Free open source on-the-fly encryption software
 U.S. Committee on National Security Systems (CNSS), National Policy on the Use of the Advanced Encryption Standard (AES) to Protect National Security Systems and National Security Information, CNSS Policy No. 15, Fact Sheet No. 1, June 2003, available at http://csrc.nist.gov/groups/STM/cmvp/documents/CNSS15FS.pdf.
 C. E. Shannon, Communication Theory of Secrecy Systems, Bell System Technical Journal, v. 28, n. 4, 1949
 NIST, Advanced Encryption Standard (AES), Federal Information Processing Standards Publication 197, November 26, 2001, available at http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf.
 J. Nechvatal, E. Barker, L. Bassham, W. Burr, M. Dworkin, J. Foti, E. Roback, NIST, Report on the Development of the Advanced Encryption Standard (AES), October 2, 2000, Journal of Research of the National Institute of Standards and Technology, Vol. 106, No. 3, May-June 2001, available at http://nvl.nist.gov/pub/nistpubs/jres/106/3/j63nec.pdf.
 B. Schneier, J. Kelsey, D. Whiting, D. Wagner, C. Hall, N. Ferguson, T. Kohno, M. Stay, The Twofish Team’s Final Comments on AES Selection, May 15, 2000, available at http://csrc.nist.gov/archive/aes/round2/comments/20000515-bschneier.pdf.
 Bruce Schneier, Beyond Fear: Thinking Sensibly About Security in an Uncertain World, Springer, 2003
 RSA Laboratories, PKCS #5 v2.0: Password-Based Cryptography Standard, RSA Data Security, Inc. Public-Key Cryptography Standards (PKCS), March 25, 1999, available at ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-5v2/pkcs5v2-0.pdf.
 H. Krawczyk, M. Bellare, R. Canetti, HMAC: Keyed-Hashing for Message Authentication, RFC 2104, February 1997, available at http://www.ietf.org/rfc/rfc2104.txt.
 M. Nystrom, RSA Security, Identifiers and Test Vectors for HMAC-SHA-224, HMAC-SHA-256, HMAC-SHA-384, and HMAC-SHA-512, RFC 4231, December 2005, available at http://www.ietf.org/rfc/rfc4231.txt.
 Peter Gutmann, Software Generation of Practically Strong Random Numbers, presented at the 1998 Usenix Security Symposium, available at http://www.cs.auckland.ac.nz/~pgut001/pubs/usenix98.pdf.
 Carl Ellison, Cryptographic Random Numbers, originally an appendix to the P1363 standard, available athttp://world.std.com/~cme/P1363/ranno.html.
 P. Rogaway, Efficient Instantiations of Tweakable Blockciphers and Refinements to Modes OCB and PMAC, Asiacrypt 2004. LNCS vol. 3329. Springer, 2004. Also available at: http://www.cs.ucdavis.edu/~rogaway/papers/offsets.pdf.
 J. Kelsey, Twofish Technical Report #7: Key Separation in Twofish, AES Round 2 public comment, April 7, 2000
 NIST, Secure Hash Standard, FIPS 180-2, August 1, 2002, available at http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf.
 U. Maurer, J. Massey, Cascade Ciphers: The Importance of Being First, Journal of Cryptology, v. 6, n. 1, 1993
 Bruce Schneier, Applied Cryptography, Second Edition, John Wiley & Sons, 1996  Peter Gutmann, Secure Deletion of Data from Magnetic and Solid-State Memory, first published in the Sixth USENIX Security Symposium Proceedings, San Jose, California, July 22-25, 1996, available at http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html
 Serpent home page: http://www.cl.cam.ac.uk/~rja14/serpent.html.
 M. E. Smid, AES Issues, AES Round 2 Comments, May 22, 2000, available athttp://csrc.nist.gov/archive/aes/round2/comments/20000523-msmid-2.pdf.
 A. Menezes, P. van Oorschot, S. Vanstone, Handbook of Applied Cryptography, CRC Press, October 1996
 International Organization for Standardization (ISO), Information technology – Security techniques – Hash-functions – Part 3: Dedicated hash-functions, ISO/IEC 10118-3:2004, February 24, 2004
 NIST, The Keyed-Hash Message Authentication Code (HMAC), Federal Information Processing Standards Publication 198, March 6, 2002, available at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf.
 RSA Laboratories, PKCS #11 v2.20: Cryptographic Token Interface Standard, RSA Security, Inc. Public-Key Cryptography Standards (PKCS), June 28, 2004, available at ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-11/v2-20/pkcs-11v2-20.pdf.
 Morris Dworkin, Recommendation for Block Cipher Modes of Operation: The XTS-AES Mode for Confidentiality on Storage Devices, NIST Special Publication 800-3E, January 2010, available at http://csrc.nist.gov/publications/nistpubs/800-38E/nist-sp-800-38E.pdf.