# encryption-algorithm

## Syntax

**encryption-algorithm** **aes-cbc** [ *key-length* ]

**undo** **encryption-algorithm**

## View

IKE proposal view

## Default level

2: System level

## Parameters

**a****es-cbc**: Uses the AES algorithm in CBC mode as the encryption algorithm. The AES algorithm uses 128-bit, 192-bit, or 256-bit keys for encryption.

*key-length*: Key length for the AES algorithm, which can be 128, 192 or 256 bits and is defaulted to 128 bits.

## Description

Use the **encryption-algorithm** command to specify an encryption algorithm for an IKE proposal.

Use the **undo** **encryption-algorithm** command to restore the default.

The default encryption algorithm for an IKE proposal is AES-128.

Related commands: **ike** **proposal** and **display** **ike** **proposal**.

## Examples

# Use 128-bit AES in CBC mode as the encryption algorithm for IKE proposal 10.

<Sysname> system-view [Sysname] ike proposal 10 [Sysname-ike-proposal-10] encryption-algorithm aes-cbc 128