RSA_check_key(3) OpenSSL RSA_check_key(3)NAMERSA_check_key - validate private RSA keys
SYNOPSIS
#include <openssl/rsa.h>
int RSA_check_key(RSA *rsa);
DESCRIPTION
This function validates RSA keys. It checks that p and q are in fact
prime, and that n = p*q.
It also checks that d*e = 1 mod (p-1*q-1), and that dmp1, dmq1 and iqmp
are set correctly or are NULL.
As such, this function can not be used with any arbitrary RSA key
object, even if it is otherwise fit for regular RSA operation. See
NOTES for more information.
RETURN VALUERSA_check_key() returns 1 if rsa is a valid RSA key, and 0 otherwise.
-1 is returned if an error occurs while checking the key.
If the key is invalid or an error occurred, the reason code can be
obtained using ERR_get_error(3).
NOTES
This function does not work on RSA public keys that have only the
modulus and public exponent elements populated. It performs integrity
checks on all the RSA key material, so the RSA key structure must
contain all the private key data too.
SEE ALSOrsa(3), ERR_get_error(3)HISTORYRSA_check() appeared in OpenSSL 0.9.4.
3rd Berkeley Distribution 0.9.6m RSA_check_key(3)