NIST Suite: Encryption & Decryption (Zkned)
The Zkned set contains instructions for the AES block cipher. The extension
defines 4 instructions for riscv32 and 7 instructions for riscv64. These
instructions can be used to implement AES-128, AES-196 and AES-256. The table
below lists all the instructions that are defined by the Zkned extension.
| 32-bit | 64-bit | Usage |
|---|---|---|
aes32dsi | aes64ds | Decryption Final Round |
aes32dsmi | aes64dsm | Decryption Middle Round |
aes32esi | aes64es | Encryption Final Round |
aes32esmi | aes64esm | Encryption Middle Round |
aes64ks1i | Key Schedule | |
aes64ks2 | Key Schedule | |
aes64im | Decryption Key Schedule |
This section contains usage examples for the 32-bit instructions and for the 64-bit instructions. These implementations can also be found in the GitHub repository with the examples for the entire Zk extension.