The Gcrypt Library is a low-level cryptographic library that provides support for many ciphers and message authentication codes, such as DES, 3DES, AES, Blowfish, SHA-1, SHA-256, and others.
If this library isn’t already installed or available as a package for your platform, you can get it at https://directory.fsf.org/wiki/Libgcrypt.
Part of our GnuTLS package.