strongswan/conf/plugins/openssl.opt
Tobias Brunner f556fce16b openssl: Load "legacy" provider in OpenSSL 3 for algorithms like MD4, DES etc.
We still require these algorithms for e.g. EAP-MSCHAPv2, so the option is
enabled, by default.  To use other providers (e.g. fips or even custom
ones), the option can be disabled and the providers to load/activate can
be configured in openssl.cnf.  For instance, the following has the same
effect as enabling the option:

    openssl_conf = openssl_init

    [openssl_init]
    providers = providers

    [providers]
    default = activate
    legacy = activate

    [activate]
    activate = yes
2021-12-08 11:34:13 +01:00

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charon.plugins.openssl.engine_id = pkcs11
ENGINE ID to use in the OpenSSL plugin.
charon.plugins.openssl.fips_mode = 0
Set OpenSSL FIPS mode: disabled(0), enabled(1), Suite B enabled(2).
charon.plugins.openssl.load_legacy = yes
Load the legacy provider in OpenSSL 3+ for algorithms like MD4, DES, or
Blowfish (the first two are required for EAP-MSCHAPv2). If disabled, the
default provider is loaded, or those configured in the OpenSSL config.