What this tool is good for
This tool lets you change the password on an RSA PEM private key, add protection to an unencrypted key, remove the password from an encrypted key, or simply confirm whether the current password is correct.
All processing happens locally in the browser, which is especially helpful when you are handling sensitive private key material.
Typical scenarios
- Leave the old password empty and set a new password to protect an unencrypted key.
- Provide both the old password and a new password to rotate the password.
- Provide the old password and leave the new password empty to remove password protection.
Format notes
- Encrypted private keys usually start with BEGIN ENCRYPTED PRIVATE KEY.
- Unencrypted RSA private keys commonly start with BEGIN RSA PRIVATE KEY.
- If the password is wrong or the key is malformed, the conversion will fail immediately.
Related tools
- RSA Key Pair Generator：Generate RSA public and private key pairs in PEM format
- PEM/XML Key Converter：Convert RSA keys between PEM and XML