![]() ![]() Errors in computation involving one prime factor might produce an invalid signature, potentially similar to the correct signature modulo another prime factor. ![]() The use of the Chinese Remainder Theorem (CRT) in RSA, aimed at faster decryption and reduced public key size, presents a potential vulnerability. The research, led by Keegan Ryan, Kaiwen He, Nadia Heninger, and George Arnold Sullivan, exposes faults in signature computation when using CRT-RSA, potentially allowing observers to calculate private keys from observed signatures. SSH, a widely used cryptographic network protocol for secure communication, relies on RSA, a public-key cryptosystem, for user authentication. ![]() This vulnerability reveals that, under specific circumstances, passive network attackers can extract secret RSA keys from errors occurring during failed SSH connection attempts. A collaborative study by researchers from universities in California and Massachusetts has uncovered a potential vulnerability affecting SSH (Secure Shell) connections. ![]()
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