1. Fastsum: http://www.fastsum.com/
2. WinMD5Free: http://www.winmd5.com/
3. If you need to calculate CRC you can use this Microsoft tool (FCIV)
Here is a syntax example but you could obviously use a different syntax
Get-ChildItem C:\Scripts, C:\Test, "C:\Documents and Settings\Kenmyer\Desktop" -filter "*.ps1"
If you like to go deeper on MD5 theory you can review wikipedia article:
If you like to go deeper on MD5 theory you can review wikipedia article:
The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. It can still be used as a checksum to verify data integrity, but only against unintentional corruption.
Like most hash functions, MD5 is neither encryption nor encoding. It can be cracked by brute-force attack and suffers from extensive vulnerabilities as detailed in the security section below.
MD5 was designed by Ronald Rivest in 1991 to replace an earlier hash function MD4.[3] The source code in RFC 1321 contains a "by attribution" RSA license. The acronym "MD" stands for "Message Digest."
The security of the MD5 has been severely compromised, with its weaknesses having been exploited in the field, most infamously by the Flame malware in 2012. The CMU Software Engineering Institute considers MD5 essentially "cryptographically broken and unsuitable for further use".[4]