The National Stock Exchange of India Limited (NSE) on December 28, 2023, issued a circular regarding the Encryption/Decryption of Interactive Messages Rollout Plan Update.
The following has been stated: -
•This is in reference to circulars NSE/CMTR/59089, NSE/FAOP/58695, NSE/CD/58901, NSE/COM/57478, and NSE/SLBS/59439, Exchange has implemented a software solution-based approach (a combination of TLS 1.3 security protocol and AES-256 bits-based symmetric encryption) for encryption of interactive message traffic between member applications and Exchange to enhance the security posture.
•Important instructions for implementation of the above:
Currently, Exchange has provided an interim coexistence phase for accepting both encrypted and non-encrypted message traffic, after which Exchange shall discontinue the non-encrypted message flow.
Member are requested to take note of the below coexistence timelines and shall ensure the readiness of their migration plan for Direct connection via NNF for handling the changes of Encryption interactive messages. There shall not be any further extension given on the below timelines.
•All members are requested to uninstall the existing NEAT Adapter version and use the latest version of the NEAT Adapter (NA) version as informed in Exchange circular NSE/MSD/59551 dated November 29, 2023.
•All other details as mentioned in the aforementioned circulars shall remain unchanged.
The detailed circular is given in the document attached below.
[Circular Ref. No: 79/2023]
