i[f>dZddlmZddlmZGddeZdS)z authlib.jose.draft ~~~~~~~~~~~~~~~~~~~~ Content Encryption per `Section 4`_. .. _`Section 4`: https://datatracker.ietf.org/doc/html/draft-amringer-jose-chacha-02#section-4 )ChaCha20Poly1305)JWEEncAlgorithmc$eZdZdZdZdZdZdS)C20PEncAlgorithm`c>d|_d|_||_||_dS)NC20PzChaCha20-Poly1305)name descriptionkey_sizeCEK_SIZE)selfr s ]/var/www/piapp/venv/lib/python3.11/site-packages/authlib/jose/drafts/_jwe_enc_cryptography.py__init__zC20PEncAlgorithm.__init__s# .    c||t|}||||}|dd|ddfS)a#Content Encryption with AEAD_CHACHA20_POLY1305 :param msg: text to be encrypt in bytes :param aad: additional authenticated data in bytes :param iv: initialization vector in bytes :param key: encrypted key in bytes :return: (ciphertext, tag) Ni)check_ivrencrypt)rmsgaadivkeychacha ciphertexts rrzC20PEncAlgorithm.encryptsU b!#&&^^BS11 $3$CDD!111rc~||t|}||||z|S)aHContent Decryption with AEAD_CHACHA20_POLY1305 :param ciphertext: ciphertext in bytes :param aad: additional authenticated data in bytes :param iv: initialization vector in bytes :param tag: authentication tag in bytes :param key: encrypted key in bytes :return: message )rrdecrypt)rrrrtagrrs rrzC20PEncAlgorithm.decrypt&s> b!#&&~~b*s"2C888rN)__name__ __module__ __qualname__IV_SIZErrrrrrr sHG!!! 2 2 2 9 9 9 9 9rrN)__doc__+cryptography.hazmat.primitives.ciphers.aeadrauthlib.jose.rfc7516rrr"rrr&sjIHHHHH000000%9%9%9%9%9%9%9%9%9%9r