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-sha-perl-6.02/src/sdf.c
Examining data/libdigest-sha-perl-6.02/src/sha64bit.c
Examining data/libdigest-sha-perl-6.02/src/sha64bit.h
Examining data/libdigest-sha-perl-6.02/src/sha.h
Examining data/libdigest-sha-perl-6.02/src/sha.c

FINAL RESULTS:

data/libdigest-sha-perl-6.02/src/sha.c:476:3:  [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-sha-perl-6.02/src/sha.c:479:2:  [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-sha-perl-6.02/src/sha.c:468:2:  [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-sha-perl-6.02/src/sha.h:143:11:  [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[SHA_MAX_BLOCK_BITS/8];
data/libdigest-sha-perl-6.02/src/sha.h:147:11:  [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[SHA_MAX_DIGEST_BITS/8];
data/libdigest-sha-perl-6.02/src/sha.h:149:2:  [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[SHA_MAX_HEX_LEN+1];
data/libdigest-sha-perl-6.02/src/sha.h:150:2:  [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[SHA_MAX_BASE64_LEN+1];
data/libdigest-sha-perl-6.02/src/sha.h:157:11:  [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 key[SHA_MAX_BLOCK_BITS/8];
data/libdigest-sha-perl-6.02/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 = 9
Lines analyzed = 943 in approximately 0.08 seconds (11759 lines/second)
Physical Source Lines of Code (SLOC) = 730
Hits@level = [0]   0 [1]   1 [2]   6 [3]   0 [4]   2 [5]   0
Hits@level+ = [0+]   9 [1+]   9 [2+]   8 [3+]   2 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 12.3288 [1+] 12.3288 [2+] 10.9589 [3+] 2.73973 [4+] 2.73973 [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.