Abstract: Provided is a system and method for confidential repository searching. The method executed on a first computing device and includes: receiving an encrypted query term from the second computing device; searching the encrypted data repository by determining one or more matches of the encrypted query term to data in the encrypted data repository; communicating the one or more matches to the second computing device; receiving associative data from the second computing device, the associative data associated with data in the encrypted data repository that is to be retrieved and associated with one of the one or more matches; retrieving the encrypted data in the encrypted data repository associated with the received associative data; and communicating the retrieved encrypted data to the second computing device.

Abstract: Provided is a system and method for confidential repository searching. The method executed on a first computing device and includes: receiving an encrypted query term from the second computing device; searching the encrypted data repository by determining one or more matches of the encrypted query term to data in the encrypted data repository; communicating the one or more matches to the second computing device; receiving associative data from the second computing device, the associative data associated with data in the encrypted data repository that is to be retrieved and associated with one of the one or more matches; retrieving the encrypted data in the encrypted data repository associated with the received associative data; and communicating the retrieved encrypted data to the second computing device.

Abstract: Provided is a system and method for confidential string-matching and confidential deep-packet inspection. The method includes: receiving encrypted ciphertexts from a first computing device; windowing a text corpus and applying a hash; performing binning and splitting on the corpus set of hashes; performing batching on the binned and split corpus set of hashes; determining match ciphertexts by evaluating a homomorphic encryption circuit between the encrypted ciphertexts and the batched corpus set of hashes; and communicating the match ciphertexts to the first computing device, the confidential string matching determinable by the first computing device by: decrypting the match ciphertexts, determining from the decryption output, if the hash value for each pattern window matches the hash value for any corpus windows and if the matched windows are adjacent in the corpus.

Abstract: Provided is a system and method for hybrid windowing for string-matching of input patterns to a corpus. The method including: establishing a first window size and a hash function; performing hashing on input patterns having a size within a given range using dynamic-sized windows to determine a dynamic-windowed hash set, the given range established using the first window size; performing hashing on input patterns having a size outside the given range using fixed-sized windows to determine a fixed-windowed hash set; combining the dynamic-windowed hash set and the fixed-windowed hash set to determine a combined hash set; and outputting the combined hash set for use in the confidential string-matching.

Abstract: Provided is a system and method for confidential string-matching and confidential deep-packet inspection. The method includes: receiving encrypted ciphertexts from a first computing device; windowing a text corpus and applying a hash; performing binning and splitting on the corpus set of hashes; performing batching on the binned and split corpus set of hashes; determining match ciphertexts by evaluating a homomorphic encryption circuit between the encrypted ciphertexts and the batched corpus set of hashes; and communicating the match ciphertexts to the first computing device, the confidential string matching determinable by the first computing device by: decrypting the match ciphertexts, determining from the decryption output, if the hash value for each pattern window matches the hash value for any corpus windows and if the matched windows are adjacent in the corpus.

Abstract: Provided is a system and method for confidential string-matching and confidential deep-packet inspection. The method includes: receiving encrypted ciphertexts from a first computing device; windowing a text corpus and applying a hash; performing binning and splitting on the corpus set of hashes; performing batching on the binned and split corpus set of hashes; determining match ciphertexts by evaluating a homomorphic encryption circuit between the encrypted ciphertexts and the batched corpus set of hashes; and communicating the match ciphertexts to the first computing device, the confidential string matching determinable by the first computing device by: decrypting the match ciphertexts, determining from the decryption output, if the hash value for each pattern window matches the hash value for any corpus windows and if the matched windows are adjacent in the corpus.