Patents by Inventor Ahmed Ibrahim
Ahmed Ibrahim 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: 9165297Abstract: The virtual account and token-based digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user has one master pair of private and public keys and many pseudonym pairs of private and public keys. The new protocols combine blind digital signature and pseudonym-based authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for depositing digital cash with a digital cash issuer. Pseudonym key pairs are used for spending the digital cash. Digital cash includes digital cash tokens in virtual accounts, which can be managed from a user's fixed or mobile computing platform.Type: GrantFiled: September 10, 2012Date of Patent: October 20, 2015Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Ahmed Ibrahim Al-Herz, Lahouari Ghouti, Mohammad K. Ibrahim
-
Publication number: 20150294662Abstract: An earphone adapted to fit within a human ear that generates sound via the propagation of one or more diaphragms aligned to fit the structure and shape of the earphone. The earphone allows ambient sound to pass through the device in order to be heard by the user. The earphone includes a variety of sensors adapted to characterize the surrounding acoustic environment and actively negate undesired sounds by generating a cancelling signal specific to the undesired sound or sounds. The earphone allows users to select particular sounds to cancel or to negate all of the surrounding noise. The earphone itself can be used to characterize repetitive environmental sounds that are predictable by the system. Additionally, the earphone can be used in conjunction with a buffering device in communication with a source of non-repetitive, unpredictable sounds in order to characterize and negate those sounds.Type: ApplicationFiled: April 13, 2015Publication date: October 15, 2015Inventor: Ahmed Ibrahim
-
Publication number: 20150203844Abstract: Several embodiments relate to methods of repairing and/or regenerating damaged or diseased tissue comprising administering to the damaged or diseased tissues compositions comprising exosomes. In several embodiments, the exosomes comprise one or more microRNA that result in alterations in gene or protein expression, which in turn result in improved cell or tissue viability and/or function.Type: ApplicationFiled: August 13, 2013Publication date: July 23, 2015Inventors: Eduardo Marban, Ke Cheng, Ahmed Ibrahim
-
Patent number: 9000851Abstract: A cavity resonator integrated on a monolithic microwave integrated circuit (MMIC) is provided. The cavity resonator includes a cavity defined by an upper metal surface and a lower metal surface embedded in a low conductivity semiconductor, and a plurality of discrete metal connections coupled between the upper and lower metal surfaces, and at least one port for coupling to the cavity electromagnetically.Type: GrantFiled: July 13, 2012Date of Patent: April 7, 2015Assignee: Hittite Microwave CorporationInventors: Ekrem Oran, Ahmed Ibrahim, Michael Koechlin
-
Publication number: 20140195440Abstract: Virtual account based digital cash protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the virtual account based digital cash protocols provide strong protection of the user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes.Type: ApplicationFiled: February 3, 2014Publication date: July 10, 2014Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Patent number: 8738539Abstract: Virtual account based digital cash protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the virtual account based digital cash protocols provide strong protection of the user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes.Type: GrantFiled: March 17, 2011Date of Patent: May 27, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Publication number: 20140074721Abstract: The hybrid virtual account and token-based digital cash protocols provide a user with many pairs of secret and public keys. One of the pairs is the master pair, which consists of one master user private key and one master user public key. Other pairs are pseudonym pairs, wherein each consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and pseudonym key pairs circumvents the need for blind signatures. None of the invention's protocols require blind signatures. The protocols comprise public key protocols, digital signatures and symmetric key protocols.Type: ApplicationFiled: September 10, 2012Publication date: March 13, 2014Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: AHMED IBRAHIM AL-HERZ, LAHOUARI GHOUTI, MOHAMMAD K. IBRAHIM
-
Publication number: 20140074720Abstract: The virtual account and token-based digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user has one master pair of private and public keys and many pseudonym pairs of private and public keys. The new protocols combine blind digital signature and pseudonym-based authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for depositing digital cash with a digital cash issuer. Pseudonym key pairs are used for spending the digital cash. Digital cash includes digital cash tokens in virtual accounts, which can be managed from a user's fixed or mobile computing platform.Type: ApplicationFiled: September 10, 2012Publication date: March 13, 2014Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: AHMED IBRAHIM AL-HERZ, LAHOUARI GHOUTI, MOHAMMAD K. IBRAHIM
-
Patent number: 8442919Abstract: Digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting digital cash token based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into digital cash tokens by a digital cash issuer. All pseudonyms can be used for spending the digital cash tokens. These protocols ensure anonymity when withdrawing digital cash from the user's account under the user's real identity in addition to providing pseudonym authentication when spending digital cash tokens under a pseudonym.Type: GrantFiled: December 14, 2010Date of Patent: May 14, 2013Assignee: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Patent number: 8438116Abstract: Digital cash token protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the digital cash token protocols provide strong protection of user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes. The protocols use public key protocols and digital signatures and symmetric key protocols, which may be readily implemented in standard information security based systems based on cryptographic constructs.Type: GrantFiled: August 10, 2011Date of Patent: May 7, 2013Assignee: King Fahd University of Pertroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K Ibrahim
-
Patent number: 8352378Abstract: Virtual account based digital cash protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting virtual account based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into virtual account based digital cash by a digital cash issuer. All pseudonyms can be used for spending the virtual account based digital cash.Type: GrantFiled: December 6, 2010Date of Patent: January 8, 2013Assignee: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Patent number: 8351322Abstract: Embodiments of an apparatus and methods for transmission of timing and synchronization information for mobile WiMAX systems are generally described herein. Other embodiments may be described and claimed.Type: GrantFiled: February 24, 2010Date of Patent: January 8, 2013Assignee: Intel CorporationInventors: Yang-Seok Choi, Ahmed Ibrahim, Jiacheng Wang
-
Publication number: 20120239580Abstract: Virtual account based digital cash protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the virtual account based digital cash protocols provide strong protection of the user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Inventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Patent number: 8160966Abstract: Digital cash token protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the digital cash token protocols provide strong protection of user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes. The protocols use public key protocols and digital signatures and symmetric key protocols, which may be readily implemented in standard information security based systems based on cryptographic constructs.Type: GrantFiled: August 17, 2007Date of Patent: April 17, 2012Assignee: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Publication number: 20110302088Abstract: Digital cash token protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the digital cash token protocols provide strong protection of user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes. The protocols use public key protocols and digital signatures and symmetric key protocols, which may be readily implemented in standard information security based systems based on cryptographic constructs.Type: ApplicationFiled: August 10, 2011Publication date: December 8, 2011Applicant: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Irbrahim
-
Publication number: 20110191251Abstract: Digital cash token protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting digital cash token based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into digital cash tokens by a digital cash issuer. All pseudonyms can be used for spending the digital cash tokens. These protocols ensure anonymity when withdrawing digital cash from the user's account under the user's real identity in addition to providing pseudonym authentication when spending digital cash tokens under a pseudonym.Type: ApplicationFiled: December 14, 2010Publication date: August 4, 2011Inventors: Ahmed Ibrahim Al-Herz, Mohammad K. Irbrahim
-
Patent number: 7958057Abstract: Virtual account based digital cash protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting virtual account based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into virtual account based digital cash by a digital cash issuer. All pseudonyms can be used for spending the virtual account based digital cash.Type: GrantFiled: March 28, 2007Date of Patent: June 7, 2011Assignee: King Fahd University of Petroleum and MineralsInventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Publication number: 20110099113Abstract: Virtual account based digital cash protocols use a combination of blind digital signatures and pseudonym authentication with at least two pairs of public and private keys. A user is provided with one master pair of private and public keys and as many pseudonym pairs of private and public keys as desired. The resulting virtual account based hybrid protocols combine the advantages of blind digital signature and pseudonym authentication. Blind digital signatures based on the master pair of keys are used to withdraw digital cash from the user's bank account under the user's real identity. A pseudonym pair of keys is used for converting digital cash into virtual account based digital cash by a digital cash issuer. All pseudonyms can be used for spending the virtual account based digital cash.Type: ApplicationFiled: December 6, 2010Publication date: April 28, 2011Inventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim
-
Publication number: 20100226322Abstract: Embodiments of an apparatus and methods for transmission of timing and synchronization information for mobile WiMAX systems are generally described herein. Other embodiments may be described and claimed.Type: ApplicationFiled: February 24, 2010Publication date: September 9, 2010Inventors: Yang-Seok Choi, Ahmed Ibrahim, Jiachen Wang
-
Publication number: 20090210349Abstract: Virtual account based digital cash protocols employ two pairs of private and public keys. Each public key is certified separately and the protocols do not use any blind signature schemes. As a result, the virtual account based digital cash protocols provide strong protection of the user privacy by using two certified public keys instead of a blind signature. One pair of certified keys consists of one master user private key and one master user public key. A second pair of certified keys consists of one pseudonym user private key and one pseudonym user public key. The use of a master key pair and a pseudonym key pair circumvents the need for blind signatures. As a result, the proposed protocols do not require blind signatures and do not add additional overhead and security requirements necessitated by conventional blind signature schemes.Type: ApplicationFiled: February 14, 2008Publication date: August 20, 2009Inventors: Ahmed Ibrahim Al-Herz, Mohammad K. Ibrahim