libsecp256k1 v0.5.0: Faster Key Generation & Signing
libsecp256k1 is an optimized C library for ECDSA signatures and secret/public key operations on curve secp256k1.
- "This release includes algorithmic improvements which increase the speed of key generation and signing. At the same time, the binary size has been reduced significantly, which we expect to benefit embedded users in particular. Moreover, a new function to sort public keys has been added."
What's new
Added
- New function
secp256k1_ec_pubkey_sortthat sorts public keys using lexicographic (of compressed serialization) order.
Changed
- The implementation of the point multiplication algorithm used for signing and public key generation was changed, resulting in improved performance for those operations.
- The related configure option
--ecmult-gen-precisionwas replaced with--ecmult-gen-kb(ECMULT_GEN_KBfor CMake). - This changes the supported precomputed table sizes for these operations. The new supported sizes are 2 KiB, 22 KiB, or 86 KiB (while the old supported sizes were 32 KiB, 64 KiB, or 512 KiB).
- The related configure option
ABI Compatibility
The ABI is backward compatible with versions 0.4.x and 0.3.x.
