Add TLS-SRP (RFC 5054) support

net/third_party/nss/ssl/mpi/mpi-priv.h

+/*
+ *  mpi-priv.h  - Private header file for MPI 
+ *  Arbitrary precision integer arithmetic library
+ *
+ *  NOTE WELL: the content of this header file is NOT part of the "public"
+ *  API for the MPI library, and may change at any time.  
+ *  Application programs that use libmpi should NOT include this header file.
+ *
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
+ *
+ * The Initial Developer of the Original Code is
+ * Michael J. Fromberger.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Netscape Communications Corporation
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+/* $Id: mpi-priv.h,v 1.23 2010/05/02 22:36:41 nelson%bolyard.com Exp $ */
+#ifndef _MPI_PRIV_H_
+#define _MPI_PRIV_H_ 1
+
+#include "mpi.h"
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#if MP_DEBUG
+#include <stdio.h>
+
+#define DIAG(T,V) {fprintf(stderr,T);mp_print(V,stderr);fputc('\n',stderr);}
+#else
+#define DIAG(T,V)
+#endif
+
+/* If we aren't using a wired-in logarithm table, we need to include
+   the math library to get the log() function
+ */
+
+/* {{{ s_logv_2[] - log table for 2 in various bases */
+
+#if MP_LOGTAB
+/*
+  A table of the logs of 2 for various bases (the 0 and 1 entries of
+  this table are meaningless and should not be referenced).  
+
+  This table is used to compute output lengths for the mp_toradix()
+  function.  Since a number n in radix r takes up about log_r(n)
+  digits, we estimate the output size by taking the least integer
+  greater than log_r(n), where:
+
+  log_r(n) = log_2(n) * log_r(2)
+
+  This table, therefore, is a table of log_r(2) for 2 <= r <= 36,
+  which are the output bases supported.  
+ */
+
+extern const float s_logv_2[];
+#define LOG_V_2(R)  s_logv_2[(R)]
+
+#else
+
+/* 
+   If MP_LOGTAB is not defined, use the math library to compute the
+   logarithms on the fly.  Otherwise, use the table.
+   Pick which works best for your system.
+ */
+
+#include <math.h>
+#define LOG_V_2(R)  (log(2.0)/log(R))
+
+#endif /* if MP_LOGTAB */
+
+/* }}} */
+
+/* {{{ Digit arithmetic macros */
+
+/*
+  When adding and multiplying digits, the results can be larger than
+  can be contained in an mp_digit.  Thus, an mp_word is used.  These
+  macros mask off the upper and lower digits of the mp_word (the
+  mp_word may be more than 2 mp_digits wide, but we only concern
+  ourselves with the low-order 2 mp_digits)
+ */
+
+#define  CARRYOUT(W)  (mp_digit)((W)>>DIGIT_BIT)
+#define  ACCUM(W)     (mp_digit)(W)
+
+#define MP_MIN(a,b)   (((a) < (b)) ? (a) : (b))
+#define MP_MAX(a,b)   (((a) > (b)) ? (a) : (b))
+#define MP_HOWMANY(a,b) (((a) + (b) - 1)/(b))
+#define MP_ROUNDUP(a,b) (MP_HOWMANY(a,b) * (b))
+
+/* }}} */
+
+/* {{{ Comparison constants */
+
+#define  MP_LT       -1
+#define  MP_EQ        0
+#define  MP_GT        1
+
+/* }}} */
+
+/* {{{ private function declarations */
+
+/* 
+   If MP_MACRO is false, these will be defined as actual functions;
+   otherwise, suitable macro definitions will be used.  This works
+   around the fact that ANSI C89 doesn't support an 'inline' keyword
+   (although I hear C9x will ... about bloody time).  At present, the
+   macro definitions are identical to the function bodies, but they'll
+   expand in place, instead of generating a function call.
+
+   I chose these particular functions to be made into macros because
+   some profiling showed they are called a lot on a typical workload,
+   and yet they are primarily housekeeping.
+ */
+#if MP_MACRO == 0
+ void     s_mp_setz(mp_digit *dp, mp_size count); /* zero digits           */
+ void     s_mp_copy(const mp_digit *sp, mp_digit *dp, mp_size count); /* copy */
+ void    *s_mp_alloc(size_t nb, size_t ni);       /* general allocator     */
+ void     s_mp_free(void *ptr);                   /* general free function */
+extern unsigned long mp_allocs;
+extern unsigned long mp_frees;
+extern unsigned long mp_copies;
+#else
+
+ /* Even if these are defined as macros, we need to respect the settings
+    of the MP_MEMSET and MP_MEMCPY configuration options...
+  */
+ #if MP_MEMSET == 0
+  #define  s_mp_setz(dp, count) \
+       {int ix;for(ix=0;ix<(count);ix++)(dp)[ix]=0;}
+ #else
+  #define  s_mp_setz(dp, count) memset(dp, 0, (count) * sizeof(mp_digit))
+ #endif /* MP_MEMSET */
+
+ #if MP_MEMCPY == 0
+  #define  s_mp_copy(sp, dp, count) \
+       {int ix;for(ix=0;ix<(count);ix++)(dp)[ix]=(sp)[ix];}
+ #else
+  #define  s_mp_copy(sp, dp, count) memcpy(dp, sp, (count) * sizeof(mp_digit))
+ #endif /* MP_MEMCPY */
+
+ #define  s_mp_alloc(nb, ni)  calloc(nb, ni)
+ #define  s_mp_free(ptr) {if(ptr) free(ptr);}
+#endif /* MP_MACRO */
+
+mp_err   s_mp_grow(mp_int *mp, mp_size min);   /* increase allocated size */
+mp_err   s_mp_pad(mp_int *mp, mp_size min);    /* left pad with zeroes    */
+
+#if MP_MACRO == 0
+ void     s_mp_clamp(mp_int *mp);               /* clip leading zeroes     */
+#else
+ #define  s_mp_clamp(mp)\
+  { mp_size used = MP_USED(mp); \
+    while (used > 1 && DIGIT(mp, used - 1) == 0) --used; \
+    MP_USED(mp) = used; \
+  } 
+#endif /* MP_MACRO */
+
+void     s_mp_exch(mp_int *a, mp_int *b);      /* swap a and b in place   */
+
+mp_err   s_mp_lshd(mp_int *mp, mp_size p);     /* left-shift by p digits  */
+void     s_mp_rshd(mp_int *mp, mp_size p);     /* right-shift by p digits */
+mp_err   s_mp_mul_2d(mp_int *mp, mp_digit d);  /* multiply by 2^d in place */
+void     s_mp_div_2d(mp_int *mp, mp_digit d);  /* divide by 2^d in place  */
+void     s_mp_mod_2d(mp_int *mp, mp_digit d);  /* modulo 2^d in place     */
+void     s_mp_div_2(mp_int *mp);               /* divide by 2 in place    */
+mp_err   s_mp_mul_2(mp_int *mp);               /* multiply by 2 in place  */
+mp_err   s_mp_norm(mp_int *a, mp_int *b, mp_digit *pd); 
+                                               /* normalize for division  */
+mp_err   s_mp_add_d(mp_int *mp, mp_digit d);   /* unsigned digit addition */
+mp_err   s_mp_sub_d(mp_int *mp, mp_digit d);   /* unsigned digit subtract */
+mp_err   s_mp_mul_d(mp_int *mp, mp_digit d);   /* unsigned digit multiply */
+mp_err   s_mp_div_d(mp_int *mp, mp_digit d, mp_digit *r);
+                                               /* unsigned digit divide   */
+mp_err   s_mp_reduce(mp_int *x, const mp_int *m, const mp_int *mu);
+                                               /* Barrett reduction       */
+mp_err   s_mp_add(mp_int *a, const mp_int *b); /* magnitude addition      */
+mp_err   s_mp_add_3arg(const mp_int *a, const mp_int *b, mp_int *c);
+mp_err   s_mp_sub(mp_int *a, const mp_int *b); /* magnitude subtract      */
+mp_err   s_mp_sub_3arg(const mp_int *a, const mp_int *b, mp_int *c);
+mp_err   s_mp_add_offset(mp_int *a, mp_int *b, mp_size offset);
+                                               /* a += b * RADIX^offset   */
+mp_err   s_mp_mul(mp_int *a, const mp_int *b); /* magnitude multiply      */
+#if MP_SQUARE
+mp_err   s_mp_sqr(mp_int *a);                  /* magnitude square        */
+#else
+#define  s_mp_sqr(a) s_mp_mul(a, a)
+#endif
+mp_err   s_mp_div(mp_int *rem, mp_int *div, mp_int *quot); /* magnitude div */
+mp_err   s_mp_exptmod(const mp_int *a, const mp_int *b, const mp_int *m, mp_int *c);
+mp_err   s_mp_2expt(mp_int *a, mp_digit k);    /* a = 2^k                 */
+int      s_mp_cmp(const mp_int *a, const mp_int *b); /* magnitude comparison */
+int      s_mp_cmp_d(const mp_int *a, mp_digit d); /* magnitude digit compare */
+int      s_mp_ispow2(const mp_int *v);         /* is v a power of 2?      */
+int      s_mp_ispow2d(mp_digit d);             /* is d a power of 2?      */
+
+int      s_mp_tovalue(char ch, int r);          /* convert ch to value    */
+char     s_mp_todigit(mp_digit val, int r, int low); /* convert val to digit */
+int      s_mp_outlen(int bits, int r);          /* output length in bytes */
+mp_digit s_mp_invmod_radix(mp_digit P);   /* returns (P ** -1) mod RADIX */
+mp_err   s_mp_invmod_odd_m( const mp_int *a, const mp_int *m, mp_int *c);
+mp_err   s_mp_invmod_2d(    const mp_int *a, mp_size k,       mp_int *c);
+mp_err   s_mp_invmod_even_m(const mp_int *a, const mp_int *m, mp_int *c);
+
+#ifdef NSS_USE_COMBA
+
+#define IS_POWER_OF_2(a) ((a) && !((a) & ((a)-1)))
+
+void s_mp_mul_comba_4(const mp_int *A, const mp_int *B, mp_int *C);
+void s_mp_mul_comba_8(const mp_int *A, const mp_int *B, mp_int *C);
+void s_mp_mul_comba_16(const mp_int *A, const mp_int *B, mp_int *C);
+void s_mp_mul_comba_32(const mp_int *A, const mp_int *B, mp_int *C);
+
+void s_mp_sqr_comba_4(const mp_int *A, mp_int *B);
+void s_mp_sqr_comba_8(const mp_int *A, mp_int *B);
+void s_mp_sqr_comba_16(const mp_int *A, mp_int *B);
+void s_mp_sqr_comba_32(const mp_int *A, mp_int *B);
+
+#endif /* end NSS_USE_COMBA */
+
+/* ------ mpv functions, operate on arrays of digits, not on mp_int's ------ */
+#if defined (__OS2__) && defined (__IBMC__)
+#define MPI_ASM_DECL __cdecl
+#else
+#define MPI_ASM_DECL
+#endif
+
+#ifdef MPI_AMD64
+
+mp_digit MPI_ASM_DECL s_mpv_mul_set_vec64(mp_digit*, mp_digit *, mp_size, mp_digit);
+mp_digit MPI_ASM_DECL s_mpv_mul_add_vec64(mp_digit*, const mp_digit*, mp_size, mp_digit);
+
+/* c = a * b */
+#define s_mpv_mul_d(a, a_len, b, c) \
+        ((mp_digit *)c)[a_len] = s_mpv_mul_set_vec64(c, a, a_len, b)
+
+/* c += a * b */
+#define s_mpv_mul_d_add(a, a_len, b, c) \
+        ((mp_digit *)c)[a_len] = s_mpv_mul_add_vec64(c, a, a_len, b)
+
+
+#else
+
+void     MPI_ASM_DECL s_mpv_mul_d(const mp_digit *a, mp_size a_len,
+                                        mp_digit b, mp_digit *c);
+void     MPI_ASM_DECL s_mpv_mul_d_add(const mp_digit *a, mp_size a_len,
+                                            mp_digit b, mp_digit *c);
+
+#endif
+
+void     MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a,
+                                                mp_size a_len, mp_digit b, 
+                                                mp_digit *c);
+void     MPI_ASM_DECL s_mpv_sqr_add_prop(const mp_digit *a,
+                                                mp_size a_len,
+                                                mp_digit *sqrs);
+
+mp_err   MPI_ASM_DECL s_mpv_div_2dx1d(mp_digit Nhi, mp_digit Nlo,
+                            mp_digit divisor, mp_digit *quot, mp_digit *rem);
+
+/* c += a * b * (MP_RADIX ** offset);  */
+#define s_mp_mul_d_add_offset(a, b, c, off) \
+(s_mpv_mul_d_add_prop(MP_DIGITS(a), MP_USED(a), b, MP_DIGITS(c) + off), MP_OKAY)
+
+typedef struct {
+  mp_int       N;       /* modulus N */
+  mp_digit     n0prime; /* n0' = - (n0 ** -1) mod MP_RADIX */
+  mp_size      b;       /* R == 2 ** b,  also b = # significant bits in N */
+} mp_mont_modulus;
+
+mp_err s_mp_mul_mont(const mp_int *a, const mp_int *b, mp_int *c, 
+                       mp_mont_modulus *mmm);
+mp_err s_mp_redc(mp_int *T, mp_mont_modulus *mmm);
+
+/*
+ * s_mpi_getProcessorLineSize() returns the size in bytes of the cache line
+ * if a cache exists, or zero if there is no cache. If more than one
+ * cache line exists, it should return the smallest line size (which is
+ * usually the L1 cache).
+ *
+ * mp_modexp uses this information to make sure that private key information
+ * isn't being leaked through the cache.
+ *
+ * see mpcpucache.c for the implementation.
+ */
+unsigned long s_mpi_getProcessorLineSize();
+
+/* }}} */
+#endif
+
+