pq25WordMnemonicToSeed derives a post-quantum key seed from a standard 25-word
Algorand mnemonic.
The seed is domain-separated by the PQ scheme, so the same mnemonic yields a
different key for each scheme, and a different key again from the ed25519
account that mnemonicToSecretKey derives from it.
Parameters
mn: string
A 25-word Algorand mnemonic
scheme: Uint8Array
The 2-byte ASCII PQ scheme identifier (e.g. "f1" for Falcon-1024)
Returns Uint8Array
The 32-byte seed to hand to the scheme's key generator
pq25WordMnemonicToSeed derives a post-quantum key seed from a standard 25-word Algorand mnemonic.
The seed is domain-separated by the PQ scheme, so the same mnemonic yields a different key for each scheme, and a different key again from the ed25519 account that
mnemonicToSecretKeyderives from it.