.. hazmat::
Asymmetric Utilities
====================
.. currentmodule:: cryptography.hazmat.primitives.asymmetric.utils
.. function:: decode_dss_signature(signature)
Takes in signatures generated by the DSA/ECDSA signers and returns a
tuple ``(r, s)``. These signatures are ASN.1 encoded ``Dss-Sig-Value``
sequences (as defined in :rfc:`3279`)
:param bytes signature: The signature to decode.
:returns: The decoded tuple ``(r, s)``.
:raises ValueError: Raised if the signature is malformed.
.. function:: encode_dss_signature(r, s)
Creates an ASN.1 encoded ``Dss-Sig-Value`` (as defined in :rfc:`3279`) from
raw ``r`` and ``s`` values.
:param int r: The raw signature value ``r``.
:param int s: The raw signature value ``s``.
:return bytes: The encoded signature.
dbf2c9fcd2d1c701c7e17'/>