CAJ | 학술논문

在不降低安全性的情况下,对一种公钥概率加密体制中的一个单向陷门置换进行改进,证明其体制安全性,并改进该单向陷门置换在数字签名中的应用,对其安全性和效率进行了分析.结果表明,改进后的概率加密体制中的加、解密效率有了明显提高.
재불강저안전성적정황하,대일충공약개솔가밀체제중적일개단향함문치환진행개진,증명기체제안전성,병개진해단향함문치환재수자첨명중적응용,대기안전성화효솔진행료분석.결과표명,개진후적개솔가밀체제중적가、해밀효솔유료명현제고.
Without lowering the security, this paper improves an one-way trapdoor permutation in a public-key encryption scheme, and proves the security of the new scheme. It improves a digital signature which is the application of this one-way trapdoor permutation, and analyses its security and efficiency. Result shows that the efficiency of encryption and decryption of the new scheme is markedly improved.