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Commit | Line | Data |
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4f22f405 | 1 | /* |
b4df712a | 2 | * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved. |
d02b48c6 | 3 | * |
367ace68 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
4f22f405 RS |
5 | * this file except in compliance with the License. You can obtain a copy |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
636b087e | 11 | #include <openssl/bio.h> |
d02b48c6 RE |
12 | #include "bn_lcl.h" |
13 | ||
0f113f3e | 14 | static const char Hex[] = "0123456789ABCDEF"; |
d02b48c6 | 15 | |
636b087e | 16 | #ifndef OPENSSL_NO_STDIO |
e93f9a32 | 17 | int BN_print_fp(FILE *fp, const BIGNUM *a) |
0f113f3e MC |
18 | { |
19 | BIO *b; | |
20 | int ret; | |
21 | ||
22 | if ((b = BIO_new(BIO_s_file())) == NULL) | |
b4df712a | 23 | return 0; |
0f113f3e MC |
24 | BIO_set_fp(b, fp, BIO_NOCLOSE); |
25 | ret = BN_print(b, a); | |
26 | BIO_free(b); | |
b4df712a | 27 | return ret; |
0f113f3e | 28 | } |
636b087e | 29 | #endif |
d02b48c6 | 30 | |
8d8a8041 | 31 | int BN_print(BIO *bp, const BIGNUM *a) |
0f113f3e MC |
32 | { |
33 | int i, j, v, z = 0; | |
34 | int ret = 0; | |
35 | ||
27c6d63d | 36 | if ((a->neg) && BIO_write(bp, "-", 1) != 1) |
0f113f3e | 37 | goto end; |
27c6d63d | 38 | if (BN_is_zero(a) && BIO_write(bp, "0", 1) != 1) |
0f113f3e MC |
39 | goto end; |
40 | for (i = a->top - 1; i >= 0; i--) { | |
41 | for (j = BN_BITS2 - 4; j >= 0; j -= 4) { | |
42 | /* strip leading zeros */ | |
c9b820aa | 43 | v = (int)((a->d[i] >> j) & 0x0f); |
27c6d63d P |
44 | if (z || v != 0) { |
45 | if (BIO_write(bp, &Hex[v], 1) != 1) | |
0f113f3e MC |
46 | goto end; |
47 | z = 1; | |
48 | } | |
49 | } | |
50 | } | |
51 | ret = 1; | |
52 | end: | |
b4df712a | 53 | return ret; |
0f113f3e | 54 | } |
13a55192 DSH |
55 | |
56 | char *BN_options(void) | |
0f113f3e MC |
57 | { |
58 | static int init = 0; | |
59 | static char data[16]; | |
13a55192 | 60 | |
0f113f3e MC |
61 | if (!init) { |
62 | init++; | |
13a55192 | 63 | #ifdef BN_LLONG |
86ba26c8 P |
64 | BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)", |
65 | sizeof(BN_ULLONG) * 8, sizeof(BN_ULONG) * 8); | |
13a55192 | 66 | #else |
86ba26c8 P |
67 | BIO_snprintf(data, sizeof(data), "bn(%zu,%zu)", |
68 | sizeof(BN_ULONG) * 8, sizeof(BN_ULONG) * 8); | |
13a55192 | 69 | #endif |
0f113f3e | 70 | } |
b4df712a | 71 | return data; |
0f113f3e | 72 | } |