Encryption Engine

This is a demo project for recording the implementation of Encryption in C/C++.

Require : openssl1.1.1

evp_digest

Generating digest of message using Openssl EVP.
The program receives arguments to determine which hash methods to use.
usage:

./evpdigest md5
./evpdigest sha256

evp_file_encryption

Encrypt files using Openssl EVP.
Baesd on the work by Amit Kulkarni
interface:

void file_encrypt_decrypt(cipher_params_t *params, FILE *ifp, FILE *ofp)

evp_file_encryption1

Encrypt files using Openssl EVP.
Baesd on the example of www.openssl.org

string_encryption

Encrypt string without Openssl EVP.