{
   "title":"HKDF-AES-256-04: Direct HKDF AES-256 - salt ",
   "input":{
      "plaintext":"This is the content.",
      "mac":{
         "alg":"HS512",
         "protected":{
            "alg":"HS512"
         },
         "recipients":[
            {
               "key":{
                  "kty":"oct",
                  "kid":"sec-256",
                  "use":"enc",
                  "k":"Dx4tPEtaaXiHlqW0w9Lh8B8uPUxbanmIl6a1xNPi8QA"
               },
               "protected":{
                  "alg":"HKDF-AES-256"
               },
               "unprotected":{
                  "kid":"our-secret",
                  "salt":"aabbccddeeffgghh"
               }
            }
         ]
      }
   },
   "intermediates":{
      "AAD_hex":"8369456E76656C6F70656443A1010A40",
      "CEK_hex":"257E6FA38CB4BF4DC52F0C03A87F0082E2CE2B049CA8258421EB88453FB4F2CC07714E91289D7AE3482C1C6861A75FA2744EE4D3C96549460576F09467A93A48",
      "recipients":[
         {
            "Context_hex":"840783F6F6F683F6F6F68219020043A1012C"
         }
      ],
      "ToMac_hex":"84634D414343A101074054546869732069732074686520636F6E74656E742E"
   },
   "output":{
      "cbor_diag":"97([h'A10107', {}, h'546869732069732074686520636F6E74656E742E', h'FF8A1F03CC225BC8213BA4B9A8163A58FCAA4B326A0CB349B2E03C23D8426ACD6BFC43E95B7F13430165253839AD48E94E1E5A3B9F9E653E74FD01EF267DC76C', [[h'A1012C', {-20: h'61616262636364646565666667676868', 4: h'6F75722D736563726574'}, h'']]])",
      "cbor":"D8618543A10107A054546869732069732074686520636F6E74656E742E5840FF8A1F03CC225BC8213BA4B9A8163A58FCAA4B326A0CB349B2E03C23D8426ACD6BFC43E95B7F13430165253839AD48E94E1E5A3B9F9E653E74FD01EF267DC76C818343A1012CA2335061616262636364646565666667676868044A6F75722D73656372657440"
   }
}