cast-auth provisioning and signing service
Bug: 233357413
Change-Id: If1b5c6d9f5be4db0bd8fe93e98032e3202b54973
diff --git a/app/cast_auth_impl.cc b/app/cast_auth_impl.cc
new file mode 100644
index 0000000..1383b6b
--- /dev/null
+++ b/app/cast_auth_impl.cc
@@ -0,0 +1,227 @@
+#include "cast_auth_impl.h"
+
+#include <lib/storage/storage.h>
+#include <lib/system_state/system_state.h>
+#include <openssl/base.h>
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/rsa.h>
+#include <openssl/x509.h>
+#define TLOG_TAG "cast-auth-trusty"
+#include <trusty_ipc.h>
+#include <trusty_log.h>
+#include <uapi/err.h>
+
+#include "lib/keybox/client/keybox.h"
+
+static const char *kKeyPath = "cast_auth_key";
+const int RSA_2048_SIZE_BYTES = 256;
+const int UNWRAPPED_KEY_MAX_BYTES = 1200;
+const int WRAPPING_MAX_BYTES = 1024;
+const int WRAPPED_KEY_MAX_BYTES = UNWRAPPED_KEY_MAX_BYTES + WRAPPING_MAX_BYTES;
+const int PAYLOAD_MAX_BYTES = WRAPPED_KEY_MAX_BYTES;
+
+bool is_plaintext_rsa_2048_private_key(
+ const ::trusty::aidl::Payload &req_payload) {
+ bssl::UniquePtr<BIO> bio(
+ BIO_new_mem_buf(req_payload.data(), req_payload.size()));
+ if (!bio) {
+ TLOGE(
+ "is_plaintext_rsa_2048_private_key: failed to allocate memory for the "
+ "device key\n");
+ return ERR_NO_MEMORY;
+ }
+ bssl::UniquePtr<RSA> rsa(d2i_RSAPrivateKey_bio(bio.get(), NULL));
+ return rsa && RSA_size(rsa.get()) == RSA_2048_SIZE_BYTES;
+}
+
+class StorageSessionHandle {
+public:
+ StorageSessionHandle(const char *type) : mSession(STORAGE_INVALID_SESSION) {
+ mError = storage_open_session(&mSession, type);
+ }
+ ~StorageSessionHandle() {
+ storage_close_session(mSession);
+ mSession = STORAGE_INVALID_SESSION;
+ }
+ bool valid() { return mSession != STORAGE_INVALID_SESSION; }
+ storage_session_t get() { return mSession; }
+ int error() { return mError; }
+
+private:
+ storage_session_t mSession;
+ int mError;
+};
+
+CastAuthImpl::CastAuthImpl() : BnCastAuth(PORT, &kAcl, PAYLOAD_MAX_BYTES) {}
+
+int CastAuthImpl::ProvisionKey(const ::trusty::aidl::Payload &req_payload) {
+ uint8_t unwrapped[UNWRAPPED_KEY_MAX_BYTES];
+ size_t unwrapped_size = sizeof(unwrapped);
+ if (!system_state_provisioning_allowed()) {
+ TLOGE("CastAuthImpl::ProvisionKey: provisioning not allowed\n");
+ return ERR_BAD_STATE;
+ }
+ int rc = NO_ERROR;
+ if (is_plaintext_rsa_2048_private_key(req_payload)) {
+ if (req_payload.size() > UNWRAPPED_KEY_MAX_BYTES)
+ rc = ERR_NOT_ENOUGH_BUFFER;
+ else {
+ unwrapped_size = req_payload.size();
+ memcpy(unwrapped, req_payload.data(), unwrapped_size);
+ }
+ } else {
+ rc = keybox_unwrap(req_payload.data(), req_payload.size(), unwrapped,
+ unwrapped_size, &unwrapped_size);
+ }
+ if (rc != NO_ERROR) {
+ TLOGE("CastAuthImpl::ProvisionKey: failed to unwrap key: %d\n", rc);
+ return rc;
+ }
+ bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(unwrapped, unwrapped_size));
+ if (!bio) {
+ TLOGE("CastAuthImpl::ProvisionKey: failed to allocate memory for the "
+ "device key\n");
+ return ERR_NO_MEMORY;
+ }
+ bssl::UniquePtr<RSA> rsa(d2i_RSAPrivateKey_bio(bio.get(), NULL));
+ if (!rsa || RSA_size(rsa.get()) != RSA_2048_SIZE_BYTES) {
+ TLOGE("CastAuthImpl::ProvisionKey: failed to decode device key\n");
+ return ERR_NOT_VALID;
+ }
+ return SaveKey(unwrapped, unwrapped_size);
+}
+
+int CastAuthImpl::SignHash(const ::trusty::aidl::Payload &req_payload,
+ ::trusty::aidl::Payload *resp_payload) {
+ uint8_t key[UNWRAPPED_KEY_MAX_BYTES];
+ size_t key_size = sizeof(key);
+ int rc = LoadKey(key, &key_size);
+ if (rc != NO_ERROR) {
+ TLOGE("CastAuthImpl::SignHash: failed to load device key: %d\n", rc);
+ return rc;
+ }
+ bssl::UniquePtr<BIO> bio(BIO_new_mem_buf(key, key_size));
+ if (!bio) {
+ TLOGE("CastAuthImpl::SignHash: failed to allocate memory for the device "
+ "key\n");
+ return ERR_NO_MEMORY;
+ }
+ bssl::UniquePtr<RSA> rsa(d2i_RSAPrivateKey_bio(bio.get(), NULL));
+ if (!rsa) {
+ TLOGE("CastAuthImpl::SignHash: failed to decode device key\n");
+ return ERR_GENERIC;
+ }
+ if (!RSA_check_key(rsa.get())) {
+ TLOGE("CastAuthImpl::SignHash: RSA key failed check\n");
+ return ERR_GENERIC;
+ }
+ size_t expected_size = (size_t)RSA_size(rsa.get());
+ if (resp_payload->size() < expected_size) {
+ TLOGE("CastAuthImpl::SignHash: response buffer too small\n");
+ return ERR_NOT_ENOUGH_BUFFER;
+ }
+ resp_payload->resize(expected_size);
+ rc = RSA_private_encrypt(req_payload.size(), req_payload.data(),
+ resp_payload->data(), rsa.get(), RSA_PKCS1_PADDING);
+ if (rc != (int)expected_size) {
+ TLOGE("CastAuthImpl::SignHash: RSA_private_encrypt %d \n", rc);
+ return ERR_GENERIC;
+ }
+ return NO_ERROR;
+}
+
+int CastAuthImpl::SaveKey(const uint8_t *key, size_t length) {
+ if (key == NULL || !length) {
+ TLOGE("CastAuthImpl::SaveKey: no keybox provided\n");
+ return ERR_GENERIC;
+ }
+ StorageSessionHandle session(STORAGE_CLIENT_TDP_PORT);
+ if (!session.valid()) {
+ TLOGE("CastAuthImpl::SaveKey: couldn't open storage session\n");
+ return session.error();
+ }
+ file_handle_t handle;
+ int rc = storage_open_file(
+ session.get(), &handle, kKeyPath,
+ STORAGE_FILE_OPEN_CREATE | STORAGE_FILE_OPEN_TRUNCATE, 0);
+ if (rc < 0) {
+ TLOGE("CastAuthImpl::SaveKey: failed to open key file: %d\n", rc);
+ return rc;
+ }
+ rc = storage_write(handle, 0, key, length, STORAGE_OP_COMPLETE);
+ storage_close_file(handle);
+ if (rc < 0) {
+ TLOGE("CastAuthImpl::SaveKey: failed to write key: %d\n", rc);
+ return rc;
+ }
+ return NO_ERROR;
+}
+
+int CastAuthImpl::LoadKey(uint8_t *key, size_t *length) {
+ if (key == NULL || length == NULL) {
+ TLOGE("CastAuthImpl::LoadKey: invalid parameters\n");
+ return ERR_INVALID_ARGS;
+ }
+ StorageSessionHandle session(STORAGE_CLIENT_TDP_PORT);
+ if (!session.valid()) {
+ TLOGE("CastAuthImpl::LoadKey: couldn't open storage session\n");
+ return session.error();
+ }
+
+ file_handle_t handle;
+ int rc = storage_open_file(session.get(), &handle, kKeyPath, 0, 0);
+ if (rc < 0) {
+ TLOGE("CastAuthImpl::LoadKey: failed to open key file: %d\n", rc);
+ return rc;
+ }
+ storage_off_t keysize;
+ rc = storage_get_file_size(handle, &keysize);
+ if (rc < 0) {
+ TLOGE("CastAuthImpl::LoadKey: couldn't get file size: %d\n", rc);
+ storage_close_file(handle);
+ return rc;
+ }
+
+ if (*length < keysize) {
+ TLOGE("CastAuthImpl::LoadKey: output buffer too small, "
+ "should be at least %zu bytes\n",
+ (size_t)keysize);
+ storage_close_file(handle);
+ *length = keysize;
+ return ERR_NOT_ENOUGH_BUFFER;
+ }
+
+ rc = storage_read(handle, 0, key, keysize);
+ storage_close_file(handle);
+ if (rc < 0) {
+ TLOGE("CastAuthImpl::LoadKey: error reading key: %d\n", rc);
+ return rc;
+ }
+ if ((size_t)rc != keysize) {
+ TLOGE("CastAuthImpl::LoadKey: error reading key - size (%d) not matching "
+ "keysize (%zu)\n",
+ rc, (size_t)keysize);
+ return ERR_GENERIC;
+ }
+ *length = keysize;
+
+ return NO_ERROR;
+}
+
+int CastAuthImpl::get_payload_buffer(::trusty::aidl::Payload &payload,
+ uint32_t size, bool) {
+ if (size > PAYLOAD_MAX_BYTES) {
+ return ERR_NOT_ENOUGH_BUFFER;
+ }
+
+ uint8_t *buffer = new uint8_t[PAYLOAD_MAX_BYTES];
+ payload = ::trusty::aidl::Payload{buffer, size};
+ return NO_ERROR;
+}
+
+void CastAuthImpl::free_payload_buffer(::trusty::aidl::Payload payload) {
+ delete[] payload.data();
+ // Note that payload is passed by copy, so will be destroyed here, no
+ // need to nullify the data member.
+}
diff --git a/app/cast_auth_impl.h b/app/cast_auth_impl.h
new file mode 100644
index 0000000..fb127cf
--- /dev/null
+++ b/app/cast_auth_impl.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <stdint.h>
+#include <trusty_ipc.h>
+
+#include "BnCastAuth.h"
+
+class CastAuthImpl : public aidl::BnCastAuth {
+public:
+ CastAuthImpl();
+ int ProvisionKey(const ::trusty::aidl::Payload &req_payload) override;
+ int SignHash(const ::trusty::aidl::Payload &req_payload,
+ ::trusty::aidl::Payload *resp_payload) override;
+
+private:
+ static constexpr struct tipc_port_acl kAcl = {
+ .flags = IPC_PORT_ALLOW_TA_CONNECT | IPC_PORT_ALLOW_NS_CONNECT,
+ .uuid_num = 0};
+ int SaveKey(const uint8_t *key, size_t length);
+ int LoadKey(uint8_t *key, size_t *length);
+ int get_payload_buffer(::trusty::aidl::Payload &payload, uint32_t size,
+ bool) override;
+ void free_payload_buffer(::trusty::aidl::Payload payload) override;
+};
diff --git a/app/main.cc b/app/main.cc
new file mode 100644
index 0000000..d3e5cde
--- /dev/null
+++ b/app/main.cc
@@ -0,0 +1,13 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <trusty_ipc.h>
+#include <uapi/err.h>
+
+#include "cast_auth_impl.h"
+
+int main() {
+ CastAuthImpl impl;
+ return impl.run_service();
+}
diff --git a/app/manifest.json b/app/manifest.json
new file mode 100644
index 0000000..9d81290
--- /dev/null
+++ b/app/manifest.json
@@ -0,0 +1,6 @@
+{
+ "uuid": "6aed6a17-6667-4662-b066-bfbcffe5d8d6",
+ "app_name": "cast_auth",
+ "min_heap": 32768,
+ "min_stack": 16384
+}
diff --git a/app/rules.mk b/app/rules.mk
new file mode 100644
index 0000000..85c71fe
--- /dev/null
+++ b/app/rules.mk
@@ -0,0 +1,45 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+COMMON_DIR := $(LOCAL_DIR)/common
+
+TRUSTY_APP_NAME := cast_auth
+
+CAST_AUTH_USE_PREBUILTS := 1
+
+MODULE := $(LOCAL_DIR)
+
+MODULE_INCLUDES += \
+ $(COMMON_DIR) \
+
+MANIFEST := $(LOCAL_DIR)/manifest.json
+
+MODULE_SRCS += \
+ $(LOCAL_DIR)/main.cc \
+ $(LOCAL_DIR)/cast_auth_impl.cc \
+
+ifeq ($(CAST_AUTH_USE_PREBUILTS),1)
+
+MODULE_INCLUDES += \
+ $(LOCAL_DIR)/../aidl/generated \
+
+MODULE_SRCS += \
+ $(LOCAL_DIR)/../aidl/generated/BnCastAuth.cpp \
+
+endif
+
+MODULE_LIBRARY_DEPS += \
+ trusty/user/base/lib/libstdc++-trusty \
+ external/boringssl \
+ trusty/user/base/lib/keybox/client \
+ trusty/user/base/lib/storage \
+ trusty/user/base/lib/system_state \
+ trusty/user/base/experimental/lib/binder-paidl \
+ trusty/user/base/lib/keybox/client \
+
+ifneq ($(CAST_AUTH_USE_PREBUILTS),1)
+
+MODULE_LIBRARY_DEPS += \
+ trusty/user/app/cast-auth/aidl \
+
+endif
+
+include make/trusted_app.mk
diff --git a/app/test-app/README.md b/app/test-app/README.md
new file mode 100644
index 0000000..08eb9c5
--- /dev/null
+++ b/app/test-app/README.md
@@ -0,0 +1,2 @@
+build-root/build-qemu-generic-arm64-test-debug/run --shell-command --verbose \
+"/vendor/bin/trusty-ut-ctrl -D /dev/trusty-ipc-dev0 com.android.trusty.cast_auth.test" --headless
diff --git a/app/test-app/main.cc b/app/test-app/main.cc
new file mode 100644
index 0000000..d1f2190
--- /dev/null
+++ b/app/test-app/main.cc
@@ -0,0 +1,268 @@
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <array>
+#include <cstdint>
+
+#include <trusty_ipc.h>
+#include <uapi/err.h>
+
+#define TLOG_TAG "cast-auth-trusty-test"
+#include <trusty_log.h>
+
+#include <lib/unittest/unittest.h>
+#include <trusty_unittest.h>
+
+#include "BpCastAuth.h"
+
+// trusty_unittest.h doesn't provide these by default.
+#define ASSERT_TRUE(val, args...) ASSERT_EQ(true, (bool)(val), ##args)
+#define ASSERT_FALSE(val, args...) ASSERT_EQ(false, (bool)(val), ##args)
+#define EXPECT_TRUE(val, args...) EXPECT_EQ(true, (bool)(val), ##args)
+#define EXPECT_FALSE(val, args...) EXPECT_EQ(false, (bool)(val), ##args)
+
+unsigned char message_bin[] = {0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x0a};
+unsigned int message_bin_len = 8;
+
+/* The following test_hash is the SHA256 hash of the message consisting of these
+ * bytes: 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x0a
+ * prefixed by the appropriate DER prefix for SHA256.
+ */
+unsigned char test_hash[] = {
+ 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65,
+ 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20, 0x00, 0xcf, 0x20,
+ 0xe0, 0x7a, 0xa9, 0x69, 0x9f, 0x6c, 0x4f, 0x93, 0x42, 0x30, 0xee,
+ 0xff, 0x8f, 0xc6, 0xf6, 0xcf, 0xdd, 0x57, 0xc8, 0xe5, 0xaf, 0x93,
+ 0x49, 0x60, 0x82, 0xd7, 0x5c, 0xee, 0x42};
+
+/* The following is a test RSA 2048 bit key, generated using openssl genrsa. It
+ * is in PKCS1 RSAPrivateKey (DER) format.
+ */
+unsigned char test_pkcs1_der[] = {
+ 0x30, 0x82, 0x04, 0xa4, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00,
+ 0xca, 0xc1, 0x47, 0xf3, 0x2f, 0xf9, 0xd8, 0x47, 0x7f, 0x3b, 0x14, 0xb7,
+ 0xde, 0x0f, 0xa8, 0x41, 0xe6, 0x30, 0x01, 0x27, 0x1b, 0x8a, 0x30, 0x96,
+ 0xd0, 0x50, 0xa7, 0xfc, 0x19, 0xe0, 0xdf, 0x71, 0x6d, 0x0e, 0x8b, 0x79,
+ 0x01, 0xa8, 0xe2, 0x01, 0x2d, 0x26, 0x93, 0xad, 0x3a, 0x2d, 0x84, 0xa0,
+ 0x52, 0x64, 0xc9, 0x49, 0xdc, 0xf5, 0xa0, 0xd0, 0xd6, 0xab, 0xe1, 0xc5,
+ 0x3d, 0x39, 0x53, 0x6b, 0xd5, 0x12, 0x33, 0x6b, 0xcd, 0x88, 0xb1, 0xa4,
+ 0x6c, 0x69, 0x7f, 0x1c, 0x74, 0x6c, 0x27, 0xd6, 0xb8, 0x09, 0x1b, 0x0d,
+ 0xb3, 0xc7, 0xd2, 0xaf, 0x52, 0xad, 0xf7, 0x61, 0x91, 0xa1, 0x39, 0x58,
+ 0x99, 0xa4, 0x9b, 0x7d, 0x76, 0xe2, 0x26, 0x56, 0x86, 0x60, 0x1a, 0x47,
+ 0xba, 0xdd, 0x94, 0xf2, 0x19, 0x08, 0x8f, 0x66, 0x9f, 0x59, 0xb9, 0x69,
+ 0x9f, 0x53, 0x76, 0xb4, 0x2b, 0xac, 0x32, 0x87, 0x6d, 0x48, 0xeb, 0x80,
+ 0x56, 0x2f, 0x1c, 0x7b, 0x82, 0x5b, 0x45, 0x51, 0xe3, 0xc1, 0xa9, 0xf0,
+ 0x5c, 0xff, 0xc8, 0xf7, 0x6c, 0xfa, 0xf0, 0x84, 0x2f, 0x43, 0xa6, 0x25,
+ 0xdf, 0xc6, 0xbd, 0xd8, 0x68, 0x56, 0x6f, 0x7b, 0xea, 0x9e, 0xf2, 0x69,
+ 0xad, 0xf8, 0x7d, 0x18, 0x83, 0x73, 0xea, 0x09, 0xf7, 0x6d, 0x86, 0x41,
+ 0x14, 0xd0, 0x98, 0xaa, 0xb0, 0x2d, 0x10, 0xd7, 0xa8, 0xdc, 0x02, 0x33,
+ 0x31, 0xe5, 0xf6, 0xf4, 0x25, 0x4f, 0x97, 0xa8, 0xc6, 0x48, 0x6f, 0x00,
+ 0xa4, 0x9f, 0x58, 0xce, 0x7b, 0xf7, 0x0d, 0x1b, 0x13, 0x4d, 0x9c, 0x69,
+ 0x06, 0x19, 0x01, 0x60, 0x99, 0xa3, 0xeb, 0x09, 0x81, 0x17, 0x98, 0xcd,
+ 0x45, 0xc1, 0xd1, 0xc6, 0x5a, 0xa4, 0xce, 0x87, 0x16, 0x75, 0x21, 0xda,
+ 0x3e, 0xbd, 0x56, 0xdc, 0x54, 0xea, 0x50, 0x5e, 0xb1, 0xe8, 0x41, 0x74,
+ 0x26, 0x4a, 0xde, 0x69, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01,
+ 0x00, 0x5e, 0x94, 0x38, 0xa6, 0xe5, 0x4b, 0x4b, 0xab, 0x56, 0x5b, 0x4d,
+ 0xf7, 0xd3, 0x1b, 0x44, 0xa6, 0xb0, 0xe4, 0xd5, 0xb4, 0xd3, 0x70, 0xeb,
+ 0xe7, 0x7d, 0xf7, 0x11, 0xd5, 0x54, 0x91, 0x04, 0x4a, 0x19, 0xd0, 0x3e,
+ 0x19, 0x4d, 0x3f, 0xe5, 0x65, 0x1d, 0x15, 0xb0, 0xaf, 0x8e, 0xc2, 0xea,
+ 0xea, 0x0a, 0x65, 0x3f, 0x4c, 0x38, 0x49, 0x50, 0x21, 0xfa, 0xf1, 0xa4,
+ 0xd8, 0x68, 0x0d, 0xd4, 0xaf, 0x29, 0x6e, 0x5b, 0x14, 0x3f, 0x85, 0x33,
+ 0x30, 0x7a, 0xed, 0xdf, 0x40, 0x7b, 0xc2, 0x73, 0xf7, 0x02, 0x54, 0x25,
+ 0x0d, 0x88, 0x3e, 0x7f, 0x36, 0x0f, 0x80, 0x5d, 0x34, 0x63, 0x45, 0x6c,
+ 0xc5, 0xba, 0xae, 0x01, 0x66, 0x4e, 0x4d, 0x82, 0x0a, 0xbc, 0x96, 0x19,
+ 0xcc, 0x3a, 0x0b, 0xe0, 0xcd, 0xea, 0x05, 0x87, 0x37, 0x1c, 0xc0, 0x32,
+ 0xf0, 0x65, 0x44, 0xfe, 0xcb, 0x5e, 0xcf, 0xed, 0xa5, 0x4f, 0x1a, 0x07,
+ 0x0a, 0x5b, 0x23, 0xea, 0x6c, 0x08, 0xcc, 0xae, 0x96, 0xc1, 0xae, 0xca,
+ 0xa2, 0x3b, 0xa8, 0xae, 0x56, 0x5a, 0xe7, 0xe7, 0x97, 0x5e, 0x76, 0x7c,
+ 0xdf, 0xab, 0xa6, 0x98, 0x81, 0x92, 0x7f, 0xc2, 0x53, 0x73, 0xd1, 0x6e,
+ 0xcf, 0x34, 0x23, 0x8d, 0xaa, 0xe0, 0x06, 0x96, 0x37, 0x23, 0x9c, 0xe3,
+ 0xf7, 0x4f, 0x7f, 0x3f, 0xe0, 0xa7, 0x79, 0xf4, 0x3f, 0x88, 0x57, 0x7b,
+ 0x66, 0x65, 0xd1, 0xd3, 0xb7, 0x35, 0x28, 0x6f, 0xff, 0xda, 0x5e, 0x94,
+ 0xbf, 0xa8, 0x8f, 0xbd, 0x02, 0x7d, 0x47, 0x1b, 0xe0, 0x7e, 0x07, 0x0b,
+ 0x50, 0x01, 0x59, 0x9b, 0x3c, 0x0c, 0xbe, 0x57, 0x8d, 0x75, 0xb9, 0x6a,
+ 0x19, 0x89, 0x51, 0x16, 0x30, 0xb1, 0xec, 0x1c, 0x21, 0x4b, 0xc6, 0xd1,
+ 0x0b, 0x73, 0xda, 0x9d, 0x5a, 0x8d, 0x44, 0x58, 0x3b, 0x77, 0x69, 0xa8,
+ 0x19, 0xec, 0xdd, 0x2c, 0x6d, 0x02, 0x81, 0x81, 0x00, 0xfc, 0x45, 0xfc,
+ 0xbe, 0x2b, 0xe7, 0x2b, 0xb5, 0x4a, 0xf9, 0x36, 0x8e, 0x45, 0x77, 0xea,
+ 0xf0, 0x6a, 0xd7, 0xd7, 0x54, 0x49, 0x6f, 0x3a, 0x60, 0x8a, 0x62, 0xb7,
+ 0x0a, 0x14, 0x89, 0x96, 0xf2, 0xc6, 0xc2, 0x73, 0x3d, 0xc3, 0xa4, 0x2e,
+ 0x32, 0x85, 0x0a, 0x14, 0x02, 0x3d, 0x71, 0x0c, 0xdb, 0xef, 0x71, 0xf2,
+ 0x6c, 0xf4, 0xe6, 0x09, 0x71, 0x79, 0xb8, 0xea, 0x7a, 0xeb, 0x19, 0x24,
+ 0x5a, 0x91, 0x21, 0xc5, 0x5c, 0x72, 0x71, 0xa3, 0xd7, 0x40, 0x6b, 0x26,
+ 0x65, 0x47, 0x1d, 0xf4, 0xa3, 0xf8, 0xe2, 0x45, 0xdf, 0x90, 0xd7, 0xd5,
+ 0x40, 0x64, 0x2f, 0xb1, 0x67, 0xf9, 0x5d, 0x32, 0xe0, 0xac, 0x85, 0xd4,
+ 0x91, 0x29, 0x94, 0x44, 0xf5, 0x9a, 0xba, 0x6c, 0x0f, 0xd8, 0xef, 0x17,
+ 0x41, 0xe9, 0x04, 0xb6, 0x59, 0xf0, 0xde, 0x79, 0xff, 0xaa, 0x98, 0x2e,
+ 0xd6, 0xe0, 0x5d, 0xa6, 0xe3, 0x02, 0x81, 0x81, 0x00, 0xcd, 0xc0, 0x08,
+ 0x2f, 0xda, 0xa0, 0x30, 0x59, 0x87, 0x6c, 0x72, 0x4d, 0x35, 0x59, 0x7a,
+ 0x64, 0x4e, 0x25, 0x03, 0x56, 0xe8, 0xa4, 0x26, 0x9f, 0xcb, 0xb7, 0xdd,
+ 0x87, 0xc3, 0x61, 0xc2, 0xf3, 0xd7, 0x7a, 0x78, 0xab, 0x65, 0xc8, 0xfe,
+ 0xad, 0x53, 0x3a, 0xea, 0xa0, 0xdf, 0x8f, 0x78, 0x0c, 0xc7, 0x98, 0x5d,
+ 0xce, 0x7c, 0x31, 0x46, 0x3a, 0x84, 0x1d, 0xf3, 0x62, 0xce, 0xb3, 0x9a,
+ 0x60, 0xd8, 0x5e, 0x15, 0xee, 0xe1, 0x85, 0x70, 0x3e, 0x99, 0x50, 0x3d,
+ 0x7e, 0x1e, 0xee, 0x95, 0x31, 0x91, 0xa1, 0x4c, 0xd9, 0xbc, 0x76, 0x40,
+ 0x9f, 0x58, 0x2a, 0x4e, 0x5b, 0x9f, 0x82, 0xcc, 0xcb, 0x68, 0x83, 0x54,
+ 0xd1, 0xdf, 0xe9, 0xed, 0x19, 0xd6, 0x28, 0x8d, 0x69, 0x91, 0x02, 0xcc,
+ 0x48, 0x41, 0x70, 0x5d, 0xcf, 0x37, 0x72, 0x8c, 0x4e, 0x22, 0x06, 0x4f,
+ 0x87, 0xab, 0x2c, 0xdb, 0x43, 0x02, 0x81, 0x81, 0x00, 0xb4, 0x36, 0xc6,
+ 0xfb, 0x8f, 0x5f, 0x5f, 0xe0, 0xed, 0xc3, 0x24, 0x0e, 0xf4, 0x5f, 0x5b,
+ 0x0d, 0x0e, 0x36, 0x4c, 0x93, 0xe0, 0xb5, 0xbd, 0x8d, 0x33, 0xae, 0x9b,
+ 0x35, 0x6f, 0x40, 0x6e, 0xfd, 0xd5, 0xb1, 0x19, 0x24, 0x19, 0x3b, 0x92,
+ 0xe8, 0xf2, 0x13, 0x26, 0x02, 0x07, 0xa4, 0x57, 0xdc, 0x51, 0xac, 0x23,
+ 0xd3, 0x64, 0x0b, 0x64, 0xd9, 0x94, 0x6b, 0xdd, 0xcd, 0x9b, 0x5e, 0xe5,
+ 0x92, 0x71, 0x35, 0x1f, 0xc9, 0x0f, 0xd4, 0x50, 0x87, 0xb7, 0x74, 0x14,
+ 0x04, 0xab, 0x8e, 0x21, 0xb2, 0x75, 0x5c, 0x27, 0x30, 0x33, 0x47, 0x8c,
+ 0x06, 0xa8, 0xcb, 0x4d, 0x3f, 0x8a, 0x6a, 0xe2, 0xaa, 0x8f, 0x74, 0x37,
+ 0x4a, 0xcf, 0xda, 0x24, 0x7d, 0x13, 0x60, 0x73, 0x4b, 0xca, 0xdb, 0xd9,
+ 0xd0, 0x72, 0xc6, 0xb4, 0x01, 0x82, 0x49, 0x5b, 0xfb, 0xa1, 0x01, 0x80,
+ 0x0c, 0x6e, 0x51, 0x58, 0xa3, 0x02, 0x81, 0x80, 0x22, 0xb4, 0x17, 0x2d,
+ 0x6b, 0x24, 0xc5, 0xc2, 0xf4, 0x12, 0x98, 0x9c, 0xe9, 0x38, 0xb4, 0x6a,
+ 0x22, 0xbc, 0x1f, 0x7a, 0x13, 0x37, 0x4c, 0xc4, 0x7b, 0x2a, 0x02, 0x15,
+ 0x9a, 0x20, 0xed, 0x2f, 0x0f, 0xd3, 0x3a, 0x73, 0x3e, 0x71, 0xce, 0x73,
+ 0x11, 0xac, 0xc8, 0x52, 0x66, 0x22, 0xde, 0xce, 0xd9, 0x03, 0x9c, 0x1e,
+ 0xed, 0xd7, 0xa9, 0xce, 0xc8, 0xe5, 0xfc, 0x5d, 0x58, 0x1b, 0xf7, 0x18,
+ 0x0a, 0xa6, 0xa3, 0xf0, 0x6c, 0xdd, 0x82, 0xf7, 0x2c, 0x08, 0xda, 0xb6,
+ 0x61, 0x25, 0x40, 0xc8, 0xe1, 0x95, 0x61, 0x4f, 0x00, 0x78, 0xb9, 0xa1,
+ 0xa6, 0xcf, 0x4b, 0xf4, 0x2c, 0x4d, 0x75, 0x99, 0x81, 0x81, 0x55, 0x57,
+ 0x28, 0xfb, 0x5d, 0xe0, 0x93, 0xbc, 0xb7, 0x4d, 0x6d, 0x06, 0x19, 0xca,
+ 0xbe, 0x2e, 0xe3, 0xc3, 0xc5, 0xc8, 0x6e, 0x5d, 0xe7, 0x63, 0x45, 0x1a,
+ 0xcf, 0x06, 0x7b, 0xdd, 0x02, 0x81, 0x81, 0x00, 0xef, 0xc8, 0x33, 0x35,
+ 0x86, 0xa1, 0x19, 0x34, 0xca, 0x6a, 0x5b, 0x43, 0x2c, 0x5b, 0x31, 0xaf,
+ 0xc5, 0x0e, 0xf8, 0x12, 0x91, 0x16, 0xb9, 0x8b, 0x01, 0xf9, 0xa8, 0x9c,
+ 0x5b, 0x9e, 0xbb, 0xc6, 0x8d, 0xf7, 0xe7, 0xeb, 0x6f, 0x04, 0xbe, 0xa9,
+ 0x06, 0xba, 0xed, 0x9a, 0xf9, 0x6c, 0xe1, 0x3f, 0x3e, 0x27, 0x79, 0xdb,
+ 0x5a, 0x8f, 0x5b, 0x4d, 0xd4, 0xd0, 0xf5, 0x2f, 0xc4, 0xaf, 0xc9, 0xc4,
+ 0x44, 0x5b, 0xf1, 0xde, 0x1a, 0x91, 0xb7, 0x2b, 0x24, 0xc0, 0xed, 0xdd,
+ 0xb1, 0x1f, 0x57, 0x82, 0x82, 0xd2, 0xa5, 0x58, 0x7e, 0xcd, 0x91, 0xf6,
+ 0x2c, 0x46, 0xb0, 0x9b, 0xc3, 0x01, 0x2c, 0x85, 0x38, 0xba, 0x6b, 0x8c,
+ 0xfc, 0x04, 0x0a, 0x8c, 0xc1, 0xde, 0x42, 0xd2, 0x14, 0x77, 0xe1, 0x1f,
+ 0x58, 0xe9, 0x78, 0x63, 0x10, 0xf9, 0x7d, 0x68, 0xdb, 0xb4, 0x63, 0xa5,
+ 0x58, 0x04, 0x33, 0xa5};
+
+/* The following is the signature of the above message generated using
+ * "openssl dgst" with the above private key, using the PKCS1v1.5 signature
+ * algorithm and SHA256 hash.
+ * This should be the output of the TA, given the above key and hash.
+ */
+unsigned char test_signature[] = {
+ 0x9a, 0x89, 0x5b, 0x21, 0x8e, 0x01, 0x79, 0x59, 0x64, 0xf3, 0xbf, 0x8f,
+ 0x82, 0x14, 0xe8, 0x39, 0x97, 0x96, 0x78, 0x96, 0xc1, 0xcb, 0x02, 0x91,
+ 0xf2, 0xb3, 0x17, 0x7b, 0xe6, 0xaf, 0xa9, 0x67, 0x7a, 0xc1, 0x89, 0xac,
+ 0x99, 0x3f, 0x6f, 0x07, 0xe4, 0x02, 0x2f, 0xc5, 0x0c, 0xb2, 0x7b, 0x2b,
+ 0xb5, 0x7b, 0xba, 0x41, 0xfc, 0xf1, 0x4f, 0xc4, 0x23, 0x88, 0x52, 0xef,
+ 0x0e, 0x3d, 0x35, 0x07, 0xb1, 0x70, 0x0f, 0xeb, 0x62, 0x9e, 0x6d, 0x4c,
+ 0x9e, 0x22, 0x11, 0x38, 0x35, 0x75, 0xd5, 0xef, 0xd6, 0x0e, 0x38, 0xcb,
+ 0xe1, 0x13, 0x1c, 0xeb, 0xfb, 0x1c, 0x1e, 0x1c, 0x9f, 0x0a, 0x33, 0x4b,
+ 0x3a, 0x2c, 0x02, 0x03, 0x81, 0x74, 0x2c, 0x23, 0x2c, 0x58, 0x55, 0x14,
+ 0x5c, 0xfd, 0x4d, 0x46, 0x64, 0x0d, 0x0a, 0xb3, 0x01, 0x55, 0x11, 0x5a,
+ 0x2b, 0x05, 0x76, 0x50, 0xd8, 0x95, 0xd5, 0x07, 0xe6, 0x94, 0x3c, 0xef,
+ 0xde, 0x87, 0x15, 0x3c, 0xf9, 0xa2, 0x06, 0xec, 0x94, 0x29, 0xf1, 0x0b,
+ 0x6d, 0x06, 0xe3, 0xdf, 0xb3, 0x0b, 0xca, 0x77, 0x33, 0x59, 0xdc, 0xb7,
+ 0xd9, 0x45, 0x63, 0x2e, 0xa1, 0xdf, 0xc5, 0x48, 0x7c, 0x57, 0x82, 0xe3,
+ 0x34, 0x0d, 0xb6, 0xcb, 0xe0, 0xca, 0x14, 0x1d, 0x1b, 0x81, 0x93, 0x4b,
+ 0xc0, 0xc8, 0x2c, 0x33, 0xd9, 0x77, 0xd6, 0x5e, 0x47, 0x2a, 0x67, 0x5f,
+ 0xaa, 0xd1, 0x17, 0xe8, 0xa2, 0xe4, 0xa9, 0xac, 0xb2, 0x65, 0x49, 0x58,
+ 0x57, 0x7e, 0x00, 0xa8, 0xae, 0xd4, 0x38, 0x91, 0x6c, 0xb1, 0x00, 0xa0,
+ 0x4d, 0xaa, 0x1f, 0x77, 0xf3, 0x44, 0x6c, 0x81, 0xcf, 0xa5, 0x86, 0x43,
+ 0x02, 0x4a, 0x67, 0x01, 0x5e, 0x7a, 0xde, 0x98, 0x90, 0x1c, 0xbf, 0xfe,
+ 0xb5, 0xb1, 0x41, 0xdf, 0x2d, 0xfe, 0x80, 0x1e, 0xe2, 0x78, 0x50, 0xd0,
+ 0x7b, 0xde, 0x9e, 0xb2};
+
+/* The following function is solely for the purpose of testing. It "wraps" a key
+ * such that it can be unwrapped by the sample keybox implementation in Trusty
+ * As warned therein:
+ *
+ * THIS DOES NOT PROVIDE ANY SECURITY
+ *
+ * This is not a useful wrapping system. This is just intended as enough to mock
+ * that:
+ * 1. The wrapped data and unwrapped data are not the same.
+ * 2. The wrapped data will fail to unwrap if it is trivially tampered with.
+ *
+ * Note this wrapping function has no error checking. It's assumed to be called
+ * correctly i.e. such that the destination buffer (wrapped_keybox) is at least
+ * one byte bigger than the source buffer (keybox_plaintext).
+ */
+void keybox_wrap_for_test(const uint8_t *keybox_plaintext,
+ size_t keybox_plaintext_len, uint8_t *wrapped_keybox,
+ size_t wrapped_keybox_buf_len,
+ size_t *wrapped_keybox_len) {
+ /* Generate checksum */
+ uint8_t checksum = 0;
+ for (size_t i = 0; i < keybox_plaintext_len; i++) {
+ checksum ^= keybox_plaintext[i];
+ }
+
+ /* Flip bits with masking byte */
+ for (size_t i = 0; i < keybox_plaintext_len; i++) {
+ wrapped_keybox[i] = keybox_plaintext[i] ^ 0x42;
+ }
+
+ *wrapped_keybox_len = keybox_plaintext_len + 1;
+ wrapped_keybox[keybox_plaintext_len] = checksum;
+}
+
+TEST(CastAuthTest, ProvisionAndSignHash) {
+ int rc;
+ std::optional<aidl::BpCastAuth> cast_auth;
+ rc = aidl::BpCastAuth::connect(cast_auth, aidl::ICastAuth::PORT,
+ IPC_CONNECT_WAIT_FOR_PORT);
+ ASSERT_EQ(NO_ERROR, rc, "connect");
+
+ uint8_t wrapped_keybox[sizeof(test_pkcs1_der) + 1];
+ size_t wrapped_keybox_len;
+ keybox_wrap_for_test(test_pkcs1_der, sizeof(test_pkcs1_der), wrapped_keybox,
+ sizeof(wrapped_keybox), &wrapped_keybox_len);
+ {
+ ::trusty::aidl::Payload prov_req(wrapped_keybox, wrapped_keybox_len);
+ rc = cast_auth->ProvisionKey(prov_req);
+ ASSERT_EQ(NO_ERROR, rc, "ProvisionKey");
+ }
+
+ {
+ ::trusty::aidl::Payload sign_req(test_hash, sizeof(test_hash));
+ uint8_t signature[256];
+ ::trusty::aidl::Payload sign_resp(signature, sizeof(signature));
+ rc = cast_auth->SignHash(sign_req, &sign_resp);
+ ASSERT_EQ(NO_ERROR, rc, "SignHash");
+ ASSERT_EQ(sign_resp.size(), sizeof(test_signature), "signature size");
+ for (unsigned int i = 0; i < sign_resp.size(); ++i) {
+ EXPECT_EQ(sign_resp.data()[i], test_signature[i], "signature diff");
+ }
+ }
+
+test_abort:;
+}
+
+TEST(CastAuthTest, ProvisionUnwrappedAndSignHash) {
+ int rc;
+ std::optional<aidl::BpCastAuth> cast_auth;
+ rc = aidl::BpCastAuth::connect(cast_auth, aidl::ICastAuth::PORT,
+ IPC_CONNECT_WAIT_FOR_PORT);
+ ASSERT_EQ(NO_ERROR, rc, "connect");
+
+ {
+ ::trusty::aidl::Payload prov_req(test_pkcs1_der, sizeof(test_pkcs1_der));
+ rc = cast_auth->ProvisionKey(prov_req);
+ ASSERT_EQ(NO_ERROR, rc, "ProvisionKey");
+ }
+
+ {
+ ::trusty::aidl::Payload sign_req(test_hash, sizeof(test_hash));
+ uint8_t signature[256];
+ ::trusty::aidl::Payload sign_resp(signature, sizeof(signature));
+ rc = cast_auth->SignHash(sign_req, &sign_resp);
+ ASSERT_EQ(NO_ERROR, rc, "SignHash");
+ ASSERT_EQ(sign_resp.size(), sizeof(test_signature), "signature size");
+ for (unsigned int i = 0; i < sign_resp.size(); ++i) {
+ EXPECT_EQ(sign_resp.data()[i], test_signature[i], "signature diff");
+ }
+ }
+
+test_abort:;
+}
+
+PORT_TEST(CastAuthTest, "com.android.trusty.cast_auth.test")
diff --git a/app/test-app/manifest.json b/app/test-app/manifest.json
new file mode 100644
index 0000000..73da1eb
--- /dev/null
+++ b/app/test-app/manifest.json
@@ -0,0 +1,6 @@
+{
+ "uuid": "784d5d01-4626-40cf-b8e9-4ec148eee212",
+ "app_name": "cast_auth_test",
+ "min_heap": 16384,
+ "min_stack": 8192
+}
diff --git a/app/test-app/rules.mk b/app/test-app/rules.mk
new file mode 100644
index 0000000..a42bcc8
--- /dev/null
+++ b/app/test-app/rules.mk
@@ -0,0 +1,41 @@
+LOCAL_DIR := $(GET_LOCAL_DIR)
+COMMON_DIR := $(LOCAL_DIR)/../common
+
+TRUSTY_APP_NAME := cast_auth_test
+
+CAST_AUTH_USE_PREBUILTS := 1
+
+MODULE := $(LOCAL_DIR)
+
+MODULE_INCLUDES += \
+ $(COMMON_DIR) \
+
+MANIFEST := $(LOCAL_DIR)/manifest.json
+
+MODULE_SRCS += \
+ $(LOCAL_DIR)/main.cc
+
+ifeq ($(CAST_AUTH_USE_PREBUILTS),1)
+
+MODULE_INCLUDES += \
+ $(LOCAL_DIR)/../../aidl/generated \
+
+MODULE_SRCS += \
+ $(LOCAL_DIR)/../../aidl/generated/BpCastAuth.cpp \
+
+endif
+
+MODULE_LIBRARY_DEPS += \
+ trusty/user/base/lib/libstdc++-trusty \
+ trusty/user/base/lib/libc-trusty \
+ trusty/user/base/lib/unittest \
+ trusty/user/base/experimental/lib/binder-paidl \
+
+ifneq ($(CAST_AUTH_USE_PREBUILTS),1)
+
+MODULE_LIBRARY_DEPS += \
+ trusty/user/app/cast-auth/aidl \
+
+endif
+
+include make/trusted_app.mk
diff --git a/usertests-inc.mk b/usertests-inc.mk
new file mode 100644
index 0000000..dd50ecf
--- /dev/null
+++ b/usertests-inc.mk
@@ -0,0 +1,18 @@
+# Copyright (C) 2019 The Android Open Source Project
+#
+# 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.
+#
+
+TRUSTY_USER_TESTS += \
+ trusty/user/app/cast-auth/app/test-app \
+
