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python-python-snappy provides bindings to the Snappy library and can be used to compress and decompress files and streams. It can also be used directly from the command line.
pylsqpack is a wrapper around the ls-qpack library. It provides Python Decoder and Encoder objects to read or write HTTP/3 headers compressed with QPACK.
Python-RSA is a pure-Python RSA implementation. It supports encryption and decryption, signing and verifying signatures, and key generation according to PKCS#1 version 1.5. It can be used as a Python library as well as on the command line.
This package contains test vectors for the cryptography package.
This is an easy-to-use implementation of ECDSA cryptography (Elliptic Curve Digital Signature Algorithm), implemented purely in Python. With this library, you can quickly create key pairs (signing key and verifying key), sign messages, and verify the signatures. The keys and signatures are very short, making them easy to handle and incorporate into other protocols.
This package provides a Python wrapper of the C library implementation of the CRC32C hashing algorithm.
This is a python port of libaxolotl-android. This is a ratcheting forward secrecy protocol that works in synchronous and asynchronous messaging environments.
This is a Python implementation of the zxcvbn library created at Dropbox. The original library, written for JavaScript, can be found here. This port includes features such as:
Accepts user data to be added to the dictionaries that are tested against (name, birthdate, etc.)
Gives a score to the password, from 0 (terrible) to 4 (great).
Provides feedback on the password and ways to improve it.
Returns time estimates on how long it would take to guess the password in different situations.
cryptography is a package which provides cryptographic recipes and primitives to Python developers. It aims to be the “cryptographic standard library” for Python. The package includes both high level recipes, and low level interfaces to common cryptographic algorithms such as symmetric ciphers, message digests and key derivation functions.
This package provides Python bindings for the Rust crate of blake3, a cryptographic hash function.
Keyrings in this package may have security risks or other implications. These backends were extracted from the main keyring project to make them available for those who wish to employ them, but are discouraged for general production use. Include this module and use its backends at your own risk.
Certifi is a Python library that contains a CA certificate bundle, which is used by the Requests library to verify HTTPS requests.
Pure-Python implementation of the blurhash algorithm.
Python module for generating objects that compute the Cyclic Redundancy Check.
This library handles the low-level details of NTLM authentication for use in authenticating with a service that uses NTLM. It will create and parse the 3 different message types in the order required and produce a base64 encoded value that can be attached to the HTTP header.
The goal of this library is to offer full NTLM support including signing and sealing of messages as well as supporting MIC for message integrity and the ability to customise and set limits on the messages sent. Please see Features and Backlog for a list of what is and is not currently supported.
The Python keyring lib provides a easy way to access the system keyring service from python. It can be used in any application that needs safe password storage.
Currently, PGPy can load keys and signatures of all kinds in both ASCII armored and binary formats.
It can create and verify RSA, DSA, and ECDSA signatures, at the moment. It can also encrypt and decrypt messages using RSA and ECDH.
This package contains a pure-Python implementation of the AES block cipher algorithm and the common modes of operation (CBC, CFB, CTR, ECB and OFB).
Base58 and Base58Check implementation compatible with what is used by the Bitcoin network.
This package provides a Python implementation of the HMAC Key Derivation function (HKDF) defined in RFC 5869.
argon2-cffi-bindings provides low-level CFFI bindings to the official implementation of the Argon2 password hashing algorithm.
PyCryptodome is a self-contained Python package of low-level cryptographic primitives. It's not a wrapper to a separate C library like OpenSSL. To the largest possible extent, algorithms are implemented in pure Python. Only the pieces that are extremely critical to performance (e.g., block ciphers) are implemented as C extensions.
You are expected to have a solid understanding of cryptography and security engineering to successfully use these primitives. You must also be able to recognize that some are obsolete (e.g., TDES) or even insecure (RC4).
It provides many enhancements over the last release of PyCrypto (2.6.1):
Authenticated encryption modes (GCM, CCM, EAX, SIV, OCB)
Accelerated AES on Intel platforms via AES-NI
First-class support for PyPy
Elliptic curves cryptography (NIST P-256 curve only)
Better and more compact API (nonce and iv attributes for ciphers, automatic generation of random nonces and IVs, simplified CTR cipher mode, and more)
SHA-3 (including SHAKE XOFs) and BLAKE2 hash algorithms
Salsa20 and ChaCha20 stream ciphers
scrypt and HKDF
Deterministic (EC)DSA
Password-protected PKCS#8 key containers
Shamir’s Secret Sharing scheme
Random numbers get sourced directly from the OS (and not from a CSPRNG in userspace)
Cleaner RSA and DSA key generation (largely based on FIPS 186-4)
Major clean-ups and simplification of the code base
This package provides drop-in compatibility with PyCrypto. It is one of two PyCryptodome variants, the other being python-pycryptodomex.
This package provides a Elliptic Curve Library in pure Python.
PyNaCl is a Python binding to libsodium, which is a fork of the Networking and Cryptography library. These libraries have a stated goal of improving usability, security and speed.