size of 2^19 bits (2^16 bytes, 64 KiB). type hmacDRBG struct { newHMAC func(key []byte) *hmac.HMAC hK *hmac.HMAC V []byte reseedCounter uint64 } const ( reseedInterval = 1 << 48 maxRequestSize = (1 << 19) / 8 ) // plainPersonalization is used by HMAC_DRBG as-is. type plainPersonalization []byte func (plainPersonalization) isPersonalizationStr() {} // Each entry in blockAlignedPersonal is written to the HMAC at a // block boundary, as specified in draft-irtf-cfrg-det-sigs-with-noise-04, // Section...