Quote from: WanderingPhilospher on Today at 05:45:16 AM

@fxsniper

Here is the code I told you I would upload. It's not the exact one I was looking for but it is based on the same principle. Easy to change the range you want to search through. I modified my code to search for the RIPEMD of the address I was looking for. Shaves a few milliseconds off versus processing all the way to the address. I created this probably 6 months ago and I am sure it is not the most efficient coding. Hopefully it gives you some ideas on how to tweak and make exactly what you are wanting.

Code:

#Amateur, very amateur coding by the Wandering Philosopher
#Tested with Python 2.7
import binascii, hashlib, base58, sys, ecdsa, codecs, os, random
import time
import timeit
#Enter the RIPEMD160 of the address you want to search for; make sure it is in LOWERCASE
ripetofind = '3ee4133d991f52fdf6a25c9834e0745ac74248a4'

def compressed_RIPEMD(privkey):
   start_time = timeit.default_timer()
   pvk_to_bytes = codecs.decode (privkey, 'hex')

   #Generates the public key
   key = ecdsa.SigningKey.from_string (pvk_to_bytes, curve=ecdsa.SECP256k1).verifying_key
   key_bytes = key.to_string()
   key_hex = codecs.encode(key_bytes, 'hex')

   if(ord(bytearray.fromhex(key_hex[-2:])) % 2 == 0):
   #If the last byte of Y is Even, add '02'
   public_key_compressed = '02' + key_hex[0:64]

   #Making SHA-256 of compressed pubkey and then RIPEMD-160
   public_key_in_bytes = codecs.decode(public_key_compressed, 'hex')
   sha256_public_key_compressed = hashlib.sha256(public_key_in_bytes)
   sha256_public_key_compressed_digest = sha256_public_key_compressed.digest()

   ripemd160 = hashlib.new('ripemd160')
   ripemd160.update(sha256_public_key_compressed_digest)
   ripemd160_digest = ripemd160.digest()
   ripemd160_hex = codecs.encode(ripemd160_digest, 'hex')

   else:
   #If the last byte of Y is Odd, add '03'
   public_key_compressed = '03' + key_hex[0:64]

   #Making SHA-256 of compressed pubkey and then RIPEMD-160
   public_key_in_bytes = codecs.decode(public_key_compressed, 'hex')
   sha256_public_key_compressed = hashlib.sha256(public_key_in_bytes)
   sha256_public_key_compressed_digest = sha256_public_key_compressed.digest()

   ripemd160 = hashlib.new('ripemd160')
   ripemd160.update(sha256_public_key_compressed_digest)
   ripemd160_digest = ripemd160.digest()
   ripemd160_hex = codecs.encode(ripemd160_digest, 'hex')
   elapsed = timeit.default_timer() - start_time
   #Prints status and numbers on screen. Comment out both sys.stdout lines below if not wanted and the countall +=1 ; I liked to know it was working/running.
   sys.stdout.write("\r" + " Key every: " + str(elapsed)[:7] + " seconds " + " Random RIPEMD160s: " + ripemd160_hex + " # of Keys: " + str(countall))
   sys.stdout.flush()
   fwrite = open('KEYSFOUND.txt', 'a')
   if ripemd160_hex == ripetofind:
   fwrite.write('Key: ' + randomprivkey + ' ' + ripemd160_hex + '\n' )

#Always leave countall = 0 below. If you want the program to run unlimited, comment out the countall +=1 down below
countall = 0
while (countall < 100000000000000):
   if __name__== "__main__":

   #Enter the range you want to search through below
   low = 0x8000000000000000
   high = 0xFFFFFFFFFFFFFFFF
   #high = 0xfffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364140
   randomprivkey = hex( random.randrange( low, high ) ).lstrip("0x").rstrip("L").zfill(64)
   countall +=1
   compressed_RIPEMD(randomprivkey)

Thanks

this code find RIPEMD-160 hash before convert to address right

if(ord(bytearray.fromhex(key_hex[-2:])) % 2 == 0):

TypeError: fromhex() argument must be str, not bytes