In developing a hierarchical deterministic wallet, want to generate one random secret seed and declare it as the Master Secret Seed.
Then, add a sequential index (1, 2, 3,... n) to the Master Secret Seed to obtain a secret seed to generate key pairs for each one.
The maximum index number n will be less than a thousand.
Would this approach imply any security risk at all?
All secret seeds (including the Master Secret Seed) will be kept secret always. And the Master Secret Seed will NOT be used to create a keypair (no index 0 keypair)
My concern is that an attacker could log the public keys knowing that all come from sequential secret seeds.