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* Fixes #4333 -- added support for precert poison extension (#4442)Alex Gaynor2018-08-311-0/+6
| | | | | | | | | | | | | | * Fixes #4333 -- added support for precert poison extension * Make work on all OpenSSL versions * fixed flake8 + docs * fix for older OpenSSLs * document this * spell
* refactor ocsp request parsing and generation to support only one cert (#4439)Paul Kehrer2018-08-311-10/+10
| | | | | | | | * refactor ocsp request parsing and generation to support only one cert * small doc change * notimplementederror
* Fixed two memory leaks in x509 csr extensions (#4434)Alex Gaynor2018-08-311-3/+8
| | | | | | | | | | | | * Fixed a memory leak in x.509 OCSP no check * Fix the _actual_ leak * Speed up symbolizations * Disable backtrace by default, because it doesn't work on Windows * line length
* make an ocsp request (#4402)Paul Kehrer2018-08-301-0/+16
| | | | | | | | | | | | | | | | * make an ocsp request * update test, add docs * make it an OCSPRequestBuilder * review feedback and more tests * make it a class * empty commit to retrigger * type check
* OCSP request parsing (#4393)Paul Kehrer2018-08-151-0/+11
| | | | | | | | | | | | * add public_bytes to OCSPRequest * review feedback * OCSP request parsing * change some prose * add __len__ as a required method
* Future proofing use of the six python version constants (#4238)Eric Brown2018-05-141-2/+2
| | | | | | | | | | | | | | | * Future proofing use of the six python version constants After reading [1], noticed that cryptography uses a lot of if six.PY3 blocks. The issue with this is that whenever Python 4 is released, this code in the else block will be executed even though it was only intended for Python 2. [1] http://astrofrog.github.io/blog/2016/01/12/stop-writing-python-4-incompatible-code/ Signed-off-by: Eric Brown <browne@vmware.com> * Use not PY2 instead
* Validate the public/private halves of EC keys on import. (#4241)David Benjamin2018-05-141-3/+4
| | | | | | | | | | | | | | | | | | * Validate the public/private halves of EC keys on import. OpenSSL's API is a little finicky. If one sets the public key before the private key, it does not validate that they match. If set in the other order, it does validate this. In particular, KASValidityTest_ECCStaticUnified_NOKC_ZZOnly_init.fax describes error code 7 as: Result = F (7 - IUT's Static private key d changed-prikey validity) Reordering the two operations makes those tests to fail on key import, which is what CAVP appears to have intended. * Wrap to 79 rather than 80 columns
* fixed variable name to be correct (#4226)Alex Gaynor2018-05-111-3/+3
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* update link to draft rfc (#4214)Alex Gaynor2018-05-021-1/+1
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* fix a memory leak in ec derive_private_key (#4096)Paul Kehrer2018-02-041-2/+3
| | | | | | | | * fix a memory leak in ec derive_private_key fixes #4095 * pep8!
* Use `BN_clear_free` in places where `BN_free` is being used (#4072)Tux2018-01-051-2/+2
| | | | | | | | | | * Expose BN_clear_free * Use BN_clear_free in test_int_to_bn * Use BN_clear_free in lieu of BN_free * Use BN_free on public values
* just a quick confirmation that it really is an x25519 evp key (#4070)Paul Kehrer2018-01-051-0/+3
| | | | | | * just a quick confirmation that it really is an x25519 evp key * openssl assert. take that python -O
* nit: line wrapping change (#4004)Alex Gaynor2017-10-281-2/+1
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* Add support for AES XTS (#3900)Paul Kehrer2017-10-011-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | * 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 Kehrer2017-09-281-1/+6
| | | | | | | | | | * add ChaCha20 support * review feedback * 256 divided by 8 is what again? * ...
* both parse and encode the ASN1 string type for Name attributes (#3896)Paul Kehrer2017-09-251-6/+0
| | | | | | | | | | | | | | | * both parse and encode the ASN1 string type for Name attributes Previously cryptography encoded everything (except country names) as UTF8String. This caused problems with chain building in libraries like NSS where the subject and issuer are expected to match byte-for-byte. With this change we now parse and store the ASN1 string type as a private _type in NameAttribute. We then use this to encode when issuing a new certificate. This allows the CertificateBuilder to properly construct an identical issuer and fixes the issue with NSS. * make the sentinel private too
* [WIP] add support for the TLSFeature extension in x509 (#3899)Paul Kehrer2017-09-101-7/+12
| | | | | | | | | | | | | | | | | | * add support for the TLSFeature extension in x509 This extension is used for OCSP Must-Staple. * fix changelog link * pep8 * refactor to support the sequence properly and add status_request_v2 * update some language * add test vector, implement eq/ne/hash on TLSFeature * address review comments
* RSA OAEP label support for OpenSSL 1.0.2+ (#3897)Paul Kehrer2017-09-081-1/+5
| | | | | | | | | | * RSA OAEP label support for OpenSSL 1.0.2+ * changelog * move around tests, address review feedback, use backend supported method * unsupported padding catches this now
* allow p % 24 == 23 when generator == 2 in DH_check (#3768)Paul Kehrer2017-07-091-2/+15
| | | | | | | | | | * allow p % 24 == 23 when generator == 2 in DH_check * short url * update and expand comments * even better language!
* use an instance in aead_cipher_supported (#3772)Paul Kehrer2017-07-091-2/+2
| | | | | | | | * use an instance in aead_cipher_supported * test for chacha20poly1305 compatibility via init exception * pep8
* stop using backend methods for chacha (#3765)Paul Kehrer2017-07-081-16/+2
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* change chacha20poly1305_supported to aead_cipher_supported (#3762)Paul Kehrer2017-07-081-1/+5
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* make the aead work a bit more generic (#3761)Paul Kehrer2017-07-081-5/+5
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* disallow MD5 in CertificateBuilder and CertificateSigningRequestBuilder (#3738)Paul Kehrer2017-06-301-0/+24
| | | | | | | | | | | | * disallow MD5 in CertificateBuilder and CertificateSigningRequestBuilder * only error on ECDSA and DSA lots of duplication in tests here, bleh * remove changelog entry, also handle this for CRLBuilder * pep8
* Fixed a memory leak in EC private numbers (#3741)Alex Gaynor2017-06-301-2/+4
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* Fix for leaking memory in EllipticCurvePublicNumbers.public_key() (#3732)Alex Gaynor2017-06-281-3/+3
| | | | | | | | | | * Test for leaking memory in EllipticCurvePublicNumbers.public_key() * Fix the memory leak As far as I can tell, from spelunking in the OpenSSL source (as you do), EC_KEY_set_public_key_affine_coordinates doesn't take ownership of "x" or "y". https://github.com/openssl/openssl/blob/master/crypto/ec/ecp_smpl.c#L362-L420 is the place in the source I found that actually uses "x" and "y". * Unused imports
* Dh parameters serialization (#3504)Aviv Palivoda2017-06-241-0/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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
* X25519 Support (#3686)Paul Kehrer2017-06-091-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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 Kehrer2017-06-081-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 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
* Simplify int to hex string conversion (#3628)Alex Gaynor2017-05-281-3/+3
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* fix libressl error/refactor some error handling (#3609)Paul Kehrer2017-05-261-33/+30
| | | | | | | | | | | | | | | | | | | | | | | * add libre so I can see the error * add the libre error needed and refactor error handling a bit We were historically matching on lib + func + reason, but func is somewhat unstable so now we match on lib + reason only. Of course, in this case libressl changed both lib and reason so it wouldn't have mattered. All error handling from the error queue in openssl is an illusion * fix a typo, probably an unneeded branch * review feedback * refactor tests to support libressl insert additional rant about libre here, although admittedly these tests were assuming stability where openssl itself guarantees none * better assert, fix flake8
* Document when OpenSSL changed its default (#3611)Alex Gaynor2017-05-251-1/+1
| | | | | | | | | | * Figure out when this came into existance by deleting it * Revert "Figure out when this came into existance by deleting it" This reverts commit 2fb9b8e104742bfa12eb5feedccebacfc23c66bb. * Clearly document when this became true
* remove key check (#3473)Ofek Lev2017-04-011-3/+0
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* Ec is a thing (#3453)Alex Gaynor2017-03-151-14/+3
| | | | | | | | | | | | | | | | * We always have EC * We always have ECDH * We always have ECDSA * We always have EC codes * This can go as well * And this * unused import
* More ifdef death (#3450)Alex Gaynor2017-03-141-5/+2
| | | | | | | | | | * CMAC is always supported * TLSv1.2 is always supported * Releasing buffers is always supported * Nonsense IE SSLv2 nonsens is always supported
* reverts a change to our exceptions (#3429)Paul Kehrer2017-03-091-21/+1
| | | | | Trying to be too specific about why key loading fails is very difficult when you're using the same logic across DH, EC, RSA, and DSA. This makes it less fancy.
* Refs #3430 -- fixed a memory leak in extension parsing for CRL dp (#3431)Alex Gaynor2017-03-091-2/+3
| | | | | | | | | | * Refs #3430 -- fixed a memory leak in extension parsing for CRL dp * same fix for policy info * make this private * consistency cleanup
* DH subgroup order (q) (#3369)Aviv Palivoda2017-03-051-11/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Support DH q (subgroup order) * Change RFC5114.txt to NIST format * Add tests for DH q * Update docs for DH q * Fix pep8 * Improve test covergae for DH q * Create _dh_params_dup that copy q if DHparams_dup don't On OpenSSL < 1.0.2 DHparams_dup don't copy q. _dh_params_dup call DHparams_dup and if the version is smaller than 1.0.2 copy q manually * Copy q manually on libressl * Add to test vectors serialized RFC5114 2048 bit DH parameters with 224 bit subgroup * Support serialization of DH with q * Add tests for serialization of DH with q * Support DH serialization with q only if Cryptography_HAS_EVP_PKEY_DHX is true * Raise exception when trying to serialize DH X9.42 when not supported * raise unsupported key type when deserilizing DH X9.42 if not supported * pep8 fixes * Fix test_serialization * Add dhx_serialization_supported method to DHBacked * document q in dh_parameters_supported * Rename dhx_serialization_supported to dh_x942_serialization_supported
* Fixed #3422 -- Remove some legacy code which is now in 1.0.1 (#3423)Alex Gaynor2017-03-011-48/+8
| | | | | | | | | | * Fixed #3422 -- Remove some legacy code which is now in 1.0.1 * _int_to_bn doesnt like negatives * minimize the diff * some additional cleanup
* switch the PEM password callback to a C implementation (#3382)Paul Kehrer2017-02-131-71/+22
| | | | | | | | | | | | | | | * switch the PEM password callback to a C implementation Calling from C to Python is fraught with edge cases, especially in subinterpreter land. This commit moves the PEM password callback logic into a small C function and then removes all the infrastructure for the cffi callbacks (as we no longer have any) * review feedback and update tests * rename the struct * aaand one more fix
* enforce password must be bytes when loading PEM/DER asymmetric keys (#3383)Paul Kehrer2017-02-081-0/+2
| | | | | | | | | | * enforce password must be bytes when loading PEM/DER asymmetric keys Previously we were using an ffi.buffer on the Python string, which was allowing text implicitly, but our documentation explicitly requires bytes. * add changelog entry
* DH serialization (#3297)Aviv Palivoda2017-02-071-3/+25
| | | | | | | | | | | | | | | | | | * DH keys support serialization * Add DH serialization documentation * Add tests for DH keys serialization in DER encoding * update version to 1.8 * Allow only SubjectPublicKeyInfo serialization * Remove support in TraditionalOpenSSL format * Fix pep8 * Refactor dh serialization tests
* Backport DH_check from OpenSSL 1.1.0. (#3375)Mark Williams2017-02-031-2/+2
| | | | | | | | | | | | | | | | | | | * Backport DH_check from OpenSSL 1.1.0. OpenSSL 1.0.2's DH_check considers the q parameter, allowing it validate more generators and primes; however, OpenSSL 1.1.0's DH_check includes code to handle errors in BN functions, so it's preferred. * Wrap DH_Check when using OpenSSL 1.1.0 or higher. * Adding DH_CHECK_* values missing from older OpenSSLs * Defensively guard DH_CHECK_* definitions with ifndef. This will prevent duplicate definitions when LibreSSL supports a version of DH_check that can return these. * Document the OpenSSL of origin for the DH_check code
* add memory limit check for scrypt (#3328)Paul Kehrer2017-01-051-4/+5
| | | | | | | | | | * add memory limit check for scrypt fixes #3323 * test a pass * move _MEM_LIMIT to the scrypt module
* openssl backend: s/unserialize/deserialize/ in exception messages (#3339)Jan-Philip Gehrcke2016-12-281-2/+2
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* Inline a pair of functions that became trivial post-1.0.0 (#3336)Alex Gaynor2016-12-251-7/+1
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* add openssl_version_number & doc openssl_version_text (#3329)Paul Kehrer2016-12-211-0/+3
| | | | | | | | | | * add openssl_version_number & doc openssl_version_text fixes #3315 * more docs + actually assert on the test... * text
* Drop 1.0.0 (#3312)Alex Gaynor2016-12-131-63/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * delete the 1.0.0 support * drop the version check * drop the AES-CTR stuff * Update the example * openssl truncates for us now * delete unused test * unused imports * Remove a bunch of conditional bindings for NPN * no more 1.0.0 builders * libressl fix * update the docs * remove dead branches * oops * this is a word, damnit * spelling * try removing this * this test is not needed * unused import
* New osrandom_engine in C (#3229)Christian Heimes2016-12-091-12/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * New osrandom_engine in C Inspired by Python/random.c and the old implementation. Signed-off-by: Christian Heimes <christian@python.org> * osrandom_engine * Fix naming bug caused by search 'n replace mistake * Make it easier to override osrandom auto-detection * Add engine ctrl and backend API to get implementation from ENGINE Signed-off-by: Christian Heimes <christian@python.org> * Better test coverage, documentation, LICENSE Signed-off-by: Christian Heimes <christian@python.org> * Coverage is hard. Signed-off-by: Christian Heimes <christian@python.org> * * enable win32 check * read() returns size_t Signed-off-by: Christian Heimes <christian@python.org> * Add macOS to spelling list. Remove dead code from header file. Signed-off-by: Christian Heimes <christian@python.org> * remove CCRandomGenerateBytes path and update getentropy to work on macOS This change allows us to test all the engines in our CI: * getentropy (tested by macOS sierra) * getrandom (tested on several linux builders) * /dev/urandom (tested on FreeBSD, OS X 10.11 and below, & older linux) * CryptGenRandom (tested on windows builders) I also fixed bugs preventing compilation in the getentropy code * getentropy() returns int and is restricted to 256 bytes on macOS, too. Signed-off-by: Christian Heimes <christian@python.org> * add versionadded * Re-add import of os module * Fixes related to Alex's recent review. Signed-off-by: Christian Heimes <christian@python.org> * Add error reporting and fail for EAGAIN Add error reporting strings for various error cases. This gives us much nicer and understandable error messages. SYS_getrandom() EAGAIN is now an error. Cryptography refuses to initialize its osrandom engine when the Kernel's CPRNG hasn't been seeded yet. Signed-off-by: Christian Heimes <christian@python.org>
* friendly error if you put a date too far in the future on windows (#3279)Paul Kehrer2016-12-051-2/+15
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