.. hazmat::
Asymmetric Utilities
====================
.. currentmodule:: cryptography.hazmat.primitives.asymmetric.utils
.. function:: decode_rfc6979_signature(signature)
Takes in :rfc:`6979` signatures generated by the DSA/ECDSA signers and
returns a tuple ``(r, s)``.
:param bytes signature: The signature to decode.
:returns: The decoded tuple ``(r, s)``.
:raises ValueError: Raised if the signature is malformed.
.. function:: encode_rfc6979_signature(r, s)
Creates an :rfc:`6979` byte string from raw signature values.
:param int r: The raw signature value ``r``.
:param int s: The raw signature value ``s``.
:return bytes: The encoded signature.
: cloud-email/cryptography