mirror of
https://github.com/saymrwulf/curve25519-dalek-source.git
synced 2026-09-04 20:24:10 +00:00
ed: Unvendor STROBE (#895)
* Fix bench build * Remove vendored strobe impl and use strobe-rs
This commit is contained in:
Michael Rosenberg
GitHub
parent
bad078de58
commit
fc23dd4a86
6 changed files with 42 additions and 293 deletions
67
Cargo.lock
generated
67
Cargo.lock
generated
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@ -76,12 +76,6 @@ version = "0.8.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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[[package]]
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name = "bitflags"
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version = "2.10.0"
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@ -144,12 +138,12 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
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[[package]]
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name = "chacha20"
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version = "0.10.0-rc.10"
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version = "0.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c536927023d1c432e6e23a25ef45f6756094eac2ab460db5fb17a772acdfd312"
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checksum = "6f8d983286843e49675a4b7a2d174efe136dc93a18d69130dd18198a6c167601"
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dependencies = [
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"cfg-if",
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"cpufeatures 0.2.17",
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"cpufeatures",
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"rand_core 0.10.0",
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]
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@ -217,15 +211,6 @@ version = "0.10.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a6ef517f0926dd24a1582492c791b6a4818a4d94e789a334894aa15b0d12f55c"
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[[package]]
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name = "cpufeatures"
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version = "0.2.17"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "cpufeatures"
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version = "0.3.0"
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@ -326,7 +311,7 @@ version = "5.0.0-pre.6"
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dependencies = [
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"bincode",
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"cfg-if",
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"cpufeatures 0.3.0",
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"cpufeatures",
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"criterion",
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"curve25519-dalek-derive",
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"digest",
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@ -612,7 +597,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9e24a010dd405bd7ed803e5253182815b41bf2e6a80cc3bfc066658e03a198aa"
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dependencies = [
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"cfg-if",
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"cpufeatures 0.3.0",
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"cpufeatures",
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]
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[[package]]
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@ -769,7 +754,7 @@ checksum = "bee689443a2bd0a16ab0348b52ee43e3b2d1b1f931c8aa5c9f8de4c86fbe8c40"
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dependencies = [
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"bit-set",
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"bit-vec",
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"bitflags 2.10.0",
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"bitflags",
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"num-traits",
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"rand",
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"rand_chacha",
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@ -953,7 +938,7 @@ version = "1.1.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "146c9e247ccc180c1f61615433868c99f3de3ae256a30a43b49f67c2d9171f34"
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dependencies = [
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"bitflags 2.10.0",
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"bitflags",
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"errno",
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"libc",
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"linux-raw-sys",
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@ -1052,7 +1037,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "446ba717509524cb3f22f17ecc096f10f4822d76ab5c0b9822c5f9c284e825f4"
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dependencies = [
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"cfg-if",
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"cpufeatures 0.3.0",
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"cpufeatures",
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"digest",
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]
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@ -1087,14 +1072,15 @@ dependencies = [
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[[package]]
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name = "strobe-rs"
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version = "0.5.4"
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version = "0.13.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1a9baee171ea889cfe5333700f0948777b483db8dc805c5c519ffe92e7714783"
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checksum = "83561175f0a962dea437885589480d216d8741debf853e0d36edd526344fd273"
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dependencies = [
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"bitflags 1.3.2",
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"bitflags",
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"byteorder",
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"keccak",
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"subtle",
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"tiny-keccak",
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"zeroize",
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]
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[[package]]
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@ -1144,15 +1130,6 @@ dependencies = [
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"windows-sys",
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]
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[[package]]
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name = "tiny-keccak"
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version = "2.0.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
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dependencies = [
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"crunchy",
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]
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[[package]]
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name = "tinytemplate"
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version = "1.2.1"
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@ -1336,7 +1313,7 @@ version = "0.244.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
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dependencies = [
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"bitflags 2.10.0",
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"bitflags",
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"hashbrown 0.15.5",
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"indexmap",
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"semver",
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@ -1440,7 +1417,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
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dependencies = [
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"anyhow",
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"bitflags 2.10.0",
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"bitflags",
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"indexmap",
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"log",
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"serde",
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@ -1517,6 +1494,20 @@ name = "zeroize"
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version = "1.8.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
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dependencies = [
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"zeroize_derive",
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]
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[[package]]
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name = "zeroize_derive"
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version = "1.4.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn 2.0.114",
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]
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[[package]]
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name = "zmij"
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@ -41,6 +41,7 @@ keccak = { version = "0.2", default-features = false, optional = true }
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rand_core = { version = "0.10", default-features = false, optional = true }
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serde = { version = "1.0", default-features = false, optional = true }
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zeroize = { version = "1.5", default-features = false, optional = true }
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strobe-rs = { version = "0.13", optional = true }
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[dev-dependencies]
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curve25519-dalek = { version = "=5.0.0-pre.6", default-features = false, features = [
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@ -60,7 +61,6 @@ serde_json = "1.0"
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criterion = { version = "0.5", features = ["html_reports"] }
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hex-literal = "1"
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serde = { version = "1.0", features = ["derive"] }
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strobe-rs = "0.5"
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toml = { version = "0.9" }
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[[bench]]
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@ -78,7 +78,7 @@ alloc = [
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"zeroize?/alloc",
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]
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batch = ["alloc", "dep:keccak", "rand_core"]
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batch = ["alloc", "dep:keccak", "rand_core", "strobe-rs"]
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fast = ["curve25519-dalek/precomputed-tables"]
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digest = ["signature/digest"]
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# Exposes the hazmat module
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@ -14,11 +14,10 @@ mod ed25519_benches {
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use ed25519_dalek::Signature;
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use ed25519_dalek::Signer;
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use ed25519_dalek::SigningKey;
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use rand_core::prelude::ThreadRng;
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use rand_core::rng;
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use getrandom::{SysRng, rand_core::UnwrapErr};
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fn sign(c: &mut Criterion) {
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let mut csprng: ThreadRng = rng();
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let mut csprng = UnwrapErr(SysRng);
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let keypair: SigningKey = SigningKey::generate(&mut csprng);
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let msg: &[u8] = b"";
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@ -26,7 +25,7 @@ mod ed25519_benches {
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}
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fn verify(c: &mut Criterion) {
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let mut csprng: ThreadRng = rng();
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let mut csprng = UnwrapErr(SysRng);
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let keypair: SigningKey = SigningKey::generate(&mut csprng);
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let msg: &[u8] = b"";
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let sig: Signature = keypair.sign(msg);
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@ -37,7 +36,7 @@ mod ed25519_benches {
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}
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fn verify_strict(c: &mut Criterion) {
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let mut csprng: ThreadRng = rng();
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let mut csprng = UnwrapErr(SysRng);
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let keypair: SigningKey = SigningKey::generate(&mut csprng);
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let msg: &[u8] = b"";
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let sig: Signature = keypair.sign(msg);
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@ -58,7 +57,7 @@ mod ed25519_benches {
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for size in BATCH_SIZES {
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let name = format!("size={size}");
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group.bench_function(name, |b| {
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let mut csprng: ThreadRng = rng();
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let mut csprng = UnwrapErr(SysRng);
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let keypairs: Vec<SigningKey> = (0..size)
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.map(|_| SigningKey::generate(&mut csprng))
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.collect();
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@ -78,7 +77,7 @@ mod ed25519_benches {
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fn verify_batch_signatures(_: &mut Criterion) {}
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fn key_generation(c: &mut Criterion) {
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let mut csprng: ThreadRng = rng();
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let mut csprng = UnwrapErr(SysRng);
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c.bench_function("Ed25519 keypair generation", move |b| {
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b.iter(|| SigningKey::generate(&mut csprng))
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@ -9,7 +9,6 @@
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//! Batch signature verification.
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mod strobe;
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mod transcript;
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use alloc::vec::Vec;
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@ -1,240 +0,0 @@
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//! Minimal implementation of (parts of) Strobe.
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use core::ops::{Deref, DerefMut};
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use keccak::Keccak;
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#[cfg(feature = "zeroize")]
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use zeroize::Zeroize;
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/// Strobe R value; security level 128 is hardcoded
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const STROBE_R: u8 = 166;
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const FLAG_I: u8 = 1;
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const FLAG_A: u8 = 1 << 1;
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const FLAG_C: u8 = 1 << 2;
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const FLAG_T: u8 = 1 << 3;
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const FLAG_M: u8 = 1 << 4;
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const FLAG_K: u8 = 1 << 5;
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fn transmute_state(st: &mut AlignedKeccakState) -> &mut [u64; 25] {
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unsafe { &mut *(st as *mut AlignedKeccakState as *mut [u64; 25]) }
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}
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/// This is a wrapper around 200-byte buffer that's always 8-byte aligned
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/// to make pointers to it safely convertible to pointers to [u64; 25]
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/// (since u64 words must be 8-byte aligned)
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#[derive(Clone)]
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#[repr(align(8))]
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struct AlignedKeccakState([u8; 200]);
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#[cfg(feature = "zeroize")]
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impl Drop for AlignedKeccakState {
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fn drop(&mut self) {
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self.0.zeroize();
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}
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}
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/// A Strobe context for the 128-bit security level.
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///
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/// Only `meta-AD`, `AD`, `KEY`, and `PRF` operations are supported.
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#[derive(Clone)]
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pub struct Strobe128 {
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state: AlignedKeccakState,
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pos: u8,
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pos_begin: u8,
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cur_flags: u8,
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}
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impl ::core::fmt::Debug for Strobe128 {
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fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
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// Ensure that the Strobe state isn't accidentally logged
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write!(f, "Strobe128: STATE OMITTED")
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}
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}
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impl Strobe128 {
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pub fn new(protocol_label: &[u8]) -> Strobe128 {
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let initial_state = {
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let mut st = AlignedKeccakState([0u8; 200]);
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st[0..6].copy_from_slice(&[1, STROBE_R + 2, 1, 0, 1, 96]);
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st[6..18].copy_from_slice(b"STROBEv1.0.2");
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Keccak::new().with_f1600(|f1600| f1600(transmute_state(&mut st)));
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st
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};
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let mut strobe = Strobe128 {
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state: initial_state,
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pos: 0,
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pos_begin: 0,
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cur_flags: 0,
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};
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strobe.meta_ad(protocol_label, false);
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strobe
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}
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pub fn meta_ad(&mut self, data: &[u8], more: bool) {
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self.begin_op(FLAG_M | FLAG_A, more);
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self.absorb(data);
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}
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pub fn ad(&mut self, data: &[u8], more: bool) {
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self.begin_op(FLAG_A, more);
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self.absorb(data);
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}
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pub fn prf(&mut self, data: &mut [u8], more: bool) {
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self.begin_op(FLAG_I | FLAG_A | FLAG_C, more);
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self.squeeze(data);
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}
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pub fn key(&mut self, data: &[u8], more: bool) {
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self.begin_op(FLAG_A | FLAG_C, more);
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self.overwrite(data);
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}
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}
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impl Strobe128 {
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fn run_f(&mut self) {
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self.state[self.pos as usize] ^= self.pos_begin;
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self.state[(self.pos + 1) as usize] ^= 0x04;
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self.state[(STROBE_R + 1) as usize] ^= 0x80;
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Keccak::new().with_f1600(|f1600| f1600(transmute_state(&mut self.state)));
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self.pos = 0;
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self.pos_begin = 0;
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}
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fn absorb(&mut self, data: &[u8]) {
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for byte in data {
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self.state[self.pos as usize] ^= byte;
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self.pos += 1;
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if self.pos == STROBE_R {
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self.run_f();
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}
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}
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}
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fn overwrite(&mut self, data: &[u8]) {
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for byte in data {
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self.state[self.pos as usize] = *byte;
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self.pos += 1;
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if self.pos == STROBE_R {
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self.run_f();
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}
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}
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}
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fn squeeze(&mut self, data: &mut [u8]) {
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for byte in data {
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*byte = self.state[self.pos as usize];
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self.state[self.pos as usize] = 0;
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self.pos += 1;
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if self.pos == STROBE_R {
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self.run_f();
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}
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}
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}
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fn begin_op(&mut self, flags: u8, more: bool) {
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// Check if we're continuing an operation
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if more {
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assert_eq!(
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self.cur_flags, flags,
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"You tried to continue op {:#b} but changed flags to {:#b}",
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self.cur_flags, flags,
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);
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return;
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}
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// Skip adjusting direction information (we just use AD, PRF)
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assert_eq!(
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flags & FLAG_T,
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0u8,
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"You used the T flag, which this implementation doesn't support"
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);
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let old_begin = self.pos_begin;
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self.pos_begin = self.pos + 1;
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self.cur_flags = flags;
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self.absorb(&[old_begin, flags]);
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// Force running F if C or K is set
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let force_f = 0 != (flags & (FLAG_C | FLAG_K));
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if force_f && self.pos != 0 {
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self.run_f();
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}
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}
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}
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impl Deref for AlignedKeccakState {
|
||||
type Target = [u8; 200];
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
&self.0
|
||||
}
|
||||
}
|
||||
|
||||
impl DerefMut for AlignedKeccakState {
|
||||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||
&mut self.0
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use strobe_rs::{self, SecParam};
|
||||
|
||||
#[test]
|
||||
fn test_conformance() {
|
||||
let mut s1 = super::Strobe128::new(b"Conformance Test Protocol");
|
||||
let mut s2 = strobe_rs::Strobe::new(b"Conformance Test Protocol", SecParam::B128);
|
||||
|
||||
// meta-AD(b"msg"); AD(msg)
|
||||
|
||||
let msg = [99u8; 1024];
|
||||
|
||||
s1.meta_ad(b"ms", false);
|
||||
s1.meta_ad(b"g", true);
|
||||
s1.ad(&msg, false);
|
||||
|
||||
s2.meta_ad(b"ms", false);
|
||||
s2.meta_ad(b"g", true);
|
||||
s2.ad(&msg, false);
|
||||
|
||||
// meta-AD(b"prf"); PRF()
|
||||
|
||||
let mut prf1 = [0u8; 32];
|
||||
s1.meta_ad(b"prf", false);
|
||||
s1.prf(&mut prf1, false);
|
||||
|
||||
let mut prf2 = [0u8; 32];
|
||||
s2.meta_ad(b"prf", false);
|
||||
s2.prf(&mut prf2, false);
|
||||
|
||||
assert_eq!(prf1, prf2);
|
||||
|
||||
// meta-AD(b"key"); KEY(prf output)
|
||||
|
||||
s1.meta_ad(b"key", false);
|
||||
s1.key(&prf1, false);
|
||||
|
||||
s2.meta_ad(b"key", false);
|
||||
s2.key(&prf2, false);
|
||||
|
||||
// meta-AD(b"prf"); PRF()
|
||||
|
||||
let mut prf1 = [0u8; 32];
|
||||
s1.meta_ad(b"prf", false);
|
||||
s1.prf(&mut prf1, false);
|
||||
|
||||
let mut prf2 = [0u8; 32];
|
||||
s2.meta_ad(b"prf", false);
|
||||
s2.prf(&mut prf2, false);
|
||||
|
||||
assert_eq!(prf1, prf2);
|
||||
}
|
||||
}
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
use super::MERLIN_PROTOCOL_LABEL;
|
||||
use super::strobe::Strobe128;
|
||||
use core::convert::Infallible;
|
||||
use strobe_rs::{SecParam, Strobe};
|
||||
|
||||
fn encode_usize_as_u32(x: usize) -> [u8; 4] {
|
||||
u32::try_from(x).expect("usize too large").to_le_bytes()
|
||||
|
|
@ -37,7 +37,7 @@ fn encode_usize_as_u32(x: usize) -> [u8; 4] {
|
|||
/// Merlin](https://merlin.cool/use/index.html) section.
|
||||
#[derive(Clone)]
|
||||
pub struct Transcript {
|
||||
strobe: Strobe128,
|
||||
strobe: Strobe,
|
||||
}
|
||||
|
||||
impl Transcript {
|
||||
|
|
@ -53,7 +53,7 @@ impl Transcript {
|
|||
/// the Merlin website for more details on why.
|
||||
pub fn new(label: &'static [u8]) -> Transcript {
|
||||
let mut transcript = Transcript {
|
||||
strobe: Strobe128::new(MERLIN_PROTOCOL_LABEL),
|
||||
strobe: Strobe::new(MERLIN_PROTOCOL_LABEL, SecParam::B128),
|
||||
};
|
||||
transcript.append_message(b"dom-sep", label);
|
||||
|
||||
|
|
@ -129,7 +129,7 @@ impl Transcript {
|
|||
/// [rekey_with_witness_bytes]: TranscriptRngBuilder::rekey_with_witness_bytes
|
||||
/// [finalize]: TranscriptRngBuilder::finalize
|
||||
pub struct TranscriptRngBuilder {
|
||||
strobe: Strobe128,
|
||||
strobe: Strobe,
|
||||
}
|
||||
|
||||
impl TranscriptRngBuilder {
|
||||
|
|
@ -183,7 +183,7 @@ impl TranscriptRngBuilder {
|
|||
/// Randomness](https://merlin.cool/transcript/rng.html) section of
|
||||
/// the Merlin website.
|
||||
pub struct TranscriptRng {
|
||||
strobe: Strobe128,
|
||||
strobe: Strobe,
|
||||
}
|
||||
|
||||
impl rand_core::TryRng for TranscriptRng {
|
||||
|
|
|
|||
Loading…
Reference in a new issue