# ALG_A256KW

> `const` **ALG\_A256KW**: `-5` = `-5`

Defined in: [packages/filecoin-encryption-envelope/src/cose/constants.ts:80](https://github.com/FilOzone/synapse-sdk/blob/c853ca3d1b2e90933e6b15131bfa14059bc48fc7/packages/filecoin-encryption-envelope/src/cose/constants.ts#L80)

AES key wrap, RFC 9053 §6.2.1. The only wrap this version supports.