ltm rule command sha256

iRule(1)					  BIG-IP TMSH Manual					     iRule(1)

sha256
       Returns the Secure Hash Algorithm (SHA2) 256-bit message digest of the specified string.

SYNOPSIS
       sha256 ANY_CHARS

DESCRIPTION
       Returns the Secure Hash Algorithm (SHA2) 256-bit message digest of the specified string. If an error occurs,
       an empty string is returned. Used to ensure data integrity.

RETURN VALUE
       sha256 
	   Returns the Secure Hash Algorithm version 2.0 (SHA2) message digest of the specified string using 256 bit
       digest length. If an error occurs, an empty string is returned.

VALID DURING
       RULE_INIT

EXAMPLES
	when HTTP_REQUEST {
	    binary scan [sha256 [HTTP::host]] w1 key

	    set key [expr {$key & 1}]
	    switch $key {
		0 { pool my_pool member 1.2.3.4:80 }
		1 { pool my_pool member 5.6.7.8:80 }
	    }
	}

HINTS
SEE ALSO
CHANGE LOG
       @BIGIP-9.4.0 --First introduced the command.  @BIGIP-11.1.0 --First introduced the command.

BIG-IP						      2020-06-23					     iRule(1)