Research

Hashes, signatures and consensus can preserve an ordered claim. They cannot establish the external truth, authority or intent behind it.

An OTP output is short and temporary. Its real security depends on seed custody, moving-factor state, verification policy, session binding and recovery.

A secure cipher can fail when nonce state does not survive writers, restarts and rollbacks. Uniqueness is a property of the operating system around the primitive.

P-256, secp256k1, Ed25519 and X25519 name different layers, purposes and ecosystems. Selecting a curve never selects the complete construction.

PKCS #11 gives applications a common view of cryptographic devices. The key’s policy, lifecycle and operational meaning still depend on what lies behind the handle.

Supporting a second algorithm is easy. Moving a running system from one cryptographic regime to another is the real test of agility.

A secure session depends on more than fresh keys. The negotiation, participants and intended operation must be bound to the same cryptographic result.

Two messages can express the same data and still produce different signatures. Verification begins with the exact bytes a protocol chooses to protect.