L_DicomGetMutualAuthKeyLengthTLS

#include "ltdic.h"

L_LTDIC_API L_UINT32 L_DicomGetMutualAuthKeyLengthTLS(hNet, cipher)

HDICOMNET hNet;	/* handle to an existing DICOM Network */
L_CIPHERSUITE cipher;	/* ciphersuite */

Returns the effective length (in bits) of the mutual authentication key associated with the specified ciphersuite. This function is available in Medical Suite toolkits.

Parameter	Description
hNet	Handle to an existing DICOM Network. This is the handle returned from the L_DicomCreateNet function.
cipher	Value that represents the current ciphersuite for which to get the length of the mutual authentication key.

Returns

Returns the effective length of the mutual authentication key.

Comments

The usual sizes for a RSA key is 512 and 1024 bits. There is a limitation for import in Europe a RSA key must be at least 768 bits long. There are no known export restrictions. In addition, the length of the mutual authentication key can be found only after a successful call to the L_DicomSetClientCertificateTLS or L_DicomSetServerCertificateTLS function.

Required DLLs and Libraries

LTDIC
LTCRY
LTTLS

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:	L_DicomGetAuthenticationAlgorithmTLS, L_DicomGetIntegrityAlgorithmTLS, L_DicomGetEncryptionAlgorithmTLS, L_DicomGetKeyExchangeAlgorithmTLS, L_DicomGetEncryptKeyLengthTLS
Topics:	DICOM Net: Working with authentication key
	Adding TLS Security to a DICOM Connection
	Negotiating a Ciphersuite
	General Transport Layer Secure (TLS) Information

Example

L_INT DicomGetMutualAuthKeyLengthTLSExample(L_VOID)
{
   HDICOMNET hDicomNet = NULL;
   L_INT nRet;
   // create and initialize pDicomNet
   // . . .
   nRet = L_DicomGetMutualAuthKeyLengthTLS(hDicomNet, TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA);
   L_TCHAR strMsg[128];
   wsprintf(strMsg, TEXT("Mutual authentication key length for TLS_DHE_RSA_WITH_DES_EDE_CBC_SHA is %d"), nRet);
   MessageBox(NULL, strMsg, TEXT(""), MB_OK);
   return DICOM_SUCCESS;
}