PRESS RELEASE

London, UK – May 23rd, 2013: Cellcrypt (www.cellcrypt.com), a leading provider of encrypted voice calling and messaging for smartphones and tablets, today announced that CESG and Cellcrypt are jointly developing a MIKEY-SAKKE technology solution for securing mobile communications.

Multimedia Internet KEYing-Sakai-Kasahara Key Encryption (MIKEY-SAKKE) is a method of key exchange which, together with SIP and SRTP, provides a full set of standards in the public domain that can provide encryption, message authentication, integrity and replay protection for unicast and multicast applications, such as secure voice and messaging.

MIKEY-SAKKE uses Identity-based Public Key Cryptography (IDPKC) to provide and distribute cryptographic trust without needing digital certificates or the expense and complexity of supporting a Public Key Infrastructure.

CESG and Cellcrypt have entered into an agreement where Cellcrypt will develop a MIKEY-SAKKE technology demonstrator to allow a smartphone to call a landline phone (and vice versa) using the MIKEY-SAKKE key exchange mechanism, which is expected to be ready for demonstration in May 2013.

A standard-based solution based on MIKEY-SAKKE offers the promise of highly scalable, secure calling and real-time messaging for private networks, such as UK Government.

"Security solution providers need to stay nimble to address the evolving protection requirements of threat-aware customers," said David Rivington, Cellcrypt CEO. "With this latest product development, Cellcrypt is adding a cutting-edge solution to its broad product offering and meeting the market need head-on."

Cellcrypt is committed to supporting MIKEY-SAKKE, the UK Government's next generation secure voice standard. Products supporting a full MIKEY-SAKKE solution are planned for later this year.

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About CESG

CESG are the UK Government's National Technical Authority for Information Assurance and protects the vital interests of the UK by providing policy and assistance on the security of communications and electronic data, working in partnership with industry and academia.

For more information, please visit: www.cesg.gov.uk

About Cellcrypt

Cellcrypt is a leading provider of encrypted voice calling and messaging on commercial off-the-shelf smartphones including Android&trade, BlackBerry®, iPhone® and Nokia®. It enables secure, interoperable calling and messaging between a broad selection of popular mobile devices (smart phones and tablets) and interfaces to office phone systems (PBXs) that connect to landlines as well as securely accesses standard PBX features such as voicemail, conference calling and calling out to the public phone network.

Various Cellcrypt technology components have information assurance validations including the FIPS 140-2 standard approved by the U.S. National Institute of Standards & Technology (NIST) and the Cellcrypt Mobile Baseline&trade product has been CAPS approved up to IL3/RESTRICTED by CESG, the UK Government's National Technical Authority for Information Assurance.

Today, Cellcrypt solutions are used routinely by governments, global enterprises and their senior-level executives worldwide. Cellcrypt is a privately held, company with offices in the United States, the United Kingdom and the UAE.

Please visit www.cellcrypt.com for more information. All trademarks are the property of their respective owners.