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|
libtomcrypt
===========
| Version: ``v1.18.2``
| Repository: https://github.com/libtom/libtomcrypt/
| Docs:
Primitives
----------
Offers ECDH and ECDSA on the `curves <https://github.com/libtom/libtomcrypt/blob/v1.18.2/src/pk/ecc/ecc.c>`__: SECP112r1, SECP128r1, SECP160r1, P-192, P-224, P-256, P-384, P-521.
ECDH
^^^^
KeyGen:
- Short-Weierstrass
- `Simple ladder <https://github.com/libtom/libtomcrypt/blob/v1.18.2/src/pk/ecc/ltc_ecc_mulmod_timing.c#L35>`__ via ``ecc_make_key -> ecc_make_key_ex -> ecc_ptmul -> ltc_ecc_mulmod_timing``.
- jacobian, `dbl-1998-hnm <https://github.com/libtom/libtomcrypt/blob/v1.18.2/src/pk/ecc/ltc_ecc_projective_dbl_point.c#L32>`__ via ltc_ecc_projective_dbl_point
- jacobian, `add-1998-hnm <https://github.com/libtom/libtomcrypt/blob/v1.18.2/src/pk/ecc/ltc_ecc_projective_add_point.c#L33>`__ via ltc_ecc_projective_add_point
Derive:
- Same as Keygen via ``ecc_shared_secret -> ecc_ptmul -> ltc_ecc_mulmod_timing``.
ECDSA
^^^^^
Keygen:
- Same as ECDH.
Sign:
- Same as Keygen via ``ecc_sign_hash -> _ecc_sign_hash -> ecc_make_key_ex``.
Verify:
- `Shamir's trick <https://github.com/libtom/libtomcrypt/blob/v1.18.2/src/pk/ecc/ltc_ecc_mul2add.c#L35>`__ via ``ecc_verify_hash -> _ecc_verify_hash -> ecc_mul2add`` or two separate sliding windows.
- Same coords and formulas as KeyGen.
|
