CACKEY_DEBUG_PRINTF("Returning CKR_OK (%i)", CKR_OK);

	return(CKR_OK);
}

CK_DEFINE_FUNCTION(CK_RV, C_Sign)(CK_SESSION_HANDLE hSession, CK_BYTE_PTR pData, CK_ULONG ulDataLen, CK_BYTE_PTR pSignature, CK_ULONG_PTR pulSignatureLen) {
	unsigned long start_sign_bufused;
	CK_RV sign_ret;

	CACKEY_DEBUG_PRINTF("Called.");

	if (!cackey_initialized) {
		CACKEY_DEBUG_PRINTF("Error.  Not initialized.");

		return(CKR_CRYPTOKI_NOT_INITIALIZED);
	}

	if (hSession == 0 || hSession >= (sizeof(cackey_sessions) / sizeof(cackey_sessions[0]))) {
		CACKEY_DEBUG_PRINTF("Error.  Session out of range.");
		
		return(CKR_SESSION_HANDLE_INVALID);
	}

	start_sign_bufused = cackey_sessions[hSession].sign_bufused;

	sign_ret = C_SignUpdate(hSession, pData, ulDataLen);
	if (sign_ret != CKR_OK) {
		CACKEY_DEBUG_PRINTF("Error.  SignUpdate() returned failure (rv = %lu).", (unsigned long) sign_ret);

		return(sign_ret);
	}

	sign_ret = C_SignFinal(hSession, pSignature, pulSignatureLen);
	if (sign_ret != CKR_OK) {
		if (sign_ret == CKR_BUFFER_TOO_SMALL) {
			CACKEY_DEBUG_PRINTF("SignFinal() returned CKR_BUFFER_TOO_SMALL (rv = %lu), undoing C_SignUpdate()", (unsigned long) sign_ret);

			cackey_sessions[hSession].sign_bufused = start_sign_bufused;

			return(sign_ret);
		}

		CACKEY_DEBUG_PRINTF("Error.  SignFinal() returned failure (rv = %lu).", (unsigned long) sign_ret);

		return(sign_ret);
	}

	CACKEY_DEBUG_PRINTF("Returning CKR_OK (%i)", CKR_OK);