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.