This commit introduces several optimizations for elliptic curve operations in the secp256k1 library. Key changes include the implementation of the `ecmultStraussGLV` function for efficient scalar multiplication using the Strauss algorithm with GLV endomorphism, and the addition of windowed multiplication techniques to improve performance. Additionally, the benchmark tests have been updated to focus on the P256K1Signer implementation, streamlining the comparison process and enhancing clarity in performance evaluations.
This commit updates the BENCHMARK_REPORT.md to reflect the latest performance improvements following the implementation of optimized windowed multiplication for ECDH and verification. Key changes include a new generation date, updated operation times, and a detailed analysis of the performance of P256K1Signer, BtcecSigner, and NextP256K across various operations. Notably, P256K1Signer now shows significant improvements in ECDH (33% faster) and verification (20% faster), establishing it as the fastest pure Go implementation across all operations.
This commit introduces a new `ecmultWindowedVar` function that implements optimized windowed multiplication for scalar multiplication, significantly improving performance during verification operations. The existing `Ecmult` function is updated to utilize this new implementation, converting points to affine coordinates for efficiency. Additionally, the `EcmultConst` function is retained for constant-time operations. The changes also include enhancements to the generator multiplication context, utilizing precomputed byte points for improved efficiency. Overall, these optimizations lead to a notable reduction in operation times for cryptographic computations.
This commit deletes the `benchmark_results.txt` file, which contained performance metrics for various cryptographic operations. Additionally, the Go module has been updated to version 1.25.0, and new dependencies have been added, including `btcec` for enhanced signing capabilities. The `go.sum` file has also been updated to reflect these changes. A new benchmark report has been introduced to provide a comprehensive comparison of signer implementations.
