Python implementation of ECDSA on secp256k1 curve: elliptic curve used in bitcoin

Instructions

The code can be run in two modes:

• Debug Mode

  • Command:

    python main.py
    

    Sample Output:

    test vectors passed
    

• Normal Mode

  1. Generate private key:

  python main.py gen_priv_key --pkf pkfile
  #pkfile = file to store private key
  

  Sample Output:

  private key file:  pkfile
  

  2. Generate public key from private key:

  python main.py gen_pub_key --pkf pkfile --pubf pubkfile 
  #pkfile = private key file obtained during step 1
  #pubkfile = file to store public key
  

  Sample Output:

  public key file:  pubkfile
  

  3. Sign using private key:

  python main.py sign --pkf pkfile --inputf data.txt --sigf sigfile 
  #pkfile = private key file obtained during step 1
  #data.txt = file to sign
  #sigfile = file to store signature
  

  Sample Output:

  private key file:  pkfile
  file name:  data.txt
  signature file:  sigfile
  

  4. Verify signature using public key:

  python main.py verify --pubf pubkfile --inputf data.txt --sigf sigfile 
  #pubkfile = public key file obtained during step 2
  #data.txt = file to verify
  #sigfile = signature file obtained during step 3
  

  Sample Output:

  public key file:  pubkfile
  file name:  data.txt
  signature file:  sigfile
  Verify:  True