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Merge pull request #198 from joonhaengHeo/implement_android_device_at…
…testation Implement android device attestation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| * Copyright (c) 2024 Project CHIP Authors | ||
| * All rights reserved. | ||
| * | ||
| * 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. | ||
| * | ||
| */ | ||
|
|
||
| /** | ||
| * @file | ||
| * Implementation of JNI bridge for Device Attestation | ||
| * | ||
| */ | ||
| #include <lib/support/CHIPJNIError.h> | ||
| #include <lib/support/JniReferences.h> | ||
| #include <lib/support/JniTypeWrappers.h> | ||
| #include <lib/support/SafeInt.h> | ||
|
|
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| #include <credentials/CHIPCert.h> | ||
| #include <credentials/DeviceAttestationConstructor.h> | ||
| #include <credentials/attestation_verifier/DefaultDeviceAttestationVerifier.h> | ||
| #include <jni.h> | ||
|
|
||
| #define JNI_METHOD(RETURN, METHOD_NAME) \ | ||
| extern "C" JNIEXPORT RETURN JNICALL Java_chip_devicecontroller_DeviceAttestation_##METHOD_NAME | ||
|
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| void ThrowException(JNIEnv * env, CHIP_ERROR err); | ||
|
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| JNI_METHOD(jbyteArray, extractSkidFromPaaCert) | ||
| (JNIEnv * env, jclass clazz, jbyteArray paaCert) | ||
| { | ||
| uint32_t allocatedCertLength = chip::Credentials::kMaxCHIPCertLength; | ||
| chip::Platform::ScopedMemoryBuffer<uint8_t> outBuf; | ||
| jbyteArray outJbytes = nullptr; | ||
| chip::JniByteArray paaCertBytes(env, paaCert); | ||
|
|
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| CHIP_ERROR err = CHIP_NO_ERROR; | ||
| VerifyOrExit(outBuf.Alloc(allocatedCertLength), err = CHIP_ERROR_NO_MEMORY); | ||
| { | ||
| chip::MutableByteSpan outBytes(outBuf.Get(), allocatedCertLength); | ||
|
|
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| err = chip::Crypto::ExtractSKIDFromX509Cert(paaCertBytes.byteSpan(), outBytes); | ||
| SuccessOrExit(err); | ||
|
|
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| VerifyOrExit(chip::CanCastTo<uint32_t>(outBytes.size()), err = CHIP_ERROR_INTERNAL); | ||
|
|
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| err = | ||
| chip::JniReferences::GetInstance().N2J_ByteArray(env, outBytes.data(), static_cast<jsize>(outBytes.size()), outJbytes); | ||
| SuccessOrExit(err); | ||
| } | ||
|
|
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| exit: | ||
| if (err != CHIP_NO_ERROR) | ||
| { | ||
| ChipLogError(Controller, "Failed to extract skid frome X509 cert. Err = %" CHIP_ERROR_FORMAT, err.Format()); | ||
| ThrowException(env, err); | ||
| } | ||
|
|
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| return outJbytes; | ||
| } | ||
|
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| JNI_METHOD(jbyteArray, extractAkidFromPaiCert) | ||
| (JNIEnv * env, jclass clazz, jbyteArray paiCert) | ||
| { | ||
| uint32_t allocatedCertLength = chip::Credentials::kMaxCHIPCertLength; | ||
| chip::Platform::ScopedMemoryBuffer<uint8_t> outBuf; | ||
| jbyteArray outJbytes = nullptr; | ||
| chip::JniByteArray paiCertBytes(env, paiCert); | ||
|
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| CHIP_ERROR err = CHIP_NO_ERROR; | ||
| VerifyOrExit(outBuf.Alloc(allocatedCertLength), err = CHIP_ERROR_NO_MEMORY); | ||
| { | ||
| chip::MutableByteSpan outBytes(outBuf.Get(), allocatedCertLength); | ||
|
|
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| err = chip::Crypto::ExtractAKIDFromX509Cert(paiCertBytes.byteSpan(), outBytes); | ||
| SuccessOrExit(err); | ||
|
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| VerifyOrExit(chip::CanCastTo<uint32_t>(outBytes.size()), err = CHIP_ERROR_INTERNAL); | ||
|
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| err = | ||
| chip::JniReferences::GetInstance().N2J_ByteArray(env, outBytes.data(), static_cast<jsize>(outBytes.size()), outJbytes); | ||
| SuccessOrExit(err); | ||
| } | ||
|
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| exit: | ||
| if (err != CHIP_NO_ERROR) | ||
| { | ||
| ChipLogError(Controller, "Failed to extract akid frome X509 cert. Err = %" CHIP_ERROR_FORMAT, err.Format()); | ||
| ThrowException(env, err); | ||
| } | ||
|
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| return outJbytes; | ||
| } | ||
|
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| JNI_METHOD(void, validateAttestationInfo) | ||
| (JNIEnv * env, jclass clazz, jint vendorId, jint productId, jbyteArray paaCert, jbyteArray paiCert, jbyteArray dacCert, | ||
| jbyteArray attestationElements) | ||
| { | ||
| chip::Credentials::AttestationVerificationResult attestationError = chip::Credentials::AttestationVerificationResult::kSuccess; | ||
| CHIP_ERROR err = CHIP_NO_ERROR; | ||
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| VerifyOrExit(paaCert != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT); | ||
| VerifyOrExit(paiCert != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT); | ||
| VerifyOrExit(dacCert != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT); | ||
|
|
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| { | ||
| chip::JniByteArray paaCertBytes(env, paaCert); | ||
| chip::JniByteArray paiCertBytes(env, paiCert); | ||
| chip::JniByteArray dacCertBytes(env, dacCert); | ||
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| chip::Crypto::AttestationCertVidPid paaVidPid; | ||
| chip::Crypto::AttestationCertVidPid paiVidPid; | ||
| chip::Crypto::AttestationCertVidPid dacVidPid; | ||
|
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| uint8_t skidBuf[chip::Crypto::kAuthorityKeyIdentifierLength]; | ||
| chip::MutableByteSpan paaSKID(skidBuf); | ||
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| chip::Crypto::CertificateChainValidationResult chainValidationResult; | ||
|
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| err = chip::Crypto::VerifyAttestationCertificateFormat(paiCertBytes.byteSpan(), chip::Crypto::AttestationCertType::kPAI); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| ChipLogError(Controller, "Verify PAI Attestation Cert format Error! : %" CHIP_ERROR_FORMAT, err.Format())); | ||
|
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| err = chip::Crypto::VerifyAttestationCertificateFormat(dacCertBytes.byteSpan(), chip::Crypto::AttestationCertType::kDAC); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| ChipLogError(Controller, "Verify DAC Attestation Cert format Error! : %" CHIP_ERROR_FORMAT, err.Format())); | ||
|
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| err = chip::Crypto::ExtractVIDPIDFromX509Cert(paaCertBytes.byteSpan(), paaVidPid); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| ChipLogError(Controller, "Extract VID, PID from PAA Error! : %" CHIP_ERROR_FORMAT, err.Format())); | ||
|
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| err = chip::Crypto::ExtractVIDPIDFromX509Cert(paiCertBytes.byteSpan(), paiVidPid); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| ChipLogError(Controller, "Extract VID, PID from PAI Error! : %" CHIP_ERROR_FORMAT, err.Format())); | ||
|
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| err = chip::Crypto::ExtractVIDPIDFromX509Cert(dacCertBytes.byteSpan(), dacVidPid); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| ChipLogError(Controller, "Extract VID, PID from DAC Error! : %" CHIP_ERROR_FORMAT, err.Format())); | ||
|
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| if (paaVidPid.mVendorId.HasValue()) | ||
| { | ||
| VerifyOrExit(paaVidPid.mVendorId == paiVidPid.mVendorId, | ||
| attestationError = chip::Credentials::AttestationVerificationResult::kPaiVendorIdMismatch); | ||
| } | ||
|
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| VerifyOrExit(!paaVidPid.mProductId.HasValue(), | ||
| attestationError = chip::Credentials::AttestationVerificationResult::kPaaFormatInvalid); | ||
|
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| err = chip::Crypto::ValidateCertificateChain( | ||
| paaCertBytes.byteSpan().data(), paaCertBytes.byteSpan().size(), paiCertBytes.byteSpan().data(), | ||
| paiCertBytes.byteSpan().size(), dacCertBytes.byteSpan().data(), dacCertBytes.byteSpan().size(), chainValidationResult); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| attestationError = static_cast<chip::Credentials::AttestationVerificationResult>(chainValidationResult)); | ||
|
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| err = chip::Crypto::ExtractSKIDFromX509Cert(paaCertBytes.byteSpan(), paaSKID); | ||
| VerifyOrExit(err == CHIP_NO_ERROR, attestationError = chip::Credentials::AttestationVerificationResult::kPaaFormatInvalid); | ||
| VerifyOrExit(paaSKID.size() == chip::Crypto::kAuthorityKeyIdentifierLength, | ||
| attestationError = chip::Credentials::AttestationVerificationResult::kPaaFormatInvalid); | ||
| } | ||
|
|
||
| { | ||
| VerifyOrExit(attestationElements != nullptr, err = CHIP_ERROR_INVALID_ARGUMENT); | ||
|
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| chip::JniByteArray attestationElementsBytes(env, attestationElements); | ||
|
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| chip::ByteSpan certificationDeclarationSpan; | ||
| chip::ByteSpan attestationNonceSpan; | ||
| uint32_t timestampDeconstructed; | ||
| chip::ByteSpan firmwareInfoSpan; | ||
| chip::Credentials::DeviceAttestationVendorReservedDeconstructor vendorReserved; | ||
| chip::ByteSpan certificationDeclarationPayload; | ||
|
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| const chip::Credentials::AttestationTrustStore * testingRootStore = chip::Credentials::GetTestAttestationTrustStore(); | ||
| chip::Credentials::DeviceAttestationVerifier * dacVertifier = chip::Credentials::GetDefaultDACVerifier(testingRootStore); | ||
|
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| err = chip::Credentials::DeconstructAttestationElements(attestationElementsBytes.byteSpan(), certificationDeclarationSpan, | ||
| attestationNonceSpan, timestampDeconstructed, firmwareInfoSpan, | ||
| vendorReserved); | ||
|
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| VerifyOrExit(err == CHIP_NO_ERROR, | ||
| attestationError = chip::Credentials::AttestationVerificationResult::kAttestationElementsMalformed); | ||
|
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| attestationError = | ||
| dacVertifier->ValidateCertificationDeclarationSignature(certificationDeclarationSpan, certificationDeclarationPayload); | ||
| VerifyOrExit(attestationError == chip::Credentials::AttestationVerificationResult::kSuccess, err = CHIP_ERROR_INTERNAL); | ||
| } | ||
|
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| exit: | ||
| if (err == CHIP_NO_ERROR && attestationError != chip::Credentials::AttestationVerificationResult::kSuccess) | ||
| { | ||
| err = CHIP_ERROR_INTERNAL; | ||
| } | ||
|
|
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| if (err != CHIP_NO_ERROR) | ||
| { | ||
| ChipLogError(Controller, "Failed to validate Attestation Info. Err = %u, %" CHIP_ERROR_FORMAT, | ||
| static_cast<uint16_t>(attestationError), err.Format()); | ||
| ThrowException(env, err); | ||
| } | ||
| } | ||
|
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| void ThrowException(JNIEnv * env, CHIP_ERROR err) | ||
| { | ||
| jclass controllerExceptionCls; | ||
| CHIP_ERROR classRefErr = chip::JniReferences::GetInstance().GetLocalClassRef( | ||
| env, "chip/devicecontroller/ChipDeviceControllerException", controllerExceptionCls); | ||
|
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| if (classRefErr != CHIP_NO_ERROR) | ||
| { | ||
| ChipLogError(Controller, "Failed to GetLocalClassRef: %" CHIP_ERROR_FORMAT, classRefErr.Format()); | ||
| return; | ||
| } | ||
|
|
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| chip::JniReferences::GetInstance().ThrowError(env, controllerExceptionCls, err); | ||
| } |
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