def preprocess_key(cls,hexpriv,pubkey_type):
# Key must be non-zero and less than group order of secp256k1 curve
if 0 < int(hexpriv,16) < cls.secp256k1_ge:
return hexpriv
else: # chance of this is less than 1 in 2^127
pk = int(hexpriv,16)
if pk == 0: # chance of this is 1 in 2^256
ydie(3,'Private key is zero!')
elif pk == cls.secp256k1_ge: # ditto
ydie(3,'Private key == secp256k1_ge!')
else:
ymsg('Warning: private key is greater than secp256k1 group order!:\n {}'.format(hexpriv))
return '{:064x}'.format(pk % cls.secp256k1_ge).encode()
def launch(what):
def my_dec(a):
try:
return a.decode('utf8')
except:
sys.stderr.write(
"Argument {!r} is not a valid UTF-8 string".format(a))
sys.exit(2)
import sys
sys.argv = map(my_dec, sys.argv)
if what in ('walletgen', 'walletchk', 'walletconv', 'passchg'):
what = 'wallet'
if what == 'keygen': what = 'addrgen'
try:
import termios
except: # Windows
__import__('mmgen.main_' + what)
else:
import os, atexit
if sys.stdin.isatty():
fd = sys.stdin.fileno()
old = termios.tcgetattr(fd)
def at_exit():
termios.tcsetattr(fd, termios.TCSADRAIN, old)
atexit.register(at_exit)
try:
__import__('mmgen.main_' + what)
except KeyboardInterrupt:
sys.stderr.write('\nUser interrupt\n')
except EOFError:
sys.stderr.write('\nEnd of file\n')
except Exception as e:
if os.getenv('MMGEN_TRACEBACK'):
raise
else:
try:
m = u'{}'.format(e[0])
except:
try:
m = u'{!r}'.format(e[0])
except:
m = u'{!r}'.format(e)
from mmgen.util import ydie
ydie(2, u'\nERROR: ' + m)
def preprocess_key(cls, hexpriv, pubkey_type):
# Key must be non-zero and less than group order of secp256k1 curve
if 0 < int(hexpriv, 16) < cls.secp256k1_ge:
return hexpriv
else: # chance of this is less than 1 in 2^127
pk = int(hexpriv, 16)
if pk == 0: # chance of this is 1 in 2^256
ydie(3, 'Private key is zero!')
elif pk == cls.secp256k1_ge: # ditto
ydie(3, 'Private key == secp256k1_ge!')
else:
ymsg(
'Warning: private key is greater than secp256k1 group order!:\n {}'
.format(hexpriv))
return '{:064x}'.format(pk % cls.secp256k1_ge).encode()