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6 changes: 0 additions & 6 deletions src/ecdsa/_compat.py
Original file line number Diff line number Diff line change
Expand Up @@ -23,9 +23,6 @@ def normalise_bytes(buffer_object):
# flake8 runs on py3 where `buffer` indeed doesn't exist...
return buffer(buffer_object) # noqa: F821

def hmac_compat(ret):
return ret

if (
sys.version_info < (2, 7)
or sys.version_info < (2, 7, 4)
Expand Down Expand Up @@ -92,9 +89,6 @@ def int_to_bytes(val, length=None, byteorder="big"):

else:

def hmac_compat(data):
return data

def normalise_bytes(buffer_object):
"""Cast the input into array of bytes."""
return memoryview(buffer_object).cast("B")
Expand Down
7 changes: 3 additions & 4 deletions src/ecdsa/rfc6979.py
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,6 @@
import hmac
from binascii import hexlify
from .util import number_to_string, number_to_string_crop, bit_length
from ._compat import hmac_compat


# bit_length was defined in this module previously so keep it for backwards
Expand Down Expand Up @@ -59,9 +58,9 @@ def generate_k(order, secexp, hash_func, data, retry_gen=0, extra_entropy=b""):
holen = hash_func().digest_size
rolen = (qlen + 7) // 8
bx = (
hmac_compat(number_to_string(secexp, order)),
hmac_compat(bits2octets(data, order)),
hmac_compat(extra_entropy),
number_to_string(secexp, order),
bits2octets(data, order),
extra_entropy,
)

# Step B
Expand Down