Abstract: An embodiment of an automatic key delivery system is described, An automatic key delivery system comprises the following operations. Herein, a first token is generated and provided to a first network device. Thereafter, a first key value pair, including the first token and a first key segment of a cryptographic key, is received by a first relay server and a second key value pair, including the first token and a second key segment of the cryptographic key, is received from a second relay server. In response, a second token to be provided to the first relay server and the second relay server. Thereafter, the first and second key segment are returned from the first and second relay servers based on usage of the second token as a lookup in order to recover the cryptographic key for decryption of an encrypted content from the first network device.

Abstract: A computerized method that encrypts each of a plurality of segments of a binary value using a selected block cipher of a plurality of block ciphers and a unique symmetric key of a first plurality of unique, symmetric keys to produce a first ciphertext. The method further encrypts each of a plurality of segments of the first ciphertext using a selected block cipher of the plurality of block ciphers and a unique symmetric key of a second plurality of unique, symmetric keys to produce a second ciphertext. The selected block cipher used to encrypt a first segment of the binary value to produce a first segment of the plurality of segments of the first ciphertext is different than the selected block cipher used to encrypt the first segment of the ciphertext to produce a first encrypted segment of the second ciphertext.

Abstract: A system and method for generating a cryptographic key using a sequence of data segments selected by a user from one or more data resources. Raw data from the one or more data resources corresponding to each of the selected data segments, and the sequence in which such data segments are selected, is extracted and processed to generate a key. The key can be used for any cryptographic and authentication purpose. By enabling a user to select the sequence of data segments from the one or more data resources in any manner the user desires, the user can create a strong key, but also easily remember the underlying data resource and chosen sequence. This technique provides enhanced security while maintaining ease of creation and use of such security.