How does RPost prove if a Registered Receipt e-mail has or has not been tampered with?
RPost Registered Receipt™ e-mail are electronically sealed and tamper detectable documents and use sophisticated encryption techniques. When the Registered Receipt e-mail is forwarded to the RPost Registration System, the RPost Digital Seal™ marks are compared to the ones that are instantly regenerated for verification. RPost receipts incorporate two forms of encryption algorithms, the SHA-1 hash and Triple DES algorithm. RPost uses encryption components which are based on open cryptographic standards – the algorithms defined by these standards are the most widely used in the world today, and are counted among the strongest available in the commercial sector. They are tested for compliance with these standards by independent laboratories, and validated by the United States Government. In short, if the two sets of originally recorded digital fingerprints do not line up during the verification process, the system knows that something has been altered, but not the specific word, punctuati
