Add SP800-56C family

Fixes #876 

Signed-off-by: Joachim Vandersmissen <git@jvdsn.com>

Author: jvdsn

schema/cryptography-defs.json

@@ -1098,6 +1098,21 @@
         }
       ]
     },
+    {
+      "family": "SP800-56C",
+      "standard": [
+        {
+          "name": "SP800-56C",
+          "url": "https://doi.org/10.6028/NIST.SP.800-56Cr2"
+        }
+      ],
+      "variant": [
+        {
+          "pattern": "SP800_56C_(OneStep|TwoStep)[-{auxFunction}][-{dkmLength}]",
+          "primitive": "key-derive"
+        }
+      ]
+    },
     {
       "family": "BLAKE2",
       "standard": [