Reliable encryption protects the data to be transferred from:
The Advanced Encryption Standard is a symmetrical encryption system that was determined in 2000 by the National Institute of Standards and Technology (NIST) as the successor to the Data Encryption Standard (DES). The AES standard, named after its developers Joan Daemen and Vincent Rijmen, is also known as the Rijndael-Algorithm.
The algorithm uses the block size (128 bits) and a key length of 256 bits. In this process, the binary plain text is linked with keys in several steps and changed repeatedly. The standard is resistant to linear as well as differential encryption analyzes and thus offers complete protection of the data to be transmitted.
Encryption on layer 1 of the OSI model enables secure transmission regardless of the protocols and applications to be transmitted. Here, voice, data and video as well as Ethernet, Fibre Channel, SDI, CPRI protocols can be securely encrypted. The encryption on layer 1 means that there is no overhead data and the encryption can be carried out at line speed with 100% data throughput. The available solutions encrypt data connections from 1 Gbps to 200 Gbps full duplex.
Significant advantages in data throughput when layer 2 encryption is used compared to layer 3.
Encryption on layer 2 of the OSI model enables the secure transmission of unicast, multicast and broadcast data. Layer 2 encryption works transparently to VLAN, CoP and MPLS connections and is completely decoupled from all applications on higher layers. With its low overhead, Layer 2 encryption offers significant speed advantages compared to Layer 3-based encryption.
Encryption on layer 3 of the OSI model enables the secure transmission of IP-packets via a public transport network. Usually the encryption realized software-based in the router or in the end device. Due to the software implementation, encryption on Layer 3 has the greatest latency and has significant restrictions in data throughput. Many system manufacturers of e.g. routers offer in their system technology an option for encryption on layer 3 without high additional costs.
WDM (Wavelength Division Multiplexing) is a fiber saving purely optical multiplex technology. It works in a similar way to color filters that only allow precisely defined wavelengths of light (color spectrum) to pass through. The signals are transmitted on several independent wavelengths (light) via a fiber cable.