def _gen_key_initctr(cls, b_password, b_salt):
# 16 for AES 128, 32 for AES256
keylength = 32
# match the size used for counter.new to avoid extra work
ivlength = 16
b_password = string2bytes(b_password)
if HAS_PBKDF2HMAC:
backend = default_backend()
kdf = PBKDF2HMAC(algorithm=c_SHA256(),
length=2 * keylength + ivlength,
salt=b_salt,
iterations=10000,
backend=backend)
b_derivedkey = kdf.derive(b_password)
else:
b_derivedkey = cls._create_key(b_password, b_salt, keylength,
ivlength)
b_key1 = b_derivedkey[:keylength]
b_key2 = b_derivedkey[keylength:(keylength * 2)]
b_iv = b_derivedkey[(keylength * 2):(keylength * 2) + ivlength]
return b_key1, b_key2, hexlify(b_iv)
def gen_key_initctr(self, password, salt):
# 16 for AES 128, 32 for AES256
keylength = 32
# match the size used for counter.new to avoid extra work
ivlength = 16
if HAS_PBKDF2HMAC:
backend = default_backend()
kdf = PBKDF2HMAC(algorithm=c_SHA256(),
length=2 * keylength + ivlength,
salt=salt,
iterations=10000,
backend=backend)
derivedkey = kdf.derive(password)
else:
derivedkey = self.create_key(password, salt, keylength, ivlength)
key1 = derivedkey[:keylength]
key2 = derivedkey[keylength:(keylength * 2)]
iv = derivedkey[(keylength * 2):(keylength * 2) + ivlength]
return key1, key2, hexlify(iv)
def gen_key_initctr(self, password, salt):
# 16 for AES 128, 32 for AES256
keylength = 32
# match the size used for counter.new to avoid extra work
ivlength = 16
if HAS_PBKDF2HMAC:
backend = default_backend()
kdf = PBKDF2HMAC(
algorithm=c_SHA256(),
length=2 * keylength + ivlength,
salt=salt,
iterations=10000,
backend=backend)
derivedkey = kdf.derive(password)
else:
derivedkey = self.create_key(password, salt, keylength, ivlength)
key1 = derivedkey[:keylength]
key2 = derivedkey[keylength:(keylength * 2)]
iv = derivedkey[(keylength * 2):(keylength * 2) + ivlength]
return key1, key2, hexlify(iv)
def _gen_key_initctr(cls, b_password, b_salt):
# 16 for AES 128, 32 for AES256
keylength = 32
# match the size used for counter.new to avoid extra work
ivlength = 16
if HAS_PBKDF2HMAC:
backend = default_backend()
kdf = PBKDF2HMAC(
algorithm=c_SHA256(),
length=2 * keylength + ivlength,
salt=b_salt,
iterations=10000,
backend=backend)
b_derivedkey = kdf.derive(b_password)
else:
b_derivedkey = cls._create_key(b_password, b_salt, keylength, ivlength)
b_key1 = b_derivedkey[:keylength]
b_key2 = b_derivedkey[keylength:(keylength * 2)]
b_iv = b_derivedkey[(keylength * 2):(keylength * 2) + ivlength]
return b_key1, b_key2, hexlify(b_iv)