void CCHashInstance::finish(unsigned char *digest)
{
if (mTruncate == 0) {
CCDigestFinal(mDigest, digest);
} else {
unsigned char fullDigest[CCDigestOutputSize(mDigest)];
CCDigestFinal(mDigest, fullDigest);
memcpy(digest, fullDigest, mTruncate);
}
}
char *
Digest_End(CCDigestRef ctx, char *buf)
{
static const char hex[] = "0123456789abcdef";
uint8_t digest[32]; // SHA256 is the biggest
size_t i, length;
(void)osx_assumes_zero(CCDigestFinal(ctx, digest));
length = CCDigestOutputSize(ctx);
osx_assert(length <= sizeof(digest));
for (i = 0; i < length; i++) {
buf[i+i] = hex[digest[i] >> 4];
buf[i+i+1] = hex[digest[i] & 0x0f];
}
buf[i+i] = '\0';
return buf;
}