Refactor storage into a separate crate

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["askar-bbs", "askar-crypto"]
+members = ["askar-bbs", "askar-crypto", "askar-storage"]
 
 [package]
 name = "aries-askar"
@@ -26,65 +26,39 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [features]
 default = ["all_backends", "ffi", "logger", "migration"]
-all_backends = ["any", "postgres", "sqlite"]
-any = []
-ffi = ["any", "ffi-support", "logger"]
+all_backends = ["postgres", "sqlite"]
+ffi = ["ffi-support", "logger"]
 jemalloc = ["jemallocator"]
-logger = ["env_logger", "log"]
-postgres = ["sqlx", "sqlx/postgres", "sqlx/tls"]
-sqlite = ["num_cpus", "sqlx", "sqlx/sqlite"]
-pg_test = ["postgres"]
-migration = ["rmp", "rmp-serde"]
-
-[dev-dependencies]
-hex-literal = "0.3"
+logger = ["env_logger", "log", "askar-storage/log"]
+postgres = ["askar-storage/postgres"]
+sqlite = ["askar-storage/sqlite"]
+pg_test = ["askar-storage/pg_test"]
+migration = ["askar-storage/migration"]
 
 [dependencies]
-arc-swap = "1.6"
 async-lock = "2.5"
-async-stream = "0.3"
-bs58 = "0.4"
-chrono = "0.4"
-digest = "0.10"
 env_logger = { version = "0.9", optional = true }
 ffi-support = { version = "0.4", optional = true }
-futures-lite = "1.11"
-hex = "0.4"
-hmac = "0.12"
-itertools = "0.10"
 jemallocator = { version = "0.5", optional = true }
 log = { version = "0.4", optional = true }
-num_cpus = { version = "1.0", optional = true }
 once_cell = "1.5"
-percent-encoding = "2.0"
-rand = { version = "0.8", default-features = false }
-rmp = { version = "0.8.11", optional = true }
-rmp-serde = { version = "1.1.1", optional = true }
 serde = { version = "1.0", features = ["derive"] }
-serde_bytes = "0.11"
 serde_cbor = "0.11"
 serde_json = "1.0"
-sha2 = "0.10"
-tokio = { version = "1.5", features = ["time"] }
-url = { version = "2.1", default-features = false }
-uuid = { version = "1.2", features = ["v4"] }
-zeroize = "1.4"
+zeroize = "1.5"
 
 [dependencies.askar-crypto]
 version = "0.2.5"
 path = "./askar-crypto"
 features = ["all_keys", "any_key", "argon2", "crypto_box", "std"]
 
-[dependencies.sqlx]
-version = "0.6.2"
+[dependencies.askar-storage]
+version = "0.1.0"
+path = "./askar-storage"
 default-features = false
-features = ["chrono", "runtime-tokio-rustls", "macros"]
-optional = true
+features = ["any"]
 
 [profile.release]
 codegen-units = 1
 lto = true
 panic = "abort"
-
-[[test]]
-name = "backends"

askar-bbs/Cargo.toml

@@ -33,7 +33,7 @@ subtle = "2.4"
 criterion = "0.3"
 # override transitive dependency from criterion to support rust versions older than 1.60
 csv = "=1.1"
-hex-literal = "0.3"
+hex-literal = "0.4"
 serde-json-core = { version = "0.4", default-features = false, features = ["std"] }
 
 

askar-crypto/Cargo.toml

@@ -33,7 +33,7 @@ std_rng = ["getrandom", "rand/std", "rand/std_rng"]
 [dev-dependencies]
 base64 = { version = "0.13", default-features = false, features = ["alloc"] }
 criterion = "0.4"
-hex-literal = "0.3"
+hex-literal = "0.4"
 serde_cbor = "0.11"
 serde-json-core = { version = "0.5", default-features = false, features = ["std"] }
 
@@ -55,8 +55,8 @@ base64 = { version = "0.13", default-features = false }
 blake2 = { version = "0.10", default-features = false }
 block-modes = { version = "0.8", default-features = false, optional = true }
 bls12_381 = { version = "0.6", default-features = false, features = ["groups", "zeroize"], optional = true }
-chacha20 = { version = "0.7" }  # should match chacha20poly1305
-chacha20poly1305 = { version = "0.8", default-features = false, optional = true }
+chacha20 = { version = "0.8" }  # should match dependency of chacha20poly1305
+chacha20poly1305 = { version = "0.9", default-features = false, optional = true }
 crypto_box_rs = { package = "crypto_box", version = "0.6", default-features = false, features = ["u64_backend"], optional = true }
 curve25519-dalek = { version = "3.1", default-features = false, features = ["u64_backend"], optional = true }
 ed25519-dalek = { version = "1.0", default-features = false, features = ["u64_backend"], optional = true }
@@ -73,4 +73,4 @@ serde-json-core = { version = "0.5", default-features = false }
 subtle = "2.4"
 sha2 = { version = "0.10", default-features = false }
 x25519-dalek = { version = "=1.1", default-features = false, features = ["u64_backend"], optional = true }
-zeroize = { version = "1.4", features = ["zeroize_derive"] }
+zeroize = { version = "1.5", features = ["zeroize_derive"] }

askar-crypto/src/buffer/array.rs

@@ -129,7 +129,7 @@ impl<L: ArrayLength<u8>> From<GenericArray<u8, L>> for ArrayKey<L> {
 impl<L: ArrayLength<u8>> Debug for ArrayKey<L> {
     fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
         if cfg!(test) {
-            f.debug_tuple("ArrayKey").field(&*self).finish()
+            f.debug_tuple("ArrayKey").field(&self.0).finish()
         } else {
             f.debug_tuple("ArrayKey").field(&"<secret>").finish()
         }

askar-crypto/src/jwk/mod.rs

@@ -71,7 +71,7 @@ pub fn write_jwk_thumbprint<K: ToJwk + ?Sized>(
     buf.finalize()?;
     let hash = hasher.finalize();
     let mut buf = [0u8; 43];
-    let len = base64::encode_config_slice(&hash, base64::URL_SAFE_NO_PAD, &mut buf);
+    let len = base64::encode_config_slice(hash, base64::URL_SAFE_NO_PAD, &mut buf);
     output.buffer_write(&buf[..len])?;
     Ok(())
 }

askar-storage/Cargo.toml

@@ -0,0 +1,70 @@
+[package]
+name = "askar-storage"
+version = "0.1.0"
+authors = ["Hyperledger Aries Contributors <aries@lists.hyperledger.org>"]
+edition = "2021"
+description = "Hyperledger Aries Askar secure storage"
+license = "MIT OR Apache-2.0"
+readme = "README.md"
+repository = "https://github.com/hyperledger/aries-askar/"
+categories = ["cryptography", "database"]
+keywords = ["hyperledger", "aries", "ssi", "verifiable", "credentials"]
+rust-version = "1.58"
+
+[package.metadata.docs.rs]
+features = ["all_backends"]
+no-default-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[features]
+default = ["all_backends", "log"]
+all_backends = ["any", "postgres", "sqlite"]
+any = []
+migration = ["rmp-serde", "sqlx/macros"]
+postgres = ["sqlx", "sqlx/postgres", "sqlx/tls"]
+sqlite = ["sqlx", "sqlx/sqlite"]
+pg_test = ["postgres"]
+
+[dependencies]
+arc-swap = "1.6"
+async-lock = "2.5"
+async-stream = "0.3"
+bs58 = "0.4"
+chrono = "0.4"
+digest = "0.10"
+futures-lite = "1.11"
+hex = "0.4"
+hmac = "0.12"
+itertools = "0.10"
+log = { version = "0.4", optional = true }
+once_cell = "1.5"
+percent-encoding = "2.0"
+rmp-serde = { version= "1.1", optional = true }
+serde = { version = "1.0", features = ["derive"] }
+serde_cbor = "0.11"
+serde_json = "1.0"
+sha2 = "0.10"
+tokio = { version = "1.5", features = ["time"] }
+url = { version = "2.1", default-features = false }
+uuid = { version = "1.2", features = ["v4"] }
+zeroize = "1.5"
+
+[dependencies.askar-crypto]
+version = "0.2.5"
+path = "../askar-crypto"
+default-features = false
+features = ["alloc", "argon2", "chacha", "std_rng"]
+
+[dependencies.sqlx]
+version = "0.6.2"
+default-features = false
+features = ["chrono", "runtime-tokio-rustls"]
+optional = true
+
+[dev-dependencies]
+env_logger = "0.9"
+hex-literal = "0.4"
+rand = { version = "0.8" }
+
+[[test]]
+name = "backends"