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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 "DeviceAttestationSe05xCredsExample.h"
#include <CHIPCryptoPAL_se05x.h>
#include <credentials/examples/ExampleDACs.h>
#include <credentials/examples/ExamplePAI.h>
#include <crypto/CHIPCryptoPAL.h>
#include <lib/core/CHIPError.h>
#include <lib/support/Span.h>
/* Device attestation key ids */
#define DEV_ATTESTATION_KEY_SE05X_ID 0x7D300000
#define DEV_ATTESTATION_CERT_SE05X_ID 0x7D300001
extern CHIP_ERROR se05xGetCertificate(uint32_t keyId, uint8_t * buf, size_t * buflen);
namespace chip {
namespace Credentials {
namespace Examples {
namespace {
class ExampleSe05xDACProvider : public DeviceAttestationCredentialsProvider
{
public:
CHIP_ERROR GetCertificationDeclaration(MutableByteSpan & out_cd_buffer) override;
CHIP_ERROR GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer) override;
CHIP_ERROR GetDeviceAttestationCert(MutableByteSpan & out_dac_buffer) override;
CHIP_ERROR GetProductAttestationIntermediateCert(MutableByteSpan & out_pai_buffer) override;
CHIP_ERROR SignWithDeviceAttestationKey(const ByteSpan & message_to_sign, MutableByteSpan & out_signature_buffer) override;
};
CHIP_ERROR ExampleSe05xDACProvider::GetDeviceAttestationCert(MutableByteSpan & out_dac_buffer)
{
#if 0
return CopySpanToMutableSpan(DevelopmentCerts::kDacCert, out_dac_buffer);
#else
size_t buflen = out_dac_buffer.size();
ChipLogDetail(Crypto, "Get DA certificate from se05x");
ReturnErrorOnFailure(se05xGetCertificate(DEV_ATTESTATION_CERT_SE05X_ID, out_dac_buffer.data(), &buflen));
out_dac_buffer.reduce_size(buflen);
return CHIP_NO_ERROR;
#endif
}
CHIP_ERROR ExampleSe05xDACProvider::GetProductAttestationIntermediateCert(MutableByteSpan & out_pai_buffer)
{
return CopySpanToMutableSpan(ByteSpan(DevelopmentCerts::kPaiCert), out_pai_buffer);
}
CHIP_ERROR ExampleSe05xDACProvider::GetCertificationDeclaration(MutableByteSpan & out_cd_buffer)
{
//-> format_version = 1
//-> vendor_id = 0xFFF1
//-> product_id_array = [ 0x8000, 0x8001, 0x8002, 0x8003, 0x8004, 0x8005, 0x8006, 0x8007, 0x8008, 0x8009, 0x800A, 0x800B,
// 0x800C, 0x800D, 0x800E, 0x800F, 0x8010, 0x8011, 0x8012, 0x8013, 0x8014, 0x8015, 0x8016, 0x8017, 0x8018, 0x8019, 0x801A,
// 0x801B, 0x801C, 0x801D, 0x801E, 0x801F, 0x8020, 0x8021, 0x8022, 0x8023, 0x8024, 0x8025, 0x8026, 0x8027, 0x8028, 0x8029,
// 0x802A, 0x802B, 0x802C, 0x802D, 0x802E, 0x802F, 0x8030, 0x8031, 0x8032, 0x8033, 0x8034, 0x8035, 0x8036, 0x8037, 0x8038,
// 0x8039, 0x803A, 0x803B, 0x803C, 0x803D, 0x803E, 0x803F, 0x8040, 0x8041, 0x8042, 0x8043, 0x8044, 0x8045, 0x8046, 0x8047,
// 0x8048, 0x8049, 0x804A, 0x804B, 0x804C, 0x804D, 0x804E, 0x804F, 0x8050, 0x8051, 0x8052, 0x8053, 0x8054, 0x8055, 0x8056,
// 0x8057, 0x8058, 0x8059, 0x805A, 0x805B, 0x805C, 0x805D, 0x805E, 0x805F, 0x8060, 0x8061, 0x8062, 0x8063 ]
//-> device_type_id = 0x0016
//-> certificate_id = "ZIG20142ZB330003-24"
//-> security_level = 0
//-> security_information = 0
//-> version_number = 0x2694
//-> certification_type = 0
//-> dac_origin_vendor_id is not present
//-> dac_origin_product_id is not present
const uint8_t kCdForAllExamples[] = {
0x30, 0x82, 0x02, 0x19, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x02, 0xa0, 0x82, 0x02, 0x0a, 0x30,
0x82, 0x02, 0x06, 0x02, 0x01, 0x03, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02,
0x01, 0x30, 0x82, 0x01, 0x71, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01, 0xa0, 0x82, 0x01, 0x62,
0x04, 0x82, 0x01, 0x5e, 0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf1, 0xff, 0x36, 0x02, 0x05, 0x00, 0x80, 0x05, 0x01, 0x80,
0x05, 0x02, 0x80, 0x05, 0x03, 0x80, 0x05, 0x04, 0x80, 0x05, 0x05, 0x80, 0x05, 0x06, 0x80, 0x05, 0x07, 0x80, 0x05, 0x08,
0x80, 0x05, 0x09, 0x80, 0x05, 0x0a, 0x80, 0x05, 0x0b, 0x80, 0x05, 0x0c, 0x80, 0x05, 0x0d, 0x80, 0x05, 0x0e, 0x80, 0x05,
0x0f, 0x80, 0x05, 0x10, 0x80, 0x05, 0x11, 0x80, 0x05, 0x12, 0x80, 0x05, 0x13, 0x80, 0x05, 0x14, 0x80, 0x05, 0x15, 0x80,
0x05, 0x16, 0x80, 0x05, 0x17, 0x80, 0x05, 0x18, 0x80, 0x05, 0x19, 0x80, 0x05, 0x1a, 0x80, 0x05, 0x1b, 0x80, 0x05, 0x1c,
0x80, 0x05, 0x1d, 0x80, 0x05, 0x1e, 0x80, 0x05, 0x1f, 0x80, 0x05, 0x20, 0x80, 0x05, 0x21, 0x80, 0x05, 0x22, 0x80, 0x05,
0x23, 0x80, 0x05, 0x24, 0x80, 0x05, 0x25, 0x80, 0x05, 0x26, 0x80, 0x05, 0x27, 0x80, 0x05, 0x28, 0x80, 0x05, 0x29, 0x80,
0x05, 0x2a, 0x80, 0x05, 0x2b, 0x80, 0x05, 0x2c, 0x80, 0x05, 0x2d, 0x80, 0x05, 0x2e, 0x80, 0x05, 0x2f, 0x80, 0x05, 0x30,
0x80, 0x05, 0x31, 0x80, 0x05, 0x32, 0x80, 0x05, 0x33, 0x80, 0x05, 0x34, 0x80, 0x05, 0x35, 0x80, 0x05, 0x36, 0x80, 0x05,
0x37, 0x80, 0x05, 0x38, 0x80, 0x05, 0x39, 0x80, 0x05, 0x3a, 0x80, 0x05, 0x3b, 0x80, 0x05, 0x3c, 0x80, 0x05, 0x3d, 0x80,
0x05, 0x3e, 0x80, 0x05, 0x3f, 0x80, 0x05, 0x40, 0x80, 0x05, 0x41, 0x80, 0x05, 0x42, 0x80, 0x05, 0x43, 0x80, 0x05, 0x44,
0x80, 0x05, 0x45, 0x80, 0x05, 0x46, 0x80, 0x05, 0x47, 0x80, 0x05, 0x48, 0x80, 0x05, 0x49, 0x80, 0x05, 0x4a, 0x80, 0x05,
0x4b, 0x80, 0x05, 0x4c, 0x80, 0x05, 0x4d, 0x80, 0x05, 0x4e, 0x80, 0x05, 0x4f, 0x80, 0x05, 0x50, 0x80, 0x05, 0x51, 0x80,
0x05, 0x52, 0x80, 0x05, 0x53, 0x80, 0x05, 0x54, 0x80, 0x05, 0x55, 0x80, 0x05, 0x56, 0x80, 0x05, 0x57, 0x80, 0x05, 0x58,
0x80, 0x05, 0x59, 0x80, 0x05, 0x5a, 0x80, 0x05, 0x5b, 0x80, 0x05, 0x5c, 0x80, 0x05, 0x5d, 0x80, 0x05, 0x5e, 0x80, 0x05,
0x5f, 0x80, 0x05, 0x60, 0x80, 0x05, 0x61, 0x80, 0x05, 0x62, 0x80, 0x05, 0x63, 0x80, 0x18, 0x24, 0x03, 0x16, 0x2c, 0x04,
0x13, 0x5a, 0x49, 0x47, 0x32, 0x30, 0x31, 0x34, 0x32, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30, 0x33, 0x2d, 0x32, 0x34,
0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18, 0x31, 0x7d, 0x30, 0x7b, 0x02, 0x01,
0x03, 0x80, 0x14, 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96, 0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04,
0xf3, 0x71, 0x60, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x0a, 0x06, 0x08,
0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x04, 0x47, 0x30, 0x45, 0x02, 0x20, 0x24, 0xe5, 0xd1, 0xf4, 0x7a, 0x7d,
0x7b, 0x0d, 0x20, 0x6a, 0x26, 0xef, 0x69, 0x9b, 0x7c, 0x97, 0x57, 0xb7, 0x2d, 0x46, 0x90, 0x89, 0xde, 0x31, 0x92, 0xe6,
0x78, 0xc7, 0x45, 0xe7, 0xf6, 0x0c, 0x02, 0x21, 0x00, 0xf8, 0xaa, 0x2f, 0xa7, 0x11, 0xfc, 0xb7, 0x9b, 0x97, 0xe3, 0x97,
0xce, 0xda, 0x66, 0x7b, 0xae, 0x46, 0x4e, 0x2b, 0xd3, 0xff, 0xdf, 0xc3, 0xcc, 0xed, 0x7a, 0xa8, 0xca, 0x5f, 0x4c, 0x1a,
0x7c,
};
return CopySpanToMutableSpan(ByteSpan{ kCdForAllExamples }, out_cd_buffer);
}
CHIP_ERROR ExampleSe05xDACProvider::GetFirmwareInformation(MutableByteSpan & out_firmware_info_buffer)
{
// TODO: We need a real example FirmwareInformation to be populated.
out_firmware_info_buffer.reduce_size(0);
return CHIP_NO_ERROR;
}
CHIP_ERROR ExampleSe05xDACProvider::SignWithDeviceAttestationKey(const ByteSpan & message_to_sign,
MutableByteSpan & out_signature_buffer)
{
Crypto::P256ECDSASignature signature;
Crypto::P256Keypair keypair;
Crypto::P256SerializedKeypair serialized_keypair;
uint8_t magic_bytes[] = NXP_CRYPTO_KEY_MAGIC;
ChipLogDetail(Crypto, "Sign using DA key from se05x");
VerifyOrReturnError(!out_signature_buffer.empty(), CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(!message_to_sign.empty(), CHIP_ERROR_INVALID_ARGUMENT);
VerifyOrReturnError(out_signature_buffer.size() >= signature.Capacity(), CHIP_ERROR_BUFFER_TOO_SMALL);
// Add public key + reference private key (ref to key inside SE)
serialized_keypair.SetLength(Crypto::kP256_PublicKey_Length + Crypto::kP256_PrivateKey_Length);
memset(serialized_keypair.Bytes(), 0, Crypto::kP256_PublicKey_Length);
memcpy(serialized_keypair.Bytes() + Crypto::kP256_PublicKey_Length, magic_bytes, sizeof(magic_bytes));
*(serialized_keypair.Bytes() + Crypto::kP256_PublicKey_Length + sizeof(magic_bytes) + 0) =
(DEV_ATTESTATION_KEY_SE05X_ID & 0xFF000000) >> (8 * 3);
*(serialized_keypair.Bytes() + Crypto::kP256_PublicKey_Length + sizeof(magic_bytes) + 1) =
(DEV_ATTESTATION_KEY_SE05X_ID & 0x00FF0000) >> (8 * 2);
*(serialized_keypair.Bytes() + Crypto::kP256_PublicKey_Length + sizeof(magic_bytes) + 2) =
(DEV_ATTESTATION_KEY_SE05X_ID & 0x0000FF00) >> (8 * 1);
*(serialized_keypair.Bytes() + Crypto::kP256_PublicKey_Length + sizeof(magic_bytes) + 3) =
(DEV_ATTESTATION_KEY_SE05X_ID & 0x000000FF) >> (8 * 0);
ReturnErrorOnFailure(keypair.Deserialize(serialized_keypair));
ReturnErrorOnFailure(keypair.ECDSA_sign_msg(message_to_sign.data(), message_to_sign.size(), signature));
return CopySpanToMutableSpan(ByteSpan{ signature.ConstBytes(), signature.Length() }, out_signature_buffer);
}
} // namespace
DeviceAttestationCredentialsProvider * GetExampleSe05xDACProvider()
{
static ExampleSe05xDACProvider example_dac_provider;
return &example_dac_provider;
}
} // namespace Examples
} // namespace Credentials
} // namespace chip