938cd44f012da4a8556f35f5a4e1df87313c7adfcd4f22e77345e5cc900eb6dd48af9bcb42bebe3163a79b3a3a3d32c359b5c06d",
+    "0456bb82ddc84bd87d0d6dca27439dad6f0901518bdea2347c1c07e1a53a8480ec24b615af1d6cdb9344d8ea8b2103c9daa674742c260b1d2532acc07cb1b4fce6",
+    "04f9d9ab547dce5b4d1c4778dae1990746e9e1f9a02475b46f88d8d4cc901db348988be3a5b8466a89f5a55e75416912d4b109eed86298577a718c0e3a023b0bf2",
+    "040682f7a78d6290e6c59e9d1bde9cd665fa24232198385a10948906b473c59b160f95308ac8adf092276722d68f9db77d61df72587797ee8c3cf0df45ae19a0ba",
+    "0432b2b5f54365847dcd1a9c96abb041a3d6483e93049fc3440b7b46ef8bac8d397d042dd48bb9928de3f2e343a670792fe25f65e5ffcbbf0121c4a0a061e55cd3",
+    "043eef9f2af390dfb456800fc7673f1ac61baefa68bff84ccd36fdfe408f90205b865ddd2c6036ceb6260bd6e6b2f2b0a0ade9a60579f259bcb945ea5eced8bfe8",
+    "04bc9b0fee1e5e088c77608e6ce16313a96a5b725de2c77fb3504e8c6ecf54ba278837f6ecdeb5a537d89d0a655cdaface33ef7786b949533ea8cec90694b15840",
+    "046f8f4942d0ffea7078850917b850b96fac0d1010ff9ef1419e5e9a8fce94796ff1c451f64ec8e5fbb20bc1cb73fd5fdddf5c647883f3966a82ed3e816d8da862",
+    "04995f9c5d5f539e53cd106837ca3eba50626df5dd5e54ce3146477c57cd5918c0b83b30f3e469c8ee7c741cd7c6833e78eeab710dfb96360ce464905fbda8179e",
+    "049991c5db649d7cf37f0a1cae2b4f14461404e0286c0b86e3dd5462a18a3ec35f54e66865a8e88aab14f94cbd8778c3c79440c54e5eeb5f96ba097638017b71dc",
+    "0433b669b2346c99824e81352a254ef4688349f41570f531e031a9c51e901aa0d74dc1206e0bd41929a75e44ee3e842c9d746f93172f5d9e3dd7a22e79d0fbad1c",
+    "04d2b99da82c7da93db72b6e6ab52dad09bd71d661e6ff63f22170afb4599fd88456aa8f555d910c5d4cc5a8cffb38f0cd7ec514aeecf3af990dc3ea7ba9d0d1ff",
+    "043be5abaf680e97f416a66538f0196f9ac8a2efc4f5ddc73ba43b6b3c261216b10f08b4c8c37a63dea0d2fa05240408f6d3de6d9f730af2c4e890fe1256d134aa",
+    "04f9b88dcff16de9f4d0372e36dbf220cec95099041003ed4f3a894bc6ffd0e881ca45f3c5dd0518d14d98e7e377623f5c4d99f302ce482b0a1ca0c6f046f5d251",
+    "04564c4238efbaca156d159ec945b80b7979dce14c4a59d380b1fc242d3aa3de0ad4ddae7262a11169819913e4346cb89b1ddc427d2192abd8f6c5a2c850768ba1",
+    "0486fb44812e9284ac4843463021729f33da45f0b90e3947d642f84320fd1be68deb24989b48b0a8d5c2ce438693ec1405d2358198fa939ea1ecd52b0df1fbc498",
+    "04a4b9b7a03abd093543b2d8dddddead13be13e7529ce0202b5b29a8ac52d0cfabb97bae52301a8a0e4853f3220e69dd2a0abfce526fdc087e7e0463e6495f739f",
+    "04fb09aa6b917f136a221d299e4d021adbb309d4753f94fb502f4b6e87abeb475221180c3467762f8342a1edb55a871c016262c1a8526a025a9bb3035efbf1c566",
+    "04f7b1dfff6f5b91432c6fdc0f79d13017b95d03d12e8b688ac446f89f9e5749d056ea2ea32d4f43cf12b174e2f7dbbd35c86d99891fd15512dddc7813ce710d6a",
+    "04476ed4537511dd1f24588bfd74e3e34d0d4158d7042037abe6ad86e91beac3b29a4db33c3eeffeaf8e41c86996da2992a0a168bd7f8f6298a6f0c592046635dd",
+    "04e6a3ba1a4024d7f7a666af76c880f3285bad6e945416b06ba66c6ad2c9ba0344315136d4d2a398c9142ec205f844b896e2eeb2060a3ad1108879f811040902b7",
+    "04f6d29602c85fbc3af84f295face5b10e996520d19e8e3b95e71a56c30d6c868c38e11df16293c304ccb9cb6e0d4c7d9e7f5badd488e6747eaf88d0be221319fe",
+    "04517ad3854bf3b9fa52ff703bd6d0fefc61406a7cd606cff270fc8ea1233366e5592321a8bb4dbbaca4df3a80ad68ef9de92e245aae898616d0ababad5f2449a6",
+    "04e1d94a45345ff33512c63ed5a6bb2f3fb92cc1db15267389cad9e8ef70de3db522faad29ad06f2a73f174b12a23e49c272e673f28a710243bfa8adc2ffd12f1a",
+    "045570fa35433648d7a6e98274629c3dc565e3211331802baa64087d12a63c53488071a619dd0313993d423a65a2175baba1abdcd5df7186ed247a9eaceb8b74fd",
+    "0401fe456142c8fa3b15f7d381fc62b40dcc546d5786aaf5fd08d8b2963c90895096ce773dff54b41ef604192ba9dd48786319a4c53e22217200c20cf3fcd95d6b",
+    "04c552738db26ef0e89bed1be8ade4951e7734579f5c49954373e78ae5e613235835e7835255eb92b64dba9d52db768895d8890e1f60f95522127cbfdf501581a8",
+    "040366885c11552f8354a6d6d133c1d3a1d4486ac5b85d94733f583d494d39aa05f54bb0d47746bcc082ebdf7f317f33df32e517982a3e1454fbc4b776c012ce79",
+    "04fb246edb986718ac4e892c336fd3100cd225f389806042d9fdbff1ac84be110ee1b9cfa38c4bd7c7334c8b8d21b7d07e00a1b9910b6b103b8b83cf4f27b352b4",
+    "046003d369e24ce07356355c3bc0326856412b9d2259686e0f391b223305a7a3894b2cfe9285752865326d47fce223ea24d3c6a087fefd2a80f38041d6406da5c2",
+    "044481ac1f9fd76dc8d87d4df88944fcc974c8ef4a4283610454eaf67393c38bcc21459132d90d115d208afbdf4bf77d3dede3e904804339a7fce5e57f0ab1bc0b",
+    "04c7b2d16a898ba1233ff19a3bb1ce8c8956f2db8b42b0ed57bc1b1d249d1e2cb53a800a18050e44bb2d82d48066fc617dd81a0739dc71957a3daf6f22e30d5b39",
+    "046d3e716eb3580f5335d9d3869ea048c1b4c065817716f2edd2dcb8cefbe9f6d53fe3afd76d43ee48c4b4467fee60685a0afe555ce2b65a2a6a96768f05601bc4",
+    "044473a7c536402aa209b666acaa95f28379916cbaa6a2f4f03f544698e590e917678b102bfb08a8bb31a8d7ef4f82508373a42903d5bf4b267e4e0d285da81d75",
+    "0451e34fa15a57dfa8c1bed92d965a8e9ad58531f79851f7aca792f3ae55e83daed5ff4b9552bd9b49eefb6f1aca173cde9b9469e7df3194a089b8f4d833305398",
+    "0434aac7b381d143f4588e5018ec956d8dfcbca4b9e04d17e0c9abd96c5a88b562cc816c8ca24a0c50550df80e992801e2fc3427ae15ff5857083319686019d4b5",
+    "047560b4430a1fa56ff42e47fd5f4063f39e993a7af0f04d13a75d601ca42508ba11c3245362763fb0c7847002d364a4d7913052131c11c1c7056330c12e9c29aa",
+    "0408a651514bf9e992d297629be1f4c1ef7804760451bad13daf701fc3c662f2297fdd166cb8440c6d78527926d71664b1eb5a88ac5b75fd7a9aebfa30a2ac2db1",
+    "04b6be971ec9f51de953e9689a9d7df828f45459f78cbfbc6f9bdab8a1d5f7bf6305991207c2f3fc48695f113936eac5599130b3bd4bf3f8ed125888c106bf6675",
+    "04a7436fd434513ec3748e01dba2f1cc6406a945a0329cfd3e60fa04fc8196d21c83a8e34d688afb1a29f251ef29ea659849eac310c8bc38ec29edc23b40cd860e",
+    "041e432d24bed03c5cfddb38155e2df8e42482294423c79a0341f0b86073d91cea71ffc58bacaf08c11511461e000ecd6db33170ee99e1aca8aff89f68b7c5db31",
+    "045604b119b5d7ce91093a429c70a246842d9150390eaf5e98530fdd68ff0263051159d4baed1eacde5cce3064a061910348ae3e5dc88b9daef5417418b7fdb57d",
+    "04aa59b2506202e2112e9bb794cfe43aace1c303559332869e04a151a2b2dc70d382b9b156cfd5a710ff476b5e4744439e7763e076f7dd834ef21900d949798f93",
+    "0433f5b6c27f93489a98c3a109cae3da0ea86b93d75cf8871f3f78e9696b4045a7342ae38ac06359f710aa2c06a88821ac79672c2498fbec051e4f1525e8c9fae7",
+    "047cbbe361c84de6b9c9c809b12a584354780b12aa89787673cfc2ca22d48bb0eb43a8aac781d333b8b91956be82840985cc90fd9ba8443589661b6aa308478ec6",
+    "04768cdf5973c34f027abb68e86844eb981b3ddb5a5f11f8c079b04fe658afeccc8163cab7e97120ada6313a2c3007a948a1ea1b3d466106cf472a127974a971ce",
+    "041bc1b519a2a67f14c91bc8052cc3d94a7a2824d742abb1be65c7d86085ed0b15c678ff508b01add8bc5f24295f4bfbfb0126c3bbb05ba0bb596062ba37f86c43",
+    "04ec87da7c538369614ead4d3a3b359fa22468fac84a101623f2394eea10c8ab92b2f118951333a35311e11cffa2ecb9f7a9b9d5e1360efc636fc8b1be830c812b",
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+    "048bf5abf82e6fd10f3516f0586c0cf091941fd17411fda4333bbe8675c97f6395b5cf4e0b6c32c21005a75e3c4c950abd0c34fb8c8722d47cf17b3fb71fafb3dd",
+    "04e123e5639ae797edb389875534b223439c8b9400b32d799df3f2e3319c87a2bd527f0fbe7bed07186f78b591503abf453af5a0016984176764396ff47466616d",
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+    "04813b0d011e25ccea0a6c277d8032eaf7c4f055d89e8c4b53c1ada83554f41f0c864681c6b36112a9f47c6512e5033fbfac9c5caaad2bbca15baacbb092c07b6b",
+    "04a800befd176bc49d7bba6d2ec9807ee72dea039377f7b027a4aab09ecc12a0fafe80394d346a8bf1a3a4a2c7742f9fdb8814a3d01d36d9e1dc90340fb6aa7a4e",
+    "04fb15f204f7c47fa21bde4ff365938071ea402816048819bddedfca8264d020f0646ac5c0cf47df85794b4dd0a17b788bdd09d45582e8e6b9562a538769f2475d",
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 ]
 
-ATTESTATION_PUBKEYS_MAP: Dict[bytes, AttestationPubkeyInfo] = {
-    hashlib.sha256(val["pubkey"]).digest(): val for val in ATTESTATION_PUBKEYS
-}
+
+ATTESTATION_PUBKEYS_MAP: Dict[bytes, bytes] = {}
+for pubkey_hex in ATTESTATION_PUBKEYS:
+    pubkey = bytes.fromhex(pubkey_hex)
+    ATTESTATION_PUBKEYS_MAP[hashlib.sha256(pubkey).digest()] = pubkey
+
 
 OP_ATTESTATION = b"a"
 OP_UNLOCK = b"u"
@@ -605,14 +637,7 @@ def _perform_attestation(self) -> bool:
             # root pubkey could not be identified.
             return False
 
-        root_pubkey_info = ATTESTATION_PUBKEYS_MAP[root_pubkey_identifier]
-        root_pubkey_bytes_uncompressed = root_pubkey_info["pubkey"]
-        if (
-            root_pubkey_info["accepted_bootloader_hash"] is not None
-            and root_pubkey_info["accepted_bootloader_hash"] != bootloader_hash
-        ):
-            return False
-
+        root_pubkey_bytes_uncompressed = ATTESTATION_PUBKEYS_MAP[root_pubkey_identifier]
         root_pubkey = ecdsa.VerifyingKey.from_string(
             root_pubkey_bytes_uncompressed[1:], ecdsa.curves.SECP256k1
         )