Encryption of data from your prompt to LLM and cloud

From chatgpt: 

User Device

   |

   |  📡 TLS 1.3

   v

API Gateway / CDN

   |

   |  🔒 mTLS (optional)

   v

LLM Frontend (e.g., OpenAI API)

   |

   |  🔐 Internal encrypted service calls (gRPC, mTLS)

   v

LLM Core Services (Tokenizer, Model, Storage, Cache)

   |

   |  💾 At-rest encryption via AES-256

   v

Cloud Storage / Logs / Backups (with KMS/HSM)