wolfTPM Release 2.3 (11/08/2021)

Summary

Fixes for minor build issues, refactor of GPIO configure to combine and new PCR Read example.

Detail

• Refactor GPIO support (single gpio_config) (PR #194)
• Fix for Linux HAL IO try again timeout logic (PR #194)
• Fix for big endian in TIS layer (PR #191)
• Fix for RSAES padding (RSA_Encrypt) (PR #187)
• Fix in tests to allow command code error for CreateLoaded (not supported on hardware) (PR #184)
• Fix for compiler warning for file read in make_credential.c (PR #182)
• Fixes for Windows builds (PR #181)
• Fixes for RSA RNG in edge case builds (fixes wolfBoot build error) (PR #180)
• Added PCR Read example (PR #185)

wolfTPM Release 2.2 (07/13/2021)

Summary

Added new examples for remote attestation, make credential and GPIO support. Added Endorsement hierarchy support to many examples. Refactored the reference HAL IO code into separate files.

Detail

• Fixed total auth area size when multiple auth sessions are used (PR #174)
• Fixed TPM2_SetupPCRSel to only allow valid pcrIndex values (PR #165 and PR #167)
• Fixed TPM2_MakeCredential to work without auth as TCG spec defines (PR #174)
• Fixed TPM2_MakeCredential to support using EK pub to encrypt challenge (PR #174)
• Fixed TPM2_ActivateCredential to work with EK pub to decrypt challenge (PR #174)
• Fix to only enable printf in library proper if DEBUG_WOLFTPM is set (PR #154)
• Added support for QNX with wolfTPM (PR #156)
• Added credential examples for remote attestation (PR #161)
• Added new example for sealing a secret using TPM key (PR #157)
• Added GPIO config, read and set examples (PR #155 and #172)
• Added GPIO support and examples for ST33 (PR #155)
• Added GPIO support and examples for Nuvoton NPCT75x (PR #172)
• Added Endorsement support for keygen and attestation examples using -eh (PR #174)
• Added missing TPM2_CreateLoaded command and added wrapper wolfTPM2_CreateLoadedKey (PR #174)
• Added new wrappers for public PEM support wolfTPM2_RsaKey_TpmToPemPub and wolfTPM2_RsaKey_PemPubToTpm (PR #174)
• Added keygen option to output PEM files for TPM public keys (PR #174)
• Added saving of EK's TPM2B_PUBLIC for attestation purposes (PR #174)
• Added new wrapper for satisfying EK policy (PR #174)
• Added unit test for TPM2_CertifyCreation (PR #169)
• Added support for --with-wolfcrypt=/dir/ (PR #166)
• Added documentation for using QEMU with --enable-devtpm for testing (PR #146)
• Modified keygen to use new wolfTPM2_CreateLoaded wrapper to acquire correct AK name (PR #174)
• Modified keyload to be able to load keys created under the EK/EH (PR #174)
• Cleanup the ECC point code to appease some coverity warnings (PR #168)
• Cleanup obsolete txBuf[4] = 0x00; because handled with SPI check wait state logic (PR #162)
• Improved API documentation using Doxygen for wolfTPM wrappers and proprietary API's (PR #164)
• Improved the Windows TBS documentation (PR #163)
• Refactor the assignment of structs to use memcpy (PR #176)
• Refactor of the TPM IO code to separate files (PR #171)

wolfTPM Release 2.1 (03/17/2021)

Summary

Added examples for symmetric key creating and NVRAM.

Detail

• Fixed possible KDFa buffer overrun (PR #147)
• Fixed typo on WOLFTPM_USER_SETTINGS (PR #140)
• Improved examples to use the key templates. (PR #136)
• Added symmetric key support for key generation examples (PR #143)
• Added NVRAM examples (PR #145)
• Added STM32 CubeMX I2C support (PR #142)
• Added details for TPM 2.0 with Windows TBS (PR #144)
• Added alternate subject name to example certificates for TLS (PR #141)
• Updated expired wolfSSL certs (PR #139)
• Removed EK from the attestation and signed timestamp examples (PR #152)

wolfTPM Release 2.0.0 (12/07/2020)

Summary

Added AES CFB parameter encryption, HMAC sessions, TPM simulator, Windows TPM (TBSI) support and more examples for time/keys.

Detail

• Refactor of the session authentication. New struct TPM2_AUTH_SESSION and wolfTPM2_SetAuth_* API's. (PR #129 and #133)
• Added Windows TPM TBSI support (PR #127)
• Added TPM simulator support using TPM TCP protocol (PR #121)
• Added minGW support (PR #127)
• Added AES CFB parameter encryption support (PR #129)
• Added XOR parameter encryption support (PR #122)
• Added "-aes" or "-xor" option to some examples to enable parameter encryption. (PR #129)
• Added HMAC session support (PR #129)
• Added support for encrypted RSA salt for salted-unbounded session (PR #129)
• Added innerWrap and outerWrap support for sensitive to private. (PR #129)
• Improvements to the KDFa (PR #129)
• Improved the param encryption to use buffers inline (PR #129)
• Added Key generation and loading examples using disk to store the key (PR #131)
• Added support for importing external private key to get a key blob for easy re-loading. (PR #132)
• Add TPM clock increment example (PR #117)
• Add test vectors for AES CFB and make it the default for tests (PR #125)
• Improved documentation and code comments (PR #126)
• Add script to run unit tests with software TPM (PR #124)

wolfTPM Release 1.8 (04/28/2020)

Summary

• Added Xilinx Zynq UltraScale+ MPSoC.
• Added Linux TIS kernel driver.
• Added Nuvoton and Nations Tech TPM module support.

Details

• Fixed obsolete workaround for ST33 and TIS header size. (PR #85)
• Fixes for building with older wolfSSL versions not supporting wc_HashFree. (PR #87)
• Fixes for building without wolfCrypt RSA (when NO_RSA is defined). (PR #89)
• Fixes for ECC verify in crypto callback to try software if the curve is not supported (TPM_RC_CURVE) by the TPM hardware. (PR #89)
• Fixes for building with WOLFTPM2_USE_SW_ECDHE. (PR #86)
• Added support for using /dev/tpmX. (PR #91)
• Added Xilinx Zynq MPSoC bare-metal SPI support. (PR #85)
• Added example for using an ECC primary storage key (root owner). (PR #84)
• Added support for Nuvoton TPM 2.0 NPCT650. (PR #91)
• Added support for Nations Technologies Inc. TPM 2.0 module (Z32H330). (PR #88)
• Cleanup of the session auth, so after being set it is also cleared. (PR #84)
• Moved the chip specific settings to tpm2_types.h. (PR #85)

wolfTPM Release 1.9 (08/24/2020)

Summary

• Added NPCT75x Nuvoton support
• Dynamic module detection
• Attestation key wrappers.

Detail

• Fix when building wolfSSL with old names NO_OLD_WC_NAMES. (PR #113)
• Fix for TPM2 commands with more than one auth session. (PR #95)
• Bugfixes for TPM2_Packet_AppendSymmetric and TPM2_Packet_ParseSymmetric. (PR #111)
• TPM attestation fixes. (PR #103)
• If creating an NV and it already exists, set auth and handle anyways. (PR #99)
• Cleanups, removed unused code from the PCR examples. (PR #112)
• Improvements to the signed timestamp example. (PR #108)
• Add example of a TPM2.0 Quote using wolfTPM. (PR #107)
• Added NPCT75x Nuvoton support and dynamic module detection support. (PR #102)
• Added RSA sign/verify support and expanded RSA key loading API's. (PR #101)
• Attestation key wrappers. (PR #100)
• Add missing xor overload to TPMU_SYM_KEY_BITS. (PR #97)
• Signed timestamp example (AIK and Attestation). (PR #96)
• Adding more testing. (PR #93)
• Add TPM benchmarking results for Nuvoton NPCT650 TPM2.0 module. (PR #92)

wolfTPM Release 1.7 (12/27/2019)

Summary

Adds new wrappers for Non-Volatile (NV), changing auth for a key and shutdown.

Detail

• Fixes for coverity checks on buffers. (PR #78)
• Fix visibility warnings in Cygwin. (PR #80)
• Added wrapper for changing a key's authentication wolfTPM2_ChangeAuthKey. (PR #77)
• Added support for using authentication with NV. (PR #79)
• Adds new wrapper API's: wolfTPM2_NVWriteAuth, wolfTPM2_NVReadAuth and wolfTPM2_NVDeleteAuth. (PR #79)
• Added new wrappers for shutdown and handle cleanup. (PR #81)

wolfTPM Release 1.6 (08/01/2019)

Summary

Improvements for compatibility, chip detection, initialization options and small stack. Adds new wrapper API's for PCR extend. Adds support for using HMAC with existing key.

Details

• Fix for wolfCrypt init/cleanup issue with reference count. (PR #75)
• Fix to restore existing TPM context after calling wolfTPM2_Test. (PR #74)
• Fix to resolve handling of unsupported ECC curves with the TPM module and ECDHE. (PR #69)
• Fix for wolfTPM2_SetCommand to ensure auth is cleared. (PR #69)
• Added --enable-smallstack build options for reducing stack usage. (PR #73)
• Added support for keeping an HMAC key loaded. (PR #72)
• Added API unit test framework. (PR #71)
• Added new wrapper API wolfTPM2_OpenExisting for accessing device that's already started. (PR #71)
• Added new wolfTPM2_ExtendPCR wrapper. (PR #70)
• Added crypto callback flags for FIPS mode and Use Symmetric options. (PR #69)
• Added WOLFTPM_DEBUG_TIMEOUT macro for debugging the timeout checking. (PR #69)
• Added support for ST33 TPM2_SetMode command for disabling power saving. (PR #69)
• Improvements for chip detection, compatibility and startup performance (PR #67)
  • Added support for XPRINTF.
  • Fix printf type warnings.
  • Moved the TPM hardware type build macro detection until after the user_settings.h include.
  • Optimization to initialize Mutex and RNG only when use is required.
  • Added missing stdio.h for printf in examples.
  • Added new API's TPM2_SetActiveCtx, TPM2_ChipStartup, TPM2_SetHalIoCb and TPM2_Init_ex.
  • Allowed way to indicate BOOL type already defined.
  • Added C++ support.
• Added new API wolfTPM2_Test for testing for TPM and optionally returning capabilities. (PR #66)
• Added way to include generated wolftpm/options.h (or customized one) using WOLFTPM_USER_SETTINGS. (PR #63)

wolfTPM Release 1.5 (02/20/2019)

Summary

Adds support for the Microchip ATTPM20 TPM 2.0 module and Barebox bootloader. Improvements for TLS client/server examples and overall performance. Adds TPM wrappers for HMAC, AES Key Loading and Benchmarking support for RNG/AES/Hashing/TLS.

Detail

• Fixed issue with cleanup not unregistering the crypto callback. (PR #60)
• Added support for Microchip ATTPM20 part. (PR #59)
• Added support for Barebox (experimental). (PR #52)
• Added TLS benchmarking for CPS and KB/Sec. Enabled with TLS_BENCH_MODE. (PR #56)
• Added TLS client/server support for symmetric AES/HMAC/RNG. Enabled with WOLFTPM_USE_SYMMETRIC. (PR #56)
• Added TLS client/server support for mutual authentication. (PR #56)
• Added TIS locking protection for concurrent process access. Enabled using WOLFTPM_TIS_LOCK. (PR #56)
• Added symmetric AES encrypt and decrypt wrappers and examples. (PR #54 and PR #55)
• Added HMAC wrappers and examples. (PR #56)
• Added wrappers and examples for loading external HMAC and AES keys. (PR #56)
• Added delete key wrapper and example. (PR #58)
• Added ECDH support for ephemeral key generation and shared secret. (PR #50)
• Added benchmark support for RNG, AES (CTR, CBC, CFB) 128/256 and SHA-1, SHA-256, SHA-384 and SHA-512. (PR #54)
• Added new wolfTPM2_GetCapabilities wrapper API for getting chip info. (PR #51)
• Added command and response logging using ./configure --enable-debug=verbose or #define WOLFTPM_DEBUG_VERBOSE. (PR #54)
• Added option to enable raw IO logging using WOLFTPM_DEBUG_IO. (PR #54)
• Added option to disable TPM Benchmark code using NO_TPM_BENCH. (#60)
• Added examples/README.md for setup instructions.
• Tuned max SPI clock and performance for supported TPM 2.0 chips. (PR #56)
• Cleanup to move common test parameters into examples/tpm_test.h. (PR #54)
• Updated benchmarks and console output for examples in README.md.

wolfTPM Release 1.4 (11/13/2018)

• Fixed cryptodev ECC callback to use R and S for the signature verify. (PR #39)
• Fixed printf type warnings with DEBUG_WOLFTPM defined. (PR #37)
• Fixed detection of correct hash algorithm in wolfTPM2_VerifyHash. (PR #39)
• Fix bug with native example where TPM2_Shutdown failure would loop. (PR #34)
• Fix to decoupled the fixed TPM algorithms/sizes from wolfCrypt build options. (PR #35)
• Fix for building with different wolfCrypt options. (PR #26)
• Fix for byte swap build error. (PR #26)
• Fix CSR example CertName to use designated initializers to resolve use against different wolfSSL versions. (PR #25)
• Improved portability by eliminating the packed TPM2_HEADER. (PR #45)
• Improved stack reduction by eliminating the private section from WOLFTPM2_KEY struct. (PR #31)
• Added TLS server example for wolfTPM. (PR #30)
• Added more RSA and ECC key loading examples. (PR #47)
• Added support for loading an external private keys using new API's wolfTPM2_LoadPrivateKey, wolfTPM2_LoadRsaPrivateKey, and wolfTPM2_LoadEccPrivateKey. (PR #46)
• Added example for reading the firmware version using TPM2_GetCapability with TPM_PT_FIRMWARE_VERSION_1. (PR #44)
• Added hashing wrappers and tests using new API's: wolfTPM2_HashStart, wolfTPM2_HashUpdate and wolfTPM2_HashFinish. (PR #40)
• Added PKCS7 7 sign/verify example demonstrating large data case using chunked buffer and new _ex functions. (PR #32)
• Added Key Generation to benchmark. (PR #33)
• Added ST33TP I2C TPM 2.0 support (./configure --enable-st33 --enable-i2c). (PR #33)
• Added ST33TP SPI TPM 2.0 support (--enable-st33 or #define WOLFTPM_ST33). (PR #25)
• Added support for Atmel ASF SPI. (PR #25)
• Added example for IAR EWARM. (PR #27)
• Added ECC verify test using public key and NIST test vectors. (PR #39)
• Added new RNG wrapper API wolfTPM2_GetRandom. (PR #36)
• Added macro for hardware RNG max request as MAX_RNG_REQ_SIZE. (PR #36)
• Added instructions for enabling SPI and I2C on the Raspberry Pi. (PR #34)
• Added support for symmetric AES encrypt/decrypt. (PR #29)
• Added wrapper to help with creation of symmetric keys. (PR #29)
• Added advanced IO callback support (enabled using --enable-advio or #define WOLFTPM_ADV_IO). (PR #25)
• Added overridable define WOLFTPM_LOCALITY_DEFAULT for the locality used. (PR #28)
• Added XTPM_WAIT() macro to enable custom wait between polling. (PR #28)
• Added build option to disable wolfCrypt dependency using ./configure --disable-wolfcrypt or #define WOLFTPM2_NO_WOLFCRYPT. (PR #24)
• Removed unused SET, CLEAR, TRUE, FALSE macros. (PR #28)
• Cleanup DEBUG_WOLFTPM ifdef's around all printfs in library proper. (PR #38)
• Cleanup of line lengths. (PR #37)
• Cleanup of wrapper test to move test data into tpm_test.h. (PR #47)
• Cleanup of the packet code to handle determining of size (mark/place). (PR #46)
• Cleanup of the IO callback examples. (PR #25)
• Cleanup of TIS layer improve return code and timeout handling. (PR #28)
• Cleanup to move types and configuration/port specific items into new tpm2_types.h. (PR #24)