# 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/56f1ef3fb5ccfea19fb80cb59e997e381f37d85a/packages/filecoin-encryption-envelope/src/cose/constants.ts#L80)

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