IPWorks Encrypt 2020 Android Edition

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AddHeaderParam Method

Adds additional header parameters.

Syntax

public void addHeaderParam(String name, String value, int dataType);

Remarks

This method is used to add additional header parameters before calling Encrypt.

The Name and Value parameters define the name and value of the parameter respectively. The DataType parameter specifies the JSON data type of the value. Possible values for DataType are:

  • 0 (Object)
  • 1 (Array)
  • 2 (String)
  • 3 (Number)
  • 4 (Bool)
  • 5 (Null)
To add additional parameters to the JOSE header use this method. For instance to create this header:


{
	"alg": "A256GCMKW",
	"crit": [
		"exp"
	],
	"enc": "A128CBC-HS256",
	"exp": 12345687,
	"iv": "SFZ9o0KKN8qF8yod",
	"tag": "tREHGKuViLo7s3QpRTulkg",
	"type": "JWT"
}

The following code can be used:


Jwe jwe = new Jwe();
jwe.EncryptionAlgorithm = JweEncryptionAlgorithms.eaA256GCMKW;
jwe.KeyB = key;
jwe.AddHeaderParam("type", "JWT", 2);
jwe.AddHeaderParam("crit", "[\"exp\"]", 1);
jwe.AddHeaderParam("exp", "12345687", 3);
jwe.InputMessage = "test";
jwe.Encrypt();
string encryptedData = jwe.OutputMessage;

Note: When calling Encrypt the component will automatically add headers based on the selected EncryptionAlgorithm and other properties that may be set.

Parameters Automatically Set:

Header ParamProperty
alg EncryptionAlgorithm
enc ContentEncryptionAlgorithm
kid KeyId
zip CompressionAlgorithm
p2c PBES2Count (PBES Algorithms Only)
apu PartyUInfo (ECDH Algorithms Only)
apv PartyVInfo (ECDH Algorithms Only)
iv N/A - Automatically Generated (AES Algorithms Only)
tag N/A - Automatically Generated (AES Algorithms Only)
p2s N/A - Automatically Generated (PBES Algorithms Only)
epk N/A - Automatically Generated (ECDH Algorithms Only)

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IPWorks Encrypt 2020 Android Edition - Version 20.0 [Build 8161]