In VPayment web, open Administration → Public and Private Keys, select Register Keys, and confirm Register and download.LlavesSHA2.zip contains:
*_PASARELA_*.txt: SHA-2 key required to sign and validate VPOS.
*_WALLET_*.txt: use it only if Wallet was enabled for the merchant.
Public and private RSA files: not required for Redirect.
Each key registration immediately replaces the previous keys. Store the ZIP securely and regenerate only when necessary or according to the merchant policy.