Creating Distributed Key Policies

Figure 69 Data payload encryption

Encryption and Authentication Algorithms

For Layer 3 IP policies, you can specify the encryption and authentication algorithms that you want to use. The encryption algorithms include the Advanced Encryption Standard (AES) and Triple Data Encryption Standard (3DES).

AES is a symmetric block cipher capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits. Triple DES, or 3DES, is a more secure variant of DES. 3DES uses a key length of 168 bits. The Data Encryption Standard (DES) is a symmetric block cipher with a block size of 64 bits and a key length of 56 bits.

The authentication algorithms available include Secure Hash Algorithm 1 (HMAC-SHA-1) and Message Digest #5 (HMAC-MD5). Both are hash algorithms. HMAC-SHA-1 is more secure than HMAC-MD5.

Layer 2 Ethernet encryption policies utilize AES with 256-bit keys to encrypt and decrypt the data and HMAC-SHA-1 to provide data origin authentication and data integrity.

Layer 4 IP encryption policies use AES-256 for encryption and HMAC-SHA-1 for authentication. The ETEP PEPs do not support 3DES or HMAC-MD5 at Layer 4.

ARIA Encryption

In addition to the standard encryption algorithms listed above, the ARIA encryption algorithm is available on ETEP PEPs. ARIA provides 256-bit encryption, and is implemented in software.

Note the following usage guidelines and constraints:

●ARIA-256 is available for use in Layer 3 and Layer 4 policies. Layer 2 Ethernet encryption policies do not support ARIA.

●ARIA-256 is incompatible with the ETEP’s FIPS mode of operation. Disable FIPS mode on the ETEP prior to using ARIA in encryption policies.

●ARIA-256 is available only when using the local ETKMS software External ETKMSs do not support policies that use ARIA encryption.

To use ARIA in an encryption policy, do the following:

1Quit EncrypTight if it is running (File > Exit).

2Edit the EncrypTight config.ini file. The file is located in the <installDir>\configuration directory, where <installDir> is the directory in which EncrypTight is installed.

a Using a text editor such as Notepad, open the config.ini file.

bChange the AriaSupport setting from false to true. The modified line should look like this:

AriaSupport=true

cSave the file, and then close the text editor.

3Restart EncrypTight.

4In ETPM, select ARIA as the encryption algorithm in the policy editor. This algorithm is available in any Layer 3 or Layer 4 policy type: mesh, point-to-point, multicast, or hub and spoke. After defining the encryption policy, deploy the policy to the ETEPs.

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Black Box ET0100A, ET1000A, ET0010A, EncrypTight manual Encryption and Authentication Algorithms, Aria Encryption
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EncrypTight, ET0100A, ET0010A, ET1000A specifications

The Black Box ET1000A, ET0010A, EncrypTight, and ET0100A are advanced solutions designed for secure data transmission and network management, catering to modern enterprise needs. These tools integrate cutting-edge technologies to enhance connectivity, security, and efficiency within various environments.

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