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* llcrypto: add an rng compatibility shim for dalek-cryptoNick Mathewson2025-03-181-2/+4
| | | | | | | | | dalek-cryptography is still on rand 0.8, so we need a compatibility shim for the Rng. Fortunately, since we merged interface-abstraction-of-the-daleks (!2868), we no longer need to propagate this compatibility layer throughout our codebase.
* Wrap ed25519-dalek types.Nick Mathewson2025-03-182-31/+155
| | | | | | | | | | | With this change, we'll no longer need to expose the types from dalek-cryptography as part of our API, and we'll have more freedom to switch ed25519 implementations, or to upgrade to a newer `rand` ahead of their schedule. Unlike with x25519-dalek, I had to tweak the API a bit: There's no way to get a &PublicKey out of a Keypair now, and implementing the old ed25519-dalek traits seemed unnecessary.
* Rename "memquota" feature to "memquota-memcost" when it's just HasMemoryCost ↵Ian Jackson2024-10-162-3/+15
| | | | (fmt)
* Rename "memquota" feature to "memquota-memcost" when it's just HasMemoryCostIan Jackson2024-10-162-7/+7
| | | | It's not documented anywhere ATM. I will do that in a followup MR.
* Some HasMemoryCost impls in tor-llcryptoIan Jackson2024-10-022-0/+11
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* tor-llcrypto: replace simple_asn1 dependency with der_parserMorgan2024-09-281-18/+16
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* tor_hsservice: add `impl From<&FooPublicKeySpecifier> for ↵Adam Joseph F0B74D717CDE8412A3E0D4D5F29AC8080DA8E1E02024-09-091-0/+6
| | | | | | | | | | | | | FooKeypairSpecifier` instances This adds the following trivial `From` instances: - tor_hsservice: impl From<&HsIdPublicKeySpecifier> for HsIdKeypairSpecifier - tor_hsservice: impl From<&BlindIdPublicKeySpecifier> for BlindIdKeypairSpecifier - tor_hscrypto::pk: impl From<HsBlindIdKeypair> for HsBlindIdKey - tor_llcrypto::pk::ed25519: impl From<ExpandedKeypair> for PublicKey - tor_keymgr::mgr: impl From<TestKey> for TestPublicKey - tor::hscrypto::pk: impl From<HsIdKeypair> for HsIdKey
* keymanip: Make blind_pubkey exist unconditionallyNick Mathewson2024-08-211-4/+4
| | | | | | | | | Now it exists unconditionally so that we can have our assertion for public key consistency happen unconditionally. (Blinding secret keys is not remotely in the critical path, so I'm not concerned about the critical path.) From a suggestion from Gabi on !2341.
* keymanip: Use doc(cfg(...)) in place of "Availability" sectionsNick Mathewson2024-08-211-8/+2
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* llcrypto: Make `blind_keypair` build without hsv3-client.Nick Mathewson2024-08-211-2/+2
| | | | | | | | | | The `blind_keypair` function should only call `blind_pubkey` when it is present. Also, fix the documentation: blind_keypair is a hsv3-service function, not a hsv3-client function. Closes #1504.
* Run maint/add_warning.Nick Mathewson2024-03-131-0/+1
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* clippy: consequential rustfmtIan Jackson2024-01-021-4/+1
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* clippy: Use infallible callsIan Jackson2024-01-021-2/+1
| | | | Resolves clippy complaints about needless fallible conversions.
* Fix a rustdoc error.Nick Mathewson2023-11-291-1/+1
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* Resolve an unfinished sentenceNick Mathewson2023-11-291-1/+2
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* grammar fix in commentgabi-2502023-11-291-1/+1
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* llcrypto: remove a comment suggesting a grand renaming.Nick Mathewson2023-11-291-3/+3
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* llcrypto: Hide the members of ExpandedKeypair.Nick Mathewson2023-11-291-5/+15
| | | | | With this change, we no longer expose the ExpandedSecretKey unescorted, which makes it harder to misuse the API.
* llcrypto: Undo internal ed25519-dalek renamings in keymanip.rsNick Mathewson2023-11-291-8/+7
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* llcrypto: Remove redundant re-exports in keymanip.Nick Mathewson2023-11-291-10/+3
| | | | (These types were all already re-exported from pk::ed25519.)
* llcrypto: Remove ExpandedSecretKey export.Nick Mathewson2023-11-292-6/+3
| | | | | | | This type was part of `hazmat`, and was no longer necessary anywhere in our codebase. (It had one remaining user, which was easy enough to remove.) By removing it, we remove the opportunity for using an unescorted ed25519 private key.
* Deprecate convert_ed25519_to_curve25519_private as unusedNick Mathewson2023-11-291-0/+5
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* Remove RngCompatExt.Nick Mathewson2023-11-291-4/+2
| | | | | | | | | | This code was needed with the old version of dalek-cryptography, which wasn't compatible with up-to-date versions of the `rand` crate(s). But now that we've upgraded, we can drop this. (We could have left it around and deprecated it, but we are already making a breaking change to tor-llcrypto by upgrading dalek-cryptography.)
* Convert to the latest versions of dalek-cryptographyNick Mathewson2023-11-292-134/+157
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The main changes that we have to adjust for are as follows: * In x25519-dalek: * `StaticSecret` is now behind a feature. * `StaticSecret::new` is deprecated in favor of `StaticSecret::random_from_rng`. * StaticSecret no longer does its own clamping. * In ed25519-dalek: * `SecretKey` has (in effect) been renamed to `SigningKey`. The name `SecretKey` is now an alias for `[u8; 32]`. * `SigningKey` is effectively a keypair, since it contains a public key as well. * `PublicKey` has been renamed to `VerifyingKey`. * The functions to extract a signing key and verifying key have been renamed as you might expect. * `ExpandedSecretKey` has been moved to `hasmat` and no longer implements `sign`. * `ExpanededSecretKey` now has as its elements a scalar and a hash prefix. * Various functions that took `&[u8]` now take `&[u8; N]`. * We no longer need a wrapper for older versions of rand. There is a single test in tor-keymgr that does not pass. I've marked it as ignore for now, in hopes that @gabi-250 can help me figure it out. This closes #808. There are several changes I want to make before we merge, however. They are marked with TODO DALEK.
* Run maint/add_warning to add lint block everywhereIan Jackson2023-08-231-0/+1
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* Resolve warnings about ambiguous/redundant doc linksNick Mathewson2023-08-221-2/+2
| | | | | Nightly rustdoc now warns if you have a link that isn't necessary, and if you have a link that might refer to two different things.
* tor-llcrypto: Add a missing instance of the standard lint blockIan Jackson2023-07-101-0/+10
| | | | This fixes a needless_vec lint on nightly.
* llcrypto: Add reference to paper about keypair reuse.Gabriela Moldovan2023-06-271-0/+2
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* llcrypto: Remove `# Availability` doc sections.Gabriela Moldovan2023-06-271-8/+0
| | | | | | | | | | This removes the `# Availability` section from the `convert_ed25519_to_curve25519_private` and `convert_curve25519_to_ed25519_private` docs. We don't generally have this sort of section anywhere else in the codebase (we use unstable cargo-docs features to make sure items are annotated correctly).
* llcrypto: Add cvt-x25519 feature flag for exporting key conversion functions.Gabriela Moldovan2023-06-271-4/+4
| | | | | | The `convert_curve25519_to_ed25519_private` and `convert_ed25519_to_curve25519_private` functions are now exported by `tor-llcrypto` if the `cvt-25519` feature is enabled.
* llcrypto: Add `Panics`, `Availability` docs for ↵Gabriela Moldovan2023-06-271-0/+12
| | | | convert_ed25519_to_curve25519_private.
* llcrypto: Fix clippy lint.Gabriela Moldovan2023-06-271-1/+1
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* llcrypto: Explain what we need the ed25519->x25519 conversion for.Gabriela Moldovan2023-06-271-0/+4
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* llcrypto: Document how convert_ed25519_to_curve25519_private computes the key.Gabriela Moldovan2023-06-271-0/+5
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* llcrypto: Add note about bumping x25519-dalek and clamping.Gabriela Moldovan2023-06-271-0/+45
| | | | | | | | | | This adds a TODO explaining how convert_ed25519_to_curve25519_private will need to be audited when we upgrade to the latest x25519-dalek. This also adds a `debug_assertions` and a test that ensures `StaticSecret::from` is clamping the input (when we bump x25519-dalek, the assertions will fail, as the latest version doesn't do clamping in StaticSecret::from).
* llcrypto: Document ed25519->curve25519->ed25519 conversion behaviour.Gabriela Moldovan2023-06-271-0/+5
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* llcrypto: Implement ed25519_to_curve25519_private conversion.Gabriela Moldovan2023-06-271-0/+57
| | | | | | | | | | | | | In `ArtiNativeKeyStore`, private keys are stored in OpenSSH format. However, `ssh-key` (the crate we use for parsing OpenSSH keys) doesn't support x25519 keys. As a workaround, this type of key will stored as ed25519 and converted to x25519 upon retrieval. This commit implements the `convert_ed25519_to_curve25519_private` conversion function (needed by `ArtiNativeKeyStore` to support x25519 keys). Part of #900
* Back down x25519-dalek to 2.0.0-pre.1 from 2.0.0-rc.2pinkforest2023-06-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ========================= Notes from nickm: (This differs from pinkforest's original MR: It removes the Cargo.lock changes and the version bump on tor-llcrypto.) Minimal Cargo.lock changes from downgrade. (These are exactly those changes generated by running "build" and "test".) There are several reasons to do this: * It's best to bump all of our dalek dependencies at once to rc.3 or later, rather than the piecemeal approach we've been stuck with so far. * We don't want to do this bump right now, since there are some tricky questions about clamping we need to figure out (see #808), and we need to make sure we get them right, and we're in a distracted this week. * We _do_ need to move away from 2.0.0-rc.2 right now, since it was causing a failure in `cargo install arti`, and then it got yanked. Thanks to pinkforest for helping us out here and explaining all of this! Fixes #926. Commit-edited-by: Nick Mathewson <[email protected]>
* tor-llcrypto: remove use of arrayrefNick Mathewson2023-06-013-18/+15
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* llcrypto: Don't take or return "unescorted" ed25519 keys.Nick Mathewson2023-05-181-19/+37
| | | | | | | | | | | | Per #798, we want to make sure that we never pass around an `ed25519::SecretKey`; only an `ed25519::Keypair` (or `ExpandedKeypair`). This is because, when you're computing an ed25519 signature, you have to use the public key as one of your inputs, and if you ever use a mismatched public key you are vulnerable to a nonce reuse attack. (For more info see https://moderncrypto.org/mail-archive/curves/2020/001012.html )
* llcrypto: Add an `ed25519::ExpandedKeypair` type.Nick Mathewson2023-05-181-0/+25
| | | | | | | | This is like an `ed25519::Keypair`, except that instead of a `SecretKey` it contains an `ExpandedSecretKey`. We'll be using this to implement #798, where we impose a rule that there must be no "unescorted" ed25519 secret keys.
* Use non-deprecated *Secret::random_from_rng.Nick Mathewson2023-05-131-1/+1
| | | | The `new` function is deprecated in x25519-dalek 2.0.0-rc.2
* update rsa to 0.9.xtrinity-1686a2023-05-081-5/+4
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* tor-llcrypto: key blinding: Use consistent terminologyIan Jackson2023-03-281-19/+22
| | | | | | | | | | | | | | | | | | | | Unhelpfully, the spec uses the variable name `h` and the phrase "blinding factor" for both the unclamped and clamped value. The clamped value is internal to the algorithm. In our code: * Don't ever use the word "parameter" or variable name `param`. This doesn't appear in the spec anywhere. * Use `h` for the unclamped blinding factor, and `blinding_factor` for the clamped blinding factor. * Rename `blinding_factor` function to `clamp_blinding_factor`, since in the spec's terminology it takes an (unclamped) "blinding factor" and returns a (clamped) "blinding factor". * State explicitly what thing in the spec the `h` parameters are.
* Use the type system to enforce use of blinded keys.Gabriela Moldovan2023-03-271-0/+12
| | | | | | | | | | | | | | | Hidden services use blinded singing keys derived from the identity key to sign descriptor signing keys. Before this patch, the hidden descriptor builder represented its blinded signing keys (`blinded_id`) as plain `ed25519::Keypair`s. This was not ideal, as there was nothing preventing the caller from accidentally initializing `blinded_id` with an unblinded keypair. This introduces a new `HsBlindKeypair` type to represent blinded keypairs. Signed-off-by: Gabriela Moldovan <[email protected]>
* Expose a little new functionality from tor-llcrypto.Nick Mathewson2023-02-281-0/+9
| | | | | Expose ED25519 signature length; make ValidatableEd25519Signature implement Debug and Clone.
* llcrypto: Implement `Into<[u8;32]>` for Ed25519IdentityNick Mathewson2023-02-071-0/+6
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* tor-llcrypto: Tolerate some warnings (fmt)Ian Jackson2023-01-201-1/+4
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* tor-llcrypto: Tolerate some warningsIan Jackson2023-01-201-0/+4
| | | | | | Without this, cargo +stable clippy -p tor-netdoc --all-features produces warnings.
* Upgrade to latest rsa crate.Nick Mathewson2023-01-201-1/+1
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