The textbook ElGamal implementation is not secure. PyCrypto and some other implementations use the wrong algorithm, which may lead to some information disclosure simply by looking at the encrypted text. For a full description, see https://github.com/dlitz/pycrypto/issues/253
This update includes a fix for this problem backported from pycryptodome.
Updates may require up to 24 hours to propagate to mirrors. If the following command doesn't work, please retry later:
sudo dnf upgrade --refresh --advisory=FEDORA-2018-0c75cc72bc
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