Crate kc 

Reading and writing macOS .keychain database files directly.

This is the CDSA-era keychain format — the one security create-keychain still writes on macOS 26 — parsed and produced without the Security framework, so it works on any host and needs no entitlements.

• format is the kych container: tables, records, attribute values.
• schema is the self-describing schema every keychain carries.
• crypto is the encryption the container specification omits.
• db ties them together: open, unlock, query, decrypt.
• write creates keychains and adds items.

See README.md for the format notes and the security caveats.

Re-exports

pub use db::Info;

pub use db::Item;

pub use db::KeychainFile;

pub use db::Query;

pub use error::Error;

pub use error::Result;

pub use format::Keychain;

pub use format::Record;

pub use format::Value;

pub use schema::AttributeFormat;

pub use schema::RecordType;

pub use schema::Schema;

pub use write::CreateOptions;

pub use write::NewItem;

pub use write::create;

Modules

acl

Public ACL blobs, parsed and produced as structures.

apple_schema

Apple’s keychain schema, as data.

crypto

Keychain cryptography: master key derivation, the database blob, wrapped item keys, and item secrets.

cssm

CSSM structures that appear inside keychain blobs, as types.

db

Opening, unlocking, and querying a keychain database.

der

Just enough DER to fill in a certificate record’s attributes.

error

Errors for keychain parsing, crypto, and item lookup.

format

The kych container: file header, tables, records, attribute values.

index

Table indexes: the sorted lookup structures in the trailing part of a table.

output

Rendering for the kc binary: the two shapes its output takes.

records

Typed records: the attribute sets stored for an item and for its key.

requirement

Reading an application’s designated requirement out of its code signature.

schema

Relations and attributes — the schema a keychain carries about itself.

secret

Secret bytes and the randomness that produces them.

write

Creating keychains and adding items.