SHA256 implementation

I am trying to program SHA256 implementation from this website: http://bradconte.com/sha256_c in a MSP430f5529 MCU board in Energia IDE.

This is the testcode:

 unsigned char  hash[32];
 SHA256_CTX ctx;
 sha256_init(&ctx);
 sha256_update(&ctx,(unsigned char*)"abc",4);
 sha256_final(&ctx,hash);
 PrintHex(hash);

This function converts the input to hex

void PrintHex(unsigned char * data) 
 {
    char tmp[16];
    for (int i=0; i<32; i++) { 
    sprintf(tmp, "%02x",data[i]); 
    Serial.print(tmp); 
    }
 }

The problem is that the output is always a wrong hash code. I tried this algorithm on my desktop and there it works. Is the implementation not compatible for this board or something? I tried to find other implementations but didn't work out in Energia.