Tizian 「ティツィアーン」
3bc0bae6e3
ADR 0017's step 1, on libsodium (sodium 4.1.0+1, whose build hook compiles the libsodium 1.0.22 it ships: a C compiler and make wherever it builds): - Argon2id (64 MiB, 3 passes, kept with the account and never below that) makes a master key, which libsodium's KDF splits into SRP's secret (x) and the key-encryption key. - The account's X25519 and Ed25519 key pairs, their private halves wrapped with XChaCha20-Poly1305 under the KEK and under the recovery key, bound to their public keys. - A 24-word BIP-39 recovery phrase (the English list, MIT) and the recovery key derived from it. - Data keys sealed to the account with crypto_box_seal, bound to their IDs; content in ADR 0002's envelope, encrypted with a data key and signed with Ed25519 (detached), bound to a context the caller names. - Secrets in libsodium's guarded memory where its API takes them. - Tests: libsodium's Argon2id known answers, BIP-39's English vectors, round trips and every refusal. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
23 lines
1 KiB
Dart
23 lines
1 KiB
Dart
/// An account's keys on the device (ADR 0017): what the password unlocks
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/// (Argon2id, split into SRP's x and the key-encryption key), the account's
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/// key pairs and their wrapping, the recovery phrase and its key, data keys
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/// sealed to the account, and content sealed and signed in ADR 0002's
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/// envelope. libsodium (the `sodium` package, its sumo API for Argon2id)
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/// does every primitive; nothing here is ever sent but what is wrapped,
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/// sealed or public.
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library;
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export 'src/account_keys.dart'
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show AccountKeys, WrappedAccountKeys, unwrapAccountKeys, wrapAccountKeys;
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export 'src/data_keys.dart' show DataKey, openDataKey, sealDataKey;
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export 'src/key_refused.dart';
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export 'src/password_keys.dart'
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show PasswordKdf, PasswordKeys, derivePasswordKeys, newPasswordSalt;
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export 'src/recovery_phrase.dart'
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show
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entropyOfRecoveryPhrase,
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newRecoveryPhrase,
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recoveryEntropyBytes,
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recoveryKeyOf,
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recoveryPhraseOf;
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export 'src/sealed_content.dart' show SealedContent, openContent, sealContent;
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