Attack on RSA-type cryptosystems based on singular cubic curves over Z/nZ
Theoretical Computer Science - Special issue: cryptography
Elliptic Curve Public Key Cryptosystems
Elliptic Curve Public Key Cryptosystems
Fast RSA-type schemes based on singular cubic curves y2 + axy ≡ x3 (mod n)
EUROCRYPT'95 Proceedings of the 14th annual international conference on Theory and application of cryptographic techniques
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This paper analyzes the conjecture made by Koyama regarding partial known plaintext attack on Koyama scheme. According to him, such attack is not possible even if one ordinate of the plaintext pair is known. We have shown that partial known plaintext attack is possible in such case.