generateCvv

generateCvv(
pan: string,
expiry: string,
passkey: string,
config: ComplianceConfig,
): string

Generates a 4-digit CVV, deriving the HMAC key inline. Use generateCvvFromKey() + a cached derivedKey for repeated calls.

Parameters

pan (string) — 16-digit PAN string
expiry (string) — "MM/YY" formatted expiry string
passkey (string) — Secret passkey (≥16 chars)
config (ComplianceConfig) — Optional compliance config (pbkdf2Iterations, keyId, onEvent)

Returns