> ## Documentation Index
> Fetch the complete documentation index at: https://notevil.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# CAPLfunctionSecurityLocalEncryptAES128ECB

# SecurityLocalEncryptAES128ECB

[Valid for](../../../Shared/FeatureAvailability.md):  CANoe DE • CANoe4SW DE

**Note**\
Replaces `LocalSecurityEncryptAES128ECB`.

## Function Syntax

```
long SecurityLocalEncryptAES128ECB(byte key[], dword keyLength, byte data[], dword dataLength, byte cipheredData[], dword cipheredDataLength)
```

## Description

Encrypts data with a given key using AES128 (ECB), Padding Mode PKCS5.

## Parameters

* **byte key\[]**\
  The key to be used for AES (128 bit).

* **dword keyLength**\
  16 (bytes).

* **byte data\[]**\
  The data to encrypt.

* **dword dataLength**\
  The length of the data to encrypt.

* **byte cipheredData \[] \[Out]**\
  The buffer in which the ciphered data is stored.

* **dword cipheredData Length \[In/Out]**\
  The length of the buffer. Typically this buffer has to be 16 bytes longer than the length of the data to encrypt.

## Return Values

* **1**\
  Success\
  A Value of 1 means that the action was successful.

* **\<= 0**\
  Error\
  A value less than or equal to 0 means error.

## Example

```c theme={null}
void Encrypt1(byte E1[])
{
  byte BaseKey[16] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  byte Data[16] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF,0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
  byte Result[32];
  dword length = elCount(Result);
  int i;
  dword res;

  res = SecurityLocalEncryptAES128ECB(BaseKey, elCount(BaseKey), Data, elCount(Data), Result, length);

  write("SecurityLocalEncryptAES128ECB Result: %d", res);
  for(i = 0; i < length; i++) write("Result Byte %d : %x", i, Result[i]);
}
```