Partial encryption does not necessarily increase the level of security in that for images that are well-known, say the Mona Lisa, unencrypted copies may be used to compare with the partially encrypted image to reveal the encryption key. See Aliroo for their representative partial encryption technology, Scarlet. Giovanni digital watermarks make slight alterations to the data, but preserves its usefulness. For instance, you can play a digital audio compact disc that contains music watermarked with Giovanni just as you would play an unwatermarked disc, with the same equipment. Encrypting the same content would render the media incomprehensible and thus it would not be possible to sample or test clips of content before making a purchase decision.
Encryption can protect data while it is in transit, from one party to another.
Encryption is designed for transmission security. However, it does nothing once the data reaches its destination. The receiving party must be free to decrypt the data, and the publisher has no control over what is then done with it. See the RSA Data Security site for comprehensive information on encryption technologies. An important issue with encryption which relates directly to Giovanni is the well-known and tested standards for provable security , on which our keys are based.