Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 781 insertions, 0 deletions

diff --git a/third_party/heimdal/lib/hcrypto/libtommath/tommath.h b/third_party/heimdal/lib/hcrypto/libtommath/tommath.h
new file mode 100644
index 0000000..e87bb08
--- /dev/null
+++ b/third_party/heimdal/lib/hcrypto/libtommath/tommath.h
@@ -0,0 +1,781 @@
+/* LibTomMath, multiple-precision integer library -- Tom St Denis */
+/* SPDX-License-Identifier: Unlicense */
+
+#ifndef BN_H_
+#define BN_H_
+
+#include <stdint.h>
+#include <stddef.h>
+#include <limits.h>
+
+#ifdef LTM_NO_FILE
+#  warning LTM_NO_FILE has been deprecated, use MP_NO_FILE.
+#  define MP_NO_FILE
+#endif
+
+#ifndef MP_NO_FILE
+#  include <stdio.h>
+#endif
+
+#ifdef MP_8BIT
+#  ifdef _MSC_VER
+#    pragma message("8-bit (MP_8BIT) support is deprecated and will be dropped completely in the next version.")
+#  else
+#    warning "8-bit (MP_8BIT) support is deprecated and will be dropped completely in the next version."
+#  endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* MS Visual C++ doesn't have a 128bit type for words, so fall back to 32bit MPI's (where words are 64bit) */
+#if (defined(_MSC_VER) || defined(__LLP64__) || defined(__e2k__) || defined(__LCC__)) && !defined(MP_64BIT)
+#   define MP_32BIT
+#endif
+
+/* detect 64-bit mode if possible */
+#if defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64) || \
+    defined(__powerpc64__) || defined(__ppc64__) || defined(__PPC64__) || \
+    defined(__s390x__) || defined(__arch64__) || defined(__aarch64__) || \
+    defined(__sparcv9) || defined(__sparc_v9__) || defined(__sparc64__) || \
+    defined(__ia64) || defined(__ia64__) || defined(__itanium__) || defined(_M_IA64) || \
+    defined(__LP64__) || defined(_LP64) || defined(__64BIT__)
+#   if !(defined(MP_64BIT) || defined(MP_32BIT) || defined(MP_16BIT) || defined(MP_8BIT))
+#      if defined(__GNUC__) && !defined(__hppa)
+/* we support 128bit integers only via: __attribute__((mode(TI))) */
+#         define MP_64BIT
+#      else
+/* otherwise we fall back to MP_32BIT even on 64bit platforms */
+#         define MP_32BIT
+#      endif
+#   endif
+#endif
+
+#ifdef MP_DIGIT_BIT
+#   error Defining MP_DIGIT_BIT is disallowed, use MP_8/16/31/32/64BIT
+#endif
+
+/* some default configurations.
+ *
+ * A "mp_digit" must be able to hold MP_DIGIT_BIT + 1 bits
+ * A "mp_word" must be able to hold 2*MP_DIGIT_BIT + 1 bits
+ *
+ * At the very least a mp_digit must be able to hold 7 bits
+ * [any size beyond that is ok provided it doesn't overflow the data type]
+ */
+
+#ifdef MP_8BIT
+typedef uint8_t              mp_digit;
+typedef uint16_t             private_mp_word;
+#   define MP_DIGIT_BIT 7
+#elif defined(MP_16BIT)
+typedef uint16_t             mp_digit;
+typedef uint32_t             private_mp_word;
+#   define MP_DIGIT_BIT 15
+#elif defined(MP_64BIT)
+/* for GCC only on supported platforms */
+typedef uint64_t mp_digit;
+#if defined(__GNUC__)
+typedef unsigned long        private_mp_word __attribute__((mode(TI)));
+#endif
+#   define MP_DIGIT_BIT 60
+#else
+typedef uint32_t             mp_digit;
+typedef uint64_t             private_mp_word;
+#   ifdef MP_31BIT
+/*
+ * This is an extension that uses 31-bit digits.
+ * Please be aware that not all functions support this size, especially s_mp_mul_digs_fast
+ * will be reduced to work on small numbers only:
+ * Up to 8 limbs, 248 bits instead of up to 512 limbs, 15872 bits with MP_28BIT.
+ */
+#      define MP_DIGIT_BIT 31
+#   else
+/* default case is 28-bit digits, defines MP_28BIT as a handy macro to test */
+#      define MP_DIGIT_BIT 28
+#      define MP_28BIT
+#   endif
+#endif
+
+/* mp_word is a private type */
+#define mp_word MP_DEPRECATED_PRAGMA("mp_word has been made private") private_mp_word
+
+#define MP_SIZEOF_MP_DIGIT (MP_DEPRECATED_PRAGMA("MP_SIZEOF_MP_DIGIT has been deprecated, use sizeof (mp_digit)") sizeof (mp_digit))
+
+#define MP_MASK          ((((mp_digit)1)<<((mp_digit)MP_DIGIT_BIT))-((mp_digit)1))
+#define MP_DIGIT_MAX     MP_MASK
+
+/* Primality generation flags */
+#define MP_PRIME_BBS      0x0001 /* BBS style prime */
+#define MP_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
+#define MP_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
+
+#define LTM_PRIME_BBS      (MP_DEPRECATED_PRAGMA("LTM_PRIME_BBS has been deprecated, use MP_PRIME_BBS") MP_PRIME_BBS)
+#define LTM_PRIME_SAFE     (MP_DEPRECATED_PRAGMA("LTM_PRIME_SAFE has been deprecated, use MP_PRIME_SAFE") MP_PRIME_SAFE)
+#define LTM_PRIME_2MSB_ON  (MP_DEPRECATED_PRAGMA("LTM_PRIME_2MSB_ON has been deprecated, use MP_PRIME_2MSB_ON") MP_PRIME_2MSB_ON)
+
+#ifdef MP_USE_ENUMS
+typedef enum {
+   MP_ZPOS = 0,   /* positive */
+   MP_NEG = 1     /* negative */
+} mp_sign;
+typedef enum {
+   MP_LT = -1,    /* less than */
+   MP_EQ = 0,     /* equal */
+   MP_GT = 1      /* greater than */
+} mp_ord;
+typedef enum {
+   MP_NO = 0,
+   MP_YES = 1
+} mp_bool;
+typedef enum {
+   MP_OKAY  = 0,   /* no error */
+   MP_ERR   = -1,  /* unknown error */
+   MP_MEM   = -2,  /* out of mem */
+   MP_VAL   = -3,  /* invalid input */
+   MP_ITER  = -4,  /* maximum iterations reached */
+   MP_BUF   = -5   /* buffer overflow, supplied buffer too small */
+} mp_err;
+typedef enum {
+   MP_LSB_FIRST = -1,
+   MP_MSB_FIRST =  1
+} mp_order;
+typedef enum {
+   MP_LITTLE_ENDIAN  = -1,
+   MP_NATIVE_ENDIAN  =  0,
+   MP_BIG_ENDIAN     =  1
+} mp_endian;
+#else
+typedef int mp_sign;
+#define MP_ZPOS       0   /* positive integer */
+#define MP_NEG        1   /* negative */
+typedef int mp_ord;
+#define MP_LT        -1   /* less than */
+#define MP_EQ         0   /* equal to */
+#define MP_GT         1   /* greater than */
+typedef int mp_bool;
+#define MP_YES        1
+#define MP_NO         0
+typedef int mp_err;
+#define MP_OKAY       0   /* no error */
+#define MP_ERR        -1  /* unknown error */
+#define MP_MEM        -2  /* out of mem */
+#define MP_VAL        -3  /* invalid input */
+#define MP_RANGE      (MP_DEPRECATED_PRAGMA("MP_RANGE has been deprecated in favor of MP_VAL") MP_VAL)
+#define MP_ITER       -4  /* maximum iterations reached */
+#define MP_BUF        -5  /* buffer overflow, supplied buffer too small */
+typedef int mp_order;
+#define MP_LSB_FIRST -1
+#define MP_MSB_FIRST  1
+typedef int mp_endian;
+#define MP_LITTLE_ENDIAN  -1
+#define MP_NATIVE_ENDIAN  0
+#define MP_BIG_ENDIAN     1
+#endif
+
+/* tunable cutoffs */
+
+#ifndef MP_FIXED_CUTOFFS
+extern int
+KARATSUBA_MUL_CUTOFF,
+KARATSUBA_SQR_CUTOFF,
+TOOM_MUL_CUTOFF,
+TOOM_SQR_CUTOFF;
+#endif
+
+/* define this to use lower memory usage routines (exptmods mostly) */
+/* #define MP_LOW_MEM */
+
+/* default precision */
+#ifndef MP_PREC
+#   ifndef MP_LOW_MEM
+#      define PRIVATE_MP_PREC 32        /* default digits of precision */
+#   elif defined(MP_8BIT)
+#      define PRIVATE_MP_PREC 16        /* default digits of precision */
+#   else
+#      define PRIVATE_MP_PREC 8         /* default digits of precision */
+#   endif
+#   define MP_PREC (MP_DEPRECATED_PRAGMA("MP_PREC is an internal macro") PRIVATE_MP_PREC)
+#endif
+
+/* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - BITS_PER_DIGIT*2) */
+#define PRIVATE_MP_WARRAY (int)(1uLL << (((CHAR_BIT * sizeof(private_mp_word)) - (2 * MP_DIGIT_BIT)) + 1))
+#define MP_WARRAY (MP_DEPRECATED_PRAGMA("MP_WARRAY is an internal macro") PRIVATE_MP_WARRAY)
+
+#if defined(__GNUC__) && __GNUC__ >= 4
+#   define MP_NULL_TERMINATED __attribute__((sentinel))
+#else
+#   define MP_NULL_TERMINATED
+#endif
+
+/*
+ * MP_WUR - warn unused result
+ * ---------------------------
+ *
+ * The result of functions annotated with MP_WUR must be
+ * checked and cannot be ignored.
+ *
+ * Most functions in libtommath return an error code.
+ * This error code must be checked in order to prevent crashes or invalid
+ * results.
+ *
+ * If you still want to avoid the error checks for quick and dirty programs
+ * without robustness guarantees, you can `#define MP_WUR` before including
+ * tommath.h, disabling the warnings.
+ */
+#ifndef MP_WUR
+#  if defined(__GNUC__) && __GNUC__ >= 4
+#     define MP_WUR __attribute__((warn_unused_result))
+#  else
+#     define MP_WUR
+#  endif
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 405)
+#  define MP_DEPRECATED(x) __attribute__((deprecated("replaced by " #x)))
+#  define PRIVATE_MP_DEPRECATED_PRAGMA(s) _Pragma(#s)
+#  define MP_DEPRECATED_PRAGMA(s) PRIVATE_MP_DEPRECATED_PRAGMA(GCC warning s)
+#elif defined(_MSC_VER) && _MSC_VER >= 1500
+#  define MP_DEPRECATED(x) __declspec(deprecated("replaced by " #x))
+#  define MP_DEPRECATED_PRAGMA(s) __pragma(message(s))
+#else
+#  define MP_DEPRECATED(s)
+#  define MP_DEPRECATED_PRAGMA(s)
+#endif
+
+#define DIGIT_BIT   (MP_DEPRECATED_PRAGMA("DIGIT_BIT macro is deprecated, MP_DIGIT_BIT instead") MP_DIGIT_BIT)
+#define USED(m)     (MP_DEPRECATED_PRAGMA("USED macro is deprecated, use z->used instead") (m)->used)
+#define DIGIT(m, k) (MP_DEPRECATED_PRAGMA("DIGIT macro is deprecated, use z->dp instead") (m)->dp[(k)])
+#define SIGN(m)     (MP_DEPRECATED_PRAGMA("SIGN macro is deprecated, use z->sign instead") (m)->sign)
+
+/* the infamous mp_int structure */
+typedef struct  {
+   int used, alloc;
+   mp_sign sign;
+   mp_digit *dp;
+} mp_int;
+
+/* callback for mp_prime_random, should fill dst with random bytes and return how many read [upto len] */
+typedef int private_mp_prime_callback(unsigned char *dst, int len, void *dat);
+typedef private_mp_prime_callback MP_DEPRECATED(mp_rand_source) ltm_prime_callback;
+
+/* error code to char* string */
+const char *mp_error_to_string(mp_err code) MP_WUR;
+
+/* ---> init and deinit bignum functions <--- */
+/* init a bignum */
+mp_err mp_init(mp_int *a) MP_WUR;
+
+/* free a bignum */
+void mp_clear(mp_int *a);
+
+/* init a null terminated series of arguments */
+mp_err mp_init_multi(mp_int *mp, ...) MP_NULL_TERMINATED MP_WUR;
+
+/* clear a null terminated series of arguments */
+void mp_clear_multi(mp_int *mp, ...) MP_NULL_TERMINATED;
+
+/* exchange two ints */
+void mp_exch(mp_int *a, mp_int *b);
+
+/* shrink ram required for a bignum */
+mp_err mp_shrink(mp_int *a) MP_WUR;
+
+/* grow an int to a given size */
+mp_err mp_grow(mp_int *a, int size) MP_WUR;
+
+/* init to a given number of digits */
+mp_err mp_init_size(mp_int *a, int size) MP_WUR;
+
+/* ---> Basic Manipulations <--- */
+#define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
+mp_bool mp_iseven(const mp_int *a) MP_WUR;
+mp_bool mp_isodd(const mp_int *a) MP_WUR;
+#define mp_isneg(a)  (((a)->sign != MP_ZPOS) ? MP_YES : MP_NO)
+
+/* set to zero */
+void mp_zero(mp_int *a);
+
+/* get and set doubles */
+double mp_get_double(const mp_int *a) MP_WUR;
+mp_err mp_set_double(mp_int *a, double b) MP_WUR;
+
+/* get integer, set integer and init with integer (int32_t) */
+int32_t mp_get_i32(const mp_int *a) MP_WUR;
+void mp_set_i32(mp_int *a, int32_t b);
+mp_err mp_init_i32(mp_int *a, int32_t b) MP_WUR;
+
+/* get integer, set integer and init with integer, behaves like two complement for negative numbers (uint32_t) */
+#define mp_get_u32(a) ((uint32_t)mp_get_i32(a))
+void mp_set_u32(mp_int *a, uint32_t b);
+mp_err mp_init_u32(mp_int *a, uint32_t b) MP_WUR;
+
+/* get integer, set integer and init with integer (int64_t) */
+int64_t mp_get_i64(const mp_int *a) MP_WUR;
+void mp_set_i64(mp_int *a, int64_t b);
+mp_err mp_init_i64(mp_int *a, int64_t b) MP_WUR;
+
+/* get integer, set integer and init with integer, behaves like two complement for negative numbers (uint64_t) */
+#define mp_get_u64(a) ((uint64_t)mp_get_i64(a))
+void mp_set_u64(mp_int *a, uint64_t b);
+mp_err mp_init_u64(mp_int *a, uint64_t b) MP_WUR;
+
+/* get magnitude */
+uint32_t mp_get_mag_u32(const mp_int *a) MP_WUR;
+uint64_t mp_get_mag_u64(const mp_int *a) MP_WUR;
+unsigned long mp_get_mag_ul(const mp_int *a) MP_WUR;
+unsigned long long mp_get_mag_ull(const mp_int *a) MP_WUR;
+
+/* get integer, set integer (long) */
+long mp_get_l(const mp_int *a) MP_WUR;
+void mp_set_l(mp_int *a, long b);
+mp_err mp_init_l(mp_int *a, long b) MP_WUR;
+
+/* get integer, set integer (unsigned long) */
+#define mp_get_ul(a) ((unsigned long)mp_get_l(a))
+void mp_set_ul(mp_int *a, unsigned long b);
+mp_err mp_init_ul(mp_int *a, unsigned long b) MP_WUR;
+
+/* get integer, set integer (long long) */
+long long mp_get_ll(const mp_int *a) MP_WUR;
+void mp_set_ll(mp_int *a, long long b);
+mp_err mp_init_ll(mp_int *a, long long b) MP_WUR;
+
+/* get integer, set integer (unsigned long long) */
+#define mp_get_ull(a) ((unsigned long long)mp_get_ll(a))
+void mp_set_ull(mp_int *a, unsigned long long b);
+mp_err mp_init_ull(mp_int *a, unsigned long long b) MP_WUR;
+
+/* set to single unsigned digit, up to MP_DIGIT_MAX */
+void mp_set(mp_int *a, mp_digit b);
+mp_err mp_init_set(mp_int *a, mp_digit b) MP_WUR;
+
+/* get integer, set integer and init with integer (deprecated) */
+MP_DEPRECATED(mp_get_mag_u32/mp_get_u32) unsigned long mp_get_int(const mp_int *a) MP_WUR;
+MP_DEPRECATED(mp_get_mag_ul/mp_get_ul) unsigned long mp_get_long(const mp_int *a) MP_WUR;
+MP_DEPRECATED(mp_get_mag_ull/mp_get_ull) unsigned long long mp_get_long_long(const mp_int *a) MP_WUR;
+MP_DEPRECATED(mp_set_ul) mp_err mp_set_int(mp_int *a, unsigned long b);
+MP_DEPRECATED(mp_set_ul) mp_err mp_set_long(mp_int *a, unsigned long b);
+MP_DEPRECATED(mp_set_ull) mp_err mp_set_long_long(mp_int *a, unsigned long long b);
+MP_DEPRECATED(mp_init_ul) mp_err mp_init_set_int(mp_int *a, unsigned long b) MP_WUR;
+
+/* copy, b = a */
+mp_err mp_copy(const mp_int *a, mp_int *b) MP_WUR;
+
+/* inits and copies, a = b */
+mp_err mp_init_copy(mp_int *a, const mp_int *b) MP_WUR;
+
+/* trim unused digits */
+void mp_clamp(mp_int *a);
+
+
+/* export binary data */
+MP_DEPRECATED(mp_pack) mp_err mp_export(void *rop, size_t *countp, int order, size_t size,
+                                        int endian, size_t nails, const mp_int *op) MP_WUR;
+
+/* import binary data */
+MP_DEPRECATED(mp_unpack) mp_err mp_import(mp_int *rop, size_t count, int order,
+      size_t size, int endian, size_t nails,
+      const void *op) MP_WUR;
+
+/* unpack binary data */
+mp_err mp_unpack(mp_int *rop, size_t count, mp_order order, size_t size, mp_endian endian,
+                 size_t nails, const void *op) MP_WUR;
+
+/* pack binary data */
+size_t mp_pack_count(const mp_int *a, size_t nails, size_t size) MP_WUR;
+mp_err mp_pack(void *rop, size_t maxcount, size_t *written, mp_order order, size_t size,
+               mp_endian endian, size_t nails, const mp_int *op) MP_WUR;
+
+/* ---> digit manipulation <--- */
+
+/* right shift by "b" digits */
+void mp_rshd(mp_int *a, int b);
+
+/* left shift by "b" digits */
+mp_err mp_lshd(mp_int *a, int b) MP_WUR;
+
+/* c = a / 2**b, implemented as c = a >> b */
+mp_err mp_div_2d(const mp_int *a, int b, mp_int *c, mp_int *d) MP_WUR;
+
+/* b = a/2 */
+mp_err mp_div_2(const mp_int *a, mp_int *b) MP_WUR;
+
+/* a/3 => 3c + d == a */
+mp_err mp_div_3(const mp_int *a, mp_int *c, mp_digit *d) MP_WUR;
+
+/* c = a * 2**b, implemented as c = a << b */
+mp_err mp_mul_2d(const mp_int *a, int b, mp_int *c) MP_WUR;
+
+/* b = a*2 */
+mp_err mp_mul_2(const mp_int *a, mp_int *b) MP_WUR;
+
+/* c = a mod 2**b */
+mp_err mp_mod_2d(const mp_int *a, int b, mp_int *c) MP_WUR;
+
+/* computes a = 2**b */
+mp_err mp_2expt(mp_int *a, int b) MP_WUR;
+
+/* Counts the number of lsbs which are zero before the first zero bit */
+int mp_cnt_lsb(const mp_int *a) MP_WUR;
+
+/* I Love Earth! */
+
+/* makes a pseudo-random mp_int of a given size */
+mp_err mp_rand(mp_int *a, int digits) MP_WUR;
+/* makes a pseudo-random small int of a given size */
+MP_DEPRECATED(mp_rand) mp_err mp_rand_digit(mp_digit *r) MP_WUR;
+/* use custom random data source instead of source provided the platform */
+void mp_rand_source(mp_err(*source)(void *out, size_t size));
+
+#ifdef MP_PRNG_ENABLE_LTM_RNG
+#  warning MP_PRNG_ENABLE_LTM_RNG has been deprecated, use mp_rand_source instead.
+/* A last resort to provide random data on systems without any of the other
+ * implemented ways to gather entropy.
+ * It is compatible with `rng_get_bytes()` from libtomcrypt so you could
+ * provide that one and then set `ltm_rng = rng_get_bytes;` */
+extern unsigned long (*ltm_rng)(unsigned char *out, unsigned long outlen, void (*callback)(void));
+extern void (*ltm_rng_callback)(void);
+#endif
+
+/* ---> binary operations <--- */
+
+/* Checks the bit at position b and returns MP_YES
+ * if the bit is 1, MP_NO if it is 0 and MP_VAL
+ * in case of error
+ */
+MP_DEPRECATED(s_mp_get_bit) int mp_get_bit(const mp_int *a, int b) MP_WUR;
+
+/* c = a XOR b (two complement) */
+MP_DEPRECATED(mp_xor) mp_err mp_tc_xor(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+mp_err mp_xor(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = a OR b (two complement) */
+MP_DEPRECATED(mp_or) mp_err mp_tc_or(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+mp_err mp_or(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = a AND b (two complement) */
+MP_DEPRECATED(mp_and) mp_err mp_tc_and(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+mp_err mp_and(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* b = ~a (bitwise not, two complement) */
+mp_err mp_complement(const mp_int *a, mp_int *b) MP_WUR;
+
+/* right shift with sign extension */
+MP_DEPRECATED(mp_signed_rsh) mp_err mp_tc_div_2d(const mp_int *a, int b, mp_int *c) MP_WUR;
+mp_err mp_signed_rsh(const mp_int *a, int b, mp_int *c) MP_WUR;
+
+/* ---> Basic arithmetic <--- */
+
+/* b = -a */
+mp_err mp_neg(const mp_int *a, mp_int *b) MP_WUR;
+
+/* b = |a| */
+mp_err mp_abs(const mp_int *a, mp_int *b) MP_WUR;
+
+/* compare a to b */
+mp_ord mp_cmp(const mp_int *a, const mp_int *b) MP_WUR;
+
+/* compare |a| to |b| */
+mp_ord mp_cmp_mag(const mp_int *a, const mp_int *b) MP_WUR;
+
+/* c = a + b */
+mp_err mp_add(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = a - b */
+mp_err mp_sub(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = a * b */
+mp_err mp_mul(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* b = a*a  */
+mp_err mp_sqr(const mp_int *a, mp_int *b) MP_WUR;
+
+/* a/b => cb + d == a */
+mp_err mp_div(const mp_int *a, const mp_int *b, mp_int *c, mp_int *d) MP_WUR;
+
+/* c = a mod b, 0 <= c < b  */
+mp_err mp_mod(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* Increment "a" by one like "a++". Changes input! */
+mp_err mp_incr(mp_int *a) MP_WUR;
+
+/* Decrement "a" by one like "a--". Changes input! */
+mp_err mp_decr(mp_int *a) MP_WUR;
+
+/* ---> single digit functions <--- */
+
+/* compare against a single digit */
+mp_ord mp_cmp_d(const mp_int *a, mp_digit b) MP_WUR;
+
+/* c = a + b */
+mp_err mp_add_d(const mp_int *a, mp_digit b, mp_int *c) MP_WUR;
+
+/* c = a - b */
+mp_err mp_sub_d(const mp_int *a, mp_digit b, mp_int *c) MP_WUR;
+
+/* c = a * b */
+mp_err mp_mul_d(const mp_int *a, mp_digit b, mp_int *c) MP_WUR;
+
+/* a/b => cb + d == a */
+mp_err mp_div_d(const mp_int *a, mp_digit b, mp_int *c, mp_digit *d) MP_WUR;
+
+/* c = a mod b, 0 <= c < b  */
+mp_err mp_mod_d(const mp_int *a, mp_digit b, mp_digit *c) MP_WUR;
+
+/* ---> number theory <--- */
+
+/* d = a + b (mod c) */
+mp_err mp_addmod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d) MP_WUR;
+
+/* d = a - b (mod c) */
+mp_err mp_submod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d) MP_WUR;
+
+/* d = a * b (mod c) */
+mp_err mp_mulmod(const mp_int *a, const mp_int *b, const mp_int *c, mp_int *d) MP_WUR;
+
+/* c = a * a (mod b) */
+mp_err mp_sqrmod(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = 1/a (mod b) */
+mp_err mp_invmod(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* c = (a, b) */
+mp_err mp_gcd(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* produces value such that U1*a + U2*b = U3 */
+mp_err mp_exteuclid(const mp_int *a, const mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3) MP_WUR;
+
+/* c = [a, b] or (a*b)/(a, b) */
+mp_err mp_lcm(const mp_int *a, const mp_int *b, mp_int *c) MP_WUR;
+
+/* finds one of the b'th root of a, such that |c|**b <= |a|
+ *
+ * returns error if a < 0 and b is even
+ */
+mp_err mp_root_u32(const mp_int *a, uint32_t b, mp_int *c) MP_WUR;
+MP_DEPRECATED(mp_root_u32) mp_err mp_n_root(const mp_int *a, mp_digit b, mp_int *c) MP_WUR;
+MP_DEPRECATED(mp_root_u32) mp_err mp_n_root_ex(const mp_int *a, mp_digit b, mp_int *c, int fast) MP_WUR;
+
+/* special sqrt algo */
+mp_err mp_sqrt(const mp_int *arg, mp_int *ret) MP_WUR;
+
+/* special sqrt (mod prime) */
+mp_err mp_sqrtmod_prime(const mp_int *n, const mp_int *prime, mp_int *ret) MP_WUR;
+
+/* is number a square? */
+mp_err mp_is_square(const mp_int *arg, mp_bool *ret) MP_WUR;
+
+/* computes the jacobi c = (a | n) (or Legendre if b is prime)  */
+MP_DEPRECATED(mp_kronecker) mp_err mp_jacobi(const mp_int *a, const mp_int *n, int *c) MP_WUR;
+
+/* computes the Kronecker symbol c = (a | p) (like jacobi() but with {a,p} in Z */
+mp_err mp_kronecker(const mp_int *a, const mp_int *p, int *c) MP_WUR;
+
+/* used to setup the Barrett reduction for a given modulus b */
+mp_err mp_reduce_setup(mp_int *a, const mp_int *b) MP_WUR;
+
+/* Barrett Reduction, computes a (mod b) with a precomputed value c
+ *
+ * Assumes that 0 < x <= m*m, note if 0 > x > -(m*m) then you can merely
+ * compute the reduction as -1 * mp_reduce(mp_abs(x)) [pseudo code].
+ */
+mp_err mp_reduce(mp_int *x, const mp_int *m, const mp_int *mu) MP_WUR;
+
+/* setups the montgomery reduction */
+mp_err mp_montgomery_setup(const mp_int *n, mp_digit *rho) MP_WUR;
+
+/* computes a = B**n mod b without division or multiplication useful for
+ * normalizing numbers in a Montgomery system.
+ */
+mp_err mp_montgomery_calc_normalization(mp_int *a, const mp_int *b) MP_WUR;
+
+/* computes x/R == x (mod N) via Montgomery Reduction */
+mp_err mp_montgomery_reduce(mp_int *x, const mp_int *n, mp_digit rho) MP_WUR;
+
+/* returns 1 if a is a valid DR modulus */
+mp_bool mp_dr_is_modulus(const mp_int *a) MP_WUR;
+
+/* sets the value of "d" required for mp_dr_reduce */
+void mp_dr_setup(const mp_int *a, mp_digit *d);
+
+/* reduces a modulo n using the Diminished Radix method */
+mp_err mp_dr_reduce(mp_int *x, const mp_int *n, mp_digit k) MP_WUR;
+
+/* returns true if a can be reduced with mp_reduce_2k */
+mp_bool mp_reduce_is_2k(const mp_int *a) MP_WUR;
+
+/* determines k value for 2k reduction */
+mp_err mp_reduce_2k_setup(const mp_int *a, mp_digit *d) MP_WUR;
+
+/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */
+mp_err mp_reduce_2k(mp_int *a, const mp_int *n, mp_digit d) MP_WUR;
+
+/* returns true if a can be reduced with mp_reduce_2k_l */
+mp_bool mp_reduce_is_2k_l(const mp_int *a) MP_WUR;
+
+/* determines k value for 2k reduction */
+mp_err mp_reduce_2k_setup_l(const mp_int *a, mp_int *d) MP_WUR;
+
+/* reduces a modulo b where b is of the form 2**p - k [0 <= a] */
+mp_err mp_reduce_2k_l(mp_int *a, const mp_int *n, const mp_int *d) MP_WUR;
+
+/* Y = G**X (mod P) */
+mp_err mp_exptmod(const mp_int *G, const mp_int *X, const mp_int *P, mp_int *Y) MP_WUR;
+
+/* ---> Primes <--- */
+
+/* number of primes */
+#ifdef MP_8BIT
+#  define PRIVATE_MP_PRIME_TAB_SIZE 31
+#else
+#  define PRIVATE_MP_PRIME_TAB_SIZE 256
+#endif
+#define PRIME_SIZE (MP_DEPRECATED_PRAGMA("PRIME_SIZE has been made internal") PRIVATE_MP_PRIME_TAB_SIZE)
+
+/* table of first PRIME_SIZE primes */
+MP_DEPRECATED(internal) extern const mp_digit ltm_prime_tab[PRIVATE_MP_PRIME_TAB_SIZE];
+
+/* result=1 if a is divisible by one of the first PRIME_SIZE primes */
+MP_DEPRECATED(mp_prime_is_prime) mp_err mp_prime_is_divisible(const mp_int *a, mp_bool *result) MP_WUR;
+
+/* performs one Fermat test of "a" using base "b".
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+mp_err mp_prime_fermat(const mp_int *a, const mp_int *b, mp_bool *result) MP_WUR;
+
+/* performs one Miller-Rabin test of "a" using base "b".
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+mp_err mp_prime_miller_rabin(const mp_int *a, const mp_int *b, mp_bool *result) MP_WUR;
+
+/* This gives [for a given bit size] the number of trials required
+ * such that Miller-Rabin gives a prob of failure lower than 2^-96
+ */
+int mp_prime_rabin_miller_trials(int size) MP_WUR;
+
+/* performs one strong Lucas-Selfridge test of "a".
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+mp_err mp_prime_strong_lucas_selfridge(const mp_int *a, mp_bool *result) MP_WUR;
+
+/* performs one Frobenius test of "a" as described by Paul Underwood.
+ * Sets result to 0 if composite or 1 if probable prime
+ */
+mp_err mp_prime_frobenius_underwood(const mp_int *N, mp_bool *result) MP_WUR;
+
+/* performs t random rounds of Miller-Rabin on "a" additional to
+ * bases 2 and 3.  Also performs an initial sieve of trial
+ * division.  Determines if "a" is prime with probability
+ * of error no more than (1/4)**t.
+ * Both a strong Lucas-Selfridge to complete the BPSW test
+ * and a separate Frobenius test are available at compile time.
+ * With t<0 a deterministic test is run for primes up to
+ * 318665857834031151167461. With t<13 (abs(t)-13) additional
+ * tests with sequential small primes are run starting at 43.
+ * Is Fips 186.4 compliant if called with t as computed by
+ * mp_prime_rabin_miller_trials();
+ *
+ * Sets result to 1 if probably prime, 0 otherwise
+ */
+mp_err mp_prime_is_prime(const mp_int *a, int t, mp_bool *result) MP_WUR;
+
+/* finds the next prime after the number "a" using "t" trials
+ * of Miller-Rabin.
+ *
+ * bbs_style = 1 means the prime must be congruent to 3 mod 4
+ */
+mp_err mp_prime_next_prime(mp_int *a, int t, int bbs_style) MP_WUR;
+
+/* makes a truly random prime of a given size (bytes),
+ * call with bbs = 1 if you want it to be congruent to 3 mod 4
+ *
+ * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
+ * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
+ * so it can be NULL
+ *
+ * The prime generated will be larger than 2^(8*size).
+ */
+#define mp_prime_random(a, t, size, bbs, cb, dat) (MP_DEPRECATED_PRAGMA("mp_prime_random has been deprecated, use mp_prime_rand instead") mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?MP_PRIME_BBS:0, cb, dat))
+
+/* makes a truly random prime of a given size (bits),
+ *
+ * Flags are as follows:
+ *
+ *   MP_PRIME_BBS      - make prime congruent to 3 mod 4
+ *   MP_PRIME_SAFE     - make sure (p-1)/2 is prime as well (implies MP_PRIME_BBS)
+ *   MP_PRIME_2MSB_ON  - make the 2nd highest bit one
+ *
+ * You have to supply a callback which fills in a buffer with random bytes.  "dat" is a parameter you can
+ * have passed to the callback (e.g. a state or something).  This function doesn't use "dat" itself
+ * so it can be NULL
+ *
+ */
+MP_DEPRECATED(mp_prime_rand) mp_err mp_prime_random_ex(mp_int *a, int t, int size, int flags,
+      private_mp_prime_callback cb, void *dat) MP_WUR;
+mp_err mp_prime_rand(mp_int *a, int t, int size, int flags) MP_WUR;
+
+/* Integer logarithm to integer base */
+mp_err mp_log_u32(const mp_int *a, uint32_t base, uint32_t *c) MP_WUR;
+
+/* c = a**b */
+mp_err mp_expt_u32(const mp_int *a, uint32_t b, mp_int *c) MP_WUR;
+MP_DEPRECATED(mp_expt_u32) mp_err mp_expt_d(const mp_int *a, mp_digit b, mp_int *c) MP_WUR;
+MP_DEPRECATED(mp_expt_u32) mp_err mp_expt_d_ex(const mp_int *a, mp_digit b, mp_int *c, int fast) MP_WUR;
+
+/* ---> radix conversion <--- */
+int mp_count_bits(const mp_int *a) MP_WUR;
+
+
+MP_DEPRECATED(mp_ubin_size) int mp_unsigned_bin_size(const mp_int *a) MP_WUR;
+MP_DEPRECATED(mp_from_ubin) mp_err mp_read_unsigned_bin(mp_int *a, const unsigned char *b, int c) MP_WUR;
+MP_DEPRECATED(mp_to_ubin) mp_err mp_to_unsigned_bin(const mp_int *a, unsigned char *b) MP_WUR;
+MP_DEPRECATED(mp_to_ubin) mp_err mp_to_unsigned_bin_n(const mp_int *a, unsigned char *b, unsigned long *outlen) MP_WUR;
+
+MP_DEPRECATED(mp_sbin_size) int mp_signed_bin_size(const mp_int *a) MP_WUR;
+MP_DEPRECATED(mp_from_sbin) mp_err mp_read_signed_bin(mp_int *a, const unsigned char *b, int c) MP_WUR;
+MP_DEPRECATED(mp_to_sbin) mp_err mp_to_signed_bin(const mp_int *a,  unsigned char *b) MP_WUR;
+MP_DEPRECATED(mp_to_sbin) mp_err mp_to_signed_bin_n(const mp_int *a, unsigned char *b, unsigned long *outlen) MP_WUR;
+
+size_t mp_ubin_size(const mp_int *a) MP_WUR;
+mp_err mp_from_ubin(mp_int *a, const unsigned char *buf, size_t size) MP_WUR;
+mp_err mp_to_ubin(const mp_int *a, unsigned char *buf, size_t maxlen, size_t *written) MP_WUR;
+
+size_t mp_sbin_size(const mp_int *a) MP_WUR;
+mp_err mp_from_sbin(mp_int *a, const unsigned char *buf, size_t size) MP_WUR;
+mp_err mp_to_sbin(const mp_int *a, unsigned char *buf, size_t maxlen, size_t *written) MP_WUR;
+
+mp_err mp_read_radix(mp_int *a, const char *str, int radix) MP_WUR;
+MP_DEPRECATED(mp_to_radix) mp_err mp_toradix(const mp_int *a, char *str, int radix) MP_WUR;
+MP_DEPRECATED(mp_to_radix) mp_err mp_toradix_n(const mp_int *a, char *str, int radix, int maxlen) MP_WUR;
+mp_err mp_to_radix(const mp_int *a, char *str, size_t maxlen, size_t *written, int radix) MP_WUR;
+mp_err mp_radix_size(const mp_int *a, int radix, int *size) MP_WUR;
+
+#ifndef MP_NO_FILE
+mp_err mp_fread(mp_int *a, int radix, FILE *stream) MP_WUR;
+mp_err mp_fwrite(const mp_int *a, int radix, FILE *stream) MP_WUR;
+#endif
+
+#define mp_read_raw(mp, str, len) (MP_DEPRECATED_PRAGMA("replaced by mp_read_signed_bin") mp_read_signed_bin((mp), (str), (len)))
+#define mp_raw_size(mp)           (MP_DEPRECATED_PRAGMA("replaced by mp_signed_bin_size") mp_signed_bin_size(mp))
+#define mp_toraw(mp, str)         (MP_DEPRECATED_PRAGMA("replaced by mp_to_signed_bin") mp_to_signed_bin((mp), (str)))
+#define mp_read_mag(mp, str, len) (MP_DEPRECATED_PRAGMA("replaced by mp_read_unsigned_bin") mp_read_unsigned_bin((mp), (str), (len))
+#define mp_mag_size(mp)           (MP_DEPRECATED_PRAGMA("replaced by mp_unsigned_bin_size") mp_unsigned_bin_size(mp))
+#define mp_tomag(mp, str)         (MP_DEPRECATED_PRAGMA("replaced by mp_to_unsigned_bin") mp_to_unsigned_bin((mp), (str)))
+
+#define mp_tobinary(M, S)  (MP_DEPRECATED_PRAGMA("replaced by mp_to_binary")  mp_toradix((M), (S), 2))
+#define mp_tooctal(M, S)   (MP_DEPRECATED_PRAGMA("replaced by mp_to_octal")   mp_toradix((M), (S), 8))
+#define mp_todecimal(M, S) (MP_DEPRECATED_PRAGMA("replaced by mp_to_decimal") mp_toradix((M), (S), 10))
+#define mp_tohex(M, S)     (MP_DEPRECATED_PRAGMA("replaced by mp_to_hex")     mp_toradix((M), (S), 16))
+
+#define mp_to_binary(M, S, N)  mp_to_radix((M), (S), (N), NULL, 2)
+#define mp_to_octal(M, S, N)   mp_to_radix((M), (S), (N), NULL, 8)
+#define mp_to_decimal(M, S, N) mp_to_radix((M), (S), (N), NULL, 10)
+#define mp_to_hex(M, S, N)     mp_to_radix((M), (S), (N), NULL, 16)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif