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Diffstat (limited to 'libtomcrypt/notes/tech0005.txt')
| -rw-r--r-- | libtomcrypt/notes/tech0005.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libtomcrypt/notes/tech0005.txt b/libtomcrypt/notes/tech0005.txt new file mode 100644 index 0000000..8f393d5 --- /dev/null +++ b/libtomcrypt/notes/tech0005.txt @@ -0,0 +1,18 @@ +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? |