LuaECC

luaecc is the lua verion of easy ecc,but only support secp256k1.

some operations are accquired to make calculate faster,and you can find some numbers are coded in functions.

luaecc implement basic generate key pair, sign and verify ,that satisfy basic develop.

Prerequisites

• lua: any one of the latest major lua-releases.

Installation

• install luarocks

    https://luarocks.org/#quick-start
  

• install bits with luarocks

    luarocks install luabitop

Generate private key pub key pair

ecc_make_key(pubkey,privkey)

Sign

ecdsa_sign(p_publicKey, p_hash, p_signature)

Verify

ecdsa_verify(p_publicKey, p_hash, p_signature)

Demo

  
    local pub = {}
    local priv = {}
    local signature = {}
    ecc_make_key(pub,priv)
    print()
    local hash = {}
    
    -- just for test . this means "test"*8
    --for i = 1 ,8 do
    --    hash[(i-1)*4+1]= 116
    --    hash[(i-1)*4+2]= 101
    --    hash[(i-1)*4+3]= 115
    --    hash[(i-1)*4+4]= 116
    --end
    hash = str2bytes("testtesttesttesttesttesttesttest")
    print(bytes2hex(priv))
    print(bytes2hex(pub))
    ecdsa_sign(priv,hash,signature)
    local sigstr = ""
    
    for i = 1,64 do
        sigstr = sigstr ..string.format("%x",signature[i]/16)
        sigstr = sigstr ..string.format("%x",signature[i]%16)
    end
    print("signature ",string.lower(sigstr))
    print(ecdsa_verify(pub,hash,signature))