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The Encrypt Message policy helps in encrypting messages before sending them to the target endpoint or an API consumer. Encryption is done based on a key (user-defined) and an algorithm.

Configuration

The properties that have to be configured to use the policy are described below.


Figure 1: Encrypt Message Policy Configuration 

PropertyDescription
Encryption AlgorithmSelect the algorithm to be used for encryption. The supported algorithms are DES, Base64Encoding, TripleDES, AES256, AES192, AES128, RC2-40, RC2-64, and RC2-128.
Encryption KeySpecify the key which has to be used to encrypt the incoming data. Specify 32 digit key for AES256, 24 digit key for AES192, 16 digit key for AES128, 8 digit key for DES, 24 digit key for TripleDES, 5 digit key for RC2_40, 8 digit key for RC2_64 and 16 digit key for RC2_128.
Allow Padding to keyEnable this property to allow padding to the key to make the exact value to be required for the specified algorithm.
Initialization VectorRequired to be 16 and 8 bytes long for AES 128/192/256 and TripleDES algorithms respectively.

Example

This example illustrates the encryption of Target Response message.

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Decryption of Proxy Response message is explained in the Decrypt Message section.

When Encrypt Message policy is not configured, the response for the request: http://192.168.2.39:1860/cc2/1.0/conversionrate?FromCurrency=INR&ToCurrency=USD

 will be

{"Envelope": {"Body": {"ConversionRateResponse": {"ConversionRateResult": "0.0157"}}}}

Create an Encrypt Message policy with the default configuration and add it to Target Response scope.

The response after this configuration is displayed below:

MZqQFfmEtEDE1kAHbej5ITDVwlHqw5Ip2A6my9bie3U6Im2QSvBGeVuZbiqIwjmuZx11pkNOTxldDN+PlGKfvQRADfMv4NXSV8kNYV1tmempKucyG2Gg4HYE4PdWmmiH
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Refer to the example in the Decrypt Message section for decryption of the Proxy Response message

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