Secured cloud data storage, distribution and restoration among multiple devices of a user

A secured server for sharing content stored on a database, said content being associated to a first electronic device and encrypted using a public key of said first electronic device, the secured server storing a first re-encryption key from the first electronic device to a second electronic device, the secured server being configured to:

• determine association of a content with an electronic device;
• re-encrypt a content using a re-encryption key;
• send a content to an electronic device for encryption using a public key;
• and
• store an encrypted content received from an electronic device in association with said electronic device.

A a storage medium comprising a computer program product stored thereon and executable by a processor in the form of a software agent including at least one software module setup to implement a method to share a content stored on a secured server, said content being associated to a first electronic device and encrypted using a public key of said first electronic device, the secured server storing a first re-encryption key from the first electronic device to a second electronic device, the method being implemented by the secured server and comprising steps of:

• a) determining with the processor association of the content with the second electronic device,
• b) re-encrypting the content using the first re-encryption key,
• c) sending the content from the secured server to the second electronic device for encryption using a second device public key, and
• d) storing the encrypted content received from the second electronic device in association with said second electronic device.