文章目錄

• • • • 1、TEE API介紹
      • 2、Client API : CA與TA通信的API介紹
      • 3、TEE API : TA系統調用TEE OS的API
      • • (1)、Asymmetric
        • (2)、Authenticated Encryption
        • (3)、Basic Arithmetic
        • (4)、Cancellation
        • (5)、Converter
        • (6)、Data Stream Access
        • (7)、Deprecated
        • (8)、Events
        • (9)、Fast Modular Multiplication
        • (10)、Generic Object
        • (11)、Generic Operation
        • (12)、Initialization
        • (13)、Internal Client API
        • (14)、Key Derivation
        • (15)、Logical Operation
        • (16)、MAC
        • (17)、Memory Allocation and Size of Objects
        • (18)、Memory Management
        • (19)、Message Digest
        • (20)、Modular Arithmetic
        • (21)、Other Arithmetic
        • (22)、Panic Function
        • (23)、Peripherals
        • (24)、Persistent Object
        • (25)、Persistent Object Enumeration
        • (26)、Property Access
        • (27)、Random Data Generation
        • (28)、Symmetric Cipher
        • (29)、TA Interface
        • (30)、Time
        • (31)、Transient Object

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1、TEE API介紹

TEE API分兩種:

• 一類是CA與TA通信的API，實現方式就是應用程序調用libteec.so庫，libteec.so庫是由optee_client編譯出的，libteec.so中調用了dev/tee_priv節點陷入kernel
  mode，在kernel mode中調用smc同步異常指令陷入到ATF，ATF再跳出到TEE OS, TEE
  OS再將消息發送給相應的TA。
  該API在globalplatform中的TEE_Client_API_Specification-V1.0_c.pdf文檔中有所規定，api的具體實現是在optee_client/libteec
• 一類是TA系統調用TEE OS的API，這是的實現方式其實就是系統調用，調用SVC同步異常指令，進入kernel mode。
  該API在globalplatform中的GPD_TEE_Internal_Core_API_Specification_v1.1.pdf文檔中有所規定，api的具體實現是在optee_os\lib\libutee

2、Client API : CA與TA通信的API介紹

這類api不到10個(一共9個)

TEEC_InitializeContext TEEC_FinalizeContext TEEC_RegisterSharedMemory TEEC_AllocateSharedMemory TEEC_ReleaseSharedMemory TEEC_OpenSession TEEC_CloseSession TEEC_InvokeCommand TEEC_RequestCancellation

3、TEE API : TA系統調用TEE OS的API

這類api就有很多了，也分好幾類：

(1)、Asymmetric

TEE_AsymmetricDecrypt TEE_AsymmetricEncrypt TEE_AsymmetricSignDigest TEE_AsymmetricVerifyDigest

(2)、Authenticated Encryption

TEE_AEDecryptFinal TEE_AEEncryptFinal TEE_AEInit TEE_AEUpdate TEE_AEUpdateAAD

(3)、Basic Arithmetic

TEE_BigIntAdd TEE_BigIntDiv TEE_BigIntMul TEE_BigIntNeg TEE_BigIntSquare TEE_BigIntSub

(4)、Cancellation

TEE_GetCancellationFlag TEE_MaskCancellation TEE_UnmaskCancellation

(5)、Converter

TEE_BigIntConvertFromOctetString TEE_BigIntConvertFromS32 TEE_BigIntConvertToOctetString TEE_BigIntConvertToS32

(6)、Data Stream Access

TEE_ReadObjectData TEE_SeekObjectData TEE_TruncateObjectData TEE_WriteObjectData

(7)、Deprecated

TEE_BigIntInitFMMContext TEE_CloseAndDeletePersistentObject TEE_CopyObjectAttributes TEE_GetObjectInfo TEE_RestrictObjectUsage

(8)、Events

TEE_Event_AddSources TEE_Event_CancelSources TEE_Event_CloseQueue TEE_Event_DropSources TEE_Event_ListSources TEE_Event_OpenQueue TEE_Event_TimerCreate TEE_Event_Wait

(9)、Fast Modular Multiplication

TEE_BigIntComputeFMM TEE_BigIntConvertFromFMM TEE_BigIntConvertToFMM

(10)、Generic Object

TEE_CloseObject TEE_GetObjectBufferAttribute TEE_GetObjectInfo (deprecated) TEE_GetObjectInfo1 TEE_GetObjectValueAttribute TEE_RestrictObjectUsage (deprecated) TEE_RestrictObjectUsage1

(11)、Generic Operation

TEE_AllocateOperation TEE_CopyOperation TEE_FreeOperation TEE_GetOperationInfo TEE_GetOperationInfoMultiple TEE_IsAlgorithmSupported TEE_ResetOperation TEE_SetOperationKey TEE_SetOperationKey2

(12)、Initialization

TEE_BigIntInit TEE_BigIntInitFMM TEE_BigIntInitFMMContext (deprecated) TEE_BigIntInitFMMContext1

(13)、Internal Client API

TEE_CloseTASession TEE_InvokeTACommand TEE_OpenTASession

(14)、Key Derivation

TEE_DeriveKey

(15)、Logical Operation

TEE_BigIntAbs TEE_BigIntAssign TEE_BigIntCmp TEE_BigIntCmpS32 TEE_BigIntGetBit TEE_BigIntGetBitCount TEE_BigIntSetBit TEE_BigIntShiftRight

(16)、MAC

TEE_MACCompareFinal TEE_MACComputeFinal TEE_MACInit TEE_MACUpdate

(17)、Memory Allocation and Size of Objects

TEE_BigIntFMMContextSizeInU32 TEE_BigIntFMMSizeInU32 TEE_BigIntSizeInU32 (macro)

(18)、Memory Management

TEE_CheckMemoryAccessRights TEE_Free TEE_GetInstanceData TEE_Malloc TEE_MemCompare TEE_MemFill TEE_MemMove TEE_Realloc TEE_SetInstanceData

(19)、Message Digest

TEE_DigestDoFinal TEE_DigestExtract TEE_DigestUpdate

(20)、Modular Arithmetic

TEE_BigIntAddMod TEE_BigIntExpMod TEE_BigIntInvMod TEE_BigIntMod TEE_BigIntMulMod TEE_BigIntSquareMod TEE_BigIntSubMod

(21)、Other Arithmetic

TEE_BigIntComputeExtendedGcd TEE_BigIntIsProbablePrime TEE_BigIntRelativePrime

(22)、Panic Function

TEE_Panic

(23)、Peripherals

TEE_Peripheral_Close TEE_Peripheral_CloseMultiple TEE_Peripheral_GetPeripherals TEE_Peripheral_GetState TEE_Peripheral_GetStateTable TEE_Peripheral_Open TEE_Peripheral_OpenMultiple TEE_Peripheral_Read TEE_Peripheral_SetState TEE_Peripheral_Write

(24)、Persistent Object

TEE_CloseAndDeletePersistentObject (deprecated) TEE_CloseAndDeletePersistentObject1 TEE_CreatePersistentObject TEE_OpenPersistentObject TEE_RenamePersistentObject

(25)、Persistent Object Enumeration

TEE_AllocatePersistentObjectEnumerator TEE_FreePersistentObjectEnumerator TEE_GetNextPersistentObject TEE_ResetPersistentObjectEnumerator TEE_StartPersistentObjectEnumerator

(26)、Property Access

TEE_AllocatePropertyEnumerator TEE_FreePropertyEnumerator TEE_GetNextProperty TEE_GetPropertyAsBinaryBlock TEE_GetPropertyAsBool TEE_GetPropertyAsIdentity TEE_GetPropertyAsString TEE_GetPropertyAsU32 TEE_GetPropertyAsU64 TEE_GetPropertyAsUUID TEE_GetPropertyName TEE_ResetPropertyEnumerator TEE_StartPropertyEnumerator

(27)、Random Data Generation

TEE_GenerateRandom

(28)、Symmetric Cipher

TEE_CipherDoFinal TEE_CipherInit TEE_CipherUpdate

(29)、TA Interface

TA_CloseSessionEntryPoint TA_CreateEntryPoint TA_DestroyEntryPoint TA_InvokeCommandEntryPoint TA_OpenSessionEntryPoint

(30)、Time

TEE_GetREETime TEE_GetSystemTime TEE_GetTAPersistentTime TEE_SetTAPersistentTime TEE_Wait

(31)、Transient Object

TEE_AllocateTransientObject TEE_CopyObjectAttributes (deprecated) TEE_CopyObjectAttributes1 TEE_FreeTransientObject TEE_GenerateKey TEE_InitRefAttribute TEE_InitValueAttribute TEE_PopulateTransientObject TEE_ResetTransientObject

總結

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