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| 2017-10-19 | 2017-10-19 | ||
| no summary (170.146.220.21) (hidden) (untrusted) | Restored revision 1484724611. Undoing revision 1508436868. (martin) (hidden) | ||
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| Versions below 3.3 of [[&openssh|OpenSSH]] and versions below 1.3.4d/1.3.5rc4 of ProFTPD/mod_sftp require SSH-2 RSA signatures to be padded with zero bytes to the same length as the %%RSA%% key modulus. The %%SSH-2%% draft specification says that an unpadded signature MUST be accepted, so this is a bug. A typical symptom of this problem is that WinSCP mysteriously fails %%RSA%% authentication once in every few hundred attempts, and falls back to passwords. In session log file you will typically see this record: | Versions below 3.3 of [[&openssh|OpenSSH]] and versions below 1.3.4d/1.3.5rc4 of ProFTPD/mod_sftp require SSH-2 RSA signatures to be padded with zero bytes to the same length as the %%RSA%% key modulus. The %%SSH-2%% draft specification says that an unpadded signature MUST be accepted, so this is a bug. A typical symptom of this problem is that WinSCP mysteriously fails %%RSA%% authentication once in every few hundred attempts, and falls back to passwords. In session log file you will typically see this record: | ||
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