The order may be 1 bit larger than prime for some curves.
Handle this in calculation of maximum size of curve.
SP int _sp_mont_red(): ensure m->used is never 0 when doing default
implementaion.
CheckCertSignature
Free the dataASN before calling ConfirmSignature.
dataASN not needed at this point and ConfirmSignature uses lots of
memory.
DecodeCertInternal:
Free the dataASN before calling DecodeCertExtensions,
dataASN not needed at this point and DecodeCertExtensions uses more
memory.
ecc_verify_hash:
v doesn't need to be a new allocated variable - reuse w.
v is the modular reduction of x-ordinate to prime calculated at end.
New creation of mp_ints r and s to be minimal size must not be
re-initialized.
Changes to ASN.1 code to handle r and s being initialized and to not
initialize again.
Public API wc_ecc_is_point() needs to validate the parameters.
Ensure that the x and y are in range [0, p-1] and z is one (affine
ordinates).
Made the API a wrapper around existing calculation code.
When x-ordinate is a large negative, then it will spend large amounts of
time adding the prime to a large negative intermediate value.
fixes for clang-tidy/bugprone-macro-parentheses in wolfssl/wolfcrypt/sp_int.{c,h} and wolfcrypt/src/ecc.c;
fix for clang-analyzer-deadcode.DeadStores in olfcrypt/src/asn.c.
Tested with `./configure --disable-asm --enable-32bit --enable-asn=original --enable-cryptonly CFLAGS="-Wconversion -pedantic" && make`. Some progress with ASN template, but not complete.
Minimize use of stack.
Make very large stack allocations dynamic memory allocations unless
WOLFSSL_SP_NO_MALLOC.
ProcessBufferTryDecode() split up into a function for each type.
ProcessBufferTryDecodeRsa() decodes the data and gets key size rather
than having or allocating an RsaKey.
Added wc_RsaPrivateKeyValidate() that only validates the encoding is an
RSA key and returns the key size in bytes.
For SP int, only create sp_ints of required size in RSA and ECC
implementation. For WOLFSSL_SMALL_STACK, memory is allocated to have
just enough bytes and size is set to maximum supported. Otherwise,
relies on dynamic stack variables.
For ECC, MAX_ECC_BITS_USE used when dynamic stack variables not
supported. Significantly reduces memory usage when RSA/DH is also built.
Add macros to sp_int.h, tfm.h and integer.h to support declaring,
allocating, initializing and freeing mp_ints.
For integer.h, mp_int is always static as size is no more than 32 bytes.
For tfm.h, WOLFSSL_SMALL_STACK has a full mp_int allocated, otherwise
the full mp_int is put on the stack.
For sp_int.h with new macros, dynamically allocate sp_int to minimal
size when WOLFSSL_SMALL_STACK, or when dynamic stack variables, declare
them to be of minimal size or otherwise declare with a fixed max.
Added mp_bitsused(), for all implementations, to get the number of bits
available based on used. Included for RSA to get the size of the
modulus.
SP int now always uses dynamic stack variables if possible rather than
for builds with WOLFSSL_SP_SMALL.
Moved code out into separate functions so that stack allocations don't
happen when not going down code path.
linuxkm/module_exports.c.template: include wolfssl/wolfcrypt/wolfmath.h, to bring in wc_GetMathInfo() prototype;
src/ssl.c: move "Global pointer to constant BN on" to src/ssl_bn.c; and in wolfSSL_Cleanup(), call the new wolfSSL_BN_free_one() rather than using ad hoc cleanup logic;
src/ssl_bn.c: add bn_one and wolfSSL_BN_free_one();
src/ssl_asn1.c: fix bugprone-macro-parentheses in bufLenOrNull(); refactor wolfSSL_ASN1_TIME_diff() to avoid floating point math; use intermediate tm_year variable in wolfssl_asn1_time_to_tm() to avoid target-specific type conflicts on tm->tm_year; use "FALL_THROUGH", not "/* fall-through */", in wolfSSL_ASN1_TYPE_set (clang-diagnostic-implicit-fallthrough);
wolfcrypt/src/ecc.c: fix identicalInnerCondition in ecc_mul2add();
wolfcrypt/src/integer.c: refactor OPT_CAST()s in mp_grow() to unconditional casts as elsewhere, to mollify a confused cppcheck-all-intmath;
tests/api.c: reformat some overlong lines.
* set the client state correctly when wc_ecc_ctx_set_kdf_salt is called
* add test that covers wc_ecc_ctx_set_kdf_salt
* use shared key and smallstack to reduce test stack usage
* Fixed `PEM_BUFSIZE` macro redefined when building with coexist.
* Updated the `user_settings_all.h` and `user_settings_wolfboot_keytools.h` to include latest options.
* Improved API unit test error case checking where `TEST_RES_CHECK` is not used.
* Changed `TEST_SKIPPED` to unique value.
* Added CI tests for enable-all, small stack, and user setting templates.
For shared secrets, when a curve has a cofactor, the private key (in
range of order) is multiplied by the cofactor before use.
If there is a cofactor involved, check bit size of scalar against
modulus instead of order.
* Fix api.c build error with `NO_FILESYSTEM` and `WOLFSSL_CERT_EXT`.
* Fix for building tests/suites.c with static memory (missing `LARGEST_MEM_BUCKET`).
* Always expose `wc_ecc_set_rng` for compatibility.
* add Versal specific glue
The same structure of an "XSecure client" is used throughout the API's,
therefor define it once and re-use in all clients.
* integrate Versal AES-GCM engine
* integrate Versal SHA3-384 engine
* add versal support to tests
- There's no intermediate-hash API for Versal.
* add specific test with large AAD
Test only with `n*16 byte` wide chunks of AAD, so it gets processed in the
hardware engine.
* add specific test with misaligned AES-GCM arguments
* integrate Versal RSA engine
* disable failing RSA test-case when Xilinx Crypto is enabled
* introduce define `WOLFSSL_XILINX_CRYPT_VERSAL`
* integrate Versal TRNG engine
* allow using Versal TRNG w/o wolfcrypt DRBG
Versal TRNG already provides a HRNG mode which does the same as the
wolfcrypt DRBG implementation.
* add support for user-supplied nonce to Versal TRNG
* add `wc_XsecureErrorToString()` to map PLM error codes to messages.
* integrate Versal EcDSA engine
* update tests to work with Versal EcDSA
If deterministic K is enabled, the tests failed here since the Versal
EcDSA engine doesn't support the SECP256R1 curve yet.
* Xilinx crypto engines like aligned memory very much
Make this a default choice, not via the user configuration.
* add Xilinx-specific `WOLFSSL_MSG()` equivalent
`WOLFSSL_XIL_MSG()` does the same as `WOLFSSL_MSG()` besides waiting for
1 second before printing to stdout, since the PLM maybe prints to same and
outputs would be mixed up.
This waiting can be disabled by defining `WOLFSSL_XIL_MSG_NO_SLEEP`.
* add option to enable DPA CounterMeasures in AES-GCM crypto engine
* add "command mode" to Xilinx bare-metal example
* update Xilinx default user settings
* add script to execute benchmarks
* add scripts to create graphics
* add Vitis 2022.1 example projects
Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>
Fix Small Stack Cache option so that it works with various options
including ALT_ECC_SIZE.
Allow ALT_ECC_SIZE when SP math all or SP math is compiled in.
P-256/384/521.
New functions:
- sp_ecc_make_key_256_nb
- sp_ecc_make_key_384_nb
- sp_ecc_make_key_521_nb
- sp_ecc_secret_gen_256_nb
- sp_ecc_secret_gen_384_nb
- sp_ecc_secret_gen_521_nb
This commit also tweaks the testing for ECDSA testing in test.c. Instead of
testing with one of P-256/384/521, we test with all that are available.
