big_num.h
资源名称:HookAPI [点击查看]
上传用户:nbcables
上传日期:2007-01-11
资源大小:1243k
文件大小:4k
源码类别:
钩子与API截获
开发平台:
Visual C++
- /* NN.H - header file for NN.C
- */
- /* Type definitions.
- typedef UINT4 NN_DIGIT;
- typedef UINT2 NN_HALF_DIGIT;
- */
- /* Constants.
- Note: MAX_NN_DIGITS is long enough to hold any RSA modulus, plus
- one more digit as required by R_GeneratePEMKeys (for n and phiN,
- whose lengths must be even). All natural numbers have at most
- MAX_NN_DIGITS digits, except for double-length intermediate values
- in NN_Mult (t), NN_ModMult (t), NN_ModInv (w), and NN_Div (c).
- */
- /* Length of digit in bits */
- #define NN_DIGIT_BITS 32
- #define NN_HALF_DIGIT_BITS 16
- /* Length of digit in bytes */
- #define NN_DIGIT_LEN (NN_DIGIT_BITS / 8)
- /* Maximum length in digits */
- #define MAX_NN_DIGITS
- ((MAX_RSA_MODULUS_LEN + NN_DIGIT_LEN - 1) / NN_DIGIT_LEN + 1)
- /* Maximum digits */
- #define MAX_NN_DIGIT 0xffffffff
- #define MAX_NN_HALF_DIGIT 0xffff
- /* Macros.
- */
- #define LOW_HALF(x) ((x) & MAX_NN_HALF_DIGIT)
- #define HIGH_HALF(x) (((x) >> NN_HALF_DIGIT_BITS) & MAX_NN_HALF_DIGIT)
- #define TO_HIGH_HALF(x) (((NN_DIGIT)(x)) << NN_HALF_DIGIT_BITS)
- #define DIGIT_MSB(x) (unsigned int)(((x) >> (NN_DIGIT_BITS - 1)) & 1)
- #define DIGIT_2MSB(x) (unsigned int)(((x) >> (NN_DIGIT_BITS - 2)) & 3)
- /* CONVERSIONS
- NN_Decode (a, digits, b, len) Decodes character string b into a.
- NN_Encode (a, len, b, digits) Encodes a into character string b.
- ASSIGNMENTS
- NN_Assign (a, b, digits) Assigns a = b.
- NN_ASSIGN_DIGIT (a, b, digits) Assigns a = b, where b is a digit.
- NN_AssignZero (a, b, digits) Assigns a = 0.
- NN_Assign2Exp (a, b, digits) Assigns a = 2^b.
- ARITHMETIC OPERATIONS
- NN_Add (a, b, c, digits) Computes a = b + c.
- NN_Sub (a, b, c, digits) Computes a = b - c.
- NN_Mult (a, b, c, digits) Computes a = b * c.
- NN_LShift (a, b, c, digits) Computes a = b * 2^c.
- NN_RShift (a, b, c, digits) Computes a = b / 2^c.
- NN_Div (a, b, c, cDigits, d, dDigits) Computes a = c div d and b = c mod d.
- NUMBER THEORY
- NN_Mod (a, b, bDigits, c, cDigits) Computes a = b mod c.
- NN_ModMult (a, b, c, d, digits) Computes a = b * c mod d.
- NN_ModExp (a, b, c, cDigits, d, dDigits) Computes a = b^c mod d.
- NN_ModInv (a, b, c, digits) Computes a = 1/b mod c.
- NN_Gcd (a, b, c, digits) Computes a = gcd (b, c).
- OTHER OPERATIONS
- NN_EVEN (a, digits) Returns 1 iff a is even.
- NN_Cmp (a, b, digits) Returns sign of a - b.
- NN_EQUAL (a, digits) Returns 1 iff a = b.
- NN_Zero (a, digits) Returns 1 iff a = 0.
- NN_Digits (a, digits) Returns significant length of a in digits.
- NN_Bits (a, digits) Returns significant length of a in bits.
- */
- void NN_Decode PROTO_LIST
- ((NN_DIGIT *, unsigned int, unsigned char *, unsigned int));
- void NN_Encode PROTO_LIST
- ((unsigned char *, unsigned int, NN_DIGIT *, unsigned int));
- void NN_Assign PROTO_LIST ((NN_DIGIT *, NN_DIGIT *, unsigned int));
- void NN_AssignZero PROTO_LIST ((NN_DIGIT *, unsigned int));
- void NN_Assign2Exp PROTO_LIST ((NN_DIGIT *, unsigned int, unsigned int));
- NN_DIGIT NN_Add PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- NN_DIGIT NN_Sub PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- void NN_Mult PROTO_LIST ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- void NN_Div PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int, NN_DIGIT *,
- unsigned int));
- NN_DIGIT NN_LShift PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, unsigned int, unsigned int));
- NN_DIGIT NN_RShift PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, unsigned int, unsigned int));
- void NN_Mod PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, unsigned int, NN_DIGIT *, unsigned int));
- void NN_ModMult PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- void NN_ModExp PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int, NN_DIGIT *,
- unsigned int));
- void NN_ModInv PROTO_LIST
- ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- void NN_Gcd PROTO_LIST ((NN_DIGIT *, NN_DIGIT *, NN_DIGIT *, unsigned int));
- int NN_Cmp PROTO_LIST ((NN_DIGIT *, NN_DIGIT *, unsigned int));
- int NN_Zero PROTO_LIST ((NN_DIGIT *, unsigned int));
- unsigned int NN_Bits PROTO_LIST ((NN_DIGIT *, unsigned int));
- unsigned int NN_Digits PROTO_LIST ((NN_DIGIT *, unsigned int));
- #define NN_ASSIGN_DIGIT(a, b, digits) {NN_AssignZero (a, digits); a[0] = b;}
- #define NN_EQUAL(a, b, digits) (! NN_Cmp (a, b, digits))
- #define NN_EVEN(a, digits) (((digits) == 0) || ! (a[0] & 1))