http://www.askyb.com/cpp/openssl-sha256-hashing-example-in-cpp/
OpenSSL SHA256 Hashing Example in C++
This tutorial will guide you on how to hash a string by using OpenSSL’s SHA256 hash function. This tutorial will create two C++ example files which will compile and run in Ubuntu environment.
1. Here are the openssl SHA256 sample source code.
Example #1: sha256_sample1.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main()
{
unsigned char digest[SHA256_DIGEST_LENGTH];
char string[] = "hello world";
SHA256((unsigned char*)&string, strlen(string), (unsigned char*)&digest);
char mdString[SHA256_DIGEST_LENGTH*2+1];
for(int i = 0; i < SHA256_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA256 digest: %s\n", mdString);
return 0;
}
Example #2: sha256_sample2.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main() {
unsigned char digest[SHA256_DIGEST_LENGTH];
const char* string = "hello world";
SHA256_CTX ctx;
SHA256_Init(&ctx);
SHA256_Update(&ctx, string, strlen(string));
SHA256_Final(digest, &ctx);
char mdString[SHA256_DIGEST_LENGTH*2+1];
for (int i = 0; i < SHA256_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA256 digest: %s\n", mdString);
return 0;
}
2. Let’s try to compile both sample cpp files and you should observe the following output screenshot.
~$ gcc sha256_sample1.cpp -o sample1 -lcrypto
~$ ./sample1
SHA256 digest: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
~$ gcc sha256_sample2.cpp -o sample2 -lcrypto
~$ ./sample2
SHA256 digest: b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
Note: -lcrypto will include the crypto library from openssl
http://www.askyb.com/cpp/openssl-sha512-hashing-example-in-cpp/
OpenSSL SHA512 Hashing Example in C++
This tutorial will guide you on how to hash a string by using OpenSSL’s SHA512 hash function. This tutorial will create two C++ example files which will compile and run in Ubuntu environment.
1. Here are the openssl SHA512 sample source code.
Example #1: sha512_sample1.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main()
{
unsigned char digest[SHA512_DIGEST_LENGTH];
char string[] = "hello world";
SHA512((unsigned char*)&string, strlen(string), (unsigned char*)&digest);
char mdString[SHA512_DIGEST_LENGTH*2+1];
for(int i = 0; i < SHA512_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA512 digest: %s\n", mdString);
return 0;
}
Example #2: sha512_sample2.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main() {
unsigned char digest[SHA512_DIGEST_LENGTH];
const char* string = "hello world";
SHA512_CTX ctx;
SHA512_Init(&ctx);
SHA512_Update(&ctx, string, strlen(string));
SHA512_Final(digest, &ctx);
char mdString[SHA512_DIGEST_LENGTH*2+1];
for (int i = 0; i < SHA512_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA512 digest: %s\n", mdString);
return 0;
}
2. Let’s try to compile both sample cpp files and you should observe the following output screenshot.
~$ gcc sha512_sample1.cpp -o sample1 -lcrypto
~$ ./sample1
SHA512 digest: 309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
~$ gcc sha512_sample2.cpp -o sample2 -lcrypto
~$ ./sample2
SHA512 digest: 309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
Note: -lcrypto will include the crypto library from openssl
http://www.askyb.com/cpp/openssl-sha384-hashing-example-in-cpp/
OpenSSL SHA384 Hashing Example in C++
This tutorial will guide you on how to hash a string by using OpenSSL’s SHA384 hash function. This tutorial will create two C++ example files which will compile and run in Ubuntu environment.
1. Here are the openssl SHA384 sample source code.
Example #1: sha384_sample1.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main()
{
unsigned char digest[SHA384_DIGEST_LENGTH];
char string[] = "hello world";
SHA384((unsigned char*)&string, strlen(string), (unsigned char*)&digest);
char mdString[SHA384_DIGEST_LENGTH*2+1];
for(int i = 0; i < SHA384_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA384 digest: %s\n", mdString);
return 0;
}
Example #2: sha384_sample2.cpp
#include <stdio.h>
#include <string.h>
#include <openssl/sha.h>
int main() {
unsigned char digest[SHA512_DIGEST_LENGTH];
const char* string = "hello world";
SHA512_CTX ctx;
SHA384_Init(&ctx);
SHA384_Update(&ctx, string, strlen(string));
SHA384_Final(digest, &ctx);
char mdString[SHA384_DIGEST_LENGTH*2+1];
for (int i = 0; i < SHA384_DIGEST_LENGTH; i++)
sprintf(&mdString[i*2], "%02x", (unsigned int)digest[i]);
printf("SHA384 digest: %s\n", mdString);
return 0;
}
2. Let’s try to compile both sample cpp files and you should observe the following output screenshot.
~$ gcc sha384_sample1.cpp -o sample1 -lcrypto
~$ ./sample1
SHA384 digest: fdbd8e75a67f29f701a4e040385e2e23986303ea10239211af907fcbb83578b3e417cb71ce646efd0819dd8c088de1bd
~$ gcc sha384_sample2.cpp -o sample2 -lcrypto
~$ ./sample2
SHA384 digest: fdbd8e75a67f29f701a4e040385e2e23986303ea10239211af907fcbb83578b3e417cb71ce646efd0819dd8c088de1bd
Note: -lcrypto will include the crypto library from openssl
