Patents by Inventor Daniel Richard L. Brown

Daniel Richard L. Brown has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12074985
    Abstract: A method for verification at a computing device of a signed message received from a first party over a public communications channel, the method including extracting a message digest “a” belonging to a semigroup from the signed message; obtaining a public key [c,e] for the first party, including a fixed value checker “c” and an endpoint “e”, checker “c” and endpoint “e” belonging to the semigroup and the endpoint comprising a multiplication of a private key “b” for the first party and the checker “c”, multiplying the message digest “a” and the endpoint “e” to create an endmatter “ae”; extracting a signature “d” from the signed message, the signature “d” belonging to the semigroup and being a multiplication of message digest “a” and private key “b”; multiplying the signature “d” and the checker “c” to create a signcheck “dc”; and verifying that the endmatter “ae” matches the signcheck “dc”.
    Type: Grant
    Filed: September 13, 2023
    Date of Patent: August 27, 2024
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Patent number: 12069174
    Abstract: Systems, methods, and software can be used to improve security of an authentication process in a cargo shipping system. In some aspect, an authentication request message is received at a sensor from a cargo tracking device. The authentication request message includes a key that the sensor will use to decrypt its encrypted public key/private key pair. In response to the authentication request message, the sensor sends an authentication response message to the cargo tracking device that is encrypted using a derived symmetric key. The cargo tracking device sends an authentication confirmation message to the sensor in response to the authentication response message.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: August 20, 2024
    Assignee: Malikie Innovations Limited
    Inventors: Michael Peter Montemurro, Daniel Richard L. Brown
  • Patent number: 12028446
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, from a semigroup, a first value “a”; multiplying the first value “a” by a second value “b” to create a third value “d”, the second value “b” being selected from the semigroup; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value comprising the second value “b” multiplied by a fifth value “c” selected by the second party from the semigroup; and creating a shared secret by multiplying the first value “a” with the fourth value “e”, wherein the shared secret matches the third value “d” multiplied by the fifth value “c”.
    Type: Grant
    Filed: June 7, 2023
    Date of Patent: July 2, 2024
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Publication number: 20240195616
    Abstract: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded as the x-coordinate of a point Q on the elliptic curve and the x-coordinate is tested for validity on the desired elliptic curve. If valid, the x-coordinate is decompressed to the point Q, wherein the choice of which is the two points is also derived from the hash value. Intentional use of escrow keys can provide for back up functionality. The relationship between P and Q is used as an escrow key and stored by for a security domain. The administrator logs the output of the generator to reconstruct the random number with the escrow key.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 13, 2024
    Applicant: Malikie Innovations Limited
    Inventors: Daniel Richard L. Brown, Scott Alexander Vanstone
  • Patent number: 11997195
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, a first value “a”; multiplying the first value “a” by a second value “b” using Knuth multiplication to create a third value “d”, the third value “d” being a semistandard tableau; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value being a second semistandard tableau comprising the second value “b” multiplied by a fifth value “c” selected by the second party; and creating a shared secret by multiplying the first value “a” with the fourth value “e” using Knuth multiplication, wherein the shared secret matches the third value “d” multiplied by the fifth value “c” using Knuth multiplication.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: May 28, 2024
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Patent number: 11956370
    Abstract: A method for verification at a computing device of a signed message received from a first party over a public communications channel, the method including extracting a message digest “a” belonging to a semigroup from the signed message; obtaining a public key [c,e] for the first party, including a fixed value checker “c” and an endpoint “e”, checker “c” and endpoint “e” belonging to the semigroup and the endpoint comprising a multiplication of a private key “b” for the first party and the checker “c”, multiplying the message digest “a” and the endpoint “e” to create an endmatter “ae”; extracting a signature “d” from the signed message, the signature “d” belonging to the semigroup and being a multiplication of message digest “a” and private key “b”; multiplying the signature “d” and the checker “c” to create a signcheck “dc”; and verifying that the endmatter “ae” matches the signcheck “dc”.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: April 9, 2024
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Patent number: 11902440
    Abstract: A method for providing Cheon-resistance security for a static elliptic curve Diffie-Hellman cryptosystem (ECDH), the method including providing a system for message communication between a pair of correspondents, a message being exchanged in accordance with ECDH instructions executable on computer processors of the respective correspondents, the ECDH instructions using a curve selected from a plurality of curves, the selecting including choosing a range of curves; selecting, from the range of curves, curves matching a threshold efficiency; excluding, within the selected curves, curves which may include intentional vulnerabilities; and electing, from non-excluded selected curves, a curve with Cheon resistance, the electing comprising a curve from an additive group of order q, wherein q is prime, such that q?1=cr and q+1=ds, where r and s are primes and c and d are integer Cheon cofactors of the group, such that cd?48.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: February 13, 2024
    Assignee: Malikie Innovations Limited
    Inventor: Daniel Richard L. Brown
  • Patent number: 11876901
    Abstract: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded as the x-coordinate of a point Q on the elliptic curve and the x-coordinate is tested for validity on the desired elliptic curve. If valid, the x-coordinate is decompressed to the point Q, wherein the choice of which is the two points is also derived from the hash value. Intentional use of escrow keys can provide for back up functionality. The relationship between P and Q is used as an escrow key and stored by for a security domain. The administrator logs the output of the generator to reconstruct the random number with the escrow key.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: January 16, 2024
    Assignee: Malikie Innovations Limited
    Inventors: Daniel Richard L. Brown, Scott Alexander Vanstone
  • Publication number: 20240007303
    Abstract: A method for verification at a computing device of a signed message received from a first party over a public communications channel, the method including extracting a message digest “a” belonging to a semigroup from the signed message; obtaining a public key [c,e] for the first party, including a fixed value checker “c” and an endpoint “e”, checker “c” and endpoint “e” belonging to the semigroup and the endpoint comprising a multiplication of a private key “b” for the first party and the checker “c”, multiplying the message digest “a” and the endpoint “e” to create an endmatter “ae”; extracting a signature “d” from the signed message, the signature “d” belonging to the semigroup and being a multiplication of message digest “a” and private key “b”; multiplying the signature “d” and the checker “c” to create a signcheck “dc”; and verifying that the endmatter “ae” matches the signcheck “dc”.
    Type: Application
    Filed: September 13, 2023
    Publication date: January 4, 2024
    Inventor: Daniel Richard L. BROWN
  • Publication number: 20230318815
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, from a semigroup, a first value “a”; multiplying the first value “a” by a second value “b” to create a third value “d”, the second value “b” being selected from the semigroup; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value comprising the second value “b” multiplied by a fifth value “c” selected by the second party from the semigroup; and creating a shared secret by multiplying the first value “a” with the fourth value “e”, wherein the shared secret matches the third value “d” multiplied by the fifth value “c”.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventor: Daniel Richard L. BROWN
  • Patent number: 11711208
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, from a semigroup, a first value “a”; multiplying the first value “a” by a second value “b” to create a third value “d”, the second value “b” being selected from the semigroup; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value comprising the second value “b” multiplied by a fifth value “c” selected by the second party from the semigroup; and creating a shared secret by multiplying the first value “a” with the fourth value “e”, wherein the shared secret matches the third value “d” multiplied by the fifth value “c”.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: July 25, 2023
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Publication number: 20230224157
    Abstract: A method for providing Cheon-resistance security for a static elliptic curve Diffie-Hellman cryptosystem (ECDH), the method including providing a system for message communication between a pair of correspondents, a message being exchanged in accordance with ECDH instructions executable on computer processors of the respective correspondents, the ECDH instructions using a curve selected from a plurality of curves, the selecting including choosing a range of curves; selecting, from the range of curves, curves matching a threshold efficiency; excluding, within the selected curves, curves which may include intentional vulnerabilities; and electing, from non-excluded selected curves, a curve with Cheon resistance, the electing comprising a curve from an additive group of order q, wherein q is prime, such that q?1=cr and q+1=ds, where r and s are primes and c and d are integer Cheon cofactors of the group, such that cd?48.
    Type: Application
    Filed: February 27, 2023
    Publication date: July 13, 2023
    Inventor: Daniel Richard L. BROWN
  • Publication number: 20230127934
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, a first value “a”; multiplying the first value “a” by a second value “b” using Knuth multiplication to create a third value “d”, the third value “d” being a semistandard tableau; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value being a second semistandard tableau comprising the second value “b” multiplied by a fifth value “c” selected by the second party; and creating a shared secret by multiplying the first value “a” with the fourth value “e” using Knuth multiplication, wherein the shared secret matches the third value “d” multiplied by the fifth value “c” using Knuth multiplication.
    Type: Application
    Filed: December 22, 2022
    Publication date: April 27, 2023
    Inventor: Daniel Richard L. BROWN
  • Patent number: 11616648
    Abstract: A method for providing Cheon-resistance security for a static elliptic curve Diffie-Hellman cryptosystem (ECDH), the method including providing a system for message communication between a pair of correspondents, a message being exchanged in accordance with ECDH instructions executable on computer processors of the respective correspondents, the ECDH instructions using a curve selected from a plurality of curves, the selecting including choosing a range of curves; selecting, from the range of curves, curves matching a threshold efficiency; excluding, within the selected curves, curves which may include intentional vulnerabilities; and electing, from non-excluded selected curves, a curve with Cheon resistance, the electing comprising a curve from an additive group of order q, wherein q is prime, such that q?1=cr and q+1=ds, where r and s are primes and c and d are integer Cheon cofactors of the group, such that cd?48.
    Type: Grant
    Filed: July 12, 2022
    Date of Patent: March 28, 2023
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Publication number: 20230083997
    Abstract: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded as the x-coordinate of a point Q on the elliptic curve and the x-coordinate is tested for validity on the desired elliptic curve. If valid, the x-coordinate is decompressed to the point Q, wherein the choice of which is the two points is also derived from the hash value. Intentional use of escrow keys can provide for back up functionality. The relationship between P and Q is used as an escrow key and stored by for a security domain. The administrator logs the output of the generator to reconstruct the random number with the escrow key.
    Type: Application
    Filed: September 23, 2022
    Publication date: March 16, 2023
    Applicant: BlackBerry Limited
    Inventors: Daniel Richard L. BROWN, Scott Alexander VANSTONE
  • Patent number: 11569987
    Abstract: A method for key agreement between a first party and a second party over a public communications channel, the method including selecting, by the first party, a first value “a”; multiplying the first value “a” by a second value “b” using Knuth multiplication to create a third value “d”, the third value “d” being a semistandard tableau; sending the third value “d” to the second party; receiving, from the second party, a fourth value “e”, the fourth value being a second semistandard tableau comprising the second value “b” multiplied by a fifth value “c” selected by the second party; and creating a shared secret by multiplying the first value “a” with the fourth value “e” using Knuth multiplication, wherein the shared secret matches the third value “d” multiplied by the fifth value “c” using Knuth multiplication.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: January 31, 2023
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown
  • Publication number: 20220417029
    Abstract: A method for verification at a computing device of a signed message received from a first party over a public communications channel, the method including extracting a message digest “a” belonging to a semigroup from the signed message; obtaining a public key [c,e] for the first party, including a fixed value checker “c” and an endpoint “e”, checker “c” and endpoint “e” belonging to the semigroup and the endpoint comprising a multiplication of a private key “b” for the first party and the checker “c”, multiplying the message digest “a” and the endpoint “e” to create an endmatter “ae”; extracting a signature “d” from the signed message, the signature “d” belonging to the semigroup and being a multiplication of message digest “a” and private key “b”; multiplying the signature “d” and the checker “c” to create a signcheck “dc”; and verifying that the endmatter “ae” matches the signcheck “dc”.
    Type: Application
    Filed: June 23, 2021
    Publication date: December 29, 2022
    Inventor: Daniel Richard L. Brown
  • Publication number: 20220345308
    Abstract: A method for providing Cheon-resistance security for a static elliptic curve Diffie-Hellman cryptosystem (ECDH), the method including providing a system for message communication between a pair of correspondents, a message being exchanged in accordance with ECDH instructions executable on computer processors of the respective correspondents, the ECDH instructions using a curve selected from a plurality of curves, the selecting including choosing a range of curves; selecting, from the range of curves, curves matching a threshold efficiency; excluding, within the selected curves, curves which may include intentional vulnerabilities; and electing, from non-excluded selected curves, a curve with Cheon resistance, the electing comprising a curve from an additive group of order q, wherein q is prime, such that q?1=cr and q+1=ds, where r and s are primes and c and d are integer Cheon cofactors of the group, such that cd?48.
    Type: Application
    Filed: July 12, 2022
    Publication date: October 27, 2022
    Inventor: Daniel Richard L. BROWN
  • Patent number: 11477019
    Abstract: An elliptic curve random number generator avoids escrow keys by choosing a point Q on the elliptic curve as verifiably random. An arbitrary string is chosen and a hash of that string computed. The hash is then converted to a field element of the desired field, the field element regarded as the x-coordinate of a point Q on the elliptic curve and the x-coordinate is tested for validity on the desired elliptic curve. If valid, the x-coordinate is decompressed to the point Q, wherein the choice of which is the two points is also derived from the hash value. Intentional use of escrow keys can provide for back up functionality. The relationship between P and Q is used as an escrow key and stored by for a security domain. The administrator logs the output of the generator to reconstruct the random number with the escrow key.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: October 18, 2022
    Assignee: BlackBerry Limited
    Inventors: Daniel Richard L. Brown, Scott Alexander Vanstone
  • Patent number: 11424924
    Abstract: A method for providing Cheon-resistance security for a static elliptic curve Diffie-Hellman cryptosystem (ECDH), the method including providing a system for message communication between a pair of correspondents, a message being exchanged in accordance with ECDH instructions executable on computer processors of the respective correspondents, the ECDH instructions using a curve selected from a plurality of curves, the selecting including choosing a range of curves; selecting, from the range of curves, curves matching a threshold efficiency; excluding, within the selected curves, curves which may include intentional vulnerabilities; and electing, from non-excluded selected curves, a curve with Cheon resistance, the electing comprising a curve from an additive group of order q, wherein q is prime, such that q?1=cr and q+1=ds, where r and s are primes and c and d are integer Cheon cofactors of the group, such that cd?48.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: August 23, 2022
    Assignee: BlackBerry Limited
    Inventor: Daniel Richard L. Brown