{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/af72290911ba40cd80470f1ad63534fd\" frameborder=\"0\" width=\"1366\" height=\"1024\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":1024,"width":1366,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":1024,"thumbnail_width":1366,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/af72290911ba40cd80470f1ad63534fd-00001.gif","duration":1409,"title":"Lecture 25.3: Symmetric key cryptography"}