Abstract: A method and system. A computer iteratively processes a unique condition digest of at least two condition digests in each iteration of a loop for a sufficient number of iterations to process all condition digests of the at least two condition digests. The processing in each iteration includes concatenating a reference digest with the unique condition digest of the iteration to generate a concatenand and hashing the concatenand to generate a hashed concatenand that serves as the reference digest for the next iteration if the next iteration is performed. Each unique condition digest is a different condition digest in each iteration of the loop. The regenerated reference digest of the last iteration of the loop is a last digest.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A system and a computer program product are disclosed. The system is configured to generate a digital empowerment certificate of a voter. The digital empowerment certificate includes an indication of identification data that uniquely identifies the voter to the authentication body, references to sources for the identification data or the identification data itself, and an indication of a voting key. The system is further configured to sign the digital empowerment certificate with an electronic signature of the voter. Moreover, the system is configured to generate a voting message including a vote of the voter. In addition, the system is configured to generate a signature block combining the digital empowerment certificate and the voting message. Furthermore, the system is configured to send the encrypted digital empowerment certificate, the encrypted voting message, and the signature block to the authentication body.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method for supply of data, including generating an empowerment certificate signed with a signing entity's electronic signature. The empowerment certificate includes attributes of a described entity, information identifying the signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate.

Abstract: A method and system. A computer iteratively processes a unique condition digest of at least two condition digests in each iteration of a loop for a sufficient number of iterations to process all condition digests of the at least two condition digests. The processing in each iteration includes concatenating a reference digest with the unique condition digest of the iteration to generate a concatenand and hashing the concatenand to generate a hashed concatenand that serves as the reference digest for the next iteration if the next iteration is performed. Each unique condition digest is a different condition digest in each iteration of the loop. The regenerated reference digest of the last iteration of the loop is a last digest.

Abstract: A method and system for generating a digital signature of a data item. A unique condition digest of at least two condition digests is iteratively processed in each iteration of a loop for a sufficient number of iterations to process all of the condition digests. Each iteration includes concatenating a reference digest with the unique condition digest of the iteration to generate a concatenand and hashing the concatenand to generate a hashed concatenand serving as the reference digest for the next iteration. Each unique condition digest is a different condition digest in each iteration. The regenerated reference digest of the last iteration is a last digest which is encrypted to generate a digital signature block that represents the data item and at least two conditions specified for the digital signature. The digital signature block includes the digital signature. The encrypting includes signing the last digest with the digital signature.

Abstract: A method and system for generating a digital signature of a data item. A unique condition digest of at least two condition digests is iteratively processed in each iteration of a loop for a sufficient number of iterations to process all of the condition digests. Each iteration includes concatenating a reference digest with the unique condition digest of the iteration to generate a concatenand and hashing the concatenand to generate a hashed concatenand serving as the reference digest for the next iteration. Each unique condition digest is a different condition digest in each iteration. The regenerated reference digest of the last iteration is a last digest which is encrypted to generate a digital signature block that represents the data item and at least two conditions specified for the digital signature. The digital signature block includes the digital signature. The encrypting includes signing the last digest with the digital signature.

Abstract: Provided are methods, apparatus and computer programs for generating and using conditional electronic signatures enabling the parties to an online communication or transaction to link conditions unambiguously with signed data items, and enabling verification of the authenticity of the data item and conditions and verification of the identity of the signing party. A data item and one or more conditions are separately hashed, the resulting digests (hash values) are concatenated, and the concatenand is further hashed to produce a final digest. The final digest is encrypted using the private key of a public/private key encryption scheme to produce a conditional digital signature. The data item and conditions can each be verified. Verification includes decrypting the conditional signature and comparing the decrypted result with a separately generated final digest. A solution is also disclosed for propagating information to interested parties when a first is countermanded at a second review.

Abstract: A method for supply of data, including generating an empowerment certificate signed with a signing entity's electronic signature. The empowerment certificate includes attributes of a described entity, information identifying the signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate.

Abstract: A system and a computer program product are disclosed. The system is configured to generate a digital empowerment certificate of a voter. The digital empowerment certificate includes an indication of identification data that uniquely identifies the voter to the authentication body, references to sources for the identification data or the identification data itself, and an indication of a voting key. The system is further configured to sign the digital empowerment certificate with an electronic signature of the voter. Moreover, the system is configured to generate a voting message including a vote of the voter. In addition, the system is configured to generate a signature block combining the digital empowerment certificate and the voting message. Furthermore, the system is configured to send the encrypted digital empowerment certificate, the encrypted voting message, and the signature block to the authentication body.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Abstract: A method for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.