message: Updating C++ how-to to include DeterministicAead.
  GitOrigin-RevId:
diff: @@ -278,6 +278,7 @@ currently available or planned (the latter are listed in brackets).
  | Primitive | Implementations |
  | ------------------ | --------------------------------------------- |
  | AEAD | AES-GCM, AES-CTR-HMAC, AES-EAX |
  +| Deterministic AEAD | AES-SIV |
  | MAC | HMAC-SHA2 |
  | Digital Signatures | ECDSA over NIST curves, (Ed25519) |
  | Hybrid Encryption | ECIES with AEAD and HKDF |
  