Mercurial > dropbear
annotate libtomcrypt/notes/tech0005.txt @ 311:36d21680a9d3
A few more fixups, make sure that variable declarations are the
first thing in a function
| author | Matt Johnston <matt@ucc.asn.au> |
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| date | Sun, 26 Mar 2006 09:26:43 +0000 |
| parents | 1b9e69c058d2 |
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1 Tech Note 0005 |
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2 Minimizing Code Space |
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3 Tom St Denis |
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4 |
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5 Introduction |
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6 ------------ |
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7 |
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8 Tweaking... |
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9 |
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10 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. |
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11 |
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12 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 |
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13 roughly 80KB of code. |
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14 |
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15 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 \ |
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16 -DHMAC -DYARROW -DMRSA -DMPI -Os -fomit-frame-pointer" make IGNORE_SPEED=1 |
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17 |
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18 Neato eh? |