Communicate safely with

Dynamic encryption

Dencrypt Communication Solution

Secure Communication on Your Smartphone

Dencrypt Talk

Easy-to-use smartphone app that keeps your conversations private with end-to-end encryption.

Dencrypt Message

Send and receive messages with your smartphone and communicate safely with co-workers, partners and customers.

Dencrypt Server System

The server platform that enables secure mobile communication with Dencrypt Talk and Dencrypt Message. Use our cloud service or get your own enterprise installation.

Dencrypt Core

Integrate Dynamic Encryption into your hardware or software application and get the most superior protection of your data.

Custom Crypto

Let Dencrypt develop a unique and proprietary crypto system specifically for you.

Validated Solutions

Dencrypt products are certified and accredited for classified communication. Used by NATO and the Danish Defence.

Dencrypt Talk

Dencrypt Talk protects your smartphone conversations with state-of-the-art Dynamic Encryption on non-secure digital infrastructure such as WiFi hotspots, mobile networks and satellite links. Dencrypt Talk is a Common Criteria certified, user-friendly smartphone application delivered from App Store, Google Play or a Mobile Device Management system (MDM).

Features

Dynamic Encryption + AES-256

End-to-end encryption

Perfect Forward Secrecy

Encrypted voice calls over IP

High audio quality

Group calls

Connectivity on all cellular and wireless networks

Secure provisioning

Mutual authenticated connection.

Secure phonebook

       ◦ Centrally managed

       ◦ Individual call groups

Common Criteria certified (EAL4+)

iOS and Android platforms

Dencrypt Talk Tech Specs

Voice and Data Encryption

Secure end-to-end-encrypted voice communication using Dynamic Encryption ensuring that each call session is encrypted with a randomly chosen algorithm and randomly chosen keys.

» Patent pending: PCT/EP2012/071314
» AES-256 + 128-bit seed for dynamic encryption algorithm selection
» Voice: Counter mode (CM) operation
» 3K Diffie-Hellman (DH-RSA 3072) for key exchange over the zRTP protocol
» SAS: Four letter readout based on key authentication
» Perfect Forward Secrecy: Encryption key and dynamic algorithm seed established at call setup and removed at call termination
» Key material is generated with cryptographically secure random number generator using the Yarrow algorithm

Mutually Authenticated Connections

The Dencrypt Talk app registers in the Dencrypt Server System for activation, call setup and phonebook download, using mutually authenticated connections.

» TLS1.2 Cipher Suite: TLS_EDCH_RSA_WITH_AES_256_GCM_SHA384
» Elliptic curve: secp384r1
» X509 Certificates: RSA 3072 bits. SHA512

Audio

» Constant bit-rate for enhanced security
» Polyphonic ringtones

Platforms

» iOS 10.0 and later
» Android 7.1 or later

Common Criteria Certification and Accreditation

Dencrypt Talk (iOS) is Common Criteria certified (EAL4+) and accredited for classified information up to RESTRICTED. Security target is available on request.

Dencrypt Message

Dencrypt Message protects your smartphone instant messaging with state-of-the-art Dynamic Encryption of non-secure digital infrastructure such as WiFi hotspots, mobile networks and satellite links. Dencrypt Message is a user-friendly smartphone application supporting text messaging and content sharing. Available from App Store, Google Play and Mobile Device Management systems (MDM).

Features

Dynamic Encryption + AES-256

End-to-end encryption

Encrypted text messaging

Encrypted content sharing

       ◦ Photos from album or camera

       ◦ Voice clips from file or captured by phone

       ◦ GPS location

Group messaging

Secure phone book

       ◦ Centrally managed

       ◦ Individual call groups

Secure provisioning

Connectivity on all cellular and wireless networks

Mutually authenticated connections

iOS and Android platforms

Dencrypt Message Tech Specs

Data Encryption

Secure end-to-end encrypted instant messaging and content sharing. Dynamic Encryption is applied to encrypt each message with a randomly chosen algorithm and randomly chosen keys.

» Patent pending: PCT/EP2012/071314
» AES-256 + 128-bit seed for dynamic encryption algorithm selection
» Cyclic Block Chain (CBC) operation. PKCS7 padding
» 3k PKI-based key exchange
» Key material is generated with cryptographically secure random number generator using the Yarrow algorithm

Connectivity

Instant messaging over cellular, wireless and satellite networks, including 2G/3G/4G/5G/WiFi

Mutually Authenticated Connections

The Dencrypt Talk app registers in the Dencrypt Server System for activation, call setup and phonebook download, using mutually authenticated connections.

» TLS1.2 Cipher Suite: TLS_EDCH_RSA_WITH_AES_256_GCM_SHA384
» Elliptic curve: secp384r1
» X509 Certificates: RSA 3072 bits. SHA512

Content Sharing

» Images stored on device or captured directly by the camera
» Sound clips stored on device or captured directly from microphone
» GPS location and map thumbnail

Platforms

» iOS 10.0 and later
» Android 7.1 or later

Dencrypt Server System

The Dencrypt Server System provides the infrastructure that enables secure mobile communication using the Dencrypt Talk and Dencrypt Message smartphone applications. Dencrypt Server System is Common Criteria certified and is available as an enterprise solution for organisations requiring full control of all parts of their communication solution or as a cloud service.

Features

Secure voice call set-up

Secure message routing

Secure activation of end-users

Audit and event logs

Trusted connections using TLS1.2

Mutual authentication

Common Criteria-certified (ISO 15408) at EAL2+

 

Dencrypt Control Center — web-based management tool

       ◦ Role-based administration

       ◦ User management

       ◦ Call group and phonebook management

       ◦ User revocation

       ◦ Certificate management

       ◦ Call statistics

       ◦ System status dashboard

Dencrypt Server System Tech Specs

Cloud or Enterprise Solution

In an Enterprise solution, the Dencrypt Server System is deployed on virtual machines and managed within the IT environment of your organisation for full control of operations and user management.

Deployed by Dencrypt personnel and delivered as a turn-key solution ready for use, the Dencrypt Server System is also offered as a cloud service hosted by Dencrypt for fast rollout and a minimum of overhead costs.

End-to-End Encryption

The Dencrypt Server System only facilitates the secure voice call set-up and message routing. It does not decrypt voice calls or message content.

Dencrypt Control Center

The Dencrypt Control Center is an easy-to-use web-based management tool for user administration, system monitoring and call statistics. It can be operated without special skills and with a minimum of training.

Common Criteria and Accreditation

The Dencrypt Server System is Common Criteria-certified (EAL2+) and accredited for classified information up to RESTRICTED. Security target is available on request.

Connections:
» TLS1.2: TLS_EDCHE_RSA_WITH_AES_256_GCM_SHA384
» Elliptic curves: secp384r1

RSA key generation and signing:
» RSA4096 bits
» RSA3072 bits (temporary key for activation)

X509 certificates:
» RSA4096 bits
» SHA512

Random number generation:
» OpenSSL RNG from Debian Linux
» SHA512

Dencrypt Core

Dencrypt Core is a customer-specific package of the crypto components required to integrate Dynamic Encryption into existing or planned products. Dynamic Encryption is applied anywhere that strong end-to-end encryption is required.

Dencrypt Core is delivered to both HW and SW platforms with full support for integration, test and release. Dencrypt Core applies to a broad range of applications, such as satellite and mobile communications, backbone networks, IoT devices, sensors and vehicles.

Dynamic Encryption

Based on the customer’s product specifications, Dencrypt designs a customised Dencrypt Core, applying the principle of Dynamic Encryption for maximum protection.

HW/SW Platforms

Dencrypt Core is available for both hardware and software platforms. The delivery of Dencrypt Core is a joint integration project, with Dencrypt engineers delivering the customised implementation as well as support and tools for integration, test and release.

Customised for Optimal Performance

Dencrypt tailors the solution for the specific application and ensures optimal performance for security, speed, latency and with the preferred API. Dencrypt provides support for the entire product lifecycle.

Custom Crypto

Proprietary algorithms may be deployed internally by organisations with special requirements or by nations that need national encryption schemes.

Dencrypt can develop proprietary versions of Dynamic Encryption as well as stand-alone algorithms for these purposes.

Customer Reference: Danish Defence

The Danish Defence and the Danish Ministry of Defence started testing Dencrypt Talk and Dencrypt Server System for internal secure communication in January 2015.

Today, the system has received accreditation for Danish RESTRICTED use and is used widely within the Danish Defence.

Secure mobile communication, integrated into the existing IT security policies, is of increasing importance for the Danish Armed Forces. When it comes to IT security, it is of special importance that the best available solutions are being used and are a natural part of daily work. To keep productivity high such solutions must be easy to use. Dencrypt has managed to combine advanced encryption technology with a user-friendly solution, which means that employees can easily make secure mobile calls.

Major Jesper Roelsgaard, Defence Command Denmark

Customer Reference: NATO

In April 2017 Dencrypt was awarded the NATO Communication and Information (NCI) Agency’s Defence Innovation Challenge for SMEs and academia.

Dencrypt Talk and Dencrypt Server System were accredited for NATO RESTRICTED level in 2018 and adopted for use in NATO.

Secure Your Communication

Contact us for information on how your communication can be secured.

Dencrypt

Company Profile

Dencrypt A/S specialises in developing and providing secure communication solutions based on the principle of Dynamic Encryption. Dencrypt was established to enable everyone to communicate in confidence. We combine advanced encryption technology with user-friendly operation.

Dynamic Encryption was invented by Lars Ramkilde Knudsen, professor in cryptology at the Technical University of Denmark.

Dencrypt is a Danish company with offices in Copenhagen and Aalborg.

Our Mission
Fact Sheet
Technical Objectives
Key Technologies
Key Accomplishments

Dencrypt’s solutions let you communicate securely with trust and confidence.

Company name: Dencrypt A/S
Established: December 2013
Company Reg. No.: DK-25698908
Company Type: Privately held
Address: Arnold Nielsens Blvd. 72, DK-2650 Hvidovre
Phone: (+45) 72 11 79 11
Email: info@dencrypt.dk
Branch office: Dencrypt Aalborg, Niels Jernes Vej 10, DK-9220 Aalborg

» Secure communication combined with user-friendly operation to ensure efficient use in daily operations
» Works on employee’s smartphone with no need for additional hardware
» Dynamic Encryption extends the lifetime for standard encryption systems
» Scalable solution delivered as a cloud service or as an in-house deployment
» Common Criteria certified solutions ensure that products are developed securely with no vulnerabilities

» Dynamic Encryption combined with AES-256 or a proprietary inner algorithm
» End-to-end encrypted voice calls and messaging on mobile devices
» Forward secrecy: Diffie-Hellman key exchange
» Server infrastructure deployed in-house or hosted
» Support for iOS and Android-based devices

» Common Criteria certification of Dencrypt Talk (iOS) and Dencrypt Server System
» NATO and the Danish Defence as reference customers
» Accreditation for classified information by NATO and the Danish Defence
» Vincent Rijmen, co-inventor of AES, endorses Dynamic Encryption as ‘state-of-the-art in cryptology’

Read our Privacy Policy to learn about how we handle and protect your data.

Career at Dencrypt

Dencrypt always looks for talented and passionate employees.

You are welcome to submit an unsolicited application to career@dencrypt.dk

 

There are currently no open positions.

Management

Hans Hasselby-Andersen

CEO

Søren Sennels

COO

Lars Ramkilde Knudsen

Chief Cryptologist

Jens Callsen

CTO

Jørgen Andersen

Sales Director

Board of Directors

Kaj Juul-Pedersen

Chairman

Thor Jespersen

Vice Chairman

Jørgen Abild Andersen

Board Member

Jan Dinesen

Board Member

Lars Ramkilde Knudsen

Board Member

Claus Jørgen Nielsen

Board Observer

Contact

Dencrypt A/S

Arnold Nielsens Boulevard 72

DK-2650 Hvidovre

Denmark


CVR/VAT: DK-25698908

 

Map

Copenhagen office

Map

Aalborg office

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