# ENVELOPE_TYPE

> `const` **ENVELOPE\_TYPE**: `"application/vnd.filecoin-encryption+cose"` = `'application/vnd.filecoin-encryption+cose'`

Defined in: [packages/filecoin-encryption-envelope/src/cose/constants.ts:107](https://github.com/FilOzone/synapse-sdk/blob/56f1ef3fb5ccfea19fb80cb59e997e381f37d85a/packages/filecoin-encryption-envelope/src/cose/constants.ts#L107)

`typ` header value identifying this envelope format.