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Replace Ciphersuite::hash_to_F

Browse Source 
The prior-present `Ciphersuite::hash_to_F` was a sin. Implementations took a
DST, yet were not require to securely handle it. It was also biased towards the
requirements of `modular-frost` as `ciphersuite` was originally written all
those years ago, when `modular-frost` had needs exceeding what `ff`, `group`
satisfied.

Now, the hash is bound to produce an output which can be converted to a scalar
with `ff::FromUniformBytes`. A new `hash_to_F`, which accepts a single argument
of the value to hash (removing the potential to insecurely handle the DST by
removing the DST entirely). Due to `digest` yielding a `GenericArray`, yet
`FromUniformBytes` taking a `const usize`, the `ciphersuite` crate now defines
a `FromUniformBytes` trait taking an array (then implemented for all satisfiers
of `ff::FromUniformBytes`). In order to get the array type from the
`GenericArray`, the output of the hash, `digest` is updated to the `0.11`
release candidate which moves to `flexible-array` which solves that problem.

The existing, specific `hash_to_F` functions have been moved to `modular-frost`
as necessary.

`flexible-array` itself is patched to a fork due to
https://github.com/RustCrypto/hybrid-array/issues/131.
This commit is contained in:
Luke Parker
2025-08-29 05:04:03 -04:00
parent a4811c9a41
commit 90bc364f9f
37 changed files with 355 additions and 416 deletions
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168
Cargo.lock generated
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@@ -42,7 +42,7 @@ version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d122413f284cf2d62fb1b7db97e02edb8cda96d769b16e443a4f6195e35662b0"
dependencies = [
"crypto-common",
"crypto-common 0.1.6",
"generic-array 0.14.7",
]
@@ -353,7 +353,7 @@ dependencies = [
"ruint",
"rustc-hash 2.1.1",
"serde",
"sha3",
"sha3 0.10.8",
"tiny-keccak",
]
@@ -1524,6 +1524,15 @@ dependencies = [
"digest 0.10.7",
]
[[package]]
name = "blake2"
version = "0.11.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ce3d950855224a23299348898f8a2127860e1afea78df3e51deebb89d1cb2f8f"
dependencies = [
"digest 0.11.0-rc.0",
]
[[package]]
name = "blake2b_simd"
version = "1.0.3"
@@ -1577,6 +1586,15 @@ dependencies = [
"generic-array 0.14.7",
]
[[package]]
name = "block-buffer"
version = "0.11.0-rc.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a229bfd78e4827c91b9b95784f69492c1b77c1ab75a45a8a037b139215086f94"
dependencies = [
"hybrid-array",
]
[[package]]
name = "blst"
version = "0.3.15"
@@ -1895,7 +1913,7 @@ version = "0.4.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
dependencies = [
"crypto-common",
"crypto-common 0.1.6",
"inout",
"zeroize",
]
@@ -1904,7 +1922,7 @@ dependencies = [
name = "ciphersuite"
version = "0.4.2"
dependencies = [
"digest 0.10.7",
"digest 0.11.0-rc.0",
"ff",
"ff-group-tests",
"flexible-transcript",
@@ -1929,13 +1947,12 @@ name = "ciphersuite-kp256"
version = "0.4.0"
dependencies = [
"ciphersuite 0.4.2",
"elliptic-curve",
"ff-group-tests",
"hex",
"k256",
"p256",
"rand_core 0.6.4",
"sha2 0.10.9",
"sha2 0.11.0-rc.0",
"zeroize",
]
@@ -2326,6 +2343,15 @@ dependencies = [
"typenum",
]
[[package]]
name = "crypto-common"
version = "0.2.0-rc.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8a23fa214dea9efd4dacee5a5614646b30216ae0f05d4bb51bafb50e9da1c5be"
dependencies = [
"hybrid-array",
]
[[package]]
name = "ctr"
version = "0.9.2"
@@ -2440,7 +2466,7 @@ dependencies = [
"hex",
"rand_core 0.6.4",
"rustversion",
"sha2 0.10.9",
"sha2 0.11.0-rc.0",
"subtle",
"zeroize",
]
@@ -2517,7 +2543,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8d162beedaa69905488a8da94f5ac3edb4dd4788b732fadb7bd120b2625c1976"
dependencies = [
"data-encoding",
"syn 1.0.109",
"syn 2.0.106",
]
[[package]]
@@ -2674,7 +2700,18 @@ checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
dependencies = [
"block-buffer 0.10.4",
"const-oid",
"crypto-common",
"crypto-common 0.1.6",
"subtle",
]
[[package]]
name = "digest"
version = "0.11.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "460dd7f37e4950526b54a5a6b1f41b6c8e763c58eb9a8fc8fc05ba5c2f44ca7b"
dependencies = [
"block-buffer 0.11.0-rc.4",
"crypto-common 0.2.0-rc.3",
"subtle",
]
@@ -2756,7 +2793,7 @@ dependencies = [
name = "dkg-evrf"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"ciphersuite 0.4.2",
"ciphersuite-kp256",
"dalek-ff-group",
@@ -2986,7 +3023,7 @@ dependencies = [
name = "embedwards25519"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.11.0-rc.0",
"ciphersuite 0.4.2",
"curve25519-dalek",
"dalek-ff-group",
@@ -3102,7 +3139,7 @@ dependencies = [
"group",
"k256",
"rand_core 0.6.4",
"sha3",
"sha3 0.10.8",
"subtle",
"tokio",
]
@@ -3149,7 +3186,7 @@ version = "2.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5f86a749cf851891866c10515ef6c299b5c69661465e9c3bbe7e07a2b77fb0f7"
dependencies = [
"blake2",
"blake2 0.10.6",
"fs-err",
"proc-macro2",
"quote",
@@ -3276,10 +3313,10 @@ checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
name = "flexible-transcript"
version = "0.3.4"
dependencies = [
"blake2",
"digest 0.10.7",
"blake2 0.11.0-rc.0",
"digest 0.11.0-rc.0",
"merlin",
"sha2 0.10.9",
"sha2 0.11.0-rc.0",
"zeroize",
]
@@ -3728,7 +3765,7 @@ name = "generalized-bulletproofs"
version = "0.1.0"
source = "git+https://github.com/monero-oxide/monero-oxide?rev=a6f8797007e768488568b821435cf5006517a962#a6f8797007e768488568b821435cf5006517a962"
dependencies = [
"blake2",
"blake2 0.10.6",
"ciphersuite 0.4.99",
"ff",
"flexible-transcript",
@@ -4174,6 +4211,14 @@ version = "2.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b112acc8b3adf4b107a8ec20977da0273a8c386765a3ec0229bd500a1443f9f"
[[package]]
name = "hybrid-array"
version = "0.3.1"
source = "git+https://github.com/kayabaNerve/hybrid-array?rev=8caa508976c93696a67f40734537c91be7cecd96#8caa508976c93696a67f40734537c91be7cecd96"
dependencies = [
"typenum",
]
[[package]]
name = "hyper"
version = "0.14.30"
@@ -4685,7 +4730,7 @@ dependencies = [
[[package]]
name = "k256"
version = "0.13.4"
source = "git+https://github.com/kayabaNerve/elliptic-curves?rev=fc92333e222b7f0cbe268d2ca92ed572f71f3e1d#fc92333e222b7f0cbe268d2ca92ed572f71f3e1d"
source = "git+https://github.com/kayabaNerve/elliptic-curves?rev=4994c9ab163781a88cd4a49beae812a89a44e8c3#4994c9ab163781a88cd4a49beae812a89a44e8c3"
dependencies = [
"cfg-if",
"ecdsa",
@@ -4704,6 +4749,15 @@ dependencies = [
"cpufeatures",
]
[[package]]
name = "keccak"
version = "0.2.0-pre.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a7cdd4f0dc5807b9a2b25dd48a3f58e862606fe7bd47f41ecde36e97422d7e90"
dependencies = [
"cpufeatures",
]
[[package]]
name = "keccak-asm"
version = "0.1.4"
@@ -5936,7 +5990,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "58c38e2799fc0978b65dfff8023ec7843e2330bb462f19198840b34b6582397d"
dependencies = [
"byteorder",
"keccak",
"keccak 0.1.5",
"rand_core 0.6.4",
"zeroize",
]
@@ -5957,7 +6011,7 @@ dependencies = [
"hex",
"prime-field",
"rand_core 0.6.4",
"sha3",
"sha3 0.11.0-rc.0",
"zeroize",
]
@@ -6021,10 +6075,10 @@ dependencies = [
"ciphersuite 0.4.2",
"ciphersuite-kp256",
"dalek-ff-group",
"digest 0.10.7",
"dkg",
"dkg-dealer",
"dkg-recovery",
"elliptic-curve",
"flexible-transcript",
"hex",
"minimal-ed448",
@@ -6033,6 +6087,7 @@ dependencies = [
"rand_core 0.6.4",
"schnorr-signatures",
"serde_json",
"sha2 0.10.9",
"subtle",
"thiserror 2.0.16",
"zeroize",
@@ -6118,7 +6173,7 @@ dependencies = [
"dalek-ff-group",
"group",
"monero-io",
"sha3",
"sha3 0.10.8",
"std-shims",
"subtle",
]
@@ -6172,7 +6227,7 @@ dependencies = [
"curve25519-dalek",
"monero-generators",
"monero-io",
"sha3",
"sha3 0.10.8",
"std-shims",
"zeroize",
]
@@ -6286,7 +6341,7 @@ dependencies = [
"digest 0.10.7",
"multihash-derive 0.8.0",
"sha2 0.10.9",
"sha3",
"sha3 0.10.8",
"unsigned-varint 0.7.2",
]
@@ -6315,7 +6370,7 @@ dependencies = [
"ripemd",
"sha1",
"sha2 0.10.9",
"sha3",
"sha3 0.10.8",
"strobe-rs",
]
@@ -6714,8 +6769,7 @@ checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
[[package]]
name = "p256"
version = "0.13.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
source = "git+https://github.com/kayabaNerve/elliptic-curves?rev=4994c9ab163781a88cd4a49beae812a89a44e8c3#4994c9ab163781a88cd4a49beae812a89a44e8c3"
dependencies = [
"ecdsa",
"elliptic-curve",
@@ -6873,7 +6927,7 @@ version = "0.4.13"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "592a28a24b09c9dc20ac8afaa6839abc417c720afe42c12e1e4a9d6aa2508d2e"
dependencies = [
"blake2",
"blake2 0.10.6",
"crc32fast",
"fs2",
"hex",
@@ -7245,8 +7299,7 @@ dependencies = [
[[package]]
name = "primeorder"
version = "0.13.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
source = "git+https://github.com/kayabaNerve/elliptic-curves?rev=4994c9ab163781a88cd4a49beae812a89a44e8c3#4994c9ab163781a88cd4a49beae812a89a44e8c3"
dependencies = [
"elliptic-curve",
]
@@ -9539,7 +9592,7 @@ dependencies = [
name = "secq256k1"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.11.0-rc.0",
"ciphersuite 0.4.2",
"ff-group-tests",
"generalized-bulletproofs-ec-gadgets",
@@ -9692,7 +9745,7 @@ dependencies = [
"async-lock",
"bitcoin",
"bitvec",
"blake2",
"blake2 0.10.6",
"borsh",
"ciphersuite 0.4.2",
"ciphersuite-kp256",
@@ -9754,7 +9807,7 @@ name = "serai-coordinator"
version = "0.1.0"
dependencies = [
"bitvec",
"blake2",
"blake2 0.10.6",
"borsh",
"ciphersuite 0.4.2",
"dalek-ff-group",
@@ -9791,7 +9844,7 @@ name = "serai-coordinator-libp2p-p2p"
version = "0.1.0"
dependencies = [
"async-trait",
"blake2",
"blake2 0.10.6",
"borsh",
"futures-util",
"hex",
@@ -9845,7 +9898,7 @@ dependencies = [
name = "serai-coordinator-tributary"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"borsh",
"ciphersuite 0.4.2",
"dalek-ff-group",
@@ -9868,7 +9921,7 @@ dependencies = [
name = "serai-cosign"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"borsh",
"log",
"parity-scale-codec",
@@ -10408,7 +10461,7 @@ dependencies = [
name = "serai-processor-key-gen"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"borsh",
"ciphersuite 0.4.2",
"dkg-evrf",
@@ -10456,7 +10509,7 @@ dependencies = [
name = "serai-processor-scanner"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"borsh",
"group",
"hex",
@@ -10488,7 +10541,7 @@ dependencies = [
name = "serai-processor-signers"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"borsh",
"ciphersuite 0.4.2",
"dalek-ff-group",
@@ -10887,6 +10940,17 @@ dependencies = [
"digest 0.10.7",
]
[[package]]
name = "sha2"
version = "0.11.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aa1d2e6b3cc4e43a8258a9a3b17aa5dfd2cc5186c7024bba8a64aa65b2c71a59"
dependencies = [
"cfg-if",
"cpufeatures",
"digest 0.11.0-rc.0",
]
[[package]]
name = "sha3"
version = "0.10.8"
@@ -10894,7 +10958,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
dependencies = [
"digest 0.10.7",
"keccak",
"keccak 0.1.5",
]
[[package]]
name = "sha3"
version = "0.11.0-rc.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b9e6a92fd180fd205defdc0b78288ce847c7309d329fd6647a814567e67db50e"
dependencies = [
"digest 0.11.0-rc.0",
"keccak 0.2.0-pre.0",
]
[[package]]
@@ -11026,7 +11100,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "850948bee068e713b8ab860fe1adc4d109676ab4c3b621fd8147f06b261f2f85"
dependencies = [
"aes-gcm",
"blake2",
"blake2 0.10.6",
"chacha20poly1305",
"curve25519-dalek",
"rand_core 0.6.4",
@@ -11114,7 +11188,7 @@ version = "4.0.0-dev"
source = "git+https://github.com/serai-dex/substrate#8587cd89bec74f789d4e23fdf776508a0ed5db6f"
dependencies = [
"Inflector",
"blake2",
"blake2 0.10.6",
"expander",
"proc-macro-crate 1.3.1",
"proc-macro2",
@@ -11260,7 +11334,7 @@ source = "git+https://github.com/serai-dex/substrate#8587cd89bec74f789d4e23fdf77
dependencies = [
"array-bytes",
"bitflags 1.3.2",
"blake2",
"blake2 0.10.6",
"bounded-collections",
"bs58",
"dyn-clonable",
@@ -11304,7 +11378,7 @@ dependencies = [
"blake2b_simd",
"byteorder",
"digest 0.10.7",
"sha3",
"sha3 0.10.8",
"twox-hash",
]
@@ -11799,7 +11873,7 @@ checksum = "fabb238a1cccccfa4c4fb703670c0d157e1256c1ba695abf1b93bd2bb14bab2d"
dependencies = [
"bitflags 1.3.2",
"byteorder",
"keccak",
"keccak 0.1.5",
"subtle",
"zeroize",
]
@@ -12534,7 +12608,7 @@ dependencies = [
name = "tributary-sdk"
version = "0.1.0"
dependencies = [
"blake2",
"blake2 0.10.6",
"ciphersuite 0.4.2",
"dalek-ff-group",
"flexible-transcript",
@@ -12747,7 +12821,7 @@ version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fc1de2c688dc15305988b563c3854064043356019f97a4b46276fe734c4f07ea"
dependencies = [
"crypto-common",
"crypto-common 0.1.6",
"subtle",
]