Research Article
Efficient Lattice-Based Signcryption in Standard Model
Input: | Offline phase: | (i) Trapdoor matrix ; | (ii) Partial parity-check matrix ; | (iii) Positive definite , for example, any . | Online phase: | (i) Invertible tag defining ; | (ii) Syndrome . | Output: | A vector , which is statistically close to . | Offline phase: | (1) Compute , choose vector ; | (2) Parse where , . Compute and ; | Online phase: | (3) Compute ; | (4) Choose by calling SampleD see Algorithm 3; | (5) Return . |
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