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New menu option to minimize BSSL ROM with only RSA (#6006)

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* New menu option to minimize BSSL ROM with only RSA

Adds a menu option and define to limit BearSSL to older RSA connection
options.  This saves ~45K program memory and can speed up connections
since EC, while more secure, is significantly slower on the chip.
The supported ciphers are identical to the ones that axTLS supported.

Fixes #6005

* Add default SSLFLAGS(blank) to platform.txt

* Fix unused variable warning

* Add clarifying comment to menu items
This commit is contained in:
Earle F. Philhower, III
2019-04-25 11:13:26 -07:00
committed by GitHub
parent 72c21feff6
commit d9b0480f09
5 changed files with 173 additions and 4 deletions
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12
tools/boards.txt.py
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@ -1074,6 +1074,15 @@ macros = {
( '.menu.wipe.all.upload.erase_cmd', 'erase_flash' ),
]),
######################## SSL supported protocols
'ssl_cipher_menu': collections.OrderedDict([
( '.menu.ssl.all', 'All SSL ciphers (most compatible)' ),
( '.menu.ssl.all.build.sslflags', ''),
( '.menu.ssl.basic', 'Basic SSL ciphers (lower ROM use)' ),
( '.menu.ssl.basic.build.sslflags', '-DBEARSSL_SSL_BASIC'),
]),
}
################################################################
@ -1384,6 +1393,7 @@ def all_boards ():
print('menu.led=Builtin Led')
print('menu.wipe=Erase Flash')
print('menu.sdk=Espressif FW')
print('menu.ssl=SSL Support')
print('')
for id in boards:
@ -1397,7 +1407,7 @@ def all_boards ():
print(id + optname + '=' + board['opts'][optname])
# macros
macrolist = [ 'defaults', 'cpufreq_menu', 'vtable_menu', 'exception_menu' ]
macrolist = [ 'defaults', 'cpufreq_menu', 'vtable_menu', 'exception_menu', 'ssl_cipher_menu' ]
if 'macro' in board:
macrolist += board['macro']
if lwip == 2: