Abstract: A system and method for encryption key generation by receiving a plaintext message having a fixed character length and receiving, from a source, a plurality of random number. A matrix is created from the plurality random numbers and has at least one of the number of rows or columns equal to or greater than the character length. An array that can be used as an encryption key or a seed for an encryption key is generated by selecting an initial element within the matrix, selecting subsequent elements using a selection technique until a number of elements in the array is equal to the character length and rejecting any previously selected elements from the array.

Abstract: A system and method for encryption key generation by receiving a plaintext message having a fixed character length and receiving, from a source, a plurality of random number. A matrix is created from the plurality random numbers and has at least one of the number of rows or columns equal to or greater than the character length. An array that can be used as an encryption key or a seed for an encryption key is generated by selecting an initial element within the matrix, selecting subsequent elements using a selection technique until a number of elements in the array is equal to the character length and rejecting any previously selected elements from the array.

Abstract: An apparatus for educational and/or recreational learning provides a means for stimulus or query to test skill and knowledge, generate a response to the stimulus or query, and rewards correct responses to reinforce learning. The educational and/or recreational apparatus has at least one housing containing at least one compartment. The housing has a modular exterior surface appropriate for joining with other housings. Each compartment in each housing is associated with a first opening on a surface of the housing. At the first opening of each compartment is a removable cover. Each removable cover at each compartment is placed at each first opening to selectively expose and conceal an interior of each compartment. The educational and/or recreational apparatus further has at least one display device such as a shelf or a transparent pocket to display member or information card.

Abstract: An apparatus for educational and/or recreational learning provides a means for stimulus or query to test skill and knowledge, generate a response to the stimulus or query, and rewards correct responses to reinforce learning. The educational and/or recreational apparatus has at least one housing containing at least one compartment. The housing has a modular exterior surface appropriate for joining with other housings. Each compartment in each housing is associated with a first opening on a surface of the housing. At the first opening of each compartment is a removable cover. Each removable cover at each compartment is placed at each first opening to selectively expose and conceal an interior of each compartment. The educational and/or recreational apparatus further has at least one display device such as a shelf or a transparent pocket to display member or information card.