options: Complete the transition to numeric toggles (`#if') For the sake of review, this commit alters only the code; the affiliated comments within the source files also need to be updated, but doing so now would obscure the operational changes that have been made here. * All on/off options have been switched to the numeric `#if' variant; that is the only way to make this `default_options.h.in' thing work in a reasonable manner. * There is now some very minor compile-time checking of the user's choice of options. * NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed. * ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST, and this commit completes that work. * DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option, which was added by the following commit: commit 6e0b539e9ca0b5628c6c5a3d118ad6a2e79e8039 Author: Matt Johnston <[email protected]> Date: Tue May 23 22:29:21 2017 +0800 split out checkpubkey_line() separately It has now been added to `sysoptions.h' and defined as `0' by default. * The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in `default_options.h.in'; it is no longer meant to be set by the user, and is instead left to be defined in `sysoptions.h' (where it was already being defined) as merely the name of the environment variable in question: DROPBEAR_PASSWORD To enable or disable use of that environment variable, the user must now toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'. * The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the path of the sFTP server program is set independently through the usual SFTPSERVER_PATH.

Base64 vectors.  These are the base64 encodings of the strings 00,01,02...NN-1

 0: 
 1: AA==
 2: AAE=
 3: AAEC
 4: AAECAw==
 5: AAECAwQ=
 6: AAECAwQF
 7: AAECAwQFBg==
 8: AAECAwQFBgc=
 9: AAECAwQFBgcI
10: AAECAwQFBgcICQ==
11: AAECAwQFBgcICQo=
12: AAECAwQFBgcICQoL
13: AAECAwQFBgcICQoLDA==
14: AAECAwQFBgcICQoLDA0=
15: AAECAwQFBgcICQoLDA0O
16: AAECAwQFBgcICQoLDA0ODw==
17: AAECAwQFBgcICQoLDA0ODxA=
18: AAECAwQFBgcICQoLDA0ODxAR
19: AAECAwQFBgcICQoLDA0ODxAREg==
20: AAECAwQFBgcICQoLDA0ODxAREhM=
21: AAECAwQFBgcICQoLDA0ODxAREhMU
22: AAECAwQFBgcICQoLDA0ODxAREhMUFQ==
23: AAECAwQFBgcICQoLDA0ODxAREhMUFRY=
24: AAECAwQFBgcICQoLDA0ODxAREhMUFRYX
25: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGA==
26: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBk=
27: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBka
28: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGw==
29: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxw=
30: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwd
31: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHg==
32: AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8=