Edit Mozilla MLS Explainer. - #2
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cindylindeed
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Aug 31, 2026
| A client first creates a local MLS identity, which includes the credential and public key package used to participate in groups. The application stores or publishes this identity through its own service so other clients can add this client to a group. | ||
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| ```js | ||
| const identity = await mls.createIdentity("alice@example"); |
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Some questions:
- It's not 100% clear to me whether
createIdentity()also generates the key package. - Is
alice@examplethe credential in this case? - Are Alice's private keys generated at this step too?
cindylindeed
commented
Aug 31, 2026
| ### Exporting an application secret | ||
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| Some applications need group-derived secret material for application-specific cryptographic operations. For example, a file sharing application might use an exported secret to encrypt a file. Bytes exported from the group are converted to a WebCrypto API AES-256-GCM key. | ||
| Some applications need group-derived secret material for cryptographic operations external to MLS. For example, a file sharing application might use an exported secret to encrypt a file. Bytes exported from the group are converted to a WebCrypto API AES-256-GCM key. |
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Is it conventional to hard-code the key type instead of using a more generic container?
cindylindeed
commented
Aug 31, 2026
| ### Preparing a client | ||
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| A client first creates a local MLS identity, which includes the credential and key package needed to participate in groups. The application can then store or publish this identity through its own service so that another client can add this client to a group. | ||
| A client first creates a local MLS identity, which includes the credential and public key package used to participate in groups. The application stores or publishes this identity through its own service so other clients can add this client to a group. |
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Any plans to bake in key rotation from the get-go? 😁
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Reviewed as requested by @Frosne.