{
   "title":"p521-hkdf-256-02: ECDH-ES direct w/ hkdf-sha-256 for 256-bit key",
   "input":{
      "plaintext":"This is the content.",
      "enveloped":{
         "protected":{
            "alg":"A256GCM"
         },
         "recipients":[
            {
               "key":{
                  "kty":"EC",
                  "kid":"bilbo.baggins@hobbiton.example",
                  "use":"enc",
                  "crv":"P-521",
                  "x":"AHKZLLOsCOzz5cY97ewNUajB957y-C-U88c3v13nmGZx6sYl_oJXu9A5RkTKqjqvjyekWF-7ytDyRXYgCF5cj0Kt",
                  "y":"AdymlHvOiLxXkEhayXQnNCvDX4h9htZaCJN34kfmC6pV5OhQHiraVySsUdaQkAgDPrwQrJmbnX9cwlGfP-HqHZR1",
                  "d":"AAhRON2r9cqXX1hg-RoI6R1tX5p2rUAYdmpHZoC1XNM56KtscrX6zbKipQrCW9CGZH3T4ubpnoTKLDYJ_fF3_rJt"
               },
               "protected":{
                  "alg":"ECDH-ES"
               },
               "unprotected":{
                  "kid":"meriadoc.brandybuck@buckland.example"
               }
            }
         ]
      },
      "rng_stream":[
         "02D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E88527FAC271A4C7EA34B7E28D7BBB54C682BED7A",
         "512C9CC879517ADCF0FA768E"
      ]
   },
   "intermediates":{
      "AAD_hex":"8367456E637279707443A1010340",
      "CEK_hex":"1CC58ABC05DFD9128650821AAB212BA7E204D43DD9CF9FADBDCFEC7DD7454982",
      "recipients":[
         {
            "Context_hex":"840383F6F6F683F6F6F68219010044A1013818",
            "Secret_hex":"00BE0D3F8079635BBA8C5997158786A03FD3DD7F176CB006B91145695609376A9F9A159160268D32F4BB6F3AA6066EEA2C07ECF63D569BB242190A82AE14DEDD8867"
         }
      ]
   },
   "output":{
      "cbor_diag":"96([h'A10103', {5: h'512C9CC879517ADCF0FA768E'}, h'E4DAB91AE49A086F731CB0C9A4741A519033156C3CFA6B80FA8D5CB705A0676E5561C7B6', [[h'A1013818', {-1: {1: 2, -1: 3, -2: h'0186A55E1A9E1937CED31F184623A7BBAE115CFADB9A05A2913F67BB4D66B591EFC30D7C5857111837673D2050FC3AB3FE58697CED8A6FEC883107F1842ACDE6F9AA', -3: h'002034BC5484085C4DB6E98B381193B13C1C94A58BB14EDC72A7E9EDFED30F05F9A10EA7B61391B06A6D7711339B843F71238B4A3C3146334188C0B8E4804CD65D78'}, 4: h'6D65726961646F632E6272616E64796275636B406275636B6C616E642E6578616D706C65'}, h'']]])",
      "cbor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
   }
}