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2.6 How to enable the FIPS mode

Libgcrypt may be used in a FIPS 140-3 mode. Note, that this does not necessary mean that Libcgrypt is an appoved FIPS 140-3 module. Check the NIST database at to see what versions of Libgcrypt are approved.

Because FIPS 140 has certain restrictions on the use of cryptography which are not always wanted, Libgcrypt needs to be put into FIPS mode explicitly. Four alternative mechanisms are provided to switch Libgcrypt into this mode: