cfdocs

hmac

Creates a keyed-hash message authentication code (HMAC), which can be used to verify authenticity and integrity of a message by two parties that share the key.

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

returns string

Argument Reference

Name	Type	Required	Default	Description	Values
message	any	Yes		The message or data to authenticate. This can be a String or a byte array.
key	any	Yes		The secret key. The key can be a String or byte array.
algorithm	string	No	HMACMD5	An algorithm supported by the java crypto provider.	/Users/garethedwards/development/github/cfdocs/docs/functions/hmac.md	HMACSHA512
encoding	string	No	utf-8	The character encoding to use when converting the message to bytes. Must be a character encoding name recognized by the Java runtime.	/Users/garethedwards/development/github/cfdocs/docs/functions/hmac.md	utf-16

Example HMAC Using HMACSHA256

hmac("msg", "secret", "HMACSHA256")

Expected Result: FE4F9C418F683F034F6AF90D1DD5B86AC0355DD96332C59CC74598D0736107F6

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