{
   "title":"p521-ss-hkdf-256-01: ECDH-SS direct w/ hkdf-sha-256 for 128-bit key",
   "input":{
      "plaintext":"This is the content.",
      "enveloped":{
         "protected":{
            "alg":"A128GCM"
         },
         "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":[
         "02D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E885252908DF901D1581A045444DD996E1704",
         "B9B63082660901A9B9CD87AA"
      ]
   },
   "intermediates":{
      "AAD_hex":"8367456E637279707443A1010140",
      "CEK_hex":"50E11567E9F580D3FC754ED3619961F1",
      "recipients":[
         {
            "Context_hex":"840183F6584002D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E885252908DF901D1581A045444DD996E1704F683F6F6F682188044A101381A",
            "Secret_hex":"017B26D9F28ADF910A8D0B7BDBC3A57682E2D267E4D14473AC38F4FDA6FF9B90CA6FB9D3A4BD4BC6235111D134223DAFB0B5399C4CD42D650ACDBDF0017D5F44F843"
         }
      ]
   },
   "output":{
      "cbor_diag":"96([h'A10101', {5: h'B9B63082660901A9B9CD87AA'}, h'4275EEA3F025755DC242556BD66FC87DA27B70C99228F16CA9661A37C813019F562DA26C', [[h'A101381A', {-2: {-1: 3, -2: h'00F3F5B480B5132DBFFF869E920D3A9E27292B7BAF4042D7EC73DA6545D87F6A9DF9809866547B2FA46A5B40A21A336FF6EC89E6CAF17516FF4ADF3BA706DF671E01', -3: h'01031EEFEC44BB9B38F6C2E2157206B18E0556003115EE875B59D3DECA8E72A82416CD3F63B7D6A4390018B7353A0DD0AA6B7BFBCFBB7747D35B59CDB5FE5126A74C', 1: 2}, 4: h'6D65726961646F632E6272616E64796275636B406275636B6C616E642E6578616D706C65', -22: h'02D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E885252908DF901D1581A045444DD996E1704'}, h'']]])",
      "cbor":"D8608443A10101A1054CB9B63082660901A9B9CD87AA58244275EEA3F025755DC242556BD66FC87DA27B70C99228F16CA9661A37C813019F562DA26C818344A101381AA321A4200321584200F3F5B480B5132DBFFF869E920D3A9E27292B7BAF4042D7EC73DA6545D87F6A9DF9809866547B2FA46A5B40A21A336FF6EC89E6CAF17516FF4ADF3BA706DF671E0122584201031EEFEC44BB9B38F6C2E2157206B18E0556003115EE875B59D3DECA8E72A82416CD3F63B7D6A4390018B7353A0DD0AA6B7BFBCFBB7747D35B59CDB5FE5126A74C01020458246D65726961646F632E6272616E64796275636B406275636B6C616E642E6578616D706C6535584002D1F7E6F26C43D4868D87CEB2353161740AACF1F7163647984B522A848DF1C3C9CF4DF2FE6C632BF7886413F76E885252908DF901D1581A045444DD996E170440"
   }
}