enc — Encryption Algorithm

Location: header · Format: string

The JWE content-encryption algorithm (e.g. A256GCM, A256CBC-HS512) applied with the content-encryption key. Like alg, it must be understood and explicitly supported by the recipient, and should be pinned to an AEAD family for new designs rather than an arbitrary custom composition.

Defined in RFC 7516 §4.1.2.

Decode a JWT and inspect its enc claim in the TokenPrism debugger — free, entirely in your browser.