// Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/webauthn/fake_recovery_key_store.h" #include #include "base/base64.h" #include "base/functional/bind.h" #include "base/functional/callback.h" #include "base/memory/weak_ptr.h" #include "base/sequence_checker.h" #include "base/strings/string_number_conversions.h" #include "base/strings/string_util.h" #include "components/trusted_vault/proto/recovery_key_store.pb.h" #include "components/trusted_vault/proto/vault.pb.h" #include "crypto/evp.h" #include "crypto/keypair.h" #include "crypto/sha2.h" #include "crypto/sign.h" #include "crypto/subtle_passkey.h" #include "device/fido/enclave/constants.h" #include "device/fido/enclave/enclave_authenticator.h" #include "net/cert/asn1_util.h" #include "net/cert/x509_util.h" #include "services/network/public/cpp/data_element.h" #include "services/network/public/cpp/resource_request.h" #include "third_party/boringssl/src/include/openssl/bn.h" #include "third_party/boringssl/src/include/openssl/ec.h" #include "third_party/boringssl/src/include/openssl/evp.h" namespace { // A 2048-bit RSA private key. It matches up with the testing root certificate // that is embedded in `recovery_key_store.rs`. static const uint8_t kRootRSAPrivateKey[] = { 0x30, 0x82, 0x04, 0xa3, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00, 0xc7, 0x95, 0x62, 0x74, 0xaf, 0x3f, 0x50, 0xb9, 0xa8, 0x4f, 0x55, 0x12, 0x0e, 0x5d, 0x1f, 0x89, 0x67, 0xdf, 0x55, 0x8c, 0x16, 0x75, 0x06, 0x1c, 0x33, 0x01, 0xa0, 0xdb, 0xa4, 0x88, 0x39, 0xdc, 0xca, 0x57, 0xf2, 0x6b, 0xd3, 0x0b, 0x22, 0x0d, 0x79, 0x2c, 0xc2, 0x4c, 0x1d, 0xf6, 0x0c, 0x32, 0xf6, 0x66, 0xca, 0x07, 0x89, 0x12, 0x17, 0x1e, 0x43, 0xbb, 0x16, 0xda, 0xe8, 0x2a, 0xec, 0x89, 0x25, 0x84, 0x88, 0xa5, 0x5d, 0xc1, 0x80, 0xb1, 0x9c, 0xab, 0xed, 0x00, 0x7d, 0xec, 0x9d, 0x4a, 0x49, 0xa4, 0x61, 0x48, 0x9e, 0xab, 0xb3, 0x78, 0x35, 0xce, 0x72, 0x80, 0x40, 0x20, 0x58, 0xca, 0x90, 0xbc, 0x24, 0x41, 0x01, 0x48, 0xaf, 0xc7, 0x69, 0x9d, 0x04, 0xa0, 0xa5, 0x20, 0xe8, 0xca, 0x16, 0xe5, 0x96, 0x6a, 0x36, 0x82, 0x2f, 0xc6, 0xe5, 0x0b, 0x53, 0x72, 0x3d, 0x89, 0x78, 0xc8, 0x27, 0xf7, 0xda, 0xe1, 0x6e, 0x07, 0xd6, 0xc1, 0xad, 0xaf, 0xa7, 0x27, 0xbb, 0x4b, 0x1f, 0x09, 0xdc, 0x41, 0x2d, 0x68, 0x21, 0xda, 0x85, 0x0b, 0xe1, 0x6f, 0x7b, 0x34, 0xa3, 0x45, 0x80, 0x43, 0x4e, 0x2a, 0xe7, 0x17, 0xd1, 0xde, 0xd7, 0xc0, 0xde, 0xf6, 0x0c, 0xa2, 0x50, 0x41, 0xd2, 0xf7, 0x7b, 0xb6, 0x81, 0x29, 0xb3, 0x80, 0xcc, 0xbf, 0x1e, 0x5a, 0xeb, 0xf3, 0x3c, 0xd2, 0xe6, 0x8d, 0xfc, 0x9a, 0x41, 0x23, 0xdc, 0xcb, 0x68, 0xff, 0x9e, 0x34, 0xe9, 0x25, 0xd7, 0xa7, 0x27, 0xc4, 0x68, 0x72, 0x38, 0x0e, 0xcc, 0x5b, 0x48, 0x40, 0xbb, 0x90, 0xa0, 0xfd, 0xd4, 0xc4, 0xea, 0xe9, 0x11, 0xd5, 0x6e, 0xda, 0x34, 0xea, 0x40, 0x2b, 0xcd, 0x21, 0x9b, 0x77, 0xdc, 0x05, 0xc2, 0xcf, 0x00, 0x05, 0xbc, 0x28, 0x5c, 0x59, 0xcf, 0xd9, 0x67, 0xcb, 0x30, 0x12, 0x77, 0x5e, 0xb6, 0xe9, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01, 0x00, 0x38, 0xfd, 0xa5, 0x41, 0xa0, 0x91, 0x39, 0xe1, 0xe9, 0xf7, 0xcd, 0x58, 0xfc, 0x95, 0x06, 0xde, 0x5b, 0xb4, 0xe0, 0x5e, 0xc2, 0x42, 0xe4, 0x5d, 0xc5, 0x0a, 0xdf, 0xfe, 0x18, 0x3b, 0x76, 0x1a, 0x60, 0x05, 0x41, 0x0a, 0x1d, 0x17, 0x7e, 0xbf, 0xce, 0x2c, 0x43, 0xc7, 0x2c, 0x7f, 0x07, 0xf8, 0xbd, 0x77, 0x98, 0x95, 0x12, 0x45, 0x02, 0x28, 0xf8, 0x3a, 0x42, 0x4a, 0x7c, 0x25, 0x55, 0xa9, 0xcb, 0xf6, 0xce, 0x76, 0x3a, 0x11, 0x79, 0x48, 0x3e, 0x6e, 0xb1, 0x9c, 0x84, 0x58, 0xbe, 0x89, 0x6a, 0x01, 0xf0, 0x6d, 0xa6, 0x31, 0x6d, 0x6c, 0x14, 0x21, 0x41, 0x7c, 0xf1, 0xd2, 0xca, 0xc7, 0xfd, 0x10, 0x5c, 0x61, 0xdb, 0x95, 0xff, 0xeb, 0xb7, 0x72, 0xc8, 0xd1, 0x7e, 0x95, 0xa9, 0x23, 0x9b, 0xea, 0x2f, 0x4b, 0x61, 0x09, 0x47, 0xcf, 0x49, 0xb4, 0x34, 0x3d, 0xd8, 0xe8, 0x9a, 0x7e, 0x3b, 0xdb, 0x13, 0x41, 0x45, 0xd3, 0xac, 0x16, 0x87, 0x41, 0x0b, 0xac, 0x64, 0xae, 0x0c, 0x43, 0x82, 0x60, 0x37, 0x78, 0xf0, 0xba, 0xdc, 0x2e, 0x29, 0xa8, 0xdd, 0x03, 0xfb, 0xe8, 0xe1, 0x6e, 0x43, 0xc0, 0x4b, 0x1e, 0x5a, 0x5c, 0x85, 0x1a, 0x1a, 0xc3, 0xf7, 0xd8, 0x19, 0x4d, 0xcc, 0xf9, 0xea, 0xaa, 0x97, 0x15, 0x73, 0xfe, 0xcf, 0x55, 0x9c, 0xb9, 0xdc, 0xc4, 0x67, 0x7b, 0xe0, 0x1f, 0x5f, 0xf0, 0x33, 0xe1, 0x76, 0x03, 0x18, 0xbe, 0xef, 0xcb, 0xc0, 0x10, 0x5e, 0xc9, 0xc5, 0x98, 0x19, 0xd8, 0x8a, 0xb6, 0x42, 0x84, 0xd1, 0x0a, 0x61, 0x13, 0x4f, 0x28, 0xe3, 0xbf, 0xcd, 0xba, 0x4d, 0x15, 0x19, 0x14, 0x91, 0x41, 0xf2, 0x62, 0x25, 0xd2, 0xc6, 0x7b, 0xf5, 0xfd, 0x05, 0xc4, 0xf4, 0xca, 0xae, 0xea, 0x56, 0x86, 0x4a, 0x69, 0x29, 0xfa, 0x9d, 0xa1, 0xcf, 0x2f, 0xe9, 0x01, 0x02, 0x81, 0x81, 0x00, 0xf1, 0x8f, 0x1d, 0xa4, 0xe7, 0x47, 0xbe, 0xee, 0x93, 0x2f, 0x49, 0xe1, 0x4f, 0x26, 0x1c, 0xd3, 0x4c, 0x26, 0x00, 0x91, 0x50, 0x4b, 0x5f, 0x42, 0x92, 0x2a, 0xca, 0x15, 0xac, 0x15, 0x67, 0xaf, 0x10, 0x52, 0x28, 0xce, 0xad, 0x06, 0xea, 0xbe, 0x94, 0x45, 0x81, 0x51, 0xde, 0x87, 0x56, 0x68, 0x05, 0x97, 0xe0, 0xe9, 0xba, 0x25, 0x57, 0x30, 0x8b, 0xb4, 0xb0, 0xb3, 0x04, 0x80, 0xff, 0xde, 0x23, 0x5c, 0x4c, 0xae, 0x89, 0x04, 0x6b, 0xb4, 0xe1, 0x4d, 0x57, 0xe3, 0xd6, 0x9a, 0x5f, 0xe3, 0x9c, 0x28, 0x30, 0x37, 0xa0, 0xdc, 0xa4, 0xbf, 0x66, 0x67, 0xa0, 0xb8, 0x32, 0x7f, 0xf4, 0x60, 0x6d, 0xc6, 0x03, 0x18, 0xb1, 0x57, 0x8a, 0xab, 0x8d, 0xb5, 0x9a, 0xbb, 0x91, 0xd5, 0xe3, 0x31, 0x3f, 0x0d, 0xbf, 0xfd, 0xe3, 0x1c, 0x37, 0xc2, 0xf0, 0xad, 0x1b, 0x60, 0x8f, 0x57, 0xdc, 0xb9, 0x02, 0x81, 0x81, 0x00, 0xd3, 0x83, 0xdd, 0x44, 0xf0, 0x2e, 0x06, 0x02, 0xd3, 0xb3, 0x9f, 0x6f, 0xf2, 0xe8, 0xf1, 0x3a, 0xa8, 0x75, 0xa7, 0x72, 0x7d, 0x59, 0xac, 0xdf, 0x41, 0x00, 0x09, 0xd5, 0xd2, 0x60, 0xbf, 0xeb, 0x6b, 0x4f, 0x5c, 0x62, 0xbb, 0x5c, 0xa0, 0x10, 0xfc, 0x46, 0xf4, 0xeb, 0x79, 0x1d, 0xe7, 0xf2, 0xf8, 0xc0, 0xbb, 0x8d, 0xc4, 0xd2, 0xf2, 0x2c, 0x1b, 0x34, 0xce, 0xa1, 0x96, 0x83, 0x89, 0x3c, 0xf7, 0x6c, 0xcb, 0xdc, 0xa3, 0x15, 0x7f, 0xfc, 0x82, 0xb3, 0xc0, 0x42, 0x60, 0x1f, 0x06, 0x2d, 0x3f, 0x4c, 0x67, 0x3b, 0x26, 0xa3, 0x2b, 0x53, 0xc7, 0x2b, 0x91, 0xd1, 0xf9, 0x5f, 0x20, 0x25, 0x49, 0xdd, 0x7c, 0xf8, 0x2c, 0x4a, 0x4b, 0x4a, 0x90, 0xf0, 0x8d, 0xd1, 0x1a, 0x8a, 0x8b, 0x91, 0xae, 0x42, 0x8a, 0xf7, 0x89, 0xd6, 0xca, 0xf4, 0xb9, 0xe0, 0x80, 0x27, 0xf3, 0x38, 0x73, 0xb1, 0x02, 0x81, 0x81, 0x00, 0xa8, 0x74, 0x3c, 0xa1, 0x0e, 0x24, 0xcb, 0x72, 0xc6, 0xb3, 0xb8, 0x9a, 0xe6, 0x3e, 0x56, 0xe5, 0xc7, 0x79, 0xcc, 0xf5, 0x89, 0x80, 0x36, 0x7b, 0x4f, 0x41, 0x85, 0xd2, 0x1d, 0x42, 0x84, 0x1e, 0xe2, 0x8b, 0xd9, 0x27, 0x60, 0x24, 0xad, 0xb9, 0x9f, 0xde, 0xe4, 0xb3, 0x3a, 0x33, 0x39, 0x3f, 0xab, 0x7e, 0xe1, 0xfb, 0x3c, 0xb3, 0xe3, 0x9c, 0xd8, 0x20, 0x77, 0x05, 0x30, 0x83, 0xe1, 0x6b, 0x81, 0x4f, 0x51, 0xae, 0x79, 0xa0, 0xda, 0x97, 0xb6, 0x72, 0xe0, 0x72, 0xe3, 0xea, 0x9e, 0x2a, 0x35, 0x71, 0x15, 0x47, 0x05, 0xe8, 0x38, 0xff, 0xbd, 0x23, 0x51, 0x42, 0x82, 0xfd, 0x16, 0x67, 0xd4, 0xc5, 0xbc, 0xcd, 0x10, 0x87, 0x53, 0x0e, 0x15, 0xf1, 0xea, 0x69, 0x19, 0xe7, 0x85, 0xdb, 0x86, 0xf4, 0x48, 0xca, 0x7e, 0x01, 0xe4, 0xa5, 0x0e, 0x80, 0x39, 0xd2, 0x59, 0xc4, 0x55, 0x09, 0x02, 0x81, 0x80, 0x77, 0xde, 0x92, 0x46, 0xa0, 0x6b, 0x24, 0xc2, 0xf3, 0x61, 0x27, 0xa9, 0x55, 0x1b, 0x88, 0xa2, 0x7a, 0x97, 0xfa, 0xe6, 0x9a, 0x7d, 0x78, 0xc8, 0x29, 0x59, 0x31, 0x39, 0xb9, 0x79, 0x55, 0x2a, 0xc0, 0xec, 0xff, 0xe9, 0x80, 0x4f, 0x54, 0xf3, 0x6b, 0x55, 0x77, 0x35, 0xff, 0xb4, 0xe0, 0x1f, 0xc5, 0xb3, 0xcc, 0x56, 0xe2, 0xc5, 0xbd, 0xb3, 0x1b, 0x54, 0x09, 0x0a, 0x70, 0x77, 0x69, 0x0e, 0x61, 0x16, 0x8a, 0x4e, 0x27, 0x2a, 0x67, 0x17, 0x1e, 0xa7, 0x69, 0xfc, 0xf3, 0xe6, 0x81, 0x24, 0xa1, 0x6b, 0xd6, 0x51, 0x22, 0x6b, 0x74, 0x81, 0x8d, 0x2d, 0x76, 0xfd, 0x6d, 0x7a, 0xe8, 0x87, 0xd9, 0x5d, 0xa9, 0x96, 0x27, 0xdb, 0x8e, 0xe1, 0xda, 0x54, 0x49, 0xba, 0xc8, 0x74, 0xdd, 0xf6, 0x18, 0xb0, 0xe3, 0x7a, 0xb7, 0xe6, 0x3f, 0xad, 0x03, 0xae, 0x64, 0x52, 0xbf, 0xb7, 0x2d, 0x71, 0x02, 0x81, 0x80, 0x77, 0xb6, 0x35, 0x51, 0x62, 0xe1, 0x44, 0x55, 0x78, 0x87, 0x58, 0x38, 0xfd, 0xf1, 0xac, 0xb7, 0xaf, 0xc0, 0xd0, 0x8f, 0x17, 0xdd, 0x9d, 0xec, 0x05, 0x9e, 0x7c, 0xfb, 0xab, 0x5e, 0xa5, 0x63, 0xa9, 0x03, 0x8c, 0x55, 0x3e, 0x88, 0x89, 0x29, 0xba, 0x7e, 0x9b, 0x98, 0x58, 0x74, 0x9d, 0x0f, 0xdf, 0xc1, 0xb9, 0xad, 0xcb, 0x27, 0x4e, 0xec, 0xb9, 0x5f, 0x6c, 0xc9, 0x46, 0x0e, 0xc3, 0x6c, 0x32, 0x5e, 0xe9, 0x42, 0xbf, 0x6b, 0xab, 0xd2, 0x8f, 0x78, 0x78, 0x7d, 0x28, 0x63, 0xbe, 0x2c, 0xba, 0x32, 0x58, 0x42, 0xd6, 0xe7, 0x7d, 0xf4, 0xd7, 0x52, 0x24, 0xf4, 0xfa, 0x98, 0x00, 0x40, 0x95, 0x55, 0x80, 0x36, 0xc2, 0x42, 0x3e, 0x4a, 0xed, 0x46, 0xe7, 0xf6, 0x46, 0xb7, 0xc2, 0x15, 0xba, 0x65, 0x2e, 0x12, 0x9e, 0x8b, 0x73, 0x08, 0xb0, 0xae, 0xd0, 0x6d, 0x9b, 0x9d, 0x40, 0x5d, }; // This is a 2048-bit RSA private key that exists just to avoiding doing // slow RSA key generation during tests. It can be changed at any time. static const uint8_t kSigRSAPrivateKey[] = { 0x30, 0x82, 0x04, 0xa3, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00, 0xc2, 0xce, 0x06, 0x23, 0xc3, 0x04, 0x5d, 0xe4, 0x6d, 0x03, 0x82, 0x2c, 0x3a, 0x7f, 0x8d, 0xef, 0x94, 0xa9, 0x26, 0xca, 0x0e, 0x5f, 0xca, 0xbf, 0x04, 0x2a, 0x22, 0x35, 0x74, 0xf2, 0xd0, 0x54, 0x04, 0x3e, 0x32, 0x15, 0x2a, 0xfd, 0x43, 0x1c, 0x71, 0x6b, 0x7d, 0xd3, 0x9b, 0x93, 0xac, 0x72, 0xfa, 0x72, 0x07, 0x11, 0x37, 0xe0, 0xd7, 0xc6, 0xfc, 0xf8, 0xa6, 0x6f, 0xa9, 0x03, 0x94, 0xed, 0xdc, 0xb0, 0x53, 0xfb, 0xc9, 0xc1, 0xd8, 0x57, 0x03, 0x3f, 0x45, 0x04, 0x3a, 0x67, 0x5c, 0x79, 0xdc, 0x0a, 0x11, 0x3e, 0x7a, 0xb5, 0xd5, 0xf2, 0xc3, 0xe0, 0x82, 0x4a, 0x89, 0xe9, 0x03, 0xe9, 0x7e, 0x4d, 0xd1, 0xd0, 0x75, 0x5c, 0xe1, 0x2c, 0x22, 0x23, 0x3a, 0x8b, 0x49, 0x0e, 0xb9, 0x4e, 0xd1, 0xd2, 0xb0, 0x2f, 0xa8, 0x95, 0xcb, 0x49, 0xd1, 0x03, 0x46, 0x9a, 0xf7, 0xca, 0x76, 0x59, 0x69, 0x74, 0xe4, 0xf6, 0xbe, 0x6d, 0x3c, 0x7f, 0xd0, 0x73, 0xa9, 0x94, 0x1e, 0xf6, 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0x4b, 0x7c, 0x50, 0xe1, 0x1c, 0xed, 0x23, 0x85, 0xdc, 0x88, 0xdd, 0x60, 0x77, 0x27, 0xc9, 0x5e, 0x4c, 0xb4, 0x07, 0x9d, 0x18, 0xab, 0x8f, 0x52, 0x38, 0x37, 0x71, 0xf7, 0x7a, 0x85, 0x93, 0x5f, 0xe1, 0xe9, 0x44, 0x5a, 0xf9, 0xc1, 0x45, 0xc2, 0xc4, }; // kTestTime is the fake time at which the test enclave service runs at. // This value also appears in // //third_party/cloud_authenticator/test/local_service/src/main.rs. constexpr uint32_t kTestTime = 1707344402; // Load an RSA private key from one of the embedded bytestrings, above. crypto::keypair::PrivateKey GetRSAKey(base::span der) { std::optional key = crypto::keypair::PrivateKey::FromRSAPrivateKey(der); CHECK(key); return *key; } // Generate a random P-256 key. crypto::keypair::PrivateKey NewECKey() { return crypto::keypair::PrivateKey::GenerateEcP256(); } std::vector GetPublicKeyBytes(const crypto::keypair::PrivateKey& key) { return crypto::keypair::PublicKey::FromPrivateKey(key) .ToUncompressedX962Point(); } class FakeRecoveryKeyStoreImpl : public FakeRecoveryKeyStore { public: FakeRecoveryKeyStoreImpl() : root_key_(GetRSAKey(kRootRSAPrivateKey)), sig_key_(GetRSAKey(kSigRSAPrivateKey)) { RegenerateKeys(); } ~FakeRecoveryKeyStoreImpl() override = default; base::RepeatingCallback GetCallback() override { DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); return base::BindRepeating( [](base::WeakPtr impl, const network::ResourceRequest& request) -> MaybeResponse { // Passing a WeakPtr into BindRepeating is only supported if the // function returns void. Thus the WeakPtr is handled directly here. if (!impl) { return std::nullopt; } return impl->OnRequest(request); }, weak_ptr_factory_.GetWeakPtr()); } base::span vaults() const override { return vaults_; } void set_cert_xml_url(std::string url) override { cert_xml_url_override_ = std::move(url); } void set_sig_xml_url(std::string url) override { sig_xml_url_override_ = std::move(url); } void break_cert_xml_file() override { break_cert_xml_file_ = true; } void break_sig_xml_file() override { break_sig_xml_file_ = true; } void DowngradeCohort() override { --recovery_key_store_serial_number_; RegenerateKeys(); } void UpgradeCohort() override { ++recovery_key_store_serial_number_; RegenerateKeys(); } int recovery_key_store_serial_number() override { return recovery_key_store_serial_number_; } std::array EndpointPrivateKeyFor( base::span public_key_bytes) const override { for (const auto& endpoint_key : endpoint_keys_) { if (GetPublicKeyBytes(endpoint_key) != public_key_bytes) { continue; } std::array result; CHECK(BN_bn2bin_padded( result.data(), result.size(), EC_KEY_get0_private_key(EVP_PKEY_get0_EC_KEY(endpoint_key.key())))); return result; } NOTREACHED() << "Could not find public key"; } std::vector CurrentEndpointPublicKeyBytes() const override { return GetPublicKeyBytes(endpoint_keys_.back()); } private: void RegenerateKeys() { endpoint_keys_.push_back(NewECKey()); // To avoid expiration issues, the test enclave runs at a fixed time // (`kTestTime`). Certificates are generated to be valid for a week before // and after that point. const base::Time not_before = base::Time::FromTimeT(kTestTime - 7 * 86400); const base::Time not_after = base::Time::FromTimeT(kTestTime + 7 * 86400); // This code was used to generate the root certificate that is included // in `recovery_key_store.rs`. #if 0 static const uint8_t kBasicConstraints[] = {0x55, 0x1d, 0x13}; static const uint8_t kIsCA[] = {0x30, 0x03, 0x01, 0x01, 0xff}; std::string root_cert; CHECK(net::x509_util::CreateSelfSignedCert( endpoint_keys_.back().key(), net::x509_util::DIGEST_SHA256, "CN=Root", /*serial_number=*/1, not_before, not_after, {net::x509_util::Extension(kBasicConstraints, /*critical=*/true, kIsCA)}, &root_cert)); const std::string root_cert_hex = base::HexEncode(root_cert); write(1, root_cert_hex.data(), root_cert_hex.size()); write(1, "\n", 1); #endif CHECK(net::x509_util::CreateCert( sig_key_.key(), net::x509_util::DIGEST_SHA256, "CN=Sig", /*serial_number=*/2, not_before, not_after, /*extension_specs=*/{}, "CN=Root", root_key_.key(), &sig_cert_der_)); CHECK(net::x509_util::CreateCert( endpoint_keys_.back().key(), net::x509_util::DIGEST_SHA256, "CN=Endpoint", /*serial_number=*/3, not_before, not_after, /*extension_specs=*/{}, "CN=Root", root_key_.key(), &endpoint_cert_der_)); certs_xml_ = base::ReplaceStringPlaceholders( R"( $3 $1 2592000 1 TQudrujnu1I9bdoDaYxGQYuRN/8SwTLjdk6vzYTOkIU= $2 )", {base::NumberToString(kTestTime), base::Base64Encode(endpoint_cert_der_), base::NumberToString(recovery_key_store_serial_number_)}, /*offsets=*/nullptr); const std::vector sig = crypto::sign::Sign(crypto::sign::RSA_PKCS1_SHA256, sig_key_, base::as_byte_span(certs_xml_)); sig_xml_ = base::ReplaceStringPlaceholders( R"( true $1 $2 )", {base::Base64Encode(sig_cert_der_), base::Base64Encode(sig)}, /*offsets=*/nullptr); } MaybeResponse OnRequest(const network::ResourceRequest& request) { DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); std::string cert_xml_url = cert_xml_url_override_; if (cert_xml_url.empty()) { cert_xml_url = device::enclave::kCertXmlUrlFeature.Get(); } if (request.url == cert_xml_url) { if (break_cert_xml_file_) { return std::make_pair(net::HTTP_NOT_FOUND, ""); } return std::make_pair(net::HTTP_OK, certs_xml_); } std::string sig_xml_url = sig_xml_url_override_; if (sig_xml_url.empty()) { sig_xml_url = device::enclave::kSigXmlUrlFeature.Get(); } if (request.url == sig_xml_url) { if (break_sig_xml_file_) { return std::make_pair(net::HTTP_NOT_FOUND, ""); } return std::make_pair(net::HTTP_OK, sig_xml_); } if (request.url == std::string(device::enclave::kRecoveryKeyStoreURL) + "?alt=proto") { return ProcessVaultUpdate(request); } return std::nullopt; } MaybeResponse ProcessVaultUpdate( const network::ResourceRequest& resource_request) { const std::vector* const elements = resource_request.request_body->elements(); CHECK_EQ(elements->size(), 1u); CHECK_EQ(elements->at(0).type(), network::DataElement::Tag::kBytes); const std::string_view body = elements->at(0).As().AsStringPiece(); trusted_vault_pb::Vault request; CHECK(request.ParseFromArray(body.data(), body.size())); CHECK(!request.vault_parameters().vault_handle().empty()); CHECK_EQ(request.vault_parameters().vault_handle()[0], 3 /* GPM PIN */); auto existing = std::ranges::find_if( vaults_, [&request](const auto& candidate) -> bool { const auto& candidate_params = candidate.vault_parameters(); const auto& request_params = request.vault_parameters(); return candidate_params.counter_id() == request_params.counter_id() && candidate_params.vault_handle() == request_params.vault_handle(); }); if (existing != vaults_.end()) { *existing = std::move(request); } else { vaults_.emplace_back(std::move(request)); } trusted_vault_pb::Vault response; response.mutable_vault_parameters()->set_vault_handle("test vault handle"); return std::make_pair(net::HTTP_OK, response.SerializeAsString()); } crypto::keypair::PrivateKey root_key_; crypto::keypair::PrivateKey sig_key_; std::vector endpoint_keys_; std::string sig_cert_der_; std::string endpoint_cert_der_; std::string certs_xml_; std::string sig_xml_; std::vector vaults_; std::string cert_xml_url_override_; std::string sig_xml_url_override_; bool break_cert_xml_file_ = false; bool break_sig_xml_file_ = false; int recovery_key_store_serial_number_ = 1; SEQUENCE_CHECKER(sequence_checker_); base::WeakPtrFactory weak_ptr_factory_{this}; }; } // namespace FakeRecoveryKeyStore::~FakeRecoveryKeyStore() = default; // static std::unique_ptr FakeRecoveryKeyStore::New() { return std::make_unique(); }