{
   "title":"MAC0 example with direct shared key and AES-MAC/64",
   "input":{
      "plaintext":"This is the content.",
      "mac0":{
         "protected":{
            "alg":"AES-MAC-256/64"
         },
         "recipients":[
            {
               "unprotected":{
                  "kid":"our-secret",
                  "alg":"direct"
               },
               "key":{
                  "kty":"oct",
                  "kid":"our-secret",
                  "use":"enc",
                  "k":"hJtXIZ2uSN5kbQfbtTNWbpdmhkV8FJG-Onbc6mxCcYg"
               }
            }
         ]
      }
   },
   "intermediates":{
      "ToMac_hex":"84644D41433043A1010F4054546869732069732074686520636F6E74656E742E",
      "CEK_hex":"849B57219DAE48DE646D07DBB533566E976686457C1491BE3A76DCEA6C427188"
   },
   "output":{
      "cbor_diag":"17([h'A1010F', {}, h'546869732069732074686520636F6E74656E742E', h'726043745027214F'])",
      "cbor":"D18443A1010FA054546869732069732074686520636F6E74656E742E48726043745027214F"
   }
}