security/py-cryptodome 4.1.0 OpenBSD

PyCryptodome is a self-contained Python package of low-level cryptographic primitives. It is an cleaned and simplified fork of PyCrypto, exposing almost the same API. Most applications run unmodified, apart from a very few compatibility breaks for those parts of the API that represented a security hazard or that were too hard to maintain.

PyCryptodome is 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.

As well as functionality supported by PyCrypto, this adds support for:

• Authenticated encryption modes (GCM, CCM, EAX, SIV, OCB)
• Elliptic curves cryptography (NIST P-256 curve only)
• SHA-3 (including SHAKE XOFs), SHA-512/t and BLAKE2 hash algorithms
• Salsa20 and ChaCha20 stream ciphers
• scrypt and HKDF
• Deterministic (EC)DSA