• rcbrk
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    19 days ago

    Regarding encryption of the push message, from https://unifiedpush.org/developers/spec/android/ :

    Push message: This is an array of bytes (ByteArray) sent by the application server to the push server. The distributor sends this message to the end user application. It MUST be the raw POST data received by the push server (or the rewrite proxy if present). The message MUST be an encrypted content that follows RFC8291. Its size is between 1 and 4096 bytes (inclusive).