openssl

• Edit /etc/ssl/openssl.cnf:

[openssl_init]
providers = provider_sect

# List of providers to load
[provider_sect]
default = default_sect
legacy = legacy_sect

[default_sect]
activate = 1

[legacy_sect]
activate = 1

• Check:

$ echo -n "foobar" | openssl md4
MD4(stdin)= 547aefd231dcbaac398625718336f143