Use array-bytes for All Array/Bytes/Hex Operations

bin/node-template/runtime/Cargo.toml

@@ -44,9 +44,9 @@ frame-system-rpc-runtime-api = { version = "4.0.0-dev", default-features = false
 pallet-transaction-payment-rpc-runtime-api = { version = "4.0.0-dev", default-features = false, path = "../../../frame/transaction-payment/rpc/runtime-api/" }
 
 # Used for runtime benchmarking
+array-bytes = { version = "4.1", optional = true }
 frame-benchmarking = { version = "4.0.0-dev", default-features = false, path = "../../../frame/benchmarking", optional = true }
 frame-system-benchmarking = { version = "4.0.0-dev", default-features = false, path = "../../../frame/system/benchmarking", optional = true }
-hex-literal = { version = "0.3.4", optional = true }
 
 # Local Dependencies
 pallet-template = { version = "4.0.0-dev", default-features = false, path = "../pallets/template" }
@@ -86,11 +86,11 @@ std = [
 	"sp-version/std",
 ]
 runtime-benchmarks = [
+	"array-bytes",
 	"frame-benchmarking/runtime-benchmarks",
 	"frame-support/runtime-benchmarks",
 	"frame-system-benchmarking",
 	"frame-system/runtime-benchmarks",
-	"hex-literal",
 	"pallet-balances/runtime-benchmarks",
 	"pallet-grandpa/runtime-benchmarks",
 	"pallet-template/runtime-benchmarks",

bin/node-template/runtime/src/lib.rs

@@ -516,15 +516,15 @@ impl_runtime_apis! {
 
 			let whitelist: Vec<TrackedStorageKey> = vec![
 				// Block Number
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac"),
 				// Total Issuance
-				hex_literal::hex!("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80").to_vec().into(),
+				array_bytes::hex_into_unchecked("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80"),
 				// Execution Phase
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a"),
 				// Event Count
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850"),
 				// System Events
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7"),
 			];
 
 			let mut batches = Vec::<BenchmarkBatch>::new();

bin/node/bench/Cargo.toml

@@ -9,6 +9,7 @@ license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+array-bytes = "4.1"
 clap = { version = "3.1.18", features = ["derive"] }
 log = "0.4.17"
 node-primitives = { version = "2.0.0", path = "../primitives" }
@@ -32,7 +33,6 @@ sp-tracing = { version = "5.0.0", path = "../../../primitives/tracing" }
 hash-db = "0.15.2"
 tempfile = "3.1.0"
 fs_extra = "1"
-hex = "0.4.0"
 rand = { version = "0.7.2", features = ["small_rng"] }
 lazy_static = "1.4.0"
 parity-util-mem = { version = "0.11.0", default-features = false, features = ["primitive-types"] }

bin/node/bench/src/generator.rs

@@ -37,8 +37,10 @@ pub fn generate_trie(
 	let (db, overlay) = {
 		let mut overlay = HashMap::new();
 		overlay.insert(
-			hex::decode("03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314")
-				.expect("null key is valid"),
+			array_bytes::hex2bytes(
+				"03170a2e7597b7b7e3d84c05391d139a62b157e78786d8c082f29dcf4c111314",
+			)
+			.expect("null key is valid"),
 			Some(vec![0]),
 		);
 		let mut trie = SimpleTrie { db, overlay: &mut overlay };

bin/node/cli/Cargo.toml

@@ -34,12 +34,12 @@ crate-type = ["cdylib", "rlib"]
 
 [dependencies]
 # third-party dependencies
+array-bytes = "4.1"
 clap = { version = "3.1.18", features = ["derive"], optional = true }
 codec = { package = "parity-scale-codec", version = "3.0.0" }
 serde = { version = "1.0.136", features = ["derive"] }
 jsonrpsee = { version = "0.15.1", features = ["server"] }
 futures = "0.3.21"
-hex-literal = "0.3.4"
 log = "0.4.17"
 rand = "0.8"
 

bin/node/cli/src/chain_spec.rs

@@ -19,7 +19,6 @@
 //! Substrate chain configurations.
 
 use grandpa_primitives::AuthorityId as GrandpaId;
-use hex_literal::hex;
 use kitchensink_runtime::{
 	constants::currency::*, wasm_binary_unwrap, AuthorityDiscoveryConfig, BabeConfig,
 	BalancesConfig, Block, CouncilConfig, DemocracyConfig, ElectionsConfig, GrandpaConfig,
@@ -98,84 +97,83 @@ fn staging_testnet_config_genesis() -> GenesisConfig {
 	)> = vec![
 		(
 			// 5Fbsd6WXDGiLTxunqeK5BATNiocfCqu9bS1yArVjCgeBLkVy
-			hex!["9c7a2ee14e565db0c69f78c7b4cd839fbf52b607d867e9e9c5a79042898a0d12"].into(),
+			array_bytes::hex_n_into_unchecked("9c7a2ee14e565db0c69f78c7b4cd839fbf52b607d867e9e9c5a79042898a0d12"),
 			// 5EnCiV7wSHeNhjW3FSUwiJNkcc2SBkPLn5Nj93FmbLtBjQUq
-			hex!["781ead1e2fa9ccb74b44c19d29cb2a7a4b5be3972927ae98cd3877523976a276"].into(),
+			array_bytes::hex_n_into_unchecked("781ead1e2fa9ccb74b44c19d29cb2a7a4b5be3972927ae98cd3877523976a276"),
 			// 5Fb9ayurnxnaXj56CjmyQLBiadfRCqUbL2VWNbbe1nZU6wiC
-			hex!["9becad03e6dcac03cee07edebca5475314861492cdfc96a2144a67bbe9699332"]
+			array_bytes::hex2array_unchecked("9becad03e6dcac03cee07edebca5475314861492cdfc96a2144a67bbe9699332")
 				.unchecked_into(),
 			// 5EZaeQ8djPcq9pheJUhgerXQZt9YaHnMJpiHMRhwQeinqUW8
-			hex!["6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106"]
+			array_bytes::hex2array_unchecked("6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106")
 				.unchecked_into(),
 			// 5EZaeQ8djPcq9pheJUhgerXQZt9YaHnMJpiHMRhwQeinqUW8
-			hex!["6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106"]
+			array_bytes::hex2array_unchecked("6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106")
 				.unchecked_into(),
 			// 5EZaeQ8djPcq9pheJUhgerXQZt9YaHnMJpiHMRhwQeinqUW8
-			hex!["6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106"]
+			array_bytes::hex2array_unchecked("6e7e4eb42cbd2e0ab4cae8708ce5509580b8c04d11f6758dbf686d50fe9f9106")
 				.unchecked_into(),
 		),
 		(
 			// 5ERawXCzCWkjVq3xz1W5KGNtVx2VdefvZ62Bw1FEuZW4Vny2
-			hex!["68655684472b743e456907b398d3a44c113f189e56d1bbfd55e889e295dfde78"].into(),
+			array_bytes::hex_n_into_unchecked("68655684472b743e456907b398d3a44c113f189e56d1bbfd55e889e295dfde78"),
 			// 5Gc4vr42hH1uDZc93Nayk5G7i687bAQdHHc9unLuyeawHipF
-			hex!["c8dc79e36b29395413399edaec3e20fcca7205fb19776ed8ddb25d6f427ec40e"].into(),
+			array_bytes::hex_n_into_unchecked("c8dc79e36b29395413399edaec3e20fcca7205fb19776ed8ddb25d6f427ec40e"),
 			// 5EockCXN6YkiNCDjpqqnbcqd4ad35nU4RmA1ikM4YeRN4WcE
-			hex!["7932cff431e748892fa48e10c63c17d30f80ca42e4de3921e641249cd7fa3c2f"]
+			array_bytes::hex2array_unchecked("7932cff431e748892fa48e10c63c17d30f80ca42e4de3921e641249cd7fa3c2f")
 				.unchecked_into(),
 			// 5DhLtiaQd1L1LU9jaNeeu9HJkP6eyg3BwXA7iNMzKm7qqruQ
-			hex!["482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e"]
+			array_bytes::hex2array_unchecked("482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e")
 				.unchecked_into(),
 			// 5DhLtiaQd1L1LU9jaNeeu9HJkP6eyg3BwXA7iNMzKm7qqruQ
-			hex!["482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e"]
+			array_bytes::hex2array_unchecked("482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e")
 				.unchecked_into(),
 			// 5DhLtiaQd1L1LU9jaNeeu9HJkP6eyg3BwXA7iNMzKm7qqruQ
-			hex!["482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e"]
+			array_bytes::hex2array_unchecked("482dbd7297a39fa145c570552249c2ca9dd47e281f0c500c971b59c9dcdcd82e")
 				.unchecked_into(),
 		),
 		(
 			// 5DyVtKWPidondEu8iHZgi6Ffv9yrJJ1NDNLom3X9cTDi98qp
-			hex!["547ff0ab649283a7ae01dbc2eb73932eba2fb09075e9485ff369082a2ff38d65"].into(),
+			array_bytes::hex_n_into_unchecked("547ff0ab649283a7ae01dbc2eb73932eba2fb09075e9485ff369082a2ff38d65"),
 			// 5FeD54vGVNpFX3PndHPXJ2MDakc462vBCD5mgtWRnWYCpZU9
-			hex!["9e42241d7cd91d001773b0b616d523dd80e13c6c2cab860b1234ef1b9ffc1526"].into(),
+			array_bytes::hex_n_into_unchecked("9e42241d7cd91d001773b0b616d523dd80e13c6c2cab860b1234ef1b9ffc1526"),
 			// 5E1jLYfLdUQKrFrtqoKgFrRvxM3oQPMbf6DfcsrugZZ5Bn8d
-			hex!["5633b70b80a6c8bb16270f82cca6d56b27ed7b76c8fd5af2986a25a4788ce440"]
+			array_bytes::hex2array_unchecked("5633b70b80a6c8bb16270f82cca6d56b27ed7b76c8fd5af2986a25a4788ce440")
 				.unchecked_into(),
 			// 5DhKqkHRkndJu8vq7pi2Q5S3DfftWJHGxbEUNH43b46qNspH
-			hex!["482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a"]
+			array_bytes::hex2array_unchecked("482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a")
 				.unchecked_into(),
 			// 5DhKqkHRkndJu8vq7pi2Q5S3DfftWJHGxbEUNH43b46qNspH
-			hex!["482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a"]
+			array_bytes::hex2array_unchecked("482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a")
 				.unchecked_into(),
 			// 5DhKqkHRkndJu8vq7pi2Q5S3DfftWJHGxbEUNH43b46qNspH
-			hex!["482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a"]
+			array_bytes::hex2array_unchecked("482a3389a6cf42d8ed83888cfd920fec738ea30f97e44699ada7323f08c3380a")
 				.unchecked_into(),
 		),
 		(
 			// 5HYZnKWe5FVZQ33ZRJK1rG3WaLMztxWrrNDb1JRwaHHVWyP9
-			hex!["f26cdb14b5aec7b2789fd5ca80f979cef3761897ae1f37ffb3e154cbcc1c2663"].into(),
+			array_bytes::hex_n_into_unchecked("f26cdb14b5aec7b2789fd5ca80f979cef3761897ae1f37ffb3e154cbcc1c2663"),
 			// 5EPQdAQ39WQNLCRjWsCk5jErsCitHiY5ZmjfWzzbXDoAoYbn
-			hex!["66bc1e5d275da50b72b15de072a2468a5ad414919ca9054d2695767cf650012f"].into(),
+			array_bytes::hex_n_into_unchecked("66bc1e5d275da50b72b15de072a2468a5ad414919ca9054d2695767cf650012f"),
 			// 5DMa31Hd5u1dwoRKgC4uvqyrdK45RHv3CpwvpUC1EzuwDit4
-			hex!["3919132b851ef0fd2dae42a7e734fe547af5a6b809006100f48944d7fae8e8ef"]
+			array_bytes::hex2array_unchecked("3919132b851ef0fd2dae42a7e734fe547af5a6b809006100f48944d7fae8e8ef")
 				.unchecked_into(),
 			// 5C4vDQxA8LTck2xJEy4Yg1hM9qjDt4LvTQaMo4Y8ne43aU6x
-			hex!["00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378"]
+			array_bytes::hex2array_unchecked("00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378")
 				.unchecked_into(),
 			// 5C4vDQxA8LTck2xJEy4Yg1hM9qjDt4LvTQaMo4Y8ne43aU6x
-			hex!["00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378"]
+			array_bytes::hex2array_unchecked("00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378")
 				.unchecked_into(),
 			// 5C4vDQxA8LTck2xJEy4Yg1hM9qjDt4LvTQaMo4Y8ne43aU6x
-			hex!["00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378"]
+			array_bytes::hex2array_unchecked("00299981a2b92f878baaf5dbeba5c18d4e70f2a1fcd9c61b32ea18daf38f4378")
 				.unchecked_into(),
 		),
 	];
 
 	// generated with secret: subkey inspect "$secret"/fir
-	let root_key: AccountId = hex![
+	let root_key: AccountId = array_bytes::hex_n_into_unchecked(
 		// 5Ff3iXP75ruzroPWRP2FYBHWnmGGBSb63857BgnzCoXNxfPo
-		"9ee5e5bdc0ec239eb164f865ecc345ce4c88e76ee002e0f7e318097347471809"
-	]
-	.into();
+		"9ee5e5bdc0ec239eb164f865ecc345ce4c88e76ee002e0f7e318097347471809",
+	);
 
 	let endowed_accounts: Vec<AccountId> = vec![root_key.clone()];
 

bin/node/runtime/Cargo.toml

@@ -14,13 +14,13 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 
 # third-party dependencies
+array-bytes = { version = "4.1", optional = true }
 codec = { package = "parity-scale-codec", version = "3.0.0", default-features = false, features = [
 	"derive",
 	"max-encoded-len",
 ] }
 scale-info = { version = "2.1.1", default-features = false, features = ["derive"] }
 static_assertions = "1.1.0"
-hex-literal = { version = "0.3.4", optional = true }
 log = { version = "0.4.17", default-features = false }
 
 # primitives
@@ -193,6 +193,7 @@ std = [
 	"pallet-alliance/std",
 ]
 runtime-benchmarks = [
+	"array-bytes",
 	"frame-benchmarking/runtime-benchmarks",
 	"frame-support/runtime-benchmarks",
 	"frame-system/runtime-benchmarks",
@@ -242,7 +243,6 @@ runtime-benchmarks = [
 	"pallet-vesting/runtime-benchmarks",
 	"pallet-whitelist/runtime-benchmarks",
 	"frame-system-benchmarking",
-	"hex-literal",
 ]
 try-runtime = [
 	"frame-try-runtime",

bin/node/runtime/src/lib.rs

@@ -2144,19 +2144,19 @@ impl_runtime_apis! {
 
 			let whitelist: Vec<TrackedStorageKey> = vec![
 				// Block Number
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef702a5c1b19ab7a04f536c519aca4983ac"),
 				// Total Issuance
-				hex_literal::hex!("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80").to_vec().into(),
+				array_bytes::hex_into_unchecked("c2261276cc9d1f8598ea4b6a74b15c2f57c875e4cff74148e4628f264b974c80"),
 				// Execution Phase
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef7ff553b5a9862a516939d82b3d3d8661a"),
 				// Event Count
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef70a98fdbe9ce6c55837576c60c7af3850"),
 				// System Events
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef780d41e5e16056765bc8461851072c9d7"),
 				// System BlockWeight
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef734abf5cb34d6244378cddbf18e849d96").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef734abf5cb34d6244378cddbf18e849d96"),
 				// Treasury Account
-				hex_literal::hex!("26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da95ecffd7b6c0f78751baa9d281e0bfa3a6d6f646c70792f74727372790000000000000000000000000000000000000000").to_vec().into(),
+				array_bytes::hex_into_unchecked("26aa394eea5630e07c48ae0c9558cef7b99d880ec681799c0cf30e8886371da95ecffd7b6c0f78751baa9d281e0bfa3a6d6f646c70792f74727372790000000000000000000000000000000000000000"),
 			];
 
 			let mut batches = Vec::<BenchmarkBatch>::new();

client/beefy/Cargo.toml

@@ -9,12 +9,12 @@ description = "BEEFY Client gadget for substrate"
 homepage = "https://substrate.io"
 
 [dependencies]
+array-bytes = "4.1"
 async-trait = "0.1.57"
 codec = { package = "parity-scale-codec", version = "3.0.0", features = ["derive"] }
 fnv = "1.0.6"
 futures = "0.3"
 futures-timer = "3.0.1"
-hex = "0.4.2"
 log = "0.4"
 parking_lot = "0.12.1"
 thiserror = "1.0"

client/beefy/src/lib.rs

@@ -69,9 +69,10 @@ pub(crate) mod beefy_protocol_name {
 		genesis_hash: &Hash,
 		chain_spec: &Box<dyn ChainSpec>,
 	) -> ProtocolName {
+		let genesis_hash = genesis_hash.as_ref();
 		let chain_prefix = match chain_spec.fork_id() {
-			Some(fork_id) => format!("/{}/{}", hex::encode(genesis_hash), fork_id),
-			None => format!("/{}", hex::encode(genesis_hash)),
+			Some(fork_id) => format!("/{}/{}", array_bytes::bytes2hex("", genesis_hash), fork_id),
+			None => format!("/{}", array_bytes::bytes2hex("", genesis_hash)),
 		};
 		format!("{}{}", chain_prefix, NAME).into()
 	}

client/beefy/src/tests.rs

@@ -99,7 +99,7 @@ fn beefy_protocol_name() {
 
 	// Create protocol name using random genesis hash.
 	let genesis_hash = H256::random();
-	let expected = format!("/{}/beefy/1", hex::encode(genesis_hash));
+	let expected = format!("/{}/beefy/1", array_bytes::bytes2hex("", genesis_hash.as_ref()));
 	let proto_name = beefy_protocol_name::standard_name(&genesis_hash, &chain_spec);
 	assert_eq!(proto_name.to_string(), expected);
 

client/cli/Cargo.toml

@@ -13,11 +13,11 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
+array-bytes = "4.1"
 chrono = "0.4.10"
 clap = { version = "3.1.18", features = ["derive"] }
 fdlimit = "0.2.1"
 futures = "0.3.21"
-hex = "0.4.2"
 libp2p = "0.46.1"
 log = "0.4.17"
 names = { version = "0.13.0", default-features = false }

client/cli/src/commands/generate_node_key.rs

@@ -57,7 +57,7 @@ impl GenerateNodeKeyCmd {
 		let file_data = if self.bin {
 			secret.as_ref().to_owned()
 		} else {
-			hex::encode(secret.as_ref()).into_bytes()
+			array_bytes::bytes2hex("", secret.as_ref()).into_bytes()
 		};
 
 		match &self.file {
@@ -85,6 +85,6 @@ mod tests {
 		assert!(generate.run().is_ok());
 		let mut buf = String::new();
 		assert!(file.read_to_string(&mut buf).is_ok());
-		assert!(hex::decode(buf).is_ok());
+		assert!(array_bytes::hex2bytes(&buf).is_ok());
 	}
 }

client/cli/src/commands/inspect_key.rs

@@ -127,7 +127,7 @@ fn expect_public_from_phrase<Pair: sp_core::Pair>(
 ) -> Result<(), Error> {
 	let secret_uri = SecretUri::from_str(suri).map_err(|e| format!("{:?}", e))?;
 	let expected_public = if let Some(public) = expect_public.strip_prefix("0x") {
-		let hex_public = hex::decode(&public)
+		let hex_public = array_bytes::hex2bytes(public)
 			.map_err(|_| format!("Invalid expected public key hex: `{}`", expect_public))?;
 		Pair::Public::try_from(&hex_public)
 			.map_err(|_| format!("Invalid expected public key: `{}`", expect_public))?
@@ -208,7 +208,7 @@ mod tests {
 			.expect("Valid")
 			.0
 			.public();
-		let valid_public_hex = format!("0x{}", hex::encode(valid_public.as_slice()));
+		let valid_public_hex = array_bytes::bytes2hex("0x", valid_public.as_slice());
 		let valid_accountid = format!("{}", valid_public.into_account());
 
 		// It should fail with the invalid public key
@@ -226,7 +226,7 @@ mod tests {
 				.0
 				.public();
 		let valid_public_hex_with_password =
-			format!("0x{}", hex::encode(&valid_public_with_password.as_slice()));
+			array_bytes::bytes2hex("0x", valid_public_with_password.as_slice());
 		let valid_accountid_with_password =
 			format!("{}", &valid_public_with_password.into_account());
 
@@ -248,7 +248,7 @@ mod tests {
 			.0
 			.public();
 		let valid_public_hex_with_password_and_derivation =
-			format!("0x{}", hex::encode(&valid_public_with_password_and_derivation.as_slice()));
+			array_bytes::bytes2hex("0x", valid_public_with_password_and_derivation.as_slice());
 
 		// They should still be valid, because we check the base secret key.
 		check_cmd(&seed_with_password_and_derivation, &valid_public_hex_with_password, true);

client/cli/src/commands/inspect_node_key.rs

@@ -66,7 +66,8 @@ impl InspectNodeKeyCmd {
 		if !self.bin {
 			// With hex input, give to the user a bit of tolerance about whitespaces
 			let keyhex = String::from_utf8_lossy(&file_data);
-			file_data = hex::decode(keyhex.trim()).map_err(|_| "failed to decode secret as hex")?;
+			file_data = array_bytes::hex2bytes(keyhex.trim())
+				.map_err(|_| "failed to decode secret as hex")?;
 		}
 
 		let secret =

client/cli/src/commands/sign.rs

@@ -70,7 +70,7 @@ fn sign<P: sp_core::Pair>(
 	message: Vec<u8>,
 ) -> error::Result<String> {
 	let pair = utils::pair_from_suri::<P>(suri, password)?;
-	Ok(hex::encode(pair.sign(&message)))
+	Ok(array_bytes::bytes2hex("", pair.sign(&message).as_ref()))
 }
 
 #[cfg(test)]