feat: Remove x509_certificate (#1547)

* test: add tests for uncovered code

TSA request data is generated using OpenSSL

Author: cdmurph32

Cargo.lock

@@ -40,7 +40,6 @@ pdf = ["dep:lopdf"]
 rust_native_crypto = [
     "dep:const-oid",
     "dep:ecdsa",
-    "dep:der",
     "dep:num-bigint-dig",
     "dep:p256",
     "dep:p384",
@@ -120,8 +119,8 @@ config = { version = "0.14.0", default-features = false, features = [
 const-hex = "1.14"
 const-oid = { version = "0.9.6", optional = true }
 coset = "0.4.0"
+der = { version = "0.7.9", features = ["alloc"] }
 extfmt = "0.1.1"
-der = { version = "0.7.9", optional = true }
 ecdsa = { version = "0.16.9", features = ["digest", "sha2"], optional = true }
 ed25519-dalek = { version = "2.1.1", features = [
     "alloc",
@@ -185,7 +184,6 @@ thiserror = "2.0.17"
 url = "2.5.3"
 uuid = { version = "1.18.0", features = ["serde", "v4"] }
 web-time = "1.1"
-x509-certificate = "0.24.0"
 x509-parser = "0.16.0"
 zeroize = { version = "1.8", features = ["zeroize_derive"] }
 zip = { version = "6.0.0", default-features = false }
@@ -228,7 +226,6 @@ wstd = "0.5.4"
 # This list matches the `rust_native_crypto` feature since they are not optional on WASM.
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 const-oid = "0.9.6"
-der = "0.7.9"
 ecdsa = { version = "0.16.9", features = ["digest", "sha2"] }
 num-bigint-dig = "0.8.4"
 p256 = "0.13.2"
@@ -268,6 +265,7 @@ features = ["now"]
 
 [target.'cfg(all(target_arch = "wasm32", not(target_os = "wasi")))'.dependencies]
 chrono = { version = "0.4.39", default-features = false, features = [
+    "clock",
     "serde",
     "wasmbind",
 ] }

sdk/Cargo.toml

@@ -53,11 +53,12 @@ impl AssertionMetadata {
     pub const LABEL: &'static str = labels::ASSERTION_METADATA;
 
     pub fn new() -> Self {
+        // Get current time (platform-specific)
+        let date_time = Utc::now().to_rfc3339_opts(SecondsFormat::Millis, true);
+
         Self {
             reviews: None,
-            date_time: Some(DateT(
-                Utc::now().to_rfc3339_opts(SecondsFormat::Millis, true),
-            )),
+            date_time: Some(DateT(date_time)),
             reference: None,
             data_source: None,
             localizations: None,