lux fhe

lux fhe

The fhe command provides tools for Fully Homomorphic Encryption (FHE) on the Lux network, including key generation, encryption, computation on encrypted data, and decryption.

These operations integrate with the T-Chain (Threshold chain) for on-chain FHE computation via precompiled contracts.

SCHEMES:

TFHE - Fast bootstrapping, boolean/small integer circuits BGV - Batched integer arithmetic CKKS - Approximate fixed-point arithmetic

Usage:

lux fhe

lux fhe decrypt

Decrypt a hex-encoded ciphertext using the FHE secret key.

Examples: lux fhe decrypt --key ./keys/secret.key --input <hex>

Usage:

lux fhe decrypt [flags]

Flags:

      --input string   Hex-encoded ciphertext
      --key string     Path to secret key file

lux fhe encrypt

Encrypt a boolean value using an FHE secret key. Outputs hex-encoded ciphertext to stdout.

Examples: lux fhe encrypt --key ./keys/secret.key --value true lux fhe encrypt --key ./keys/secret.key --value false

Usage:

lux fhe encrypt [flags]

Flags:

      --key string   Path to secret key file
      --value        Boolean value to encrypt

lux fhe eval

Evaluate a boolean operation on FHE-encrypted data without decrypting.

Requires bootstrap key for homomorphic evaluation.

Supported gates: AND, OR, XOR, NAND, NOR, XNOR, NOT

Examples: lux fhe eval --op AND --inputs ct1.hex,ct2.hex --bsk ./keys/bootstrap.key

Usage:

lux fhe eval [flags]

Flags:

      --op string   Boolean gate (AND, OR, XOR, NAND, NOR, XNOR, NOT) (default "AND")

lux fhe keygen

Generate a Fully Homomorphic Encryption key pair.

Produces a secret key (for decryption), public key (for encryption), and bootstrap key (for homomorphic operations).

Examples: lux fhe keygen lux fhe keygen --scheme PN11QP54 --output ./keys/

Usage:

lux fhe keygen [flags]

Flags:

      --output string   Output directory for keys (default: current dir)
      --scheme string   Parameter set (PN10QP27, PN11QP54, STD128, STD128Q) (default "PN10QP27")