Pci Encryption/decryption Controller !link! -

// 6. Write AAD length & data (if any) pci_write32(bar, AAD_LEN, aad_len); pci_write_burst(bar, AAD_BUF, aad, aad_len);

Encryption requires mathematical calculations. While modern CPUs are fast, offloading these tasks to a dedicated controller frees up your CPU for other tasks. This results in a snappier system, particularly during heavy disk operations like BitLocker decryption or secure boot processes. pci encryption/decryption controller

┌─────────────────────────────────────────────────────────┐ │ PCI Express Root Complex │ └───────────────────┬─────────────────────────────────────┘ │ PCIe Link ┌───────────────────▼─────────────────────────────────────┐ │ PCI Encryption/Decryption Controller │ ├───────────────┬───────────────┬─────────────────────────┤ │ PCIe Core │ DMA Engine │ Interrupt Controller │ │ (TLP handling)│ (scatter-gather)│ │ ├───────────────┴───────────────┴─────────────────────────┤ │ Crypto Core Pipeline │ │ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ │ │ │ AES-GCM │ │ SHA-256 │ │ RSA/ECC │ │ TRNG │ │ │ │ Engine │ │ Engine │ │ Engine │ │ │ │ │ └─────────┘ └─────────┘ └─────────┘ └─────────┘ │ ├─────────────────────────────────────────────────────────┤ │ Key RAM (secure, tamper-protected) │ │ Control & Status Registers (CSR) │ └─────────────────────────────────────────────────────────┘ This results in a snappier system, particularly during