cms: SignedData builder (#1051)

Author: bkstein

.github/workflows/cms.yml

@@ -39,7 +39,7 @@ jobs:
           toolchain: ${{ matrix.rust }}
           targets: ${{ matrix.target }}
       - uses: RustCrypto/actions/cargo-hack-install@master
-      - run: cargo hack build --target ${{ matrix.target }} --feature-powerset --exclude-features arbitrary,default,std
+      - run: cargo hack build --target ${{ matrix.target }} --feature-powerset --exclude-features arbitrary,default,std,builder
 
   minimal-versions:
     uses: RustCrypto/actions/.github/workflows/minimal-versions.yml@master

Cargo.lock

@@ -16,17 +16,27 @@ rust-version = "1.65"
 [dependencies]
 der = { version = "0.7.6", features = ["alloc", "derive", "oid", "pem"] }
 spki = { version = "0.7" }
-x509-cert = { version = "0.2", default-features = false, features = ["pem"] }
+x509-cert = { version = "0.2.3", default-features = false, features = ["pem"] }
 const-oid = { version = "0.9", features = ["db"] } # TODO: path = "../const-oid"
 
+# optional dependencies
+sha1 = { version = "0.10", optional = true}
+sha2 = { version = "0.10", optional = true}
+sha3 = { version = "0.10", optional = true}
+signature = { version = "2.1.0", features = ["digest", "alloc"], optional = true}
+
 [dev-dependencies]
 hex-literal = "0.4"
+pem-rfc7468 = "0.7.0"
 pkcs5 = { version = "0.7" }
+rsa = { version = "0.9.2", features = ["sha2"] }
+ecdsa = { version = "0.16.7", features = ["digest", "pem"] }
+p256 = "0.13.0"
 
 [features]
 alloc = ["der/alloc"]
 std = ["der/std", "spki/std"]
-
+builder = ["sha1", "sha2", "sha3", "signature", "std", "spki/alloc", "x509-cert/builder"]
 pem = ["alloc", "der/pem"]
 
 [package.metadata.docs.rs]