Add SRAM PUF (Physically Unclonable Function) support to wolfCrypt. Derives device-unique cryptographic keys from the power-on state of SRAM memory using a BCH(127,64,t=10) fuzzy extractor with HKDF key derivation.
- **wolfCrypt PUF API** (`wolfcrypt/src/puf.c`, `wolfssl/wolfcrypt/puf.h`)
- `wc_PufInit`, `wc_PufReadSram`, `wc_PufEnroll`, `wc_PufReconstruct`
- `wc_PufDeriveKey` (HKDF-SHA256), `wc_PufGetIdentity` (SHA-256 device fingerprint)
- `wc_PufZeroize` (secure context cleanup)
- `wc_PufSetTestData` (synthetic SRAM for testing without hardware)
- **BCH(127,64,t=10) error-correcting codec** - corrects up to 10 bit flips per 127-bit codeword across 16 codewords
- **`WC_PUF_SHA3` build option** - select SHA3-256 instead of SHA-256 for identity hash and HKDF (default: SHA-256)
- **Precomputed GF(2^7) tables** - `const` arrays in `.rodata` (no runtime init, thread-safe, flash-resident on embedded)
- `./configure --enable-puf` (auto-enables HKDF dependency)
- CMake: `WOLFSSL_PUF=yes`
- `WOLFSSL_USER_SETTINGS`: define `WOLFSSL_PUF` and `WOLFSSL_PUF_SRAM`
- See wolfssl-examples/puf for example implementation on STM32 NUCLEO-H563ZI (Cortex-M33, STM32H563ZI)
- Supports test mode (synthetic SRAM)
- Builds to ~13KB `.elf`
- Tested on NUCLEO-H563ZI: enrollment, noisy reconstruction, key derivation all pass
- `.github/workflows/puf.yml`: host build + test workflow for PUF feature
- Doxygen API docs for all 8 public functions
- PUF group added to `doxygen_groups.h`
* implement legacy compatibility in settings.h and configure.ac (adds --enable-blake2b while retaining --enable-blake2);
* fix incorrect Blake2 gates in wolfcrypt/src/hash.c wc_HashGetDigestSize() and wc_HashGetBlockSize();
* in wolfcrypt/test/test.c hash_test(), backfill missing Blake2 test coverage and separate blake2b from blake2s in typesHashBad[];
* in tests/api/test_hash.c, separate blake2b from blake2s in notCompiledHash[], sizeSupportedHash[], and sizeNotCompiledHash[].
* More PQC configurations
* More CMake setups
* Fix various bugs uncovered by these tests
Added some missing feature additions to CMake to make the example
`user_settings_all.` config file work for the CI test.
* Add `WOLFSSL_USER_SETTINGS` to CMake `options.h.in`
* Add CMake support for Dilithium
* Add user_settings.h support for aes_asm.S
* Add PKCS#11 support to CMake
* Minor ARM assembly port fixes
append thumb2 files, append inline c files with BUILD_ARMASM_INLINE
add all asm files. move curve25519 files under BUILD_CURVE25519
include remaining files
* Add support for CMake
* Add support for Zephyr
* Make sure the internal key state is properly handled in case a public
key is imported into a reloaded private key.
Signed-off-by: Tobias Frauenschläger <tobias.frauenschlaeger@oth-regensburg.de>
Make sure the file `sha3_asm.S` is compiled when `WOLFSSL_INTEL_ASM` is
enabled using CMake.
Signed-off-by: Tobias Frauenschläger <tobias.frauenschlaeger@oth-regensburg.de>
* Make sure wc_kyber implementation is compiled using CMake (also for
Zephyr)
* Fix compilation issue when Liboqs is also enabled
* Fix WOLFSSL_INTEL_ASM and WOLFSSL_ARM_ASM CMake options
Signed-off-by: Tobias Frauenschläger
<tobias.frauenschlaeger@oth-regensburg.de>
Improve the interface to liboqs by properly configuring and using the
RNG provided by WolfSSL from within liboqs.
Signed-off-by: Tobias Frauenschläger <t.frauenschlaeger@me.com>
Add `WOLFSSL_KEYGEN` option and override enable when `WOLFTPM` is
enabled
Also major reduction of variables for help messages. Override only
updates `VALUE`
Tobias Frauenschläger
David Garske
night1rider
Daniel Pouzzner
Tobias Frauenschläger
Sean Parkinson
Ruby Martin
Anthony Hu
Tobias Frauenschläger
oltolm
gojimmypi
Lealem Amedie
Mikhail Paulyshka
Andras Fekete
Iyán Méndez Veiga
JacobBarthelmeh
Marco Oliverio
Derzsi Dániel
Stefan Eissing
Hayden Roche
elms
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