77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
$NetBSD: patch-lib_hcrypto_libtommath_tommath_superclass.h,v 1.1 2011/09/15 13:01:14 hans Exp $
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--- lib/hcrypto/libtommath/tommath_superclass.h.orig 2011-09-15 09:31:23.191396242 +0200
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+++ lib/hcrypto/libtommath/tommath_superclass.h 2011-09-15 09:32:22.227978670 +0200
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@@ -0,0 +1,72 @@
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+/* super class file for PK algos */
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+
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+/* default ... include all MPI */
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+#define LTM_ALL
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+
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+/* RSA only (does not support DH/DSA/ECC) */
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+/* #define SC_RSA_1 */
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+
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+/* For reference.... On an Athlon64 optimizing for speed...
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+
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+ LTM's mpi.o with all functions [striped] is 142KiB in size.
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+
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+*/
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+
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+/* Works for RSA only, mpi.o is 68KiB */
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+#ifdef SC_RSA_1
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+ #define BN_MP_SHRINK_C
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+ #define BN_MP_LCM_C
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+ #define BN_MP_PRIME_RANDOM_EX_C
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+ #define BN_MP_INVMOD_C
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+ #define BN_MP_GCD_C
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+ #define BN_MP_MOD_C
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+ #define BN_MP_MULMOD_C
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+ #define BN_MP_ADDMOD_C
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+ #define BN_MP_EXPTMOD_C
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+ #define BN_MP_SET_INT_C
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+ #define BN_MP_INIT_MULTI_C
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+ #define BN_MP_CLEAR_MULTI_C
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+ #define BN_MP_UNSIGNED_BIN_SIZE_C
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+ #define BN_MP_TO_UNSIGNED_BIN_C
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+ #define BN_MP_MOD_D_C
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+ #define BN_MP_PRIME_RABIN_MILLER_TRIALS_C
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+ #define BN_REVERSE_C
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+ #define BN_PRIME_TAB_C
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+
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+ /* other modifiers */
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+ #define BN_MP_DIV_SMALL /* Slower division, not critical */
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+
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+ /* here we are on the last pass so we turn things off. The functions classes are still there
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+ * but we remove them specifically from the build. This also invokes tweaks in functions
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+ * like removing support for even moduli, etc...
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+ */
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+#ifdef LTM_LAST
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+ #undef BN_MP_TOOM_MUL_C
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+ #undef BN_MP_TOOM_SQR_C
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+ #undef BN_MP_KARATSUBA_MUL_C
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+ #undef BN_MP_KARATSUBA_SQR_C
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+ #undef BN_MP_REDUCE_C
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+ #undef BN_MP_REDUCE_SETUP_C
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+ #undef BN_MP_DR_IS_MODULUS_C
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+ #undef BN_MP_DR_SETUP_C
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+ #undef BN_MP_DR_REDUCE_C
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+ #undef BN_MP_REDUCE_IS_2K_C
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+ #undef BN_MP_REDUCE_2K_SETUP_C
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+ #undef BN_MP_REDUCE_2K_C
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+ #undef BN_S_MP_EXPTMOD_C
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+ #undef BN_MP_DIV_3_C
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+ #undef BN_S_MP_MUL_HIGH_DIGS_C
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+ #undef BN_FAST_S_MP_MUL_HIGH_DIGS_C
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+ #undef BN_FAST_MP_INVMOD_C
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+
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+ /* To safely undefine these you have to make sure your RSA key won't exceed the Comba threshold
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+ * which is roughly 255 digits [7140 bits for 32-bit machines, 15300 bits for 64-bit machines]
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+ * which means roughly speaking you can handle upto 2536-bit RSA keys with these defined without
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+ * trouble.
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+ */
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+ #undef BN_S_MP_MUL_DIGS_C
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+ #undef BN_S_MP_SQR_C
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+ #undef BN_MP_MONTGOMERY_REDUCE_C
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+#endif
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+
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+#endif
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