Extract Keys from License Server response

13th Mar 2024 14:03 #1

‎

I just got a promising response from a license server and i'm pretty sure that the keys are under "contentKeyIds".
While i'm aware that these are Base64 encoded (hex), i'm not sure how to get them into the <keyid>:<key> format.
There's a DEFAULT_KID in the original mpd (

Code:

872DEBCC-B7C8-4B6F-91A1-7F69B2A13A24

) but it's above PlayReady, so i think it belongs to that.
The Widevine PSSH (Box!) is:

Code:

AAAAeXBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAFkIARIQhy3rzLfIS2+RoX9psqE6JBoGYW1hem9uIjVjaWQ6TFk4N3Y1RnZRK1NqTkpVYXM2MnREUT09LGh5M3J6TGZJUzIrUm9YOXBzcUU2SkE9PSoCU0QyAA==

whose Key ID then is:

Code:

872debcc-b7c8-4b6f-91a1-7f69b2a13a24

I AM USING FREEVEE!

Code:

{
  "returnedTitleRendition": {
    "asin": "B0CLZ3RFDY",
    "assetBundleVideoQuality": "HD",
    "audioQuality": "Stereo",
    "contentId": "amzn1.dv.vcid.a6cd5789-8c99-4c15-8212-6aae570e2082",
    "pid": "com.amazon.playback.object.vod.19329F47-5ADF-42C1-8C8B-1487B6C254EA",
    "selectedEntitlement": {
      "benefit": "freewithads",
      "consumptionExpiration": "1710618721626",
      "entitlementType": "THIRD_PARTY_SUBSCRIPTION",
      "grantedByCustomerId": "A195Q9JBOPVNNR",
      "tierId": "amzn1.dv.spbcmd.d3b9f545-452a-4a08-8a00-f925e0929ea9"
    },
    "titleId": "B0CLZ3RFDY",
    "videoMaterialType": "Feature",
    "videoQuality": "HD",
    "videoResolution": "720p"
  },
  "widevine2License": {
    "license": "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",
    "metadata": {
      "keyIds": {
        "contentKeyIds": [
          "LY87v5FvQ+SjNJUas62tDQ==",
          "hy3rzLfIS2+RoX9psqE6JA=="
        ],
        "hdcpTestKeyId": "t3DVtLtrWU2vmFhFqumqXw=="
      },
      "keyMetadata": [
        {
          "hdcp": {
            "hdcp": "HDCP_V1"
          },
          "id": "t3DVtLtrWU2vmFhFqumqXw==",
          "keyType": "HDCP_TEST"
        },
        {
          "hdcp": {
            "hdcp": "HDCP_NONE"
          },
          "id": "LY87v5FvQ+SjNJUas62tDQ==",
          "keyType": "CONTENT"
        },
        {
          "hdcp": {
            "hdcp": "HDCP_NONE"
          },
          "id": "hy3rzLfIS2+RoX9psqE6JA==",
          "keyType": "CONTENT"
        }
      ]
    }
  }
}

Quote

Similar Threads