The Secure Messaging for PINs callable service will encrypt a text block including a clear PIN block recovered from an encrypted PIN block. The input PIN block will be reformatted if the block format in the input_PIN_profile is different than the block format n the output_PIN_profile. The clear PIN block will only be self encrypted if the SELFENC keyword is specified in the rule_array. The text block is normally a 'Value' field of a secure message TLV (Tag/Length/Value) element of a secure message. TLV is defined in ISO/IEC 7816-4.

An enhanced PIN security mode on a CEX3C is available to implement restrictions required by the ANSI X9.8 PIN standard. To enforce these restrictions, you must enable the following control points in the default role.

• ANSI X9.8 PIN - Enforce PIN block restrictions
• ANSI X9.8 PIN - Allow modification of PAN
• ANSI X9.8 PIN - Allow only ANSI PIN blocks

The callable service name for AMODE(64) invocation is CSNESPN.