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2016
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crypto
crypto_app.sgml
crypto
The Crypto Application
The purpose of the Crypto application is to provide an Erlang API
to cryptographic functions, see crypto(3).
Note that the API is on a fairly low level and there are some
corresponding API functions available in public_key(3),
on a higher abstraction level, that uses the crypto application in its implementation.
DEPENDENCIES
The current crypto implementation uses nifs to interface
OpenSSLs crypto library and requires OpenSSL package
version 0.9.8 or higher. FIPS mode support requires at least
version 1.0.1 and a FIPS capable OpenSSL installation.
Source releases of OpenSSL can be downloaded from the OpenSSL project home page,
or mirror sites listed there.
CONFIGURATION
The following configuration parameters are defined for the
crypto application. See app(3) for more information about
configuration parameters.
fips_mode = boolean()
-
Specifies whether to run crypto in FIPS mode. This setting
will take effect when the nif module is loaded. If FIPS mode
is requested but not available at run time the nif module and
thus the crypto module will fail to load. This mechanism
prevents the accidental use of non-validated algorithms.