# TAG_SIZE

> `const` **TAG\_SIZE**: `16` = `16`

Defined in: [packages/filecoin-encryption-envelope/src/constants.ts:69](https://github.com/FilOzone/synapse-sdk/blob/4fe24ea1c76c9b1fa1489b7cdbb1cc279bd2576a/packages/filecoin-encryption-envelope/src/constants.ts#L69)

GCM authentication tag size.