note to openssl_private_encrypt

|Hello, I'd like to add note to openssl_private_encrypt function, but it always alerts it is a spam. I think I handle the math of elementary school to fill out the control questions ;-) I appended the note. JV ======================================================== If you want to encrypt message larger than approx. 200 bytes, you must split message into blocks. Precisly: Let $RSA_KEY_SIZE is size of private key (I have $RSA_KEY_SIZE=256, this is key length of 2048 bits) Let $msg is source message, $msgCrypt is encrypted message by private key This code demonstrate encoding of larger messages: $enclen=$RSA_KEY_SIZE-12; for ($i=0; $i<(int)(strlen($msg)/$enclen); $i++) { $sub=substr($msg,$i*$enclen,$enclen); openssl_private_encrypt($sub, $cryptpart,$privateServer, OPENSSL_PKCS1_PADDING); $msgCrypt=$msgCrypt.$cryptpart; } $sub=substr($msg,$i*$enclen,strlen($msg)%$enclen); openssl_private_encrypt($sub, $cryptpart, $privateServer, OPENSSL_PKCS1_PADDING); $msgCrypt=$msgCrypt.$cryptpart; The magic constant -12 in $enclen definition is according the openssl manual: http://www.openssl.org/docs/crypto/RSA_private_encrypt.html# In public decryption, you should split into $RSA_KEY_SIZE blocks. In public encryption use RSA_PKCS1_OAEP_PADDING and split into $RSA_KEY_SIZE-42, private decryption: $RSA_KEY_SIZE blocks|