The dev team upgraded the encryption algorithm to Ed25519. Ed25519 is efficient which is important for blockchain performance where each chain is expected to process large volumes of transactions.
The exercise of upgrading the encryption had independent value. It demonstrated the code is being written such that changing the encryption algorithm leaves the logic of all the validation checks intact. Put another way, the protocol works regardless of the encryption algorithm used.
As envisioned in Geeq’s White Paper,
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