diff options
Diffstat (limited to 'extern/verse/dist/v_bignum.h')
| -rw-r--r-- | extern/verse/dist/v_bignum.h | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/extern/verse/dist/v_bignum.h b/extern/verse/dist/v_bignum.h deleted file mode 100644 index 06e58844452..00000000000 --- a/extern/verse/dist/v_bignum.h +++ /dev/null @@ -1,89 +0,0 @@ -/* - * Verse routines for big integer operations. - * Handy in heavy encryption done during connect. -*/ - -#include <limits.h> - -#include "v_randgen.h" - -/* ----------------------------------------------------------------------------------------- */ - -typedef unsigned short VBigDig; /* Type used to hold one digit of a bignum. */ -typedef unsigned int VBigDigs; /* Should hold precisely two digits. */ - -#define V_BIGBITS (CHAR_BIT * sizeof (VBigDig)) - -/* Use this macro to initialize big number variables, like so: - * VBigDig BIGNUM(foo, 128), BIGNUM(bar, 256); - * Creates automatic variables 'foo' of 128 bits, and 'bar' of 256. - * - * Note that 'bits' must be a multiple of V_BIGBITS, completely - * arbitrary number sizes are not supported by this module. -*/ -#define VBIGNUM(n, bits) n[1 + (bits / V_BIGBITS)] = { bits / V_BIGBITS } - -/* ----------------------------------------------------------------------------------------- */ - -/* Import/export numbers from raw bits. The number x must have been allocated - * with the desired number of bits to read/write. -*/ -extern void v_bignum_raw_import(VBigDig *x, const void *bits); -extern void v_bignum_raw_export(const VBigDig *x, void *bits); - -/* Initializers. */ -extern void v_bignum_set_zero(VBigDig *x); -extern void v_bignum_set_one(VBigDig *x); -extern void v_bignum_set_digit(VBigDig *x, VBigDig y); -extern void v_bignum_set_string(VBigDig *x, const char *string); /* Decimal. */ -extern void v_bignum_set_string_hex(VBigDig *x, const char *string); -extern void v_bignum_set_bignum(VBigDig *x, const VBigDig *y); -/* x = <bits> most significant <bits> bits of <y>, starting at <msb>. Right- - * adjusted in x, so that e.g. y=0xcafebabec001 msb=47 bits=16 gives x=0xcafe. -*/ -extern void v_bignum_set_bignum_part(VBigDig *x, const VBigDig *y, - unsigned int msb, unsigned int bits); -extern void v_bignum_set_random(VBigDig *x, VRandGen *gen); - -/* Handy during debugging. */ -extern void v_bignum_print_hex(const VBigDig *x); -extern void v_bignum_print_hex_lf(const VBigDig *x); - -/* Bit operators. */ -extern void v_bignum_not(VBigDig *x); -extern int v_bignum_bit_test(const VBigDig *x, unsigned int bit); -extern void v_bignum_bit_set(VBigDig *x, unsigned int bit); -extern int v_bignum_bit_msb(const VBigDig *x); -extern int v_bignum_bit_size(const VBigDig *x); -extern void v_bignum_bit_shift_left(VBigDig *x, unsigned int count); -extern void v_bignum_bit_shift_left_1(VBigDig *x); -extern void v_bignum_bit_shift_right(VBigDig *x, unsigned int count); - -/* Comparators. */ -extern int v_bignum_eq_zero(const VBigDig *x); /* x == 0. */ -extern int v_bignum_eq_one(const VBigDig *x); /* x == 1. */ -extern int v_bignum_eq(const VBigDig *x, const VBigDig *y); /* x == y. */ -extern int v_bignum_gte(const VBigDig *x, const VBigDig *y); /* x >= y. */ - -/* Number vs single-digit arithmetic. */ -extern void v_bignum_add_digit(VBigDig *x, VBigDig y); /* x += y. */ -extern void v_bignum_sub_digit(VBigDig *x, VBigDig y); /* x -= y. */ -extern void v_bignum_mul_digit(VBigDig *x, VBigDig y); /* x *= y. */ - -/* Arithmetic. */ -extern void v_bignum_add(VBigDig *x, const VBigDig *y); /* x += y. */ -extern void v_bignum_sub(VBigDig *x, const VBigDig *y); /* x -= y. */ -extern void v_bignum_mul(VBigDig *x, const VBigDig *y); /* x *= y. */ -extern void v_bignum_div(VBigDig *x, const VBigDig *y, VBigDig *remainder); -extern void v_bignum_mod(VBigDig *x, const VBigDig *y); /* x %= y. */ - -/* Barrett reducer for fast x % m computation. Requires precalcing step. */ -extern const VBigDig * v_bignum_reduce_begin(const VBigDig *m); -extern void v_bignum_reduce(VBigDig *x, const VBigDig *m, const VBigDig *mu); -extern void v_bignum_reduce_end(const VBigDig *mu); - -/* Compute x *= x, assuming x only uses half of its actual size. */ -extern void v_bignum_square_half(VBigDig *x); - -/* Compute pow(x, y, n) == (x raised to the y:th power) modulo n. */ -extern void v_bignum_pow_mod(VBigDig *x, const VBigDig *y, const VBigDig *n); |