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Playing with private-keys in PyBtcEngine
from pybtcengine import *
# Create new private key and get its address information
print 'Creating new address:'
newAddr = PyBtcAddress().generateNew()
print ' Private key (integer):', newAddr.privKeyInt
print ' Private key (hex, BE):', int_to_hex(newAddr.privKeyInt, widthBytes=32, endOut=BIGENDIAN)
privKeyBinary33 = '\x80' + int_to_binary(newAddr.privKeyInt, widthBytes=32, endOut=BIGENDIAN)
chksum = hash256(privKeyBinary33)
privKeyEnc37 = privKeyBinary33 + chksum[:4]
privKeyBase58 = binary_to_addrStr(privKeyEnc37)
print ' Encoded privkey:', binary_to_hex(privKeyEnc37)
print ' Base58 privkey: ', binary_to_addrStr(privKeyEnc37)
# Get back to the raw private key from encoded format
print '\nRecovering private key from base58 encoding:'
pk37 = addrStr_to_binary(privKeyBase58)
leadByte, privKeyBin, chk = pk37[:1], pk37[1:33], pk37[33:]
verifyKey = hash256(leadByte+privKeyBin).startswith(chk)
if verifyKey:
print ' Valid checksum!'
print ' Checksum does not match!'
privKeyInt = binary_to_int(privKeyBin, BIGENDIAN)
addr = PyBtcAddress().createFromPrivateKey(privKeyInt)
print ' Recovered address information:'
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