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* Document motivation for a KDF after key-exchange (#4005) (#4124)Jeremy Lainé2018-03-053-5/+64
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* switch RSA OAEP examples to use SHA256 (#4117)Paul Kehrer2018-02-221-4/+4
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* Reorder this to reflect Alex's Opinions On What Is Good (#4115)Alex Gaynor2018-02-221-2/+2
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* DH interfaces existed in 0.9 but we didn't implement until 1.7 (#4068)Paul Kehrer2018-01-051-9/+7
| | | | | | * DH interfaces existed in 0.9 but we didn't implement until 1.7 * sigh empty
* grammar nit, use a comma here (#4066)Alex Gaynor2017-12-291-1/+1
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* Add import default backend (#4061)Pablo Lefort2017-12-201-0/+1
| | | | | | * Add import default backend * Revert blank line in
* Don't use whirlpool as an example (#4053)Alex Gaynor2017-12-111-1/+1
| | | | | Both because it's weirdo crypto, but also because we don't even support it. Adhere to our documented policy of using good crypto for all examples
* let's talk about bits baby (#3956)Paul Kehrer2017-10-117-57/+62
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* Add support for AES XTS (#3900)Paul Kehrer2017-10-011-0/+41
| | | | | | | | | | | | | | | | | | | | | | | | * Add support for AES XTS We drop the non-byte aligned test vectors because according to NIST http://csrc.nist.gov/groups/STM/cavp/documents/aes/XTSVS.pdf "An implementation may support a data unit length that is not a multiple of 8 bits." OpenSSL does not support this, so we can't use those test vectors. * fix docs and pep8 * docs fix * the spellchecker is so frustrating * add note about AES 192 for XTS (it's not supported) * docs work * enforce key length on ECB mode in AES as well (thanks XTS) * a few more words about why we exclude some test vectors for XTS
* add ChaCha20 support (#3919)Paul Kehrer2017-09-281-0/+49
| | | | | | | | | | * add ChaCha20 support * review feedback * 256 divided by 8 is what again? * ...
* Switch NIST PDFs from nvlpubs to csrc which is HTTPS (#3929)Alex Gaynor2017-09-204-7/+7
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* Update the rest of the NIST urls to their new HTTPS homes (#3928)Alex Gaynor2017-09-203-4/+4
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* Fix `load_rsa_public_numbers` documentation (#3871)David Sanders2017-08-201-1/+1
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* Fix mistake in `RSAPublicKey.verify` documentation (#3872)David Sanders2017-08-201-1/+1
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* update docs to reflect #3364 (#3786)Paul Kehrer2017-07-171-1/+1
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* add AESGCM AEAD support (#3785)Paul Kehrer2017-07-172-0/+76
| | | | | | | | * add AESGCM AEAD support * remove stray newline * move AESGCM docs above CCM
* move tag_length to the AESCCM constructor (#3783)Paul Kehrer2017-07-161-11/+7
| | | | | | * move tag_length to the AESCCM constructor * review feedback
* AESCCM support (#3700)Paul Kehrer2017-07-161-0/+88
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* we forgot to document these DH methods (#3757)Paul Kehrer2017-07-061-0/+27
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* don't use long keys because they can be confusing wrt bits/bytes (#3734)Paul Kehrer2017-06-281-17/+17
| | | | | | | | * don't use long keys because they can be confusing wrt bits/bytes * make sure we say bytes everywhere * shorten the scrypt output to 32 bytes as well
* doc the relationship between PrivateKey and PrivateKeyWithSerialization (#3721)Paul Kehrer2017-06-244-8/+25
| | | | | | | | * doc the relationship between PrivateKey and PrivateKeyWithSerialization Or at least do it better. * let's talk about opaque keys
* Reorganize DHParameters and DHPublicKey *WithSerialization (#3722)Paul Kehrer2017-06-241-15/+13
| | | | | | | | * Reorganize DHParameters and DHPublicKey *WithSerialization fixes #3720 * fix up the changelog
* changelog entry and a few updates to the new DH params docs (#3718)Paul Kehrer2017-06-243-7/+8
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* Dh parameters serialization (#3504)Aviv Palivoda2017-06-243-0/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Support DH parameter serizalization - no X9.42 * Support X9.42 serialization - DER not working * Fix dhp_rfc5114_2.der Changing the DER parameters serialization after the fix in openssl commit a292c9f1b835 * DH parameters X9.42 DER serialization fixed * fix _skip_dhx_unsupported * document DH parameter_bytes * PEP8 fixes * Document load_pem_parameters * Document load_der_parameters * document ParameterFormat * Increase test coverage * Increase test covrage * Remove unneeded check * Fix typo * Fix error in load_der_parameters * Add load_pem_parameters and load_der_parameters to interfaces * CR fixes * Removed unverified phrase * Update version to 2.0 * Fix pep8 * Rename ParameterFormat.ASN1 to ParameterFormat.DHParameter * link pkcs3 * Add new line at end of file to serialization.rst * Rename DHparameters to PKCS3 * doc CR fix
* be clearer that 65537 is the right answer (#3714)Paul Kehrer2017-06-231-1/+2
| | | | | | | | * be clearer that 65537 is the right answer * Different language * remove trailing whitespace
* fix typo in docs for curve name (#3705)Paul Kehrer2017-06-141-1/+1
| | | fixes #3704
* It's a method you must call (#3696)Jean-Paul Calderone2017-06-091-1/+1
| | | Fix misworded guidance for how to serialize a private key to bytes.
* X25519 Support (#3686)Paul Kehrer2017-06-092-0/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * early days * sort of working * more things * remove private_bytes * public bytes, interface fix * load public keys * x25519 support basically done now * private_bytes is gone * some reminders * doctest this too * remove a thing that doesn't matter * x25519 supported checks * libressl has the NID, but a different API, so check for OpenSSL * pep8 * add missing coverage * update to use reasons * expand test a little * add changelog entry * review feedback
* ChaCha20Poly1305 support (#3680)Paul Kehrer2017-06-082-0/+80
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * chacha20poly1305 support * add chacha20poly1305 backend and some fixes * refactor * forgot to remove this * pep8 * review feedback and a lot of type/value checking * review feedback * raise unsupportedalgorithm when creating a ChaCha20Poly1305 object if it's not supported. * switch to ciphertext||tag * typo * remove a branch we don't need * review feedback * decrypts is *also* a word * use reasons
* scrypt can be doctested now that we're using 1.1.0 (#3688)Paul Kehrer2017-06-071-1/+1
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* fix symmetric encryption interfaces heading (#3676)Paul Kehrer2017-06-041-1/+1
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* document invalidtag (#3675)Paul Kehrer2017-06-041-0/+11
| | | | | | * document invalidtag * move invalidtag
* deprecate signer/verifier on asymmetric keys (#3663)Paul Kehrer2017-06-035-196/+105
| | | | | | * deprecate signer/verifier on asymmetric keys * review feedback, switch deprecated_call to work around a bug
* make signature and verification contexts error better re: prehashed (#3658)Paul Kehrer2017-06-021-0/+12
| | | | | | * make signature and verification contexts error better re: prehashed * code review feedback
* FreeBSD 10 and higher use Fortuna, not Yarrow (#3652)Jeroen Ruigrok van der Werven2017-06-011-2/+4
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* reorder the primitives list and improve a few titles (#3640)Paul Kehrer2017-05-293-9/+9
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* move MACContext to mac.py and eliminate interfaces.py (#3631)Paul Kehrer2017-05-296-87/+38
| | | | | | | | | | | | | * move MACContext to mac.py and eliminate interfaces.py finally * improve title * re-add and deprecate interfaces.MACContext * use pytest.warns instead of deprecated_call The pytest docs insist that deprecation warnings are handled differently and that you should use deprecated_call, but this works so okay then
* strongly encourage the use of fernet, document its limitation (#3623)Paul Kehrer2017-05-271-0/+3
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* Modify DH/ECDH examples to be explicit for DHE/ECDHE (#3622)Paul Kehrer2017-05-272-3/+32
| | | | | | | | * Modify DH/ECDH examples to be explicit for DHE/ECDHE Also add note to DH docs that you should probably use ECDH * give a reason
* Put the exchange method on the correct interface (#3591)Alex Gaynor2017-05-241-12/+12
| | | | | | * Put the exchange method on the correct interface * fixed links in docs
* Update the docs to not be redundant and wrong (#3593)Paul Kehrer2017-05-241-3/+0
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* add convenience methods for key_size on EC{Public,Private}Key (#3587)Paul Kehrer2017-05-231-0/+18
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* let's deprecate some hashes we should never have exposed (#3584)Paul Kehrer2017-05-231-16/+0
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* Document DH in serialization (#3569)Aviv Palivoda2017-05-231-1/+10
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* Let's help out the newbies (#3572)Cory Benfield2017-05-221-2/+5
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* remove multibackend (#3555)Paul Kehrer2017-05-202-52/+2
| | | | | | | | * remove multibackend * oops * goodbye pointless tests
* time to remove commoncrypto, fare thee well (#3551)Paul Kehrer2017-05-205-66/+0
| | | | | | | | | | | | | | | | * time to remove commoncrypto, fare thee well * remove even more * update the changelog * remove more things * don't need this function * remove CAST5 CTR tests since that was only supported in commoncrypto * assert a thing
* Fixes #3538 -- Make our OpenSSL EC verifier's implementation match the API ↵Alex Gaynor2017-05-101-14/+19
| | | | | | | | | | | | | | (#3539) * Document our real API for EC verification, not an accident * formatting consistency * fix the code itself * fixed class name * fixed a test too
* add a changelog entry for finalize_with_tag and move the note (#3531)Paul Kehrer2017-05-021-4/+4
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* postpone GCM authentication tag requirement until finalization (#3421)Philipp Gesang2017-05-021-8/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * postpone GCM authentication tag requirement until finalization Add a .finalize_with_tag() variant of the .finalize() function of the GCM context. At the same time, do not enforce the requirement of supplying the tag with the mode ctor. This facilitates streamed decryption when the MAC is appended to the ciphertext and cannot be efficiently retrieved ahead of decryption. According to the GCM spec (section 7.2: “Algorithm for the Authenticated Decryption Function”), the tag itself is not needed until the ciphertext has been decrypted. Addresses #3380 Signed-off-by: Philipp Gesang <philipp.gesang@intra2net.com> * disallow delayed GCM tag passing for legacy OpenSSL Old versions of Ubuntu supported by Cryptography ship a v1.0.1 of OpenSSL which is no longer supported by upstream. This library seems to cause erratic test failures with the delayed GCM tag functionality which are not reproducible outside the CI. Unfortunately OpenSSL v1.0.1 does not even document the required API (``EVP_EncryptInit(3)``) so there is no by-the-book fix. For backends of version 1.0.1 and earlier, verify the GCM tag at the same stage as before. Also, indicate to the user that late passing of GCM tags is unsupported by throwing ``NotImplementedError`` for these backend versions if - the method ``finalize_with_tag()`` is invoked, or - the mode ctor is called without passing a tag. Unit tests have been adapted to account for different backend versions.
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