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diff --git a/docs/serverkeyformat.md b/docs/serverkeyformat.md new file mode 100644 index 00000000..feda9345 --- /dev/null +++ b/docs/serverkeyformat.md @@ -0,0 +1,29 @@ +# Server Key Format + +Dendrite stores the server signing key in the PEM format with the following structure. + +``` +-----BEGIN MATRIX PRIVATE KEY----- +Key-ID: ed25519:<Key Handle> + +<Base64 Encoded Key Data> +-----END MATRIX PRIVATE KEY----- +``` + +## Converting Synapse Keys + +If you have signing keys from a previous synapse server, you should ideally configure them as `old_private_keys` in your Dendrite config file. Synapse stores signing keys in the following format. + +``` +ed25519 <Key Handle> <Base64 Encoded Key Data> +``` + +To convert this key to Dendrite's PEM format, use the following template. **It is important to include the equals sign, as the key data needs to be padded to 32 bytes.** + +``` +-----BEGIN MATRIX PRIVATE KEY----- +Key-ID: ed25519:<Key Handle> + +<Base64 Encoded Key Data>= +-----END MATRIX PRIVATE KEY----- +```
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