# Now test RSA support

saved_LIBS="$LIBS"

AC_MSG_CHECKING([for RSA support])

for WANTS_RSAREF in "" 1 ; do

	if test -z "$WANTS_RSAREF" ; then

		LIBS="$saved_LIBS"

	else

		LIBS="$saved_LIBS -lRSAglue -lrsaref"

	fi

	AC_RUN_IFELSE([AC_LANG_SOURCE([[

#include <string.h>

#include <openssl/rand.h>

#include <openssl/rsa.h>

#include <openssl/bn.h>

#include <openssl/sha.h>

int main(void) 

{

	int num; RSA *key; static unsigned char p_in[] = "blahblah";

	unsigned char c[256], p[256];

	memset(c, 0, sizeof(c)); RAND_add(c, sizeof(c), sizeof(c));

	if ((key=RSA_generate_key(512, 3, NULL, NULL))==NULL) return(1);

	num = RSA_public_encrypt(sizeof(p_in) - 1, p_in, c, key, RSA_PKCS1_PADDING);

	return(-1 == RSA_private_decrypt(num, c, p, key, RSA_PKCS1_PADDING));

}

	]])],[

		rsa_works=1

		break;

	],[],[])

done

LIBS="$saved_LIBS"

# Sanity check OpenSSL headers

AC_MSG_CHECKING([whether OpenSSL's headers match the library])

AC_RUN_IFELSE([AC_LANG_SOURCE([[

#include <string.h>

#include <openssl/opensslv.h>

int main(void) { return(SSLeay() == OPENSSL_VERSION_NUMBER ? 0 : 1); }

	]])],[

		AC_MSG_RESULT(yes)

	],[

		AC_MSG_RESULT(no)

		AC_MSG_ERROR(Your OpenSSL headers do not match your library)

],[])