def mnemonic_to_seed(mnemonic_phrase,passphrase=u''):
try:
from hashlib import pbkdf2_hmac
def pbkdf2_hmac_sha256(password,salt,iters=2048):
return pbkdf2_hmac(hash_name='sha512',password=password,salt=salt,iterations=iters)
except:
try:
from Crypto.Protocol.KDF import PBKDF2
from Crypto.Hash import SHA512,HMAC
def pbkdf2_hmac_sha256(password,salt,iters=2048):
return PBKDF2(password=password,salt=salt,dkLen=64,count=iters,prf=lambda p,s: HMAC.new(p,s,SHA512).digest())
except:
try:
from pbkdf2 import PBKDF2
import hmac
def pbkdf2_hmac_sha256(password,salt,iters=2048):
return PBKDF2(password,salt, iterations=iters, macmodule=hmac, digestmodule=hashlib.sha512).read(64)
except:
raise RuntimeError("No implementation of pbkdf2 was found!")
return pbkdf2_hmac_sha256(password=mnemonic_phrase,salt='mnemonic'+passphrase)
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