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Some crypto related scripts

Last updated: 12.06.2023

Contents

createOpensslCert

Creates .der and .pem ssl keys and certificates in one command, i.e. public key, private key and certificate.

Requirements
Requires an openssl.exe found in the %PATH% or %ProgramFiles%\Git\usr\bin\openssl.exe.

Remark
Somehow, it throws an error, when creating a public key out of a .der private key. Therefor, the default is to create the .pem keys and if needed, convert them to .der with the /c option.

Usage

$ createOpensslCert.bat /n <name> [/a=<algorithm>] [/b=<bits>] [/c] [/h]

Options:

  • -n Base name of the files.
  • -a Algorithm: RSA|ED25519. Default: ED25519.
  • -b Bits for RSA. Default: 4096.
  • -c Additionally convert to .der format.
  • -h Print this.

sha256sum

Calculate sha256 of file.
Wrapper for certutil -hashfile <filename> sha256

Usage

$ sha256sum.bat file [/h]

Options:

  • file The file path to sha256.
  • /h Print help info.