Abstract: Digital certificates are generated for devices by a Certificate Authority (CA), which communicates with devices via another entity—registration authority (RA)—so that the CA and RA cannot associate certificates with devices. Each certificate is associated with a public signature key, and with a public encryption key used by CA to encrypt the certificate to hide it from the RA. Both keys are derived by CA from a single key. For example, the signature key can be derived from the public encryption key rather than generated independently. However, high security is obtained even when the CA does not sign the encrypted certificate. Reduced bandwidth and computational costs are obtained as a result. Other embodiments are also provided.

Abstract: To revoke a digital certificate, activation of the digital certificate is blocked by withholding an activation code from the certificate user. The certificates are generated by a plurality of entities in a robust process that preserves user privacy (e.g. anonymity) even in case of collusion of some of the entities. The process is suitable for connected vehicles, e.g. as an improvement for Security Credential Management System (SCMS).

Abstract: According to some embodiments, in a Vehicular-to-Everything (V2X) communications environment where vehicles can exchange messages with other entities, including nearby vehicles and pedestrians, systems and methods are provided to implement a mechanism or technique based on hash chaining that allows a large sequence of messages from the same source to be validated by verifying a single digital signature.

Abstract: According to one inventive concept, a method for forming an aerogel includes forming a SiO2 gel, forming a mixture of the SiO2 gel and a TiCl4-derived precursor sol, wherein the TiCl4 sol is comprised of TiCl4 and a solvent, forming a SiO2/TiO2 wet gel, drying the SiO2/TiO2 wet gel, and heating the dried SiO2/TiO2 gel.

Abstract: Improved pseudonym certificate management is provided for connected vehicle authentication and other applications. Temporary revocation of a certificate is enabled. With respect to Security Credential Management Systems (SCMS), pre-linkage values can be employed. The pre-linkage values can be encrypted using homomorphic encryption. Other embodiments are also provided.

Abstract: Embodiments described herein provide a tree-based key management protocol with enhanced computational and bandwidth efficiency. A tree structure including a plurality of nodes is formulated according to modules in a vehicle. A group key and a blinded key are computed for a leaf node from the plurality of nodes based at least in part on a multiplication operation defined in an ecliptic curve group. Or a group key and a blinded key are recursively computed for a non-leaf node based at least in part on a key derivation function and the multiplication operation involving a group key and a blinded key corresponding to nodes that is one level down to the non-leaf node.

Abstract: Embodiments described herein provide systems and methods to prevent, or provide a countermeasure, to a co-existence attack, for example, that may occur in a Security Credential Management System (SCMS) where both regular butterfly key (RBK) protocol and unified butterfly key (UBK) protocol are supported. Embodiments described herein provide, support, employ, or implement hardware acceleration for a Hardware Security Module (HSM), for example, for cryptographic operations (e.g., block ciphers, digital signature schemes, and key exchange protocols).

Abstract: To revoke a digital certificate, activation of the digital certificate is blocked by withholding an activation code from the certificate user. The certificates are generated by a plurality of entities in a robust process that preserves user privacy (e.g. anonymity) even in case of collusion of some of the entities. The process is suitable for connected vehicles, e.g. as an improvement for Security Credential Management System (SCMS).

Abstract: To revoke a digital certificate (160p), activation of the digital certificate is blocked by withholding an activation code from the certificate user (110). The certificates are generated by a plurality of entities (210, 220, 838) in a robust process that preserves user privacy (e.g. anonymity) even in case of collusion of some of the entities. The process is suitable for connected vehicles, e.g. as an improvement for Security Credential Management System (SCMS).

Abstract: Pseudonym digital certificates (160p) are generated for devices (110/150) by a Pseudonym Certificate Authority (PCA), which communicates with devices via another entity—registration authority (RA)—so that the PCA and RA cannot associate certificates with devices. Each certificate is associated with a public signature key, and with a public encryption key used by PCA to encrypt the certificate to hide it from the RA. Both keys are derived by PCA from a single key. For example, the signature key can be derived from the public encryption key rather than generated independently. However, high security is obtained even when the PCA does not sign the encrypted certificate. Reduced bandwidth and computational costs are obtained as a result. Other embodiments are also provided.

Abstract: Improved pseudonym certificate management is provided for connected vehicle authentication and other applications. Temporary revocation of a certificate is enabled. With respect to Security Credential Management Systems (SCMS), linkage authorities can be eliminated without compromising the system security. Other embodiments are also provided.

Abstract: Pseudonym digital certificates (160p) are generated for devices (110/150) by a Pseudonym Certificate Authority (PCA), which communicates with devices via another entity—registration authority (RA)—so that the PCA and RA cannot associate certificates with devices. Each certificate is associated with a public signature key, and with a public encryption key used by PCA to encrypt the certificate to hide it from the RA. Both keys are derived by PCA from a single key. For example, the signature key can be derived from the public encryption key rather than generated independently. However, high security is obtained even when the PCA does not sign the encrypted certificate. Reduced bandwidth and computational costs are obtained as a result. Other embodiments are also provided.

Abstract: Provided herein are compositions and methods of treating muscular dystrophy (MD), such as administering an effective amount of a composition that increases the expression of JAG1, a composition comprising a JAG1 agonist, or a composition that promotes JAG1 signaling. Also provided are methods of prognosing MD or evaluating responsiveness to treatment for MD, e.g., by measuring an expression level of JAG1, and methods of identifying a compound for the treatment of MD.

Abstract: The present invention relates to a method that uses error-coding codes for validating polymorphisms and mutations/alterations in a DNA sequence which encodes a polypeptide sequence. The present invention also relates to a digital communication system for carrying out the method, employing a model for the biological coding system which resembles the most efficient digital communication. The method and digital communication system may be useful for the predictive analysis of diseases originated by mutations or polymorphisms in genes.

Abstract: The present invention relates to a method that uses error-coding codes for validating polymorphisms and mutations/alterations in a DNA sequence which encodes a polypeptide sequence. The present invention also relates to a digital communication system for carrying out the method, employing a model for the biological coding system which resembles the most efficient digital communication. The method and digital communication system may be useful for the predictive analysis of diseases originated by mutations or polymorphisms in genes.