- By setting the PYCRYPTODOME_DISABLE_GMP environment variable, the GMP library will not be used even if detected.
- Add support for Curve25519 / X25519.
- Add support for Curve448 / X448.
- Add attribute
curveto EccPoint and EccXPoint classes, with the canonical name of the curve. - GH#781: the label for the SP800_108_Counter KDF may now contain zero bytes. Thanks to Julien Rische.
- GH#814: RSA keys for PSS can be imported.
- GH#810: fixed negation of Ed25519 points.
- GH#819: accept an RFC5916 ECPrivateKey even if it doesn't contain any of the optional elements (parameters [0] and publicKey[1]).
- Remove support for Python 3.5.
- Added support for TurboSHAKE128 and TurboSHAKE256.
- Added method
Crypto.Hash.new()to generate a hash object given a hash name. - Added support for AES-GCM encryption of PBES2 and PKCS#8 containers.
- Added support for SHA-2 and SHA-3 algorithms in PBKDF2 when creating PBES2 and PKCS#8 containers.
- Export of RSA keys accepts the
prot_paramsdictionary as parameter to control the number of iterations for PBKDF2 and scrypt. - C unit tests also run on non-x86 architectures.
- GH#787: Fixed autodetect logic for GCC 14 in combination with LTO.
- Fixed a side-channel leakage with OAEP decryption that could be exploited to carry out a Manger attack (CVE-2023-52323). Thanks to Hubert Kario.
- The
update()methods of TupleHash128 and TupleHash256 objects can now hash multiple items (byte strings) at once. Thanks to Sylvain Pelissier. - Added support for ECDH, with
Crypto.Protocol.DH.
- GH#754: due to a bug in
cffi, do not use it on Windows with Python 3.12+.
- Added support for DER BOOLEAN encodings.
- The library now compiles on Windows ARM64. Thanks to Niyas Sait.
- GH#722:
nonceattribute was not correctly set for XChaCha20_Poly1305 ciphers. Thanks to Liam Haber. - GH#728: Workaround for a possible x86 emulator bug in Windows for ARM64.
- GH#739: OID encoding for arc 2 didn't accept children larger than 39. Thanks to James.
- Correctly check that the scalar matches the point when importing an ECC private key.
- Added support for the Counter Mode KDF defined in SP 800-108 Rev 1.
- Reduce the minimum tag length for the EAX cipher to 2 bytes.
- An RSA object has 4 new properties for the CRT coefficients:
dp,dq,invqandinvq(invpis the same value as the existingu).
- GH#526: improved typing for
RSA.construct. - GH#534: reduced memory consumption when using a large number of cipher objects.
- GH#598: fixed missing error handling for
Util.number.inverse. - GH#629: improved typing for
AES.newand the various mode-specific types it returns. Thanks to Greg Werbin. - GH#653: added workaround for an alleged GCC compiler bug that affected Ed25519 code compiled for AVX2.
- GH#658: attribute
curveof an ECC key was not always the preferred curve name, as it used to be in v3.15.0 (independently of the curve name specified when generating the key). - GH#637: fixed typing for legacy modules
PKCS1_v1_5andPKCS1_PSS, as theirverify()returned a boolean. - GH#664: with OCB mode, nonces of maximum length (15 bytes) were actually used as 14 bytes nonces. After this fix, data that was encrypted in past using the (default) nonce length of 15 bytes can still be decrypted by reducing the nonce to its first 14 bytes.
- GH#705: improved typing for
nonce,iv, andIVparameters of cipher objects.
- Build PyPy wheels only for versions 3.8 and 3.9, and not for 3.7 anymore.
- Build wheels for musl Linux. Thanks to Ben Raz.
- GH#639: ARC4 now also works with 'keys' as short as 8 bits.
- GH#669: fix segfaults when running in a manylinux2010 i686 image.
- Add support for curves Ed25519 and Ed448, including export and import of keys.
- Add support for EdDSA signatures.
- Add support for Asymmetric Key Packages (RFC5958) to import private keys.
- GH#620: for
Crypto.Util.number.getPrime, do not sequentially scan numbers searching for a prime.
- GH#595: Fixed memory leak for GMP integers. Thanks to Witalij Siebert and Pablo Quílez.
- Add support for curve NIST P-192.
- Add support for curve NIST P-224.
- GH#590: Fixed typing info for
Crypto.PublicKey.ECC.
- Relaxed ECDSA requirements for FIPS 186 signatures and accept any SHA-2 or SHA-3 hash.
sign()andverify()will be performed even if the hash is stronger than the ECC key.
- ECC keys in the SEC1 format can be exported and imported.
- Add support for KMAC128, KMAC256, TupleHash128, and TupleHash256 (NIST SP-800 185).
- Add support for KangarooTwelve.
- GH#563: An asymmetric key could not be imported as a
memoryview. - GH#566: cSHAKE128/256 generated a wrong output for customization strings longer than 255 bytes.
- GH#582: CBC decryption generated the wrong plaintext when the input and the output were the same buffer. Thanks to Michael K. Ashburn.
- GH#512: Especially for very small bit sizes,
Crypto.Util.number.getPrime()was occasionally generating primes larger than given the bit size. Thanks to Koki Takahashi. - GH#552: Correct typing annotations for
PKCS115_Cipher.decrypt(). - GH#555:
decrypt()method of a PKCS#1v1.5 cipher returned abytearrayinstead ofbytes. - GH#557: External DSA domain parameters were accepted even when the modulus (
p) was not prime. This affectedCrypto.PublicKey.DSA.generate()andCrypto.PublicKey.DSA.construct(). Thanks to Koki Takahashi.
- Added cSHAKE128 and cSHAKE256 (of SHA-3 family). Thanks to Michael Schaffner.
- GH#558: The flag RTLD_DEEPBIND passed to
dlopen()is not well supported by address sanitizers. It is now possible to set the environment variablePYCRYPTDOME_DISABLE_DEEPBINDto drop that flag and allow security testing.
- Output of
Crypto.Util.number.long_to_bytes()was not always a multiple ofblocksize.
- GH#376: Fixed symbol conflict between different versions of
libgmp. - GH#481: Improved robustness of PKCS#1v1.5 decryption against timing attacks.
- GH#506 and GH#509: Fixed segmentation faults on Apple M1 and other Aarch64 SoCs,
when the GMP library was accessed via
ctypes. Do not use GMP's own sscanf and snprintf routines: instead, use simpler conversion routines. - GH#510: Workaround for
cfficallingctypes.util.find_library(), which invokesgccandldon Linux, considerably slowing down all imports. On certain configurations, that may also leave temporary files behind. - GH#517: Fix RSAES-OAEP, as it didn't always fail when zero padding was incorrect.
- Added support for SHA-3 hash functions to HMAC.
- The Windows wheels of Python 2.7 now require the VS2015 runtime to be installed in the system, because Microsoft stopped distributing the VS2008 compiler in April 2021. VS2008 was used to compile the Python 2.7 extensions.
- Python 3 wheels use
abi3ABI tag. - Remove Appveyor CI.
- Fixed a potential memory leak when initializing block ciphers.
- GH#466:
Crypto.Math.miller_rabin_test()was still using the system random source and not the one provided as parameter. - GH#469: RSA objects have the method
public_key()like ECC objects. The old methodpublickey()is still available for backward compatibility. - GH#476:
Crypto.Util.Padding.unpad()was raising an incorrect exception in case of zero-length inputs. Thanks to Captainowie. - GH#491: better exception message when
Counter.new()is called with an integerinitial_valuethan doesn't fit intonbitsbits. - GH#496: added missing
block_sizemember for ECB cipher objects. Thanks to willem. - GH#500:
noncemember of an XChaCha20 cipher object was not matching the original nonce. Thanks to Charles Machalow.
- The bulk of the test vectors have been moved to the separate
package
pycryptodome-test-vectors. As result, packagespycryptodomeandpycryptodomexbecome significantly smaller (from 14MB to 3MB). - Moved CI tests and build service from Travis CI to GitHub Actions.
- Drop support for Python 2.6 and 3.4.
- GH#435: Fixed
Crypto.Util.number.sizefor negative numbers.
- Build Python 3.9 wheels on Windows.
- GH#426: The Shamir's secret sharing implementation is not actually compatible with
ssss. Added an optional parameter to enable interoperability. - GH#427: Skip altogether loading of
gmp.dllon Windows. - GH#420: Fix incorrect CFB decryption when the input and the output are the same buffer.
- Speed up Shamir's secret sharing routines. Thanks to ncarve.
- GH#381: Make notarization possible again on OS X when using wheels. Thanks to Colin Atkinson.
- Fix building of wheels for OS X by explicitly setting sysroot location.
- RSA OAEP decryption was not verifying that all
PSbytes are zero. - GH#372: fixed memory leak for operations that use memoryviews when cffi is not installed.
- Fixed wrong ASN.1 OID for HMAC-SHA512 in PBE2.
- Updated Wycheproof test vectors to version 0.8r12.
- GH#341: Prevent
key_to_englishfrom creating invalid data when fed with keys of length not multiple of 8. Thanks to vstoykovbg. - GH#347: Fix blocking RSA signing/decryption when key has very small factor. Thanks to Martijn Pieters.
- GH#308: Align stack of functions using SSE2 intrinsics to avoid crashes, when compiled with gcc on 32-bit x86 platforms.
- Add Python 3.8 wheels for Mac.
- GH#308: Avoid allocating arrays of
__m128ion the stack, to cope with buggy compilers. - GH#322: Remove blanket
-O3optimization for gcc and clang, to cope with buggy compilers. - GH#337: Fix typing stubs for signatures.
- GH#338: Deal with gcc installations that don't have
x86intrin.h.
- Add Python 3.8 wheels for Linux and Windows.
- GH#328: minor speed-up when importing RSA.
- Add support for loading PEM files encrypted with AES256-CBC.
- Add support for XChaCha20 and XChaCha20-Poly1305 ciphers.
- Add support for bcrypt key derivation function (
Crypto.Protocol.KDF.bcrypt). - Add support for left multiplication of an EC point by a scalar.
- Add support for importing ECC and RSA keys in the new OpenSSH format.
- GH#312: it was not possible to invert an EC point anymore.
- GH#316: fix printing of DSA keys.
- GH#317:
DSA.generate()was not always using therandfuncinput. - GH#285: the MD2 hash had block size of 64 bytes instead of 16; as result the HMAC construction gave incorrect results.
- GH#291: fix strict aliasing problem, emerged with GCC 9.1.
- Add support for loading PEM files encrypted with AES192-CBC and AES256-GCM.
- When importing ECC keys in PEM format, ignore the redundant EC PARAMS section that was included by certain openssl commands.
repr()did not work forECC.EccKeyobjects.- Fix installation in development mode (
setup install developorpip install -e .). - Minimal length for Blowfish cipher is 32 bits, not 40 bits.
- Various updates to docs.
- Speed-up ECC performance. ECDSA is 33 times faster on the NIST P-256 curve.
- Added support for NIST P-384 and P-521 curves.
EccKeyhas new methodssize_in_bits()andsize_in_bytes().- Support HMAC-SHA224, HMAC-SHA256, HMAC-SHA384, and HMAC-SHA512 in PBE2/PBKDF2.
- DER objects were not rejected if their length field had a leading zero.
- Allow legacy RC2 ciphers to have 40-bit keys.
- ASN.1 Object IDs did not allow the value 0 in the path.
point_at_infinity()becomes an instance method forCrypto.PublicKey.ECC.EccKey, from a static one.
- GH#258: False positive on PSS signatures when externally provided salt is too long.
- Include type stub files for
Crypto.IOandCrypto.Util.
- GH#242: Fixed compilation problem on ARM platforms.
- Added type stubs to enable static type checking with mypy. Thanks to Michael Nix.
- New
update_after_digestflag for CMAC.
- GH#232: Fixed problem with gcc 4.x when compiling
ghash_clmul.c. - GH#238: Incorrect digest value produced by CMAC after cloning the object.
- Method
update()of an EAX cipher object was returning the underlying CMAC object, instead of the EAX object itself. - Method
update()of a CMAC object was not throwing an exception after the digest was computed (withdigest()orverify()).
- Added support for Poly1305 MAC (with AES and ChaCha20 ciphers for key derivation).
- Added support for ChaCha20-Poly1305 AEAD cipher.
- New parameter
outputforCrypto.Util.strxor.strxor,Crypto.Util.strxor.strxor_c,encryptanddecryptmethods in symmetric ciphers (Crypto.Cipherpackage).outputis a pre-allocated buffer (abytearrayor a writeablememoryview) where the result must be stored. This requires less memory for very large payloads; it is also more efficient when encrypting (or decrypting) several small payloads.
- GH#266: AES-GCM hangs when processing more than 4GB at a time on x86 with PCLMULQDQ instruction.
- Drop support for Python 3.3.
- Remove
Crypto.Util.py3compat.unhexlifyandCrypto.Util.py3compat.hexlify. - With the old Python 2.6, use only
ctypes(and notcffi) to interface to native code.
- GH#198: Fix vulnerability on AESNI ECB with payloads smaller than 16 bytes (CVE-2018-15560).
- GH#187: Fixed incorrect AES encryption/decryption with AES acceleration on x86 due to gcc's optimization and strict aliasing rules.
- GH#188: More prime number candidates than necessary where discarded as composite due to the limited way D values were searched in the Lucas test.
- Fixed ResouceWarnings and DeprecationWarnings.
- Workaround for Python 3.7.0 bug on Windows (https://bugs.python.org/issue34108).
- Build Python 3.7 wheels on Linux, Windows and Mac.
- GH#178: Rename
_cpuidmodule to make upgrades more robust. - More meaningful exceptions in case of mismatch in IV length (CBC/OFB/CFB modes).
- Fix compilation issues on Solaris 10/11.
- GH#175: Fixed incorrect results for CTR encryption/decryption with more than 8 blocks.
- ChaCha20 accepts 96 bit nonces (in addition to 64 bit nonces) as defined in RFC7539.
- Accelerate AES-GCM on x86 using PCLMULQDQ instruction.
- Accelerate AES-ECB and AES-CTR on x86 by pipelining AESNI instructions.
- As result of the two improvements above, on x86 (Broadwell):
- AES-ECB and AES-CTR are 3x faster
- AES-GCM is 9x faster
- On Windows, MPIR library was stilled pulled in if renamed to
gmp.dll.
- In
Crypto.Util.number, functionsfloor_divandexact_divhave been removed. Also,ceil_divis limited to non-negative terms only.
- Added Google Wycheproof tests (https://github.com/google/wycheproof) for RSA, DSA, ECDSA, GCM, SIV, EAX, CMAC.
- New parameter
mac_len(length of MAC tag) for CMAC.
- In certain circumstances (at counter wrapping, which happens on average after 32 GB) AES GCM produced wrong ciphertexts.
- Method
encrypt()of AES SIV cipher could be still called, whereas onlyencrypt_and_digest()is allowed.
- Introduced
export_keyand deprecatedexportKeyfor DSA and RSA key objects. - Ciphers and hash functions accept
memoryviewobjects in input. - Added support for SHA-512/224 and SHA-512/256.
- Reintroduced
Crypto.__version__variable as in PyCrypto. - Fixed compilation problem with MinGW.
- GH#142. Fix mismatch with declaration and definition of addmul128.
- Import and export of ECC curves in compressed form.
- The initial counter for a cipher in CTR mode can be a byte string (in addition to an integer).
- Faster PBKDF2 for HMAC-based PRFs (at least 20x for short passwords, more for longer passwords). Thanks to Christian Heimes for pointing out the implementation was under-optimized.
- The salt for PBKDF2 can be either a string or bytes (GH#67).
- Ciphers and hash functions accept data as bytearray, not just binary strings.
- The old SHA-1 and MD5 hash functions are available even when Python's own hashlib does not include them.
- Without libgmp, modular exponentiation (since v3.4.8) crashed on 32-bit big-endian systems.
- Removed support for Python < 2.6.
- GH#129. pycryptodomex could only be installed via wheels.
- GH#121. the record list was still not correct due to PEP3147 and __pycache__ directories. Thanks again to John O'Brien.
- When creating ElGamal keys, the generator wasn't a square residue: ElGamal encryption done with those keys cannot be secure under the DDH assumption. Thanks to Weikeng Chen.
- More meaningful error messages while importing an ECC key.
- GH#123 and #125. The SSE2 command line switch was not always passed on 32-bit x86 platforms.
- GH#121. The record list (--record) was not always correctly filled for the pycryptodomex package. Thanks to John W. O'Brien.
- Added a native extension in pure C for modular exponentiation, optimized for SSE2 on x86. In the process, we drop support for the arbitrary arithmetic library MPIR on Windows, which is painful to compile and deploy. The custom modular exponentiation is 130% (160%) slower on an Intel CPU in 32-bit (64-bit) mode, compared to MPIR. Still, that is much faster that CPython's own pow() function which is 900% (855%) slower than MPIR. Support for the GMP library on Unix remains.
- Added support for manylinux wheels.
- Support for Python 3.7.
- The DSA parameter 'p' prime was created with 255 bits cleared (but still with the correct strength).
- GH#106. Not all docs were included in the tar ball. Thanks to Christopher Hoskin.
- GH#109. ECDSA verification failed for DER encoded signatures. Thanks to Alastair Houghton.
- Human-friendly messages for padding errors with ECB and CBC.
- API documentation is made with sphinx instead of epydoc.
- Start using
importlibinstead ofimpwhere available.
- GH#82. Fixed PEM header for RSA/DSA public keys.
- GH#65. Keccak, SHA3, SHAKE and the seek functionality for ChaCha20 were not working on big endian machines. Fixed. Thanks to Mike Gilbert.
- A few fixes in the documentation.
- The library can also be compiled using MinGW.
- Removed use of
alloca(). - [Security] Removed implementation of deprecated "quick check" feature of PGP block cipher mode.
- Improved the performance of
scryptby converting some Python to C.
- Undefined warning was raised with libgmp version < 5
- Forgot inclusion of
alloca.h - Fixed a warning about type mismatch raised by recent versions of cffi
- Fix renaming of package for
installcommand.
- Added option to install the library under the
Cryptodomepackage (instead ofCrypto).
- Added
Crypto.PublicKey.ECCmodule (NIST P-256 curve only), including export/import of ECC keys. - Added support for ECDSA (FIPS 186-3 and RFC6979).
- For CBC/CFB/OFB/CTR cipher objects,
encrypt()anddecrypt()cannot be intermixed. - CBC/CFB/OFB, the cipher objects have both
IVandivattributes.new()acceptsIVas well asivas parameter. - For CFB/OPENPGP cipher object,
encrypt()anddecrypt()do not require the plaintext or ciphertext pieces to have length multiple of the CFB segment size. - Added dedicated tests for all cipher modes, including NIST test vectors
- CTR/CCM/EAX/GCM/SIV/Salsa20/ChaCha20 objects expose the
nonceattribute. - For performance reasons, CCM cipher optionally accepted a pre-declaration of the length of the associated data, but never checked if the actual data passed to the cipher really matched that length. Such check is now enforced.
- CTR cipher objects accept parameter
nonceand possiblyinitial_valuein alternative tocounter(which is deprecated). - All
iv/IVandnonceparameters are optional. If not provided, they will be randomly generated (exception:noncefor CTR mode in case of block sizes smaller than 16 bytes). - Refactored ARC2 cipher.
- Added
Crypto.Cipher.DES3.adjust_key_parity()function. - Added
RSA.import_keyas an alias to the deprecatedRSA.importKey(same for theDSAmodule). - Added
size_in_bits()andsize_in_bytes()methods toRsaKey.
- RSA key size is now returned correctly in
RsaKey.__repr__()method (kudos to hannesv). - CTR mode does not modify anymore
counterparameter passed tonew()method. - CTR raises
OverflowErrorinstead ofValueErrorwhen the counter wraps around. - PEM files with Windows newlines could not be imported.
Crypto.IO.PEMandCrypto.IO.PKCS8used to accept empty passphrases.- GH#6: NotImplementedError now raised for unsupported methods
sign,verify,encrypt,decrypt,blind,unblindandsizein objectsRsaKey,DsaKey,ElGamalKey.
- Parameter
segment_sizecannot be 0 for the CFB mode. - For OCB ciphers, a final call without parameters to
encryptmust end a sequence of calls toencryptwith data (similarly fordecrypt). - Key size for
ARC2,ARC4andBlowfishmust be at least 40 bits long (still very weak). - DES3 (Triple DES module) does not allow keys that degenerate to Single DES.
- Removed method
getRandomNumberinCrypto.Util.number. - Removed module
Crypto.pct_warnings. - Removed attribute
Crypto.PublicKey.RSA.algorithmIdentifier.
- Opt-in for
update()afterdigest()for SHA-3, keccak, BLAKE2 hashes
- Removed unused SHA-3 and keccak test vectors, therefore significantly reducing the package from 13MB to 3MB.
- Removed method
copy()from BLAKE2 hashes - Removed ability to
update()a BLAKE2 hash after the first call to(hex)digest()
- Windows wheels bundle the MPIR library
- Detection of faults occurring during secret RSA operations
- Detection of non-prime (weak) q value in DSA domain parameters
- Added original Keccak hash family (b=1600 only). In the process, simplified the C code base for SHA-3.
- Added SHAKE128 and SHAKE256 (of SHA-3 family)
- GH#3: gcc 4.4.7 unhappy about double typedef
- Removed method
copy()from all SHA-3 hashes - Removed ability to
update()a SHA-3 hash after the first call to(hex)digest()
- Windows wheels are automatically built on Appveyor
- Added hash functions BLAKE2b and BLAKE2s.
- Added stream cipher ChaCha20.
- Added OCB cipher mode.
- CMAC raises an exception whenever the message length is found to be too large and the chance of collisions not negligeable.
- New attribute
oidfor Hash objects with ASN.1 Object ID - Added
Crypto.Signature.pssandCrypto.Signature.pkcs1_15 - Added NIST test vectors (roughly 1200) for PKCS#1 v1.5 and PSS signatures.
- tomcrypt_macros.h asm error #1
- Removed keyword
verify_x509_certfrom module methodimportKey(RSA and DSA). - Reverted to original PyCrypto behavior of method
verifyinPKCS1_v1_5andPKCS1_PSS.
- Speed up execution of Public Key algorithms on PyPy, when backed by the Gnu Multiprecision (GMP) library.
- GMP headers and static libraries are not required anymore at the time PyCryptodome is built. Instead, the code will automatically use the GMP dynamic library (.so/.DLL) if found in the system at runtime.
- Reduced the amount of C code by almost 40% (4700 lines). Modularized and simplified all code (C and Python) related to block ciphers. Pycryptodome is now free of CPython extensions.
- Add support for CI in Windows via Appveyor.
- RSA and DSA key generation more closely follows FIPS 186-4 (though it is not 100% compliant).
- None
- New dependency on ctypes with Python 2.4.
- The
counterparameter of a CTR mode cipher must be generated viaCrypto.Util.Counter. It cannot be a generic callable anymore. - Removed the
Crypto.Random.Fortunapackage (due to lack of test vectors). - Removed the
Crypto.Hash.newfunction. - The
allow_wraparoundparameter ofCrypto.Util.Counteris ignored. An exception is always generated if the counter is reused. DSA.generate,RSA.generateandElGamal.generatedo not accept theprogress_funcparameter anymore.- Removed
Crypto.PublicKey.RSA.RSAImplementation. - Removed
Crypto.PublicKey.DSA.DSAImplementation. - Removed ambiguous method
size()from RSA, DSA and ElGamal keys.
- Initial support for PyPy.
- SHA-3 hash family based on the April 2014 draft of FIPS 202.
See modules
Crypto.Hash.SHA3_224/256/384/512. Initial Keccak patch by Fabrizio Tarizzo. - Salsa20 stream cipher. See module
Crypto.Cipher.Salsa20. Patch by Fabrizio Tarizzo. - Colin Percival's
scryptkey derivation function (Crypto.Protocol.KDF.scrypt). - Proper interface to FIPS 186-3 DSA. See module
Crypto.Signature.DSS. - Deterministic DSA (RFC6979). Again, see
Crypto.Signature.DSS. - HMAC-based Extract-and-Expand key derivation function
(
Crypto.Protocol.KDF.HKDF, RFC5869). - Shamir's Secret Sharing protocol, compatible with ssss (128 bits only).
See module
Crypto.Protocol.SecretSharing. - Ability to generate a DSA key given the domain parameters.
- Ability to test installation with a simple
python -m Crypto.SelfTest.
- LP#1193521:
mpz_powm_sec()(and Python) crashed when modulus was odd. - Benchmarks work again (they broke when ECB stopped working if an IV was passed. Patch by Richard Mitchell.
- LP#1178485: removed some catch-all exception handlers. Patch by Richard Mitchell.
- LP#1209399: Removal of Python wrappers caused HMAC to silently produce the wrong data with SHA-2 algorithms.
- LP#1279231: remove dead code that does nothing in SHA-2 hashes. Patch by Richard Mitchell.
- LP#1327081: AESNI code accesses memory beyond buffer end.
- Stricter checks on ciphertext and plaintext size for textbook RSA (kudos to sharego).
Removed support for Python < 2.4.
Removed the following methods from all 3 public key object types (RSA, DSA, ElGamal):
signverifyencryptdecryptblindunblind
Code that uses such methods is doomed anyway. It should be fixed ASAP to use the algorithms available in
Crypto.SignatureandCrypto.Cipher.The 3 public key object types (RSA, DSA, ElGamal) are now unpickable.
Symmetric ciphers do not have a default mode anymore (used to be ECB). An expression like
AES.new(key)will now fail. If ECB is the desired mode, one has to explicitly useAES.new(key, AES.MODE_ECB).Unsuccessful verification of a signature will now raise an exception [reverted in 3.2].
Removed the
Crypto.Random.OSRNGpackage.Removed the
Crypto.Util.winrandommodule.Removed the
Crypto.Random.randpoolmodule.Removed the
Crypto.Cipher.XORmodule.Removed the
Crypto.Protocol.AllOrNothingmodule.Removed the
Crypto.Protocol.Chaffingmodule.Removed the parameters
disabled_shortcutandoverflowfromCrypto.Util.Counter.new.
Crypto.Randomstops being a userspace CSPRNG. It is now a pure wrapper overos.urandom.- Added certain resistance against side-channel attacks for GHASH (GCM) and DSA.
- More test vectors for
HMAC-RIPEMD-160. - Update
libtomcryptheaders and code to v1.17 (kudos to Richard Mitchell). - RSA and DSA keys are checked for consistency as they are imported.
- Simplified build process by removing autoconf.
- Speed optimization to PBKDF2.
- Add support for MSVC.
- Replaced HMAC code with a BSD implementation. Clarified that starting from the fork, all contributions are released under the BSD license.