Hash

Using certutil (CMD)

certutil -hashfile file.txt MD5	MD5 hash of a file.
certutil -hashfile file.txt SHA1	SHA1 hash of a file.
certutil -hashfile file.txt SHA256	SHA256 hash of a file.
certutil -hashfile file.txt SHA384	SHA384 hash of a file.
certutil -hashfile file.txt SHA512	SHA512 hash of a file.

ForFiles (CMD)

forfiles /m <file_pattern> /c "cmd /c certutil -hashfile @file SHA1"	Loop through multiple files in directories and compute SHA1 hash for each file.
forfiles /m *.txt /c "cmd /c certutil -hashfile @file SHA1"	Example of computing SHA1 hash for each .txt file in the current directory.

Using Get-FileHash (PowerShell)

Get-FileHash -Path file.txt -Algorithm MD5	Computes the MD5 hash of a specified file.
Get-FileHash -Path file.txt -Algorithm SHA1	Computes the SHA1 hash of a specified file.
Get-FileHash -Path file.txt -Algorithm SHA256	Computes the SHA256 hash of a specified file.
Get-FileHash -Path file.txt -Algorithm SHA384	Computes the SHA384 hash of a specified file.
Get-FileHash -Path file.txt -Algorithm SHA512	Computes the SHA512 hash of a specified file.

Hashing multiple files (PowerShell)

MD5 hash for all .txt files in a directory:

Get-ChildItem -Path C:\path\*.txt | Get-FileHash -Algorithm MD5

SHA256 hash for all .txt files in a directory:

Get-ChildItem -Path C:\path\*.txt | Get-FileHash -Algorithm SHA256

These commands allow you to compute hashes of files using various algorithms, providing a way to verify file integrity or uniqueness in Windows environments.