File size: 581 Bytes
c59fd93 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | #include "hash.h"
extern "C" {
#include "sha256/sha256.h"
}
static std::string to_hex(const unsigned char * digest, size_t len) {
static const char hex[] = "0123456789abcdef";
std::string out;
out.reserve(2*len);
for (size_t i = 0; i < len; ++i) {
out += hex[digest[i] >> 4];
out += hex[digest[i] & 0xf];
}
return out;
}
std::string hash_sha256_hex(const void * data, size_t len) {
unsigned char digest[SHA256_DIGEST_SIZE];
sha256_hash(digest, (const unsigned char *) data, len);
return to_hex(digest, SHA256_DIGEST_SIZE);
}
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