论文信息 - How to Forge a Time-Stamp Which Adobe's Acrobat Accepts

How to Forge a Time-Stamp Which Adobe's Acrobat Accepts

This paper shows how to forge a time-stamp which the latest version of Adobe's Acrobat and Acrobat Reader accept improperly. The target signature algorithm is RSASSA-PKCS1-v1 5 with a 1024-bit public composite and the public key e = 3, and our construction is based on Bleichenbacher's forgery attack presented in CRYPTO 2006. Since the original attack is not able to forge with these parameters, we used an extended attack described in this paper. Numerical examples of the forged signatures and times-stamp are also provided.

Masahiko Takenaka | Takeshi Shimoyama | Tetsuya Izu

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[4] Daniel Bleichenbacher,et al. Chosen Ciphertext Attacks Against Protocols Based on the RSA Encryption Standard PKCS #1 , 1998, CRYPTO.