Key used for signing or verifying assertions. For asymmetric algorithms (RS256, ES256): PEM string, PrivateKey (for signing), or PublicKey (for verification). For symmetric algorithms (HS256): Uint8Array or SymmetricKey (opaque).
Key used for signing or verifying assertions. For asymmetric algorithms (RS256, ES256): PEM string, PrivateKey (for signing), or PublicKey (for verification). For symmetric algorithms (HS256): Uint8Array or SymmetricKey (opaque).