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Added parameter to Objective-C CHIPDeviceController to accept PAA cer… (
#17035) * Added parameter to Objective-C CHIPDeviceController to accept PAA certificates from Objective-C client Fixes #14126 Change overview Added a new parameter to CHIPDeviceController that is an array of NSData PAA certificates. Created an Objective-C bridge for the AttestationTrustStore class. The PAA certificates provided by the client are passed to the default device attestation verifier. If the client passes a nil value for the parameter then the testing root store is used. Testing Used an Objective-C client to pass valid certificates to ensure device attestation procedure succeeded with an m5stack device. Passed in nil to ensure the device attestation procedure used the test PAA certificates. * Restyled by whitespace * Restyled by clang-format * Update src/darwin/Framework/CHIP/CHIPAttestationTrustStoreBridge.mm Co-authored-by: Boris Zbarsky <[email protected]> * Update src/darwin/Framework/CHIP/CHIPAttestationTrustStoreBridge.mm Co-authored-by: Boris Zbarsky <[email protected]> * Updated files: examples/chip-tool-darwin/commands/common/CHIPCommandBridge.mm src/darwin/CHIPTool/CHIPTool/Framework Helpers/DefaultsUtils.m src/darwin/Framework/CHIP/BUILD.gn src/darwin/Framework/CHIP/CHIPAttestationTrustStoreBridge.mm src/darwin/Framework/CHIP/CHIPDeviceController.h src/darwin/Framework/CHIP/CHIPDeviceController.mm * Restyled by gn Co-authored-by: Restyled.io <[email protected]> Co-authored-by: Justin Wood <[email protected]> Co-authored-by: Boris Zbarsky <[email protected]>
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36 changes: 36 additions & 0 deletions
36
src/darwin/Framework/CHIP/CHIPAttestationTrustStoreBridge.h
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| /** | ||
| * | ||
| * Copyright (c) 2022 Project CHIP Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| #import "CHIPError_Internal.h" | ||
| #include <credentials/attestation_verifier/DeviceAttestationVerifier.h> | ||
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| NS_ASSUME_NONNULL_BEGIN | ||
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| class CHIPAttestationTrustStoreBridge : public chip::Credentials::AttestationTrustStore { | ||
| public: | ||
| ~CHIPAttestationTrustStoreBridge() {}; | ||
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| void Init(NSArray<NSData *> * paaCerts); | ||
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| CHIP_ERROR GetProductAttestationAuthorityCert( | ||
| const chip::ByteSpan & skid, chip::MutableByteSpan & outPaaDerBuffer) const override; | ||
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| private: | ||
| NSArray<NSData *> * mPaaCerts; | ||
| }; | ||
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| NS_ASSUME_NONNULL_END |
45 changes: 45 additions & 0 deletions
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src/darwin/Framework/CHIP/CHIPAttestationTrustStoreBridge.mm
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| /** | ||
| * | ||
| * Copyright (c) 2022 Project CHIP Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| #import "CHIPAttestationTrustStoreBridge.h" | ||
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| static chip::ByteSpan asByteSpan(NSData * value) { return chip::ByteSpan(static_cast<const uint8_t *>(value.bytes), value.length); } | ||
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| void CHIPAttestationTrustStoreBridge::Init(NSArray<NSData *> * paaCerts) { mPaaCerts = paaCerts; } | ||
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| CHIP_ERROR CHIPAttestationTrustStoreBridge::GetProductAttestationAuthorityCert( | ||
| const chip::ByteSpan & skid, chip::MutableByteSpan & outPaaDerBuffer) const | ||
| { | ||
| VerifyOrReturnError(skid.size() == chip::Crypto::kSubjectKeyIdentifierLength, CHIP_ERROR_INVALID_ARGUMENT); | ||
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| size_t paaIdx; | ||
| chip::ByteSpan candidate; | ||
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| for (paaIdx = 0; paaIdx < mPaaCerts.count; ++paaIdx) { | ||
| uint8_t skidBuf[chip::Crypto::kSubjectKeyIdentifierLength] = { 0 }; | ||
| candidate = asByteSpan(mPaaCerts[paaIdx]); | ||
| chip::MutableByteSpan candidateSkidSpan { skidBuf }; | ||
| VerifyOrReturnError( | ||
| CHIP_NO_ERROR == chip::Crypto::ExtractSKIDFromX509Cert(candidate, candidateSkidSpan), CHIP_ERROR_INTERNAL); | ||
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| if (skid.data_equal(candidateSkidSpan)) { | ||
| // Found a match | ||
| return CopySpanToMutableSpan(candidate, outPaaDerBuffer); | ||
| } | ||
| } | ||
| return CHIP_ERROR_CA_CERT_NOT_FOUND; | ||
| } |
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