mbed TLS v2.14.1

bignum.h
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1
6 /*
7 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
8 * SPDX-License-Identifier: Apache-2.0
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
11 * not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 *
22 * This file is part of mbed TLS (https://tls.mbed.org)
23 */
24 #ifndef MBEDTLS_BIGNUM_H
25 #define MBEDTLS_BIGNUM_H
26
27 #if !defined(MBEDTLS_CONFIG_FILE)
28 #include "config.h"
29 #else
30 #include MBEDTLS_CONFIG_FILE
31 #endif
32
33 #include <stddef.h>
34 #include <stdint.h>
35
36 #if defined(MBEDTLS_FS_IO)
37 #include <stdio.h>
38 #endif
39
40 #define MBEDTLS_ERR_MPI_FILE_IO_ERROR -0x0002
41 #define MBEDTLS_ERR_MPI_BAD_INPUT_DATA -0x0004
42 #define MBEDTLS_ERR_MPI_INVALID_CHARACTER -0x0006
43 #define MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL -0x0008
44 #define MBEDTLS_ERR_MPI_NEGATIVE_VALUE -0x000A
45 #define MBEDTLS_ERR_MPI_DIVISION_BY_ZERO -0x000C
46 #define MBEDTLS_ERR_MPI_NOT_ACCEPTABLE -0x000E
47 #define MBEDTLS_ERR_MPI_ALLOC_FAILED -0x0010
49 #define MBEDTLS_MPI_CHK(f) do { if( ( ret = f ) != 0 ) goto cleanup; } while( 0 )
50
51 /*
52 * Maximum size MPIs are allowed to grow to in number of limbs.
53 */
54 #define MBEDTLS_MPI_MAX_LIMBS 10000
55
56 #if !defined(MBEDTLS_MPI_WINDOW_SIZE)
57 /*
58 * Maximum window size used for modular exponentiation. Default: 6
59 * Minimum value: 1. Maximum value: 6.
60 *
61 * Result is an array of ( 2 << MBEDTLS_MPI_WINDOW_SIZE ) MPIs used
62 * for the sliding window calculation. (So 64 by default)
63 *
64 * Reduction in size, reduces speed.
65 */
66 #define MBEDTLS_MPI_WINDOW_SIZE 6
67 #endif /* !MBEDTLS_MPI_WINDOW_SIZE */
68
69 #if !defined(MBEDTLS_MPI_MAX_SIZE)
70 /*
71 * Maximum size of MPIs allowed in bits and bytes for user-MPIs.
72 * ( Default: 512 bytes => 4096 bits, Maximum tested: 2048 bytes => 16384 bits )
73 *
74 * Note: Calculations can temporarily result in larger MPIs. So the number
75 * of limbs required (MBEDTLS_MPI_MAX_LIMBS) is higher.
76 */
77 #define MBEDTLS_MPI_MAX_SIZE 1024
78 #endif /* !MBEDTLS_MPI_MAX_SIZE */
79
80 #define MBEDTLS_MPI_MAX_BITS ( 8 * MBEDTLS_MPI_MAX_SIZE )
82 /*
83 * When reading from files with mbedtls_mpi_read_file() and writing to files with
84 * mbedtls_mpi_write_file() the buffer should have space
85 * for a (short) label, the MPI (in the provided radix), the newline
86 * characters and the '\0'.
87 *
88 * By default we assume at least a 10 char label, a minimum radix of 10
89 * (decimal) and a maximum of 4096 bit numbers (1234 decimal chars).
90 * Autosized at compile time for at least a 10 char label, a minimum radix
91 * of 10 (decimal) for a number of MBEDTLS_MPI_MAX_BITS size.
92 *
93 * This used to be statically sized to 1250 for a maximum of 4096 bit
94 * numbers (1234 decimal chars).
95 *
96 * Calculate using the formula:
97 * MBEDTLS_MPI_RW_BUFFER_SIZE = ceil(MBEDTLS_MPI_MAX_BITS / ln(10) * ln(2)) +
98 * LabelSize + 6
99 */
100 #define MBEDTLS_MPI_MAX_BITS_SCALE100 ( 100 * MBEDTLS_MPI_MAX_BITS )
101 #define MBEDTLS_LN_2_DIV_LN_10_SCALE100 332
102 #define MBEDTLS_MPI_RW_BUFFER_SIZE ( ((MBEDTLS_MPI_MAX_BITS_SCALE100 + MBEDTLS_LN_2_DIV_LN_10_SCALE100 - 1) / MBEDTLS_LN_2_DIV_LN_10_SCALE100) + 10 + 6 )
103
104 /*
105 * Define the base integer type, architecture-wise.
106 *
107 * 32 or 64-bit integer types can be forced regardless of the underlying
108 * architecture by defining MBEDTLS_HAVE_INT32 or MBEDTLS_HAVE_INT64
109 * respectively and undefining MBEDTLS_HAVE_ASM.
110 *
111 * Double-width integers (e.g. 128-bit in 64-bit architectures) can be
112 * disabled by defining MBEDTLS_NO_UDBL_DIVISION.
113 */
114 #if !defined(MBEDTLS_HAVE_INT32)
115 #if defined(_MSC_VER) && defined(_M_AMD64)
116 /* Always choose 64-bit when using MSC */
117 #if !defined(MBEDTLS_HAVE_INT64)
118 #define MBEDTLS_HAVE_INT64
119 #endif /* !MBEDTLS_HAVE_INT64 */
120 typedef int64_t mbedtls_mpi_sint;
121 typedef uint64_t mbedtls_mpi_uint;
122 #elif defined(__GNUC__) && ( \
123 defined(__amd64__) || defined(__x86_64__) || \
124 defined(__ppc64__) || defined(__powerpc64__) || \
125 defined(__ia64__) || defined(__alpha__) || \
126 ( defined(__sparc__) && defined(__arch64__) ) || \
127 defined(__s390x__) || defined(__mips64) )
128 #if !defined(MBEDTLS_HAVE_INT64)
129 #define MBEDTLS_HAVE_INT64
130 #endif /* MBEDTLS_HAVE_INT64 */
131 typedef int64_t mbedtls_mpi_sint;
132 typedef uint64_t mbedtls_mpi_uint;
133 #if !defined(MBEDTLS_NO_UDBL_DIVISION)
134 /* mbedtls_t_udbl defined as 128-bit unsigned int */
135 typedef unsigned int mbedtls_t_udbl __attribute__((mode(TI)));
136 #define MBEDTLS_HAVE_UDBL
137 #endif /* !MBEDTLS_NO_UDBL_DIVISION */
138 #elif defined(__ARMCC_VERSION) && defined(__aarch64__)
139 /*
140 * __ARMCC_VERSION is defined for both armcc and armclang and
141 * __aarch64__ is only defined by armclang when compiling 64-bit code
142 */
143 #if !defined(MBEDTLS_HAVE_INT64)
144 #define MBEDTLS_HAVE_INT64
145 #endif /* !MBEDTLS_HAVE_INT64 */
146 typedef int64_t mbedtls_mpi_sint;
147 typedef uint64_t mbedtls_mpi_uint;
148 #if !defined(MBEDTLS_NO_UDBL_DIVISION)
149 /* mbedtls_t_udbl defined as 128-bit unsigned int */
150 typedef __uint128_t mbedtls_t_udbl;
151 #define MBEDTLS_HAVE_UDBL
152 #endif /* !MBEDTLS_NO_UDBL_DIVISION */
153 #elif defined(MBEDTLS_HAVE_INT64)
154 /* Force 64-bit integers with unknown compiler */
155 typedef int64_t mbedtls_mpi_sint;
156 typedef uint64_t mbedtls_mpi_uint;
157 #endif
158 #endif /* !MBEDTLS_HAVE_INT32 */
159
160 #if !defined(MBEDTLS_HAVE_INT64)
161 /* Default to 32-bit compilation */
162 #if !defined(MBEDTLS_HAVE_INT32)
163 #define MBEDTLS_HAVE_INT32
164 #endif /* !MBEDTLS_HAVE_INT32 */
165 typedef int32_t mbedtls_mpi_sint;
166 typedef uint32_t mbedtls_mpi_uint;
167 #if !defined(MBEDTLS_NO_UDBL_DIVISION)
168 typedef uint64_t mbedtls_t_udbl;
169 #define MBEDTLS_HAVE_UDBL
170 #endif /* !MBEDTLS_NO_UDBL_DIVISION */
171 #endif /* !MBEDTLS_HAVE_INT64 */
172
173 #ifdef __cplusplus
174 extern "C" {
175 #endif
176
180 typedef struct mbedtls_mpi
181 {
182 int s;
183 size_t n;
184 mbedtls_mpi_uint *p;
185 }
186 mbedtls_mpi;
187
195 void mbedtls_mpi_init( mbedtls_mpi *X );
196
202 void mbedtls_mpi_free( mbedtls_mpi *X );
203
215 int mbedtls_mpi_grow( mbedtls_mpi *X, size_t nblimbs );
216
230 int mbedtls_mpi_shrink( mbedtls_mpi *X, size_t nblimbs );
231
241 int mbedtls_mpi_copy( mbedtls_mpi *X, const mbedtls_mpi *Y );
242
249 void mbedtls_mpi_swap( mbedtls_mpi *X, mbedtls_mpi *Y );
250
268 int mbedtls_mpi_safe_cond_assign( mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign );
269
287 int mbedtls_mpi_safe_cond_swap( mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char assign );
288
298 int mbedtls_mpi_lset( mbedtls_mpi *X, mbedtls_mpi_sint z );
299
308 int mbedtls_mpi_get_bit( const mbedtls_mpi *X, size_t pos );
309
324 int mbedtls_mpi_set_bit( mbedtls_mpi *X, size_t pos, unsigned char val );
325
334 size_t mbedtls_mpi_lsb( const mbedtls_mpi *X );
335
344 size_t mbedtls_mpi_bitlen( const mbedtls_mpi *X );
345
351 size_t mbedtls_mpi_size( const mbedtls_mpi *X );
352
362 int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s );
363
380 int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix,
381 char *buf, size_t buflen, size_t *olen );
382
383 #if defined(MBEDTLS_FS_IO)
384
404 int mbedtls_mpi_read_file( mbedtls_mpi *X, int radix, FILE *fin );
405
418 int mbedtls_mpi_write_file( const char *p, const mbedtls_mpi *X, int radix, FILE *fout );
419 #endif /* MBEDTLS_FS_IO */
420
431 int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t buflen );
432
445 int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf, size_t buflen );
446
456 int mbedtls_mpi_shift_l( mbedtls_mpi *X, size_t count );
457
467 int mbedtls_mpi_shift_r( mbedtls_mpi *X, size_t count );
468
479 int mbedtls_mpi_cmp_abs( const mbedtls_mpi *X, const mbedtls_mpi *Y );
480
491 int mbedtls_mpi_cmp_mpi( const mbedtls_mpi *X, const mbedtls_mpi *Y );
492
503 int mbedtls_mpi_cmp_int( const mbedtls_mpi *X, mbedtls_mpi_sint z );
504
515 int mbedtls_mpi_add_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
516
527 int mbedtls_mpi_sub_abs( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
528
539 int mbedtls_mpi_add_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
540
551 int mbedtls_mpi_sub_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
552
563 int mbedtls_mpi_add_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
564
575 int mbedtls_mpi_sub_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b );
576
587 int mbedtls_mpi_mul_mpi( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B );
588
601 int mbedtls_mpi_mul_int( mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b );
602
617 int mbedtls_mpi_div_mpi( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
618
633 int mbedtls_mpi_div_int( mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b );
634
647 int mbedtls_mpi_mod_mpi( mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B );
648
661 int mbedtls_mpi_mod_int( mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b );
662
681 int mbedtls_mpi_exp_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR );
682
698 int mbedtls_mpi_fill_random( mbedtls_mpi *X, size_t size,
699 int (*f_rng)(void *, unsigned char *, size_t),
700 void *p_rng );
701
712 int mbedtls_mpi_gcd( mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B );
713
726 int mbedtls_mpi_inv_mod( mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N );
727
728 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
729 #if defined(MBEDTLS_DEPRECATED_WARNING)
730 #define MBEDTLS_DEPRECATED __attribute__((deprecated))
731 #else
732 #define MBEDTLS_DEPRECATED
733 #endif
734
749 MBEDTLS_DEPRECATED int mbedtls_mpi_is_prime( const mbedtls_mpi *X,
750 int (*f_rng)(void *, unsigned char *, size_t),
751 void *p_rng );
752 #undef MBEDTLS_DEPRECATED
753 #endif /* !MBEDTLS_DEPRECATED_REMOVED */
754
778 int mbedtls_mpi_is_prime_ext( const mbedtls_mpi *X, int rounds,
779 int (*f_rng)(void *, unsigned char *, size_t),
780 void *p_rng );
787 typedef enum {
788 MBEDTLS_MPI_GEN_PRIME_FLAG_DH = 0x0001,
789 MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR = 0x0002,
790 } mbedtls_mpi_gen_prime_flag_t;
791
806 int mbedtls_mpi_gen_prime( mbedtls_mpi *X, size_t nbits, int flags,
807 int (*f_rng)(void *, unsigned char *, size_t),
808 void *p_rng );
809
815 int mbedtls_mpi_self_test( int verbose );
816
817 #ifdef __cplusplus
818 }
819 #endif
820
821 #endif /* bignum.h */
mbedtls_mpi_div_mpi
int mbedtls_mpi_div_mpi(mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B)
Division by mbedtls_mpi: A = Q * B + R.
mbedtls_mpi_free
void mbedtls_mpi_free(mbedtls_mpi *X)
Unallocate one MPI.
mbedtls_mpi_gcd
int mbedtls_mpi_gcd(mbedtls_mpi *G, const mbedtls_mpi *A, const mbedtls_mpi *B)
Greatest common divisor: G = gcd(A, B)
mbedtls_mpi_fill_random
int mbedtls_mpi_fill_random(mbedtls_mpi *X, size_t size, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Fill an MPI X with size bytes of random.
mbedtls_mpi_is_prime_ext
int mbedtls_mpi_is_prime_ext(const mbedtls_mpi *X, int rounds, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Miller-Rabin primality test.
mbedtls_mpi_sub_int
int mbedtls_mpi_sub_int(mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b)
Signed subtraction: X = A - b.
mbedtls_mpi_lsb
size_t mbedtls_mpi_lsb(const mbedtls_mpi *X)
Return the number of zero-bits before the least significant &#39;1&#39; bit.
MBEDTLS_DEPRECATED
#define MBEDTLS_DEPRECATED
Definition: bignum.h:732
mbedtls_mpi_grow
int mbedtls_mpi_grow(mbedtls_mpi *X, size_t nblimbs)
Enlarge to the specified number of limbs.
mbedtls_mpi_safe_cond_assign
int mbedtls_mpi_safe_cond_assign(mbedtls_mpi *X, const mbedtls_mpi *Y, unsigned char assign)
Safe conditional assignement X = Y if assign is 1.
mbedtls_mpi_mod_mpi
int mbedtls_mpi_mod_mpi(mbedtls_mpi *R, const mbedtls_mpi *A, const mbedtls_mpi *B)
Modulo: R = A mod B.
mbedtls_mpi_exp_mod
int mbedtls_mpi_exp_mod(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *E, const mbedtls_mpi *N, mbedtls_mpi *_RR)
Sliding-window exponentiation: X = A^E mod N.
mbedtls_mpi_sint
int32_t mbedtls_mpi_sint
Definition: bignum.h:165
mbedtls_mpi_bitlen
size_t mbedtls_mpi_bitlen(const mbedtls_mpi *X)
Return the number of bits up to and including the most significant &#39;1&#39; bit&#39;.
mbedtls_mpi_cmp_mpi
int mbedtls_mpi_cmp_mpi(const mbedtls_mpi *X, const mbedtls_mpi *Y)
Compare signed values.
mbedtls_mpi_size
size_t mbedtls_mpi_size(const mbedtls_mpi *X)
Return the total size in bytes.
mbedtls_mpi_sub_mpi
int mbedtls_mpi_sub_mpi(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B)
Signed subtraction: X = A - B.
mbedtls_mpi_sub_abs
int mbedtls_mpi_sub_abs(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B)
Unsigned subtraction: X = |A| - |B|.
config.h
Configuration options (set of defines)
mbedtls_mpi_read_string
int mbedtls_mpi_read_string(mbedtls_mpi *X, int radix, const char *s)
Import from an ASCII string.
mbedtls_t_udbl
uint64_t mbedtls_t_udbl
Definition: bignum.h:168
MBEDTLS_MPI_GEN_PRIME_FLAG_DH
Definition: bignum.h:788
mbedtls_mpi_set_bit
int mbedtls_mpi_set_bit(mbedtls_mpi *X, size_t pos, unsigned char val)
Set a bit of X to a specific value of 0 or 1.
MBEDTLS_MPI_GEN_PRIME_FLAG_LOW_ERR
Definition: bignum.h:789
mbedtls_mpi_lset
int mbedtls_mpi_lset(mbedtls_mpi *X, mbedtls_mpi_sint z)
Set value from integer.
mbedtls_mpi_div_int
int mbedtls_mpi_div_int(mbedtls_mpi *Q, mbedtls_mpi *R, const mbedtls_mpi *A, mbedtls_mpi_sint b)
Division by int: A = Q * b + R.
mbedtls_mpi_read_binary
int mbedtls_mpi_read_binary(mbedtls_mpi *X, const unsigned char *buf, size_t buflen)
Import X from unsigned binary data, big endian.
mbedtls_mpi::p
mbedtls_mpi_uint * p
Definition: bignum.h:184
mbedtls_mpi_shrink
int mbedtls_mpi_shrink(mbedtls_mpi *X, size_t nblimbs)
Resize down, keeping at least the specified number of limbs.
mbedtls_mpi_is_prime
MBEDTLS_DEPRECATED int mbedtls_mpi_is_prime(const mbedtls_mpi *X, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Miller-Rabin primality test with error probability of 2-80
mbedtls_mpi_add_int
int mbedtls_mpi_add_int(mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_sint b)
Signed addition: X = A + b.
mbedtls_mpi_shift_r
int mbedtls_mpi_shift_r(mbedtls_mpi *X, size_t count)
Right-shift: X >>= count.
mbedtls_mpi_mod_int
int mbedtls_mpi_mod_int(mbedtls_mpi_uint *r, const mbedtls_mpi *A, mbedtls_mpi_sint b)
Modulo: r = A mod b.
mbedtls_mpi_shift_l
int mbedtls_mpi_shift_l(mbedtls_mpi *X, size_t count)
Left-shift: X <<= count.
mbedtls_mpi_mul_int
int mbedtls_mpi_mul_int(mbedtls_mpi *X, const mbedtls_mpi *A, mbedtls_mpi_uint b)
Baseline multiplication: X = A * b.
mbedtls_mpi_uint
uint32_t mbedtls_mpi_uint
Definition: bignum.h:166
mbedtls_mpi_self_test
int mbedtls_mpi_self_test(int verbose)
Checkup routine.
mbedtls_mpi_safe_cond_swap
int mbedtls_mpi_safe_cond_swap(mbedtls_mpi *X, mbedtls_mpi *Y, unsigned char assign)
Safe conditional swap X <-> Y if swap is 1.
mbedtls_mpi_init
void mbedtls_mpi_init(mbedtls_mpi *X)
Initialize one MPI (make internal references valid) This just makes it ready to be set or freed...
mbedtls_mpi_swap
void mbedtls_mpi_swap(mbedtls_mpi *X, mbedtls_mpi *Y)
Swap the contents of X and Y.
mbedtls_mpi_add_mpi
int mbedtls_mpi_add_mpi(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B)
Signed addition: X = A + B.
mbedtls_mpi_inv_mod
int mbedtls_mpi_inv_mod(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *N)
Modular inverse: X = A^-1 mod N.
mbedtls_mpi
MPI structure.
Definition: bignum.h:180
mbedtls_mpi_copy
int mbedtls_mpi_copy(mbedtls_mpi *X, const mbedtls_mpi *Y)
Copy the contents of Y into X.
mbedtls_mpi::s
int s
Definition: bignum.h:182
mbedtls_mpi_write_string
int mbedtls_mpi_write_string(const mbedtls_mpi *X, int radix, char *buf, size_t buflen, size_t *olen)
Export into an ASCII string.
mbedtls_mpi_read_file
int mbedtls_mpi_read_file(mbedtls_mpi *X, int radix, FILE *fin)
Read MPI from a line in an opened file.
mbedtls_mpi_write_file
int mbedtls_mpi_write_file(const char *p, const mbedtls_mpi *X, int radix, FILE *fout)
Write X into an opened file, or stdout if fout is NULL.
mbedtls_mpi::n
size_t n
Definition: bignum.h:183
mbedtls_mpi_add_abs
int mbedtls_mpi_add_abs(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B)
Unsigned addition: X = |A| + |B|.
mbedtls_mpi_cmp_abs
int mbedtls_mpi_cmp_abs(const mbedtls_mpi *X, const mbedtls_mpi *Y)
Compare unsigned values.
mbedtls_mpi_write_binary
int mbedtls_mpi_write_binary(const mbedtls_mpi *X, unsigned char *buf, size_t buflen)
Export X into unsigned binary data, big endian. Always fills the whole buffer, which will start with ...
mbedtls_mpi_gen_prime_flag_t
mbedtls_mpi_gen_prime_flag_t
Flags for mbedtls_mpi_gen_prime()
Definition: bignum.h:787
mbedtls_mpi_mul_mpi
int mbedtls_mpi_mul_mpi(mbedtls_mpi *X, const mbedtls_mpi *A, const mbedtls_mpi *B)
Baseline multiplication: X = A * B.
mbedtls_mpi_cmp_int
int mbedtls_mpi_cmp_int(const mbedtls_mpi *X, mbedtls_mpi_sint z)
Compare signed values.
mbedtls_mpi_get_bit
int mbedtls_mpi_get_bit(const mbedtls_mpi *X, size_t pos)
Get a specific bit from X.
mbedtls_mpi
struct mbedtls_mpi mbedtls_mpi
MPI structure.
mbedtls_mpi_gen_prime
int mbedtls_mpi_gen_prime(mbedtls_mpi *X, size_t nbits, int flags, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
Prime number generation.