5dU(dZddlmZddlmZmZmZmZmZm Z m Z m Z edZ edZ d d Z dd Zd Zd ZdS)a This module contains functions that construct metadata and generate signing keys. Function Manifest for this Module Key Creation: gen_keys gen_and_write_keys Metadata Construction: build_delegating_metadata build_root_metadata (wraps build_delegating_metadata) ) timedelta)SECURITY_METADATA_SPEC_VERSION PrivateKey PublicKeycheckformat_delegationscheckformat_natural_intcheckformat_stringcheckformat_utc_isoformatiso8601_time_plus_delta)daysimNc(|i}|ttd}|tt}t|t |t |t |t |||t|||d}|S)uy # ✅ TODO: Docstring Builds delegating metadata, e.g. root.json, key_mgr.json. See metadata specification at: anaconda.atlassian.net/wiki/spaces/AD/pages/285147281/Conda+Security+Metadata+Specification Arguments: metadata_type: The type of this metadata (e.g. root or key_mgr). This should match the intended filename (without .json) delegations (default {} ) a dictionary defining the delegations this metadata makes. Each key is the role delegated to, with the value equal to a dictionary listing the acceptable public keys and threshold (number of signatures from distinct acceptable public keys) for the delegated role. e.g. { 'root.json': {'pubkeys': ['01'*32, '02'*32, '03'*32], 'threshold': 2}, 'key_mgr.json': {'pubkeys': ['04'*32], 'threshold': 1}} If not provided, an empty dictionary (no delegations) will be used. version (default 1) the version of the metadata; root metadata must advance one version at a time (root chaining). For other types of metadata, versions are advisory. timestamp (default: current system time) UTC time associated with the production of this metadata, in ISO8601 format (e.g. '2020-10-31T14:45:19Z') expiration (default: current system time plus ROOT_MD_EXPIRY_DISTANCE) UTC time beyond which this metadata should be considered expired and not verifiable by any client seeking new metadata Nr)typeversionmetadata_spec_version timestamp expiration delegations)r rROOT_MD_EXPIRY_DISTANCEr r r rr) metadata_typerrrrmds Ilib/python3.11/site-packages/conda_content_trust/metadata_construction.pybuild_delegating_metadatar#sX +IaLL99 ,-DEE }%%%i(((j)))G$$$K(((!? "   B Icp|tt}||d||dd}td||||}|S)u# Wrapper for build_delegating_metadata(). Helpfully requires root to list itself and key_mgr in its delegations. # ✅ TODO: Docstring # ✅ TODO: Expand build_root_metadata flexibility for # directly-root-delegated roles (i.e. in addition to channeler). N)pubkeys threshold)rootkey_mgrr)rrrrr)r rr) root_version root_pubkeysroot_thresholdkey_mgr_pubkeyskey_mgr_thresholdroot_timestamproot_expirationrroot_mds rbuild_root_metadatar)ssi812IJJ)~FF.=NOOK ( " G Nrctt\}}t|dzd5}|tj|dddn #1swxYwYt|dzd5}|t j|dddn #1swxYwY||fS)a Generate an ed25519 key pair, then write the key files to disk. Given fname, write the private key to fname.pri, and the public key to fname.pub. Performs no filename validation, etc. Also returns the private key object and the public key object, in that order. z.priwbNz.pub)gen_keysopenwriterto_bytesr)fnameprivatepublicfobjs rgen_and_write_keysr4s%jjOGV efnd # #1t :&w//000111111111111111 efnd # #/t 9%f--.../////////////// F?s#(AA A7(B++B/2B/cXtj}|}||fS)a} Generate an ed25519 key pair and return it (private key, public key). Returns two objects: - a conda_content_trust.common.PrivateKey, a subclass of cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PrivateKey - a conda_content_trust.common.PublicKey, a subclass of cryptography.hazmat.primitives.asymmetric.ed25519.Ed25519PublicKey )rgenerate public_key)r1r2s rr,r,s-!##G    ! !F F?r)NrNN)NN)__doc__datetimercommonrrrrr r r r !REPODATA_VERIF_MD_EXPIRY_DISTANCErrr)r4r,rrr=s                      %.I2$6$6$6!#)---LPMMMMl0000f2r