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EFR32: DeviceAttestationCredentialsProvider implemented.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,15 @@ | ||
| #ifndef MATTER_MFG_TOKENS_EFR32 | ||
| #define MATTER_MFG_TOKENS_EFR32 | ||
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| #define EFR32_CERTS_DAC_ID PSA_KEY_ID_USER_MIN + 1 | ||
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| #define CREATOR_MFG_MATTER_CD (USERDATA_TOKENS | 0x200) // 4 bytes 0x226 | ||
| #define CREATOR_MFG_MATTER_PAI (USERDATA_TOKENS | 0x444) // 4 bytes | ||
| #define CREATOR_MFG_MATTER_DAC (USERDATA_TOKENS | 0x614) // 4 bytes | ||
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| #define MFG_MATTER_CD_SIZE 541 | ||
| #define MFG_MATTER_PAI_SIZE 463 | ||
| #define MFG_MATTER_DAC_SIZE 492 | ||
| #define MFG_MATTER_DAC_KEY_ID PSA_KEY_ID_USER_MIN + 1 | ||
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| #endif // MATTER_MFG_TOKENS_EFR32 |
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * | ||
| * Copyright (c) 2021 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. | ||
| */ | ||
| #include <credentials/examples/DeviceAttestationCredsExample.h> | ||
| #include <crypto/CHIPCryptoPAL.h> | ||
| #include <lib/core/CHIPError.h> | ||
| #include <lib/support/CodeUtils.h> | ||
| #include <lib/support/Span.h> | ||
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| #include "efr32_certs.h" | ||
| #include "psa/crypto.h" | ||
| #include "sl_token_api.h" | ||
| #include "sl_token_manager.h" | ||
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| namespace chip { | ||
| namespace Credentials { | ||
| namespace Examples { | ||
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| namespace { | ||
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| class DeviceAttestationCredsImpl : public DeviceAttestationCredentialsProvider | ||
| { | ||
| public: | ||
| CHIP_ERROR GetCertificationDeclaration(MutableByteSpan & out_buffer) override | ||
| { | ||
| uint8_t cd_buf[MFG_MATTER_CD_SIZE]; | ||
| ByteSpan cd_span(cd_buf); | ||
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| int err = sl_token_get_data(CREATOR_MFG_MATTER_CD, 0, cd_buf, sizeof(cd_buf)); | ||
| ChipLogProgress(DeviceLayer, "~ GetCertificationDeclaration-1.2, size:%u, err:%d\r\n", sizeof(cd_buf), err); | ||
| VerifyOrReturnError(!err, CHIP_ERROR_INTERNAL); | ||
| ChipLogByteSpan(DeviceLayer, cd_span); | ||
| return CopySpanToMutableSpan(cd_span, out_buffer); | ||
| } | ||
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| CHIP_ERROR GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer) override | ||
| { | ||
| // TODO: We need a real example FirmwareInformation to be populated. | ||
| out_firmware_info_buffer.reduce_size(0); | ||
| return CHIP_NO_ERROR; | ||
| } | ||
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| CHIP_ERROR GetDeviceAttestationCert(MutableByteSpan & out_buffer) override | ||
| { | ||
| uint8_t cert_buf[MFG_MATTER_DAC_SIZE]; | ||
| ByteSpan cert_span(cert_buf); | ||
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| int err = sl_token_get_data(CREATOR_MFG_MATTER_DAC, 0, cert_buf, sizeof(cert_buf)); | ||
| ChipLogProgress(DeviceLayer, "~ GetDeviceAttestationCert, size:%u, err:%d\r\n", sizeof(cert_buf), err); | ||
| VerifyOrReturnError(!err, CHIP_ERROR_INTERNAL); | ||
| ChipLogByteSpan(DeviceLayer, cert_span); | ||
| return CopySpanToMutableSpan(cert_span, out_buffer); | ||
| } | ||
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| CHIP_ERROR GetProductAttestationIntermediateCert(MutableByteSpan & out_pai_buffer) override | ||
| { | ||
| uint8_t cert_buf[MFG_MATTER_PAI_SIZE]; | ||
| ByteSpan cert_span(cert_buf); | ||
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| int err = sl_token_get_data(CREATOR_MFG_MATTER_PAI, 0, cert_buf, sizeof(cert_buf)); | ||
| ChipLogProgress(DeviceLayer, "~ GetProductAttestationIntermediateCert, size:%u, err:%d\r\n", sizeof(cert_buf), err); | ||
| VerifyOrReturnError(!err, CHIP_ERROR_INTERNAL); | ||
| ChipLogByteSpan(DeviceLayer, cert_span); | ||
| return CopySpanToMutableSpan(cert_span, out_pai_buffer); | ||
| } | ||
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| CHIP_ERROR SignWithDeviceAttestationKey(const ByteSpan & digest_to_sign, MutableByteSpan & out_buffer) override | ||
| { | ||
| psa_key_id_t key_id = MFG_MATTER_DAC_KEY_ID; | ||
| uint8_t signature[chip::Crypto::kSHA256_Hash_Length] = { 0 }; | ||
| size_t signature_size = sizeof(signature); | ||
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| psa_status_t err = psa_sign_hash(key_id, PSA_ALG_ECDSA(PSA_ALG_SHA_256), digest_to_sign.data(), digest_to_sign.size(), | ||
| signature, signature_size, &signature_size); | ||
| VerifyOrReturnError(!err, CHIP_ERROR_INTERNAL); | ||
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| return CopySpanToMutableSpan(ByteSpan(signature, signature_size), out_buffer); | ||
| } | ||
| }; | ||
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| } // namespace | ||
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| DeviceAttestationCredentialsProvider * GetExampleDACProvider() | ||
| { | ||
| static DeviceAttestationCredsImpl dac_provider; | ||
| return &dac_provider; | ||
| } | ||
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| } // namespace Examples | ||
| } // namespace Credentials | ||
| } // namespace chip |
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