sha512

Implements the 512 bit Secure Hashing Algorithm 2 in a short number of functions.

Updated to also implement the similar 256 bit version of the Secure Hashing Algorithm.

Code Example

uint8_t msg[] = "abc";

// SHA-512
uint64_t *digest = SHA512Hash(msg, 3);
// Print the digest as a hex string
for (int i = 0; i < HASH_ARRAY_LEN; ++i)
    printf("%016" PRIx64 , digest[i]);
printf("\n");
free(digest);

// SHA-256
uint32_t *digest256 = SHA256Hash(msg, 3);
for (int i = 0; i < SHA256_ARRAY_LEN; ++i)
    printf("%08" PRIx32 , digest256[i]);
printf("\n");

free(digest256);

Motivation

Simply to refamiliarize myself with basic cryptography methods

Building source code

To build the hashing functions as a library only, run:

/path/to/repo> mkdir build && cd build
/path/to/repo/build> cmake -DONLY_LIB=1 .. && make

To build the executable file, run:

/path/to/repo> mkdir build && cd build
/path/to/repo/build> cmake .. && make