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SECP256K1

This is a fork of the secp256k1 library, with a few modifications to JNI bindings (the rest of the code should not be modified).

Modifications are:

  • implement missing "parse pubkey" method, which can be used to check that a public key is valid, and to decompress a public key
  • add a new method that returns signature in compact format
  • make verify handle both DER and compact signatures
  • add a new method to add 2 public keys
  • adapted ecdsaRecover to support compressed/uncompressed signatures

JNI

JNI libraries for:

  • Linux 64 bits
  • Windows 64 bits
  • Osx 64 bits

Building

Requirements

  • Docker
  • Autoconf, Autotool & Libtool

Build for each system (Linux, Mac & Windows)

./build.sh # Output at build/

Build for Linux

./build_linux.sh # Output at .libs/

Build for Mac

./build_mac.sh # Output at .libs/

Build for Windows

./build_win.sh # Output at .libs/

Testing

./test

Disclaimer

This project it's only used for jni bindings, if you want to use secp256k1 library go to the original repo