| 摘要 |
Disclosed are encryption method and system for sharing data. The disclosed encryption method comprises the steps of: receiving a first cryptogram, encrypted according to a first condition value, from a user terminal; receiving a condition value change key, generated using the first condition value and a second condition value, from the user terminal; and updating the first cryptogram and generating a second cryptogram, into which the second condition value is incorporated, by using the condition value change key. |
