diff options
Diffstat (limited to 'docs/hazmat/primitives/asymmetric')
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/dsa.rst | 3 | ||||
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/ec.rst | 4 | ||||
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/index.rst | 1 | ||||
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/rsa.rst | 2 | ||||
| -rw-r--r-- | docs/hazmat/primitives/asymmetric/utils.rst | 26 |
5 files changed, 33 insertions, 3 deletions
diff --git a/docs/hazmat/primitives/asymmetric/dsa.rst b/docs/hazmat/primitives/asymmetric/dsa.rst index 43741ede..df3c99fc 100644 --- a/docs/hazmat/primitives/asymmetric/dsa.rst +++ b/docs/hazmat/primitives/asymmetric/dsa.rst @@ -80,7 +80,8 @@ provider. >>> signature = signer.finalize() The ``signature`` is a ``bytes`` object, whose contents is DER encoded as -described in :rfc:`6979`. +described in :rfc:`6979`. This can be decoded using +:func:`~cryptography.hazmat.primitives.asymmetric.utils.decode_rfc6979_signature`. Verification ~~~~~~~~~~~~ diff --git a/docs/hazmat/primitives/asymmetric/ec.rst b/docs/hazmat/primitives/asymmetric/ec.rst index fd20cbb2..13ab7c11 100644 --- a/docs/hazmat/primitives/asymmetric/ec.rst +++ b/docs/hazmat/primitives/asymmetric/ec.rst @@ -53,7 +53,9 @@ Elliptic Curve Signature Algorithms >>> signature = signer.finalize() The ``signature`` is a ``bytes`` object, whose contents is DER encoded as - described in :rfc:`6979`. + described in :rfc:`6979`. This can be decoded using + :func:`~cryptography.hazmat.primitives.asymmetric.utils.decode_rfc6979_signature`. + .. class:: EllipticCurvePrivateNumbers(private_value, public_numbers) diff --git a/docs/hazmat/primitives/asymmetric/index.rst b/docs/hazmat/primitives/asymmetric/index.rst index 6a5228ba..24f0f5b1 100644 --- a/docs/hazmat/primitives/asymmetric/index.rst +++ b/docs/hazmat/primitives/asymmetric/index.rst @@ -11,3 +11,4 @@ Asymmetric algorithms rsa padding serialization + utils diff --git a/docs/hazmat/primitives/asymmetric/rsa.rst b/docs/hazmat/primitives/asymmetric/rsa.rst index a5cebb1d..6c96090a 100644 --- a/docs/hazmat/primitives/asymmetric/rsa.rst +++ b/docs/hazmat/primitives/asymmetric/rsa.rst @@ -271,4 +271,4 @@ this without having to do the math themselves. .. _`use 65537`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html .. _`at least 2048`: http://www.ecrypt.eu.org/documents/D.SPA.20.pdf .. _`OpenPGP`: https://en.wikipedia.org/wiki/Pretty_Good_Privacy -.. _`Chinese Remainder Theorem`: http://en.wikipedia.org/wiki/RSA_%28cryptosystem%29#Using_the_Chinese_remainder_algorithm +.. _`Chinese Remainder Theorem`: https://en.wikipedia.org/wiki/RSA_%28cryptosystem%29#Using_the_Chinese_remainder_algorithm diff --git a/docs/hazmat/primitives/asymmetric/utils.rst b/docs/hazmat/primitives/asymmetric/utils.rst new file mode 100644 index 00000000..6b348801 --- /dev/null +++ b/docs/hazmat/primitives/asymmetric/utils.rst @@ -0,0 +1,26 @@ +.. 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)``. + +.. 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. |