Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/libdigest-sha3-perl-1.04/src/sdf.c
Examining data/libdigest-sha3-perl-1.04/src/sha3.c
Examining data/libdigest-sha3-perl-1.04/src/sha3.h

FINAL RESULTS:

data/libdigest-sha3-perl-1.04/src/sha3.c:394:3:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
		strcat(s->base64, out);
data/libdigest-sha3-perl-1.04/src/sha3.c:397:2:  [4] (buffer) strcat:
  Does not check for buffer overflows when concatenating to destination
  [MS-banned] (CWE-120). Consider using strcat_s, strncat, strlcat, or
  snprintf (warning: strncat is easily misused).
	strcat(s->base64, out);
data/libdigest-sha3-perl-1.04/src/sha3.c:386:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char out[5];
data/libdigest-sha3-perl-1.04/src/sha3.h:92:11:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	unsigned char block[SHA3_MAX_BLOCK_BITS/8];
data/libdigest-sha3-perl-1.04/src/sha3.h:95:11:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	unsigned char digest[SHA3_MAX_DIGEST_BITS/8];
data/libdigest-sha3-perl-1.04/src/sha3.h:97:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char hex[SHA3_MAX_HEX_LEN+1];
data/libdigest-sha3-perl-1.04/src/sha3.h:98:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char base64[SHA3_MAX_BASE64_LEN+1];
data/libdigest-sha3-perl-1.04/src/sdf.c:96:47:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
            (stash && isa_lookup(stash, name, strlen(name), 0) == &sv_yes)

ANALYSIS SUMMARY:

Hits = 8
Lines analyzed = 602 in approximately 0.07 seconds (9198 lines/second)
Physical Source Lines of Code (SLOC) = 489
Hits@level = [0]   0 [1]   1 [2]   5 [3]   0 [4]   2 [5]   0
Hits@level+ = [0+]   8 [1+]   8 [2+]   7 [3+]   2 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 16.3599 [1+] 16.3599 [2+] 14.3149 [3+] 4.08998 [4+] 4.08998 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.