How to Enable and Use Client-Side Encryption in Google Meet for End-to-End Secure Calls

In healthcare, financial services, legal counsel, and government sectors, meeting confidentiality is subject to strict regulatory compliance standards. While standard Google Meet video calls are encrypted in transit using industry-standard TLS and DTLS-SRTP, Google servers retain the technical capability to process call data for automated transcription, cloud recording, and live captions. For organisations demanding complete confidentiality, Google Workspace supports Client-Side Encryption (CSE) in Google Meet. With CSE enabled, audio, video, and screen sharing streams are encrypted on participants’ local client devices using keys managed entirely by your organisation, ensuring that neither Google nor any external third party can decrypt the conference.

How Client-Side Encryption Differs from Standard Encryption

Understanding the cryptographic boundary of Google Meet Client-Side Encryption is critical for compliance architecture:

• Standard Meet Encryption: Calls are encrypted between the user’s browser and Google’s data centres. Google handles transcoding, live closed caption generation, and noise reduction serverside.
• Client-Side Encryption (CSE): Encryption keys are provided by an external, customer-managed Key Management Service (KMS) identity provider. Media streams are encrypted before leaving the client browser and decrypted only on authorized participants’ devices. Google routes the encrypted packets through its infrastructure purely as an unreadable data conduit.

Prerequisites for Client-Side Encryption

To use CSE in Google Meet, the following organizational requirements must be met:

• An eligible Google Workspace edition (Enterprise Plus, Education Standard, or Education Plus).
• An established third-party Key Access Control List Service (KACLS) provider (such as Thales, Fortanix, Virtru, or a self-hosted KMS).
• Administrator activation of CSE within the Google Workspace Admin Console under Security > Access and data control > Client-side encryption.

Scheduling a Client-Side Encrypted Meeting in Google Calendar

Once your workspace administrator configures CSE, users can schedule secure meetings directly within Google Calendar on desktop browsers:

1. Open Google Calendar in Chrome, Edge, or Firefox.
2. Click Create > Event to open the event creation dialogue.
3. Fill in the meeting title, date, time, and invited guest email addresses.
4. Locate the Add Google Meet video conferencing section.
5. Click the Video call options gear icon beside the Meet button.
6. In the settings window, select the Security or Encryption tab.
7. Tick the box labelled Add client-side encryption (indicated by a distinct padlock shield icon).
8. A notification will confirm that additional security is active for this meeting.
9. Click Save and send invitations.

Joining and Verifying a CSE-Protected Video Call

When joining a call protected by client-side encryption:

1. Click the meeting link provided in your calendar event.
2. Before entering the green room, you may be prompted to authenticate with your organisation’s identity provider (IdP) to fetch the cryptographic key token.
3. In the pre-join lobby, verify that the padlock shield badge is displayed with the text “Client-side encrypted”.
4. Click Join now.
5. During the active call, a permanent shield indicator sits in the upper-left or lower-left corner of the video grid. Clicking this badge displays the cryptographic verification fingerprint, which can be compared out-of-band with other participants to confirm zero tampering.

Feature Limitations During Client-Side Encrypted Calls

Because Google servers cannot decrypt the media streams, certain cloud-dependent features are intentionally unavailable during CSE sessions:

• Cloud recording directly to Google Drive is disabled (participants must use local capture if permitted).
• Automated live closed captioning and translated subtitles cannot be generated serverside.
• Cloud noise cancellation algorithms are disabled (on-device local microphone noise reduction still functions).
• Dial-in phone access via PSTN is unavailable because standard telephone networks do not support client-side cryptographic keys.
• Third-party breakout room extensions and in-call live polling are restricted.

Managing External and Guest Attendees

External partners, clients, or cross-domain collaborators can join CSE meetings provided your organization’s Key Access Control List Service is configured to authenticate guest identities through SAML, OAuth, or external identity tokens. Guests will be redirected to verify credentials with your KMS before being admitted into the encrypted call.