The Tamper tab is used to reset the tamper detection key used to protect database records. Any value typed here will be encrypted and then stored in the registry. (Do not copy the "HashKey" value from the registry into this field; instead copy "HashKey" registry values from one registry to another.) The derived tamper key is used to maintain a cryptographic "hash chain" of database records. For security reasons, the current tamper detection key is not shown; you can use this tab only to set a new tamper detection key. Because the tamper detection key is set during installation and should not be changed once set, there is rarely a need to use this tab.