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/* sha1.c - copied from
/usr/share/doc/libnettle-dev/examples/sha-example.c
*/
#include "rdup.h"
#ifdef HAVE_LIBNETTLE
#include <nettle/sha.h>
#endif /* HAVE_LIBNETTLE */
#ifndef HAVE_LIBNETTLE
int
sha1_stream( __attribute__((unused)) FILE *f, __attribute__((unused)) unsigned char *digest)
#else
int
sha1_stream(FILE *f, unsigned char *digest)
#endif
{
#ifdef HAVE_LIBNETTLE
struct sha1_ctx ctx;
uint8_t buffer[SHA1_DIGEST_SIZE];
sha1_init(&ctx);
for (;;)
{
guint done = fread(buffer, 1, sizeof(buffer), f);
sha1_update(&ctx, done, buffer);
if (done < sizeof(buffer))
break;
}
if (ferror(f))
return -1;
sha1_digest(&ctx, SHA1_DIGEST_SIZE, digest);
#endif /* HAVE_LIBNETTLE */
return 0;
}
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