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

# Function get_auth_witness

Module: `noir_aztec::oracle::auth_witness`

```rust
pub unconstrained fn get_auth_witness<let N: u32>(message_hash: Field) -> [Field; N]
```

Oracle wrapper to fetch an `auth_witness` for a given `message_hash` from the PXE.