SHA256.cpp

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#include <string>
#include <vector>
 
#include <cstring>
 
#include <tdme/tdme.h>
#include <ext/sha256/sha256.h>
#include <tdme/utilities/SHA256.h>
 
using std::string;
using std::vector;
 
void tdme::utilities::SHA256::encode(const string& decodedString, string& encodedString) {
    unsigned char digest[::SHA256::DIGEST_SIZE];
    memset(digest, 0, ::SHA256::DIGEST_SIZE);
 
    auto ctx = ::SHA256();
    ctx.init();
    ctx.update((const uint8_t*)decodedString.c_str(), decodedString.size());
    ctx.final(digest);
 
    char buf[2 * ::SHA256::DIGEST_SIZE + 1];
    buf[2 * ::SHA256::DIGEST_SIZE] = 0;
    for (int i = 0; i < ::SHA256::DIGEST_SIZE; i++) sprintf(buf + i * 2, "%02x", digest[i]);
    encodedString = string(buf);
}
 
void tdme::utilities::SHA256::encode(const vector<uint8_t>& decodedData, string& encodedString) {
    unsigned char digest[::SHA256::DIGEST_SIZE];
    memset(digest, 0, ::SHA256::DIGEST_SIZE);
 
    auto ctx = ::SHA256();
    ctx.init();
    ctx.update((const uint8_t*)decodedData.data(), decodedData.size());
    ctx.final(digest);
 
    char buf[2 * ::SHA256::DIGEST_SIZE + 1];
    buf[2 * ::SHA256::DIGEST_SIZE] = 0;
    for (int i = 0; i < ::SHA256::DIGEST_SIZE; i++) sprintf(buf + i * 2, "%02x", digest[i]);
    encodedString = string(buf);
}