The encrypt and decrypt functions have been enhanced in CFMX7 to accept optional arguments that are not in the ColdFusion MX 7 documentation.

The arguments to the encrypt and decrypt functions are changed as follows:

Encrypt(string, key, [algorithm ,encoding ,IVorSalt ,iterations])

Decrypt(string, key, [algorithm ,encoding ,IVorSalt ,iterations])

Read the complete ColdFusion technote here.