公开(公告)号：US20180309569A1

公开(公告)日：2018-10-25

申请号：US15496287

申请日：2017-04-25

Applicant: ENTIT SOFTWARE LLC

Inventor： Luther Martin ,  Timothy Roake

IPC: H04L9/06 ,  G06F12/14 ,  H04L9/32 ,  H04L9/08

CPC classification number: G06F12/1408 ,  G06Q20/00 ,  H04L9/088 ,  H04L9/3239 ,  H04L2209/38

Abstract: Format preserving encryption of object code is disclosed. One example is a system including at least one processor and a memory storing instructions executable by the at least one processor to identify object code to be secured, where the object code comprises a list of instructions, each instruction comprising an opcode and zero or more parameters. A format preserving encryption (FPE) is applied to the received object code, where the FPE is applied separately to a sub-plurality of instructions in the list of instructions, to generate an encrypted object code comprising a sub-plurality of encrypted instructions. An encrypted object code is provided to a service provider, where the encrypted object code comprises the sub-plurality of encrypted instructions, and any unencrypted portions of the object code.

公开(公告)号：US11146397B2

公开(公告)日：2021-10-12

申请号：US15800008

申请日：2017-10-31

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake ,  Cheryl He

IPC: H04L9/30 ,  H04L9/32 ,  H04L9/14 ,  H04L9/06

Abstract: A technique includes encrypting plaintext to provide a set of projective coordinates that represents a point of an abelian variety curve and represents ciphertext. The technique includes encoding the projective coordinates with metadata, which is associated with the ciphertext.

公开(公告)号：US10956610B2

公开(公告)日：2021-03-23

申请号：US15913523

申请日：2018-03-06

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake

IPC: H04N7/16 ,  G06F7/04 ,  G06F21/62 ,  G06F16/901 ,  G06F16/903 ,  G06Q50/26

Abstract: A technique includes accessing data representing plaintext. The plaintext has a first string size. The technique includes using a table to retrieve data representing a token that corresponds to the plaintext. The table has an associated string lookup size smaller than the first string size.

公开(公告)号：US10796006B2

公开(公告)日：2020-10-06

申请号：US15693043

申请日：2017-08-31

Applicant: EntIT Software LLC

Inventor： Timothy Roake ,  Cheryl He ,  Luther Martin

IPC: G06F21/60 ,  G06F21/62 ,  H04L9/06 ,  H04L9/14

Abstract: In some examples, geographical track data obfuscation may include ascertaining geographical data points that include a first data point and subsequent data points. For each of the subsequent data points, a delta degree value may be determined as a difference between a subsequent data point and a corresponding previous data point. A first format preserving encryption (FPE) may be applied to encrypt longitude and latitude values of the first data point. A second FPE may be applied by applying a translation of a plurality of translations to encrypt each delta degree value. A total distance traveled, a total time, and/or a total elevation gain may be extracted from the encrypted first data point and the encrypted delta degree values.

公开(公告)号：US20190294820A1

公开(公告)日：2019-09-26

申请号：US15926392

申请日：2018-03-20

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake

IPC: G06F21/62 ,  H04L9/06

Abstract: A technique includes accessing data, which represents a plurality of plaintext values and converting the plaintext values to pseudonym values, which are associated with a predetermined statistical distribution. Converting the plaintext values includes, for a given plaintext value, repeatedly applying a hash function to provide corresponding hash values based on the given plaintext value; and combining the hash values to provide a pseudonym value, which corresponds to the given plaintext value.

公开(公告)号：US20180309579A1

公开(公告)日：2018-10-25

申请号：US15496285

申请日：2017-04-25

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake

IPC: H04L9/32 ,  G06Q20/38 ,  G06F21/62

CPC classification number: H04L9/3242 ,  G06F21/6245 ,  G06Q20/3827 ,  H04L9/3226

Abstract: Secure representation via a format preserving hash function is disclosed. One example is a system including at least one processor and a memory storing instructions executable by the at least one processor to receive an input sequence of characters comprising characters from a first collection of Unicode code points, where the input sequence corresponds to an identifier to be represented in a secure form. A cryptographic hash function is applied to the input sequence to generate a hashed sequence of characters comprising characters from the first collection of Unicode code points. The hashed sequence is transformed to an output sequence of characters comprising characters from a proper sub-collection of the first collection of Unicode code points. The output sequence is provided to a service provider as a secure representative of the identifier.

公开(公告)号：US10749674B2

公开(公告)日：2020-08-18

申请号：US15720777

申请日：2017-09-29

Applicant: ENTIT Software LLC

Inventor： Timothy Roake ,  Cheryl He ,  Luther Martin

IPC: H04L9/08 ,  G06F21/60 ,  H04L9/14

Abstract: In one example, a system for format preserving encryption utilizing a key version can include a processor, and a memory resource storing instructions executable by the processor to determine a quantity of significant bits for a value to be encrypted, mask the value to include the quantity of significant bits, perform format preserving encryption on the masked value to generate an encrypted value, and append a key version to the encrypted value.

公开(公告)号：US20190278941A1

公开(公告)日：2019-09-12

申请号：US15913523

申请日：2018-03-06

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake

IPC: G06F21/62 ,  G06F17/30

Abstract: A technique includes accessing data representing plaintext. The plaintext has a first string size. The technique includes using a table to retrieve data representing a token that corresponds to the plaintext. The table has an associated string lookup size smaller than the first string size.

公开(公告)号：US20190132129A1

公开(公告)日：2019-05-02

申请号：US15800008

申请日：2017-10-31

Applicant: EntIT Software LLC

Inventor： Luther Martin ,  Timothy Roake ,  Cheryl He

IPC: H04L9/30 ,  H04L9/06 ,  H04L9/14 ,  H04L9/32

Abstract: A technique includes encrypting plaintext to provide a set of projective coordinates that represents a point of an abelian variety curve and represents ciphertext. The technique includes encoding the projective coordinates with metadata, which is associated with the ciphertext.

公开(公告)号：US20190103965A1

公开(公告)日：2019-04-04

申请号：US15720777

申请日：2017-09-29

Applicant: ENTIT Software LLC

Inventor： Timothy Roake ,  Cheryl He ,  Luther Martin

IPC: H04L9/08 ,  H04L9/14 ,  G06F21/60

Abstract: In one example, a system for format preserving encryption utilizing a key version can include a processor, and a memory resource storing instructions executable by the processor to determine a quantity of significant bits for a value to be encrypted, mask the value to include the quantity of significant bits, perform format preserving encryption on the masked value to generate an encrypted value, and append a key version to the encrypted value.