I've meant
Again, it's a public key, that's why you cannot load it. You need a private key. Private keys typically have
.cer in my previous post (the .crt was a typo, though they are interchangeable).
Again, it's a public key, that's why you cannot load it. You need a private key. Private keys typically have
.pfx, .p12, .key or .pem extensions (though some files with these extension may contain a public key only).