{
   "title":"p521-ss-hkdf-256-03: ECDH-SS direct w/ hkdf-sha-256 for 512-bit key",
   "input":{
      "plaintext":"This is the content.",
      "mac":{
         "alg":"HS512",
         "protected":{
            "alg":"HS512"
         },
         "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-SS"
               },
               "unprotected":{
                  "kid":"meriadoc.brandybuck@buckland.example"
               },
               "sender_key":{
                  "kty":"EC",
                  "crv":"P-521",
                  "x":"APP1tIC1Ey2__4aekg06nicpK3uvQELX7HPaZUXYf2qd-YCYZlR7L6RqW0CiGjNv9uyJ5srxdRb_St87pwbfZx4B",
                  "y":"AQMe7-xEu5s49sLiFXIGsY4FVgAxFe6HW1nT3sqOcqgkFs0_Y7fWpDkAGLc1Og3Qqmt7-8-7d0fTW1nNtf5RJqdM",
                  "d":"Af9IsRGlT6A-iPBgaSukjyB6A0LP6GTcw9wO-e71yUfMbb9YJMnjYFq1DBjjvxEyI35mjP-k115wW0q9LxYPvlRt"
               }
            }
         ]
      },
      "rng_stream":[
         "02D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E88522CD81CA6C3B47139724AD1D4309098EC"
      ]
   },
   "intermediates":{
      "CEK_hex":"74840B78F7E13E9182A4D9BC68D25B99DD166F3EAC240D4C37D9D50817257E2044D76BB28B061B3E0A2CACDBEE892C58C3815FF4090C754F8AE89A4A0E1C4CB1",
      "recipients":[
         {
            "Context_hex":"840783F6584002D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E88522CD81CA6C3B47139724AD1D4309098ECF683F6F6F68219020044A101381A",
            "Secret_hex":"017B26D9F28ADF910A8D0B7BDBC3A57682E2D267E4D14473AC38F4FDA6FF9B90CA6FB9D3A4BD4BC6235111D134223DAFB0B5399C4CD42D650ACDBDF0017D5F44F843"
         }
      ],
      "ToMac_hex":"84634D414343A101074054546869732069732074686520636F6E74656E742E"
   },
   "output":{
      "cbor_diag":"97([h'A10107', {}, h'546869732069732074686520636F6E74656E742E', h'AAC325E699B439C23393F5C233300408FBFB13984AF9086680B0D7A1BDA06098925AE520899034F2594989741850A780EB05C1D3839B36EB9FE0A258BCB04454', [[h'A101381A', {-2: {-1: 3, -2: h'00F3F5B480B5132DBFFF869E920D3A9E27292B7BAF4042D7EC73DA6545D87F6A9DF9809866547B2FA46A5B40A21A336FF6EC89E6CAF17516FF4ADF3BA706DF671E01', -3: h'01031EEFEC44BB9B38F6C2E2157206B18E0556003115EE875B59D3DECA8E72A82416CD3F63B7D6A4390018B7353A0DD0AA6B7BFBCFBB7747D35B59CDB5FE5126A74C', 1: 2}, 4: h'6D65726961646F632E6272616E64796275636B406275636B6C616E642E6578616D706C65', -22: h'02D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E88522CD81CA6C3B47139724AD1D4309098EC'}, h'']]])",
      "cbor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
   }
}