Function derive_key 

pub fn derive_key(
    password: &[u8],
    salt: &[u8],
    output_len: usize,
) -> Result<Bytes, CryptoError>

Derive a key from password and salt using Argon2id.

Uses Argon2id with time_cost=3, mem_cost=65536 KiB (64 MiB), parallelism=4.

Errors

Returns CryptoError::KdfFailed if key derivation fails or if output_len is invalid.