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).

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

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

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

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.