Mercurial > dropbear
view notes/tech0005.txt @ 260:e5d119ea4c63 libtomcrypt LTC_DB_0.47
Make the clean target a bit saner
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 06 Dec 2005 17:18:41 +0000 |
parents | 39d5d58461d6 |
children | d5faf4814ddb |
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Tech Note 0005 Minimizing Code Space Tom St Denis Introduction ------------ Tweaking... You can disable whole classes of algorithms on the command line with the LTC_NO_* defines. From there you can manually turn on what you want to enable. The following build with GCC 3.4.3 on an AMD64 box gets you AES, CTR mode, SHA-256, HMAC, Yarrow, full RSA PKCS #1, PKCS #5, ASN.1 DER and MPI in roughly 80KB of code. CFLAGS="-DSC_RSA_1 -DLTC_NO_CIPHERS -DLTC_NO_HASHES -DLTC_NO_PRNGS -DLTC_NO_MACS -DLTC_NO_MODES -DLTC_NO_PK -DRIJNDAEL -DCTR -DSHA256 \ -DHMAC -DYARROW -DMRSA -DMPI -Os -fomit-frame-pointer" make IGNORE_SPEED=1 Neato eh?