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.

» Patented Dynamic Encryption
» 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 Talk Product Sheet