# `Ussd.Exceptions.NoEncryptionKeyConfiguredError`
[🔗](https://github.com/spesohq/ussd/blob/main/lib/ussd/exceptions.ex#L92)

Raised by `Ussd.Record.set_encrypted/4` and `get_encrypted/4` when no encryption key
is configured. Set `config :ussd, :encryption_key, "..."` (any length; it is hashed
down to an AES-256 key).

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*Consult [api-reference.md](api-reference.md) for complete listing*