feat(external-seed): use positive_bytes

Author: stephan-naumann

tssh-pkcs11/src/pkcs11/mod.rs

@@ -668,17 +668,16 @@ pub unsafe extern "C" fn C_GetAttributeValue(
                 };
 
                 let modulus_bytes = match pub_key.key_data() {
-                    ssh_key::public::KeyData::Rsa(rsa_pub_key) => rsa_pub_key.n.as_bytes(),
+                    ssh_key::public::KeyData::Rsa(rsa_pub_key) => {
+                        rsa_pub_key.n.as_positive_bytes().unwrap()
+                    } //Todo:
                     _ => {
                         error!("Expected RSA public key");
                         return CKR_GENERAL_ERROR;
                     }
                 };
 
                 let mut rsa_key = modulus_bytes;
-                if modulus_bytes.first() == Some(&0x00) {
-                    rsa_key = &modulus_bytes[1..];
-                }
 
                 if attr.pValue.is_null() {
                     debug!("CKA_MODULUS size request");