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INDENTITY-BASED-ENCRYPTION EXTENSIONS FORMED USING MULTIPLE INSTANCES OF AN IDENTITY BASED ENCRYPTION SCHEME
INDENTITY-BASED-ENCRYPTION EXTENSIONS FORMED USING MULTIPLE INSTANCES OF AN IDENTITY BASED ENCRYPTION SCHEME
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机译:基于身份的加密方案的多个实例构成的基于身份的加密扩展
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摘要
IBE extensions to IBE schemes may be provided by creating multiple instances of the same IBE scheme, where each instance has an associated IBE master key and corresponding IBE public parameters. During encryption, an IBE extension identity for each instance of the IBE scheme may be mapped to a corresponding component identity. A message may be encrypted using the component identities to create multiple ciphertexts. The ciphertexts can be combined and sent to a recipient (26). The recipient (26) can request a private key. The private key may be generated by mapping the IBE extension identity into a component identity in each instance, by extracting private keys for each of the component identities, and by combining the private keys into a single IBE extension private key.
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