A system and method are provided for secure encryption via use of at least two different communication channels, such as the internet and a Short Message Service (SMS) channel, to transmit an authentication request and/or encryption information between at least one user device that is associated with a common user and a network entity. In this regard, an authentication request and/or the encryption information generated in response to an authentication request is separated into at least two portions and transmitted via different communication channels. Even if a third party accesses one of the communication channels and receives a portion of the authentication request and/or the resulting encryption information, the system and method effectively prevent the third party from receiving information sufficient to enable the third party to successfully interpret future communications between the parties since other portion(s) of the authentication request and/or the encryption information is transmitted via other channel(s).