starkbank/ecdsa
Pure-PHP ECDSA implementation compatible with OpenSSL. Fast signing/verification using Jacobian coordinates and optimized scalar multiplication. Security features include RFC6979 deterministic nonces, low-S normalization, on-curve validation, and hash truncation. Supports secp256k1 and P-256; requir...
fast openSSL-compatible implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA)
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