This package provides a library to estimate password strength. It is implemented by python bindings for zxcvbn-rs and aims to be faster than python-zxcvbn thanks to its Rust core.

Pyu2f is a Python-based U2F host library. It provides functionality for interacting with a U2F device over USB.

This package provides a Python wrapper of the C library implementation of the CRC32C 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

PyCryptodomex is the stand-alone version of PyCryptodome that no longer provides drop-in compatibility with PyCrypto.

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.

libnacl is used to gain direct access to the functions exposed by NaCl library via libsodium. It has been constructed to maintain extensive documentation on how to use NaCl as well as being completely portable.

Passlib is a password hashing library for Python 2 & 3, which provides cross-platform implementations of over 30 password hashing algorithms, as well as a framework for managing existing password hashes. It's designed to be useful for a wide range of tasks, from verifying a hash found in /etc/shadow, to providing full-strength password hashing for multi-user application.

M2Crypto is a complete Python wrapper for OpenSSL featuring RSA, DSA, DH, EC, HMACs, message digests, symmetric ciphers (including AES); TLS functionality to implement clients and servers; HTTPS extensions to Python's httplib, urllib, and xmlrpclib; unforgeable HMAC'ing AuthCookies for web session management; FTP/TLS client and server; S/MIME; M2Crypto can also be used to provide TLS for Twisted. Smartcards supported through the Engine interface.

This package provides utilities for generating and using Bitcoin Hierarchical Deterministic wallets (BIP0032).

This package provides test vectors for PyCryptodome.

OMEMO cryptography library that was forked from python-axolotl.

Python module for generating objects that compute the Cyclic Redundancy Check.

This package provides a complete PKCS#11 wrapper for Python.

PyOpenSSL is a high-level wrapper around a subset of the OpenSSL library.

This package provides a Ethereum hashing function - keccak256 (sha3).

This Python package is a high-level wrapper for Kerberos (GSSAPI) operations. The goal is to avoid having to build a module that wraps the entire Kerberos.framework, and instead offer a limited set of functions that do what is needed for client/server Kerberos authentication based on <http://www.ietf.org/rfc/rfc4559.txt>.

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.

Base58 and Base58Check implementation compatible with what is used by the Bitcoin network.

This package provides a Python implementation of the JOSE protocol (Javascript Object Signing and Encryption).

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).

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.

Bcrypt is a Python module which provides a password hashing method based on the Blowfish password hashing algorithm, as described in "A Future-Adaptable Password Scheme" by Niels Provos and David Mazieres.

PyOTP is a Python library for generating and verifying one-time passwords. It can be used to implement two-factor (2FA) or multi-factor (MFA) authentication methods in web applications and in other systems that require users to log in.

asn1crypto is an ASN.1 parser and serializer with definitions for private keys, public keys, certificates, CRL, OCSP, CMS, PKCS#3, PKCS#7, PKCS#8, PKCS#12, PKCS#5, X.509 and TSP.