Integrity

Integrity means that the information sent over the Internet arrives as accurate as it was when the information was sent. Without integrity checks, the user could never be sure that the information the financial institution received is accurate, or that the information the user sends to the financial institution is correct. SumxNet™ uses encryption and digital signatures to ensure integrity.

A digital signature is a numeric value that is computed as the information is encrypted. This value is encrypted as part of the unreadable form of the information. The information is then transmitted over the Internet. When the unreadable form is decrypted, the digital signature computation is repeated and the computed digital signature is compared to the digital signature sent within the message. If the digital signatures match, then the information has maintained integrity. If the digital signatures do not match, then the information is suspect and is discarded.