# ENVELOPE_TYPE

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

Defined in: [packages/filecoin-encryption-envelope/src/constants.ts:64](https://github.com/FilOzone/synapse-sdk/blob/4fe24ea1c76c9b1fa1489b7cdbb1cc279bd2576a/packages/filecoin-encryption-envelope/src/constants.ts#L64)

`typ` header value identifying this envelope format.