diff options
Diffstat (limited to 'vendor/rfc6979')
| -rw-r--r-- | vendor/rfc6979/.cargo-checksum.json | 1 | ||||
| -rw-r--r-- | vendor/rfc6979/CHANGELOG.md | 40 | ||||
| -rw-r--r-- | vendor/rfc6979/Cargo.toml | 48 | ||||
| -rw-r--r-- | vendor/rfc6979/LICENSE-APACHE | 201 | ||||
| -rw-r--r-- | vendor/rfc6979/LICENSE-MIT | 25 | ||||
| -rw-r--r-- | vendor/rfc6979/README.md | 55 | ||||
| -rw-r--r-- | vendor/rfc6979/debian/patches/relax-test-deps.patch | 13 | ||||
| -rw-r--r-- | vendor/rfc6979/debian/patches/series | 1 | ||||
| -rw-r--r-- | vendor/rfc6979/src/ct_cmp.rs | 87 | ||||
| -rw-r--r-- | vendor/rfc6979/src/lib.rs | 149 | ||||
| -rw-r--r-- | vendor/rfc6979/tests/lib.rs | 14 |
11 files changed, 634 insertions, 0 deletions
diff --git a/vendor/rfc6979/.cargo-checksum.json b/vendor/rfc6979/.cargo-checksum.json new file mode 100644 index 0000000..056dc41 --- /dev/null +++ b/vendor/rfc6979/.cargo-checksum.json @@ -0,0 +1 @@ +{"files":{},"package":"f8dd2a808d456c4a54e300a23e9f5a67e122c3024119acbfd73e3bf664491cb2"}
\ No newline at end of file diff --git a/vendor/rfc6979/CHANGELOG.md b/vendor/rfc6979/CHANGELOG.md new file mode 100644 index 0000000..8cc1a0d --- /dev/null +++ b/vendor/rfc6979/CHANGELOG.md @@ -0,0 +1,40 @@ +# Changelog +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## 0.4.0 (2023-02-28) +### Changed +- MSRV 1.60 ([#628]) +- Decouple from `crypto-bigint` ([#639]) + +[#628]: https://github.com/RustCrypto/signatures/pull/628 +[#639]: https://github.com/RustCrypto/signatures/pull/639 + +## 0.3.1 (2022-11-03) +### Added +- Usage example ([#577]) + +[#577]: https://github.com/RustCrypto/signatures/pull/577 + +## 0.3.0 (2022-06-26) +### Changed +- Use `SimpleHmac` to implement `HmacDrbg` ([#499]) + +[#499]: https://github.com/RustCrypto/signatures/pull/499 + +## 0.2.0 (2022-05-08) +### Added +- License files ([#447]) + +### Changed +- Bump `hmac` dependency to v0.12 ([#433]) +- Bump `crypto-bigint` dependency to v0.4 ([#469]) + +[#433]: https://github.com/RustCrypto/signatures/pull/433 +[#447]: https://github.com/RustCrypto/signatures/pull/447 +[#469]: https://github.com/RustCrypto/signatures/pull/469 + +### 0.1.0 (2021-11-21) +- Initial release diff --git a/vendor/rfc6979/Cargo.toml b/vendor/rfc6979/Cargo.toml new file mode 100644 index 0000000..978868c --- /dev/null +++ b/vendor/rfc6979/Cargo.toml @@ -0,0 +1,48 @@ +# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO +# +# When uploading crates to the registry Cargo will automatically +# "normalize" Cargo.toml files for maximal compatibility +# with all versions of Cargo and also rewrite `path` dependencies +# to registry (e.g., crates.io) dependencies. +# +# If you are reading this file be aware that the original Cargo.toml +# will likely look very different (and much more reasonable). +# See Cargo.toml.orig for the original contents. + +[package] +edition = "2021" +rust-version = "1.61" +name = "rfc6979" +version = "0.4.0" +authors = ["RustCrypto Developers"] +description = """ +Pure Rust implementation of RFC6979: Deterministic Usage of the +Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA) +""" +readme = "README.md" +keywords = [ + "dsa", + "ecdsa", + "signature", +] +categories = [ + "cryptography", + "no-std", +] +license = "Apache-2.0 OR MIT" +repository = "https://github.com/RustCrypto/signatures/tree/master/rfc6979" + +[dependencies.hmac] +version = "0.12" +features = ["reset"] +default-features = false + +[dependencies.subtle] +version = "2" +default-features = false + +[dev-dependencies.hex-literal] +version = "0.4" + +[dev-dependencies.sha2] +version = "0.10" diff --git a/vendor/rfc6979/LICENSE-APACHE b/vendor/rfc6979/LICENSE-APACHE new file mode 100644 index 0000000..c394d8a --- /dev/null +++ b/vendor/rfc6979/LICENSE-APACHE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + +TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + +1. 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IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/vendor/rfc6979/README.md b/vendor/rfc6979/README.md new file mode 100644 index 0000000..de70e3d --- /dev/null +++ b/vendor/rfc6979/README.md @@ -0,0 +1,55 @@ +# [RustCrypto]: RFC6979 Deterministic Signatures + +[![crate][crate-image]][crate-link] +[![Docs][docs-image]][docs-link] +[![Build Status][build-image]][build-link] +![Apache2/MIT licensed][license-image] +![MSRV][rustc-image] +[![Project Chat][chat-image]][chat-link] + +Pure Rust implementation of RFC6979: Deterministic Usage of the +Digital Signature Algorithm (DSA) and Elliptic Curve Digital Signature Algorithm (ECDSA). + +Algorithm described in RFC 6979 ยง 3.2: +<https://tools.ietf.org/html/rfc6979#section-3> + +[Documentation][docs-link] + +## Minimum Supported Rust Version + +This crate requires **Rust 1.61** at a minimum. + +We may change the MSRV in the future, but it will be accompanied by a minor +version bump. + +## License + +All crates licensed under either of + + * [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0) + * [MIT license](http://opensource.org/licenses/MIT) + +at your option. + +### Contribution + +Unless you explicitly state otherwise, any contribution intentionally submitted +for inclusion in the work by you, as defined in the Apache-2.0 license, shall be +dual licensed as above, without any additional terms or conditions. + +[//]: # (badges) + +[crate-image]: https://buildstats.info/crate/rfc6979 +[crate-link]: https://crates.io/crates/rfc6979 +[docs-image]: https://docs.rs/rfc6979/badge.svg +[docs-link]: https://docs.rs/rfc6979/ +[build-image]: https://github.com/RustCrypto/signatures/actions/workflows/rfc6979.yml/badge.svg +[build-link]: https://github.com/RustCrypto/signatures/actions/workflows/rfc6979.yml +[license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg +[rustc-image]: https://img.shields.io/badge/rustc-1.61+-blue.svg +[chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg +[chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260048-signatures + +[//]: # (links) + +[RustCrypto]: https://github.com/RustCrypto diff --git a/vendor/rfc6979/debian/patches/relax-test-deps.patch b/vendor/rfc6979/debian/patches/relax-test-deps.patch new file mode 100644 index 0000000..f620ddd --- /dev/null +++ b/vendor/rfc6979/debian/patches/relax-test-deps.patch @@ -0,0 +1,13 @@ +Index: rfc6979/Cargo.toml +=================================================================== +--- rfc6979.orig/Cargo.toml ++++ rfc6979/Cargo.toml +@@ -42,7 +42,7 @@ version = "2" + default-features = false + + [dev-dependencies.hex-literal] +-version = "0.3" ++version = "0.4" + + [dev-dependencies.sha2] + version = "0.10" diff --git a/vendor/rfc6979/debian/patches/series b/vendor/rfc6979/debian/patches/series new file mode 100644 index 0000000..d304b8f --- /dev/null +++ b/vendor/rfc6979/debian/patches/series @@ -0,0 +1 @@ +relax-test-deps.patch diff --git a/vendor/rfc6979/src/ct_cmp.rs b/vendor/rfc6979/src/ct_cmp.rs new file mode 100644 index 0000000..8b216e6 --- /dev/null +++ b/vendor/rfc6979/src/ct_cmp.rs @@ -0,0 +1,87 @@ +//! Constant-time comparison helpers for [`ByteArray`]. + +use crate::{ArrayLength, ByteArray}; +use subtle::{Choice, ConditionallySelectable, ConstantTimeEq}; + +/// Constant-time equals. +pub(crate) fn ct_eq<N: ArrayLength<u8>>(a: &ByteArray<N>, b: &ByteArray<N>) -> Choice { + let mut ret = Choice::from(1); + + for (a, b) in a.iter().zip(b.iter()) { + ret.conditional_assign(&Choice::from(0), !a.ct_eq(b)); + } + + ret +} + +/// Constant-time less than. +/// +/// Inputs are interpreted as big endian integers. +pub(crate) fn ct_lt<N: ArrayLength<u8>>(a: &ByteArray<N>, b: &ByteArray<N>) -> Choice { + let mut borrow = 0; + + // Perform subtraction with borrow a byte-at-a-time, interpreting a + // no-borrow condition as the less-than case + for (&a, &b) in a.iter().zip(b.iter()).rev() { + let c = (b as u16).wrapping_add(borrow >> (u8::BITS - 1)); + borrow = (a as u16).wrapping_sub(c) >> u8::BITS as u8; + } + + !borrow.ct_eq(&0) +} + +#[cfg(test)] +mod tests { + const A: [u8; 4] = [0, 0, 0, 0]; + const B: [u8; 4] = [0, 0, 0, 1]; + const C: [u8; 4] = [0xFF, 0, 0, 0]; + const D: [u8; 4] = [0xFF, 0, 0, 1]; + const E: [u8; 4] = [0xFF, 0xFF, 0xFF, 0xFE]; + const F: [u8; 4] = [0xFF, 0xFF, 0xFF, 0xFF]; + + #[test] + fn ct_eq() { + use super::ct_eq; + + assert_eq!(ct_eq(&A.into(), &A.into()).unwrap_u8(), 1); + assert_eq!(ct_eq(&B.into(), &B.into()).unwrap_u8(), 1); + assert_eq!(ct_eq(&C.into(), &C.into()).unwrap_u8(), 1); + assert_eq!(ct_eq(&D.into(), &D.into()).unwrap_u8(), 1); + assert_eq!(ct_eq(&E.into(), &E.into()).unwrap_u8(), 1); + assert_eq!(ct_eq(&F.into(), &F.into()).unwrap_u8(), 1); + + assert_eq!(ct_eq(&A.into(), &B.into()).unwrap_u8(), 0); + assert_eq!(ct_eq(&C.into(), &D.into()).unwrap_u8(), 0); + assert_eq!(ct_eq(&E.into(), &F.into()).unwrap_u8(), 0); + } + + #[test] + fn ct_lt() { + use super::ct_lt; + + assert_eq!(ct_lt(&A.into(), &A.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&B.into(), &B.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&C.into(), &C.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&D.into(), &D.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&E.into(), &E.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&F.into(), &F.into()).unwrap_u8(), 0); + + assert_eq!(ct_lt(&A.into(), &B.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&A.into(), &C.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&B.into(), &A.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&C.into(), &A.into()).unwrap_u8(), 0); + + assert_eq!(ct_lt(&B.into(), &C.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&B.into(), &D.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&C.into(), &B.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&D.into(), &B.into()).unwrap_u8(), 0); + + assert_eq!(ct_lt(&C.into(), &D.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&C.into(), &E.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&D.into(), &C.into()).unwrap_u8(), 0); + assert_eq!(ct_lt(&E.into(), &C.into()).unwrap_u8(), 0); + + assert_eq!(ct_lt(&E.into(), &F.into()).unwrap_u8(), 1); + assert_eq!(ct_lt(&F.into(), &E.into()).unwrap_u8(), 0); + } +} diff --git a/vendor/rfc6979/src/lib.rs b/vendor/rfc6979/src/lib.rs new file mode 100644 index 0000000..817dda1 --- /dev/null +++ b/vendor/rfc6979/src/lib.rs @@ -0,0 +1,149 @@ +#![no_std] +#![doc = include_str!("../README.md")] +#![forbid(unsafe_code, clippy::unwrap_used)] +#![warn(missing_docs, rust_2018_idioms)] +#![doc( + html_logo_url = "https://raw.githubusercontent.com/RustCrypto/media/8f1a9894/logo.svg", + html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/media/8f1a9894/logo.svg" +)] + +//! ## Usage +//! +//! See also: the documentation for the [`generate_k`] function. +//! +//! ``` +//! use hex_literal::hex; +//! use rfc6979::consts::U32; +//! use sha2::{Digest, Sha256}; +//! +//! // NIST P-256 field modulus +//! const NIST_P256_MODULUS: [u8; 32] = +//! hex!("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551"); +//! +//! // Public key for RFC6979 NIST P256/SHA256 test case +//! const RFC6979_KEY: [u8; 32] = +//! hex!("C9AFA9D845BA75166B5C215767B1D6934E50C3DB36E89B127B8A622B120F6721"); +//! +//! // Test message for RFC6979 NIST P256/SHA256 test case +//! const RFC6979_MSG: &[u8; 6] = b"sample"; +//! +//! // Expected K for RFC6979 NIST P256/SHA256 test case +//! const RFC6979_EXPECTED_K: [u8; 32] = +//! hex!("A6E3C57DD01ABE90086538398355DD4C3B17AA873382B0F24D6129493D8AAD60"); +//! +//! let h = Sha256::digest(RFC6979_MSG); +//! let aad = b""; +//! let k = rfc6979::generate_k::<Sha256, U32>(&RFC6979_KEY.into(), &NIST_P256_MODULUS.into(), &h, aad); +//! assert_eq!(k.as_slice(), &RFC6979_EXPECTED_K); +//! ``` + +mod ct_cmp; + +pub use hmac::digest::generic_array::typenum::consts; + +use hmac::{ + digest::{ + core_api::BlockSizeUser, + generic_array::{ArrayLength, GenericArray}, + Digest, FixedOutput, FixedOutputReset, Mac, + }, + SimpleHmac, +}; + +/// Array of bytes representing a scalar serialized as a big endian integer. +pub type ByteArray<Size> = GenericArray<u8, Size>; + +/// Deterministically generate ephemeral scalar `k`. +/// +/// Accepts the following parameters and inputs: +/// +/// - `x`: secret key +/// - `n`: field modulus +/// - `h`: hash/digest of input message: must be reduced modulo `n` in advance +/// - `data`: additional associated data, e.g. CSRNG output used as added entropy +#[inline] +pub fn generate_k<D, N>( + x: &ByteArray<N>, + n: &ByteArray<N>, + h: &ByteArray<N>, + data: &[u8], +) -> ByteArray<N> +where + D: Digest + BlockSizeUser + FixedOutput<OutputSize = N> + FixedOutputReset, + N: ArrayLength<u8>, +{ + let mut hmac_drbg = HmacDrbg::<D>::new(x, h, data); + + loop { + let mut k = ByteArray::<N>::default(); + hmac_drbg.fill_bytes(&mut k); + + let k_is_zero = ct_cmp::ct_eq(&k, &ByteArray::default()); + if (!k_is_zero & ct_cmp::ct_lt(&k, n)).into() { + return k; + } + } +} + +/// Internal implementation of `HMAC_DRBG` as described in NIST SP800-90A. +/// +/// <https://csrc.nist.gov/publications/detail/sp/800-90a/rev-1/final> +/// +/// This is a HMAC-based deterministic random bit generator used compute a +/// deterministic ephemeral scalar `k`. +pub struct HmacDrbg<D> +where + D: Digest + BlockSizeUser + FixedOutputReset, +{ + /// HMAC key `K` (see RFC 6979 Section 3.2.c) + k: SimpleHmac<D>, + + /// Chaining value `V` (see RFC 6979 Section 3.2.c) + v: GenericArray<u8, D::OutputSize>, +} + +impl<D> HmacDrbg<D> +where + D: Digest + BlockSizeUser + FixedOutputReset, +{ + /// Initialize `HMAC_DRBG` + pub fn new(entropy_input: &[u8], nonce: &[u8], additional_data: &[u8]) -> Self { + let mut k = SimpleHmac::new(&Default::default()); + let mut v = GenericArray::default(); + + for b in &mut v { + *b = 0x01; + } + + for i in 0..=1 { + k.update(&v); + k.update(&[i]); + k.update(entropy_input); + k.update(nonce); + k.update(additional_data); + k = SimpleHmac::new_from_slice(&k.finalize().into_bytes()).expect("HMAC error"); + + // Steps 3.2.e,g: v = HMAC_k(v) + k.update(&v); + v = k.finalize_reset().into_bytes(); + } + + Self { k, v } + } + + /// Write the next `HMAC_DRBG` output to the given byte slice. + pub fn fill_bytes(&mut self, out: &mut [u8]) { + for out_chunk in out.chunks_mut(self.v.len()) { + self.k.update(&self.v); + self.v = self.k.finalize_reset().into_bytes(); + out_chunk.copy_from_slice(&self.v[..out_chunk.len()]); + } + + self.k.update(&self.v); + self.k.update(&[0x00]); + self.k = + SimpleHmac::new_from_slice(&self.k.finalize_reset().into_bytes()).expect("HMAC error"); + self.k.update(&self.v); + self.v = self.k.finalize_reset().into_bytes(); + } +} diff --git a/vendor/rfc6979/tests/lib.rs b/vendor/rfc6979/tests/lib.rs new file mode 100644 index 0000000..1b622f8 --- /dev/null +++ b/vendor/rfc6979/tests/lib.rs @@ -0,0 +1,14 @@ +//! Smoke tests which use `MockCurve` + +#![cfg(feature = "dev")] + +use elliptic_curve::dev::MockCurve; + +type Signature = ecdsa::Signature<MockCurve>; +type SignatureBytes = ecdsa::SignatureBytes<MockCurve>; + +#[test] +fn rejects_all_zero_signature() { + let all_zero_bytes = SignatureBytes::default(); + assert!(Signature::try_from(all_zero_bytes.as_ref()).is_err()); +} |