Add From implementation to Certificate when cert_nossl

.gitignore

@@ -1,2 +1,3 @@
 /target
-.vscode/
+.vscode/
+.zed/

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sev"
-version = "7.1.0"
+version = "7.1.1"
 authors = [
     "Nathaniel McCallum <[email protected]>",
     "The VirTEE Project Developers",

src/certs/snp/cert_nossl.rs

@@ -62,6 +62,11 @@ impl Verifiable for (&Certificate, &Certificate) {
 }
 
 impl Certificate {
+    /// Gets a reference to the X509 certificate inside
+    pub fn cert(&self) -> &x509_cert::Certificate {
+        &self.0
+    }
+
     /// Create a Certificate from a PEM-encoded X509 structure.
     pub fn from_pem(pem: &[u8]) -> Result<Self> {
         let cert = x509_cert::Certificate::from_pem(pem)
@@ -106,3 +111,15 @@ impl Certificate {
 fn io_error_other<S: Into<String>>(error: S) -> io::Error {
     io::Error::new(ErrorKind::Other, error.into())
 }
+
+impl From<x509_cert::Certificate> for Certificate {
+    fn from(value: x509_cert::Certificate) -> Self {
+        Self(value)
+    }
+}
+
+impl From<Certificate> for x509_cert::Certificate {
+    fn from(Certificate(cert): Certificate) -> Self {
+        cert
+    }
+}