Abstract: The disclosed embodiments illustrate methods and systems for identifying a targeted content item for a user. The method includes receiving one or more encrypted first attributes of the user, and a first key. Thereafter, one or more content items are encrypted using the first key. The one or more content items are stored in a data structure such that the one or more content items are indexed in the data structure according to one or more second attributes of the one or more content items. Thereafter, at least one encrypted content item is retrieved from the data structure based on the one or more encrypted content items, the indexing of the one or more content items, and the one or more encrypted first attributes. The at least one encrypted content item is decrypted to generate the targeted content item.

Abstract: The disclosed embodiments illustrate methods and systems for identifying a targeted content item for a user. The method includes receiving one or more encrypted first attributes of the user, and a first key. Thereafter, one or more content items are encrypted using the first key. The one or more content items are stored in a data structure such that the one or more content items are indexed in the data structure according to one or more second attributes of the one or more content items. Thereafter, at least one encrypted content item is retrieved from the data structure based on the one or more encrypted content items, the indexing of the one or more content items, and the one or more encrypted first attributes. The at least one encrypted content item is decrypted to generate the targeted content item.

Abstract: An apparatus, method and non-transitory computer readable medium for verifying a digital coupon are disclosed. For example, the apparatus includes a processor and a computer readable medium storing a plurality of instructions, which when executed by the processor, cause the processor to perform operations for verifying a digital coupon. The operations include generating a profile of attributes and an associated value for each one of the attributes that are allowed to redeem the digital coupon, receiving a request from an endpoint device of a user to redeem the digital coupon with a user profile of attributes of the user and verifying the digital coupon and that the attributes of the user profile match the attributes of the profile that are allowed to redeem the digital coupon, without disclosing each value of each one of the attributes in the profile.