If you were to use suPHP, you could allow the script to run under the same user for the script that owns the key.

EDIT:

Based on your clarification (and others comments), it would likely be best to generate a new key specifically for the purpose of your script and give it the permissions of your web user. It is usually best to have a new key set up per user/script.

For more information on why this is best practice, have a look at this and this link.

If you were to use suPHP, you could allow the script to run under the same user for the script that owns the key.

EDIT:

Based on your clarification (and others comments), it would likely be best to generate a new key specifically for the purpose of your script and give it the permissions of your web user. It is usually best to have a new key set up per user/script.

For more information on why this is best practice, have a look at this and this link.

If you were to use suPHP, you could allow the script to run under the same user for the script that owns the key.

If you were to use suPHP, you could allow the script to run under the same user for the script that owns the key.

EDIT:

Based on your clarification (and others comments), it would likely be best to generate a new key specifically for the purpose of your script and give it the permissions of your web user. It is usually best to have a new key set up per user/script.

For more information on why this is best practice, have a look at this and this link.