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RSA_check_key(3)	     OpenSSL		 RSA_check_key(3)

NAME
       RSA_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.

       The key's public components may not be NULL.

RETURN VALUE
       RSA_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).

SEE ALSO
       rsa(3), err(3)

HISTORY
       RSA_check() appeared in OpenSSL 0.9.4.

16/Aug/2000		      0.9.6				1

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