pub fn xmss_pk_from_sig<P: Params>(
idx: u32,
sig_xmss: &[u8],
m: &[u8],
pk_seed: &[u8],
adrs: &mut Adrs,
) -> Vec<u8> ⓘExpand description
Compute an XMSS public key (tree root) from an XMSS signature.
Implements Algorithm 11 of FIPS 205. Recovers the WOTS+ public key from the WOTS+ signature component, then walks up the authentication path to recompute the Merkle tree root. If the signature is valid, the returned root matches the original XMSS public key.
The sig_xmss input must be (len + h') * n bytes, and idx is the leaf index
that was used during signing.