HI,
I'm trying to encrypt and decrypt data in my PHP scripts using the
openssl API. However, while the encryption seems to work, I cannot
decrypt what I encrypted.
The keys I use have been produced the following way.
openssl req -x509 -nodes -days 365 -newkey rsa:4096 -keyout
example.key -out example.crt openssl x509 -in example.crt -pubkey
-noout > example.pub
I now try the following for encryption
$key = file_get_contents('example.pub');
$flag = openssl_public_encrypt($data,$encrypted,$key);
which seems to work fine.
Now, I try to decrypt as
$flag = openssl_private_decrypt($data,$decrypted,$key);
$key = file_get_contents('example.key');
This will result in
error:0407106B:rsa routines:func(113):reason(107)
error:04065072:rsa routines:func(101):reason(114)
Which according to 'openssl errstr' means
error:0407106B:rsa routines:RSA_padding_check_PKCS1_type_2:block type
is not 02 error:04065072:rsa routines:RSA_EAY_PRIVATE_DECRYPT:padding
check failed
Wht am I doing wrong?
I'm using PHP 4.3.9 which I cannot upgrade because I don't have full
control over the server. :(
I've also tried explicitly setting the padding type but to no avail.
Cheers,
Christian
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