> Aztec.nr API reference, v6.0.0 (mainnet and testnet). Index: https://docs.aztec.network/aztec-nr-api/v6.0.0/llms.txt

# Function compute_authwit_nullifier

Module: `noir_aztec::authwit::auth`

```rust
pub fn compute_authwit_nullifier(on_behalf_of: AztecAddress, inner_hash: Field) -> Field
```

Computes the `authwit_nullifier` for a specific `on_behalf_of` and `inner_hash`

Using the `on_behalf_of` and the `inner_hash` to ensure that the nullifier is siloed for a specific `on_behalf_of`.

@param on_behalf_of The address that has authorized the `inner_hash` @param inner_hash The hash of the message to authorize