Securely recording and retrieving encrypted video conferences

A method comprising:

• obtaining a meeting cryptographic key;
• transmitting, from a client device to a video conference provider, a request to initiate an encrypted video conference, the encrypted video conference including a plurality of participants;
• distributing the meeting cryptographic key to each participant of the plurality of participants;
• obtaining a public cryptographic key of a key pair, the key pair including the public cryptographic key and a private cryptographic key;
• encrypting the meeting cryptographic key using the public cryptographic key;
• transmitting, from the client device to the video conference provider, a request to record the video conference;
• encrypting audio and video from a microphone and image sensor of the client device using the meeting cryptographic key;
• transmitting the encrypted audio and video to the video conference provider;
• and
• providing the encrypted meeting cryptographic key to the video conference provider.

A system comprising:

• a non-transitory computer-readable medium;
• a communications interface;
• and
• a processor communicatively coupled to the non-transitory computer-readable medium and the communications interface, the processor configured to execute processor-executable instructions stored in the non-transitory computer-readable medium to:
• initiate an encrypted video conference;
• receive and store encrypted streams of audio and video from a plurality of participants of the video conference, the encrypted audio and video encrypted by the respective participants using an encrypted meeting cryptographic key, wherein the processor does not have access to the meeting cryptographic key;
• provide the encrypted streams of audio and video to the participants;
• receive and store an encrypted meeting cryptographic key;
• associate the encrypted audio and video with the encrypted meeting cryptographic key;
• terminate the encrypted video conference;
• receive a request for a portion of the stored encrypted audio and video and the encrypted meeting cryptographic key;
• and
• provide, in response to the request, the portion of the stored encrypted audio and video and the encrypted meeting cryptographic key.

A system comprising:

• a non-transitory computer-readable medium;
• a communications interface;
• a microphone;
• an image sensor;
• and
• a processor communicatively coupled to the non-transitory computer-readable medium, the communications interface, the microphone, and the image sensor the processor configured to execute processor-executable instructions stored in the non-transitory computer-readable medium to:
• receive audio from the microphone and video from the image sensor;
• obtain a meeting cryptographic key;
• transmit, to a video conference provider, a request to initiate an encrypted video conference, the encrypted video conference including a plurality of participants;
• distribute the meeting cryptographic key to each participant of the plurality of participants;
• obtain a public cryptographic key of a key pair, the key pair including the public cryptographic key and a private cryptographic key;
• encrypt the meeting cryptographic key using the public cryptographic key;
• transmit, to the video conference provider, a request to record the video conference;
• encrypt the audio and the video using the meeting cryptographic key;
• transmit the encrypted audio and video to the video conference provider;
• and
• transmit the encrypted meeting cryptographic key to the video conference provider.