===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/signify/zsig.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -c -r1.18 -r1.19
*** src/usr.bin/signify/zsig.c	2019/12/22 06:37:25	1.18
--- src/usr.bin/signify/zsig.c	2023/04/29 10:08:18	1.19
***************
*** 1,4 ****
! /* $OpenBSD: zsig.c,v 1.18 2019/12/22 06:37:25 espie Exp $ */
  /*
   * Copyright (c) 2016 Marc Espie <espie@openbsd.org>
   *
--- 1,4 ----
! /* $OpenBSD: zsig.c,v 1.19 2023/04/29 10:08:18 espie Exp $ */
  /*
   * Copyright (c) 2016 Marc Espie <espie@openbsd.org>
   *
***************
*** 160,165 ****
--- 160,167 ----
  			if (more == 0)
  				break;
  		}
+ 		if (n == 0)
+ 			break;
  		SHA512_256Data(buffer, n, output);
  		if (endsha - sha < SHA512_256_DIGEST_STRING_LENGTH-1)
  			errx(4, "signature truncated");
***************
*** 172,177 ****
--- 174,181 ----
  		if (n != bufsize)
  			break;
  	}
+ 	if (endsha != sha)
+ 		errx(4, "file truncated");
  	free(buffer);
  }