-/*
- * Reads a passphrase from /dev/tty with echo turned off. Returns the
- * passphrase (allocated with xmalloc). Exits if EOF is encountered. If
- * from_stdin is true, the passphrase will be read from stdin instead.
- */
-char *read_passphrase(char *prompt, int from_stdin);
+#define RP_ECHO 0x0001
+#define RP_ALLOW_STDIN 0x0002
+
+char *read_passphrase(const char *, int);