HMac

Description

Creates Hash-based Message Authentication Code for the given string based on the algorithm and encoding. Hash-based Message Authentication Code (HMAC) is used to verify the data integrity and authenticity of a message transmitted. It involves a cryptographic hash function in combination with a secret key. The cryptographic hash function can be Message Digest 5 (MD5), Secure Hash Algorithm (SHA), and so on.

Returns

An encoded string

History

ColdFusion 10: Added this function.

Syntax

HMac(message, key [,algorithm] [,encoding])

History

ColdFusion 10: Added this function.

Parameters

Parameter	Required\Optional	Description
message	Required	The message to transmit. The message can be a String or a byte array.
key	Required	The secret key to create HMAC. The key can be a String or a byte array.
algorithm	Optional	Algorithm used.
encoding	Optional	Encoding to be used.

Usage

Use this function to create Hash-based Message Authentication Code for the given string based on the algorithm and encoding.

Example

<h2>HMAC Test</h2> 
<cfset x=hmac("Hi There","key1","HMACRIPEMD160")> 
<cfoutput>#x#</cfoutput>

HMac

Applies to

Description

Returns

Category

History

Syntax

See also

History

Parameters

Usage

Example