dev: add sha3 dependency

Cargo.lock

@@ -1147,6 +1147,15 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "keccak"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ecc2af9a1119c51f12a14607e783cb977bde58bc069ff0c3da1095e635d70654"
+dependencies = [
+ "cpufeatures",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -1834,6 +1843,7 @@ dependencies = [
  "rosenpass-secret-memory",
  "rosenpass-to",
  "rosenpass-util",
+ "sha3",
  "static_assertions",
  "zeroize",
 ]
@@ -2134,6 +2144,16 @@ dependencies = [
  "syn 2.0.98",
 ]
 
+[[package]]
+name = "sha3"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "75872d278a8f37ef87fa0ddbda7802605cb18344497949862c0d4dcb291eba60"
+dependencies = [
+ "digest",
+ "keccak",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"

Cargo.toml

@@ -59,6 +59,7 @@ oqs-sys = { version = "0.9.1", default-features = false, features = [
     'kyber',
 ] }
 blake2 = "0.10.6"
+sha3 = "0.10.8"
 chacha20poly1305 = { version = "0.10.1", default-features = false, features = [
     "std",
     "heapless",

ciphers/Cargo.toml

@@ -24,3 +24,4 @@ zeroize = { workspace = true }
 chacha20poly1305 = { workspace = true }
 blake2 = { workspace = true }
 libcrux = { workspace = true, optional = true }
+sha3 = {workspace = true}