OpenCoverage

rsa_crpt.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/rsa/rsa_crpt.c
Source codeSwitch to Preprocessed file
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1/*-
2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.-
3 *-
4 * Licensed under the OpenSSL license (the "License"). You may not use-
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-
8 */-
9-
10#include <stdio.h>-
11#include <openssl/crypto.h>-
12#include "internal/cryptlib.h"-
13#include "internal/bn_int.h"-
14#include <openssl/rand.h>-
15#include "rsa_locl.h"-
16-
17int RSA_bits(const RSA *r)-
18{-
19 return BN_num_bits(r->n);
executed 20 times by 1 test: return BN_num_bits(r->n);
Executed by:
  • libcrypto.so.1.1
20
20}-
21-
22int RSA_size(const RSA *r)-
23{-
24 return BN_num_bytes(r->n);
executed 15070 times by 1 test: return ((BN_num_bits(r->n)+7)/8);
Executed by:
  • libcrypto.so.1.1
15070
25}-
26-
27int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to,-
28 RSA *rsa, int padding)-
29{-
30 return rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding);
executed 499 times by 1 test: return rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding);
Executed by:
  • libcrypto.so.1.1
499
31}-
32-
33int RSA_private_encrypt(int flen, const unsigned char *from,-
34 unsigned char *to, RSA *rsa, int padding)-
35{-
36 return rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding);
executed 1651 times by 1 test: return rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding);
Executed by:
  • libcrypto.so.1.1
1651
37}-
38-
39int RSA_private_decrypt(int flen, const unsigned char *from,-
40 unsigned char *to, RSA *rsa, int padding)-
41{-
42 return rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding);
executed 735 times by 1 test: return rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding);
Executed by:
  • libcrypto.so.1.1
735
43}-
44-
45int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to,-
46 RSA *rsa, int padding)-
47{-
48 return rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding);
executed 2776 times by 1 test: return rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding);
Executed by:
  • libcrypto.so.1.1
2776
49}-
50-
51int RSA_flags(const RSA *r)-
52{-
53 return r == NULL ? 0 : r->meth->flags;
executed 3942 times by 1 test: return r == ((void *)0) ? 0 : r->meth->flags;
Executed by:
  • libcrypto.so.1.1
r == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 3942 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-3942
54}-
55-
56void RSA_blinding_off(RSA *rsa)-
57{-
58 BN_BLINDING_free(rsa->blinding);-
59 rsa->blinding = NULL;-
60 rsa->flags &= ~RSA_FLAG_BLINDING;-
61 rsa->flags |= RSA_FLAG_NO_BLINDING;-
62}
never executed: end of block
0
63-
64int RSA_blinding_on(RSA *rsa, BN_CTX *ctx)-
65{-
66 int ret = 0;-
67-
68 if (rsa->blinding != NULL)
rsa->blinding != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
69 RSA_blinding_off(rsa);
never executed: RSA_blinding_off(rsa);
0
70-
71 rsa->blinding = RSA_setup_blinding(rsa, ctx);-
72 if (rsa->blinding == NULL)
rsa->blinding == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
73 goto err;
never executed: goto err;
0
74-
75 rsa->flags |= RSA_FLAG_BLINDING;-
76 rsa->flags &= ~RSA_FLAG_NO_BLINDING;-
77 ret = 1;-
78 err:
code before this statement never executed: err:
0
79 return ret;
never executed: return ret;
0
80}-
81-
82static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,-
83 const BIGNUM *q, BN_CTX *ctx)-
84{-
85 BIGNUM *ret = NULL, *r0, *r1, *r2;-
86-
87 if (d == NULL || p == NULL || q == NULL)
d == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
p == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
q == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
88 return NULL;
never executed: return ((void *)0) ;
0
89-
90 BN_CTX_start(ctx);-
91 r0 = BN_CTX_get(ctx);-
92 r1 = BN_CTX_get(ctx);-
93 r2 = BN_CTX_get(ctx);-
94 if (r2 == NULL)
r2 == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
95 goto err;
never executed: goto err;
0
96-
97 if (!BN_sub(r1, p, BN_value_one()))
!BN_sub(r1, p, BN_value_one())Description
TRUEnever evaluated
FALSEnever evaluated
0
98 goto err;
never executed: goto err;
0
99 if (!BN_sub(r2, q, BN_value_one()))
!BN_sub(r2, q, BN_value_one())Description
TRUEnever evaluated
FALSEnever evaluated
0
100 goto err;
never executed: goto err;
0
101 if (!BN_mul(r0, r1, r2, ctx))
!BN_mul(r0, r1, r2, ctx)Description
TRUEnever evaluated
FALSEnever evaluated
0
102 goto err;
never executed: goto err;
0
103-
104 ret = BN_mod_inverse(NULL, d, r0, ctx);-
105 err:
code before this statement never executed: err:
0
106 BN_CTX_end(ctx);-
107 return ret;
never executed: return ret;
0
108}-
109-
110BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx)-
111{-
112 BIGNUM *e;-
113 BN_CTX *ctx;-
114 BN_BLINDING *ret = NULL;-
115-
116 if (in_ctx == NULL) {
in_ctx == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
117 if ((ctx = BN_CTX_new()) == NULL)
(ctx = BN_CTX_...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
118 return 0;
never executed: return 0;
0
119 } else {
never executed: end of block
0
120 ctx = in_ctx;-
121 }
executed 1733 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
1733
122-
123 BN_CTX_start(ctx);-
124 e = BN_CTX_get(ctx);-
125 if (e == NULL) {
e == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
126 RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);-
127 goto err;
never executed: goto err;
0
128 }-
129-
130 if (rsa->e == NULL) {
rsa->e == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
131 e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx);-
132 if (e == NULL) {
e == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
133 RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT);-
134 goto err;
never executed: goto err;
0
135 }-
136 } else {
never executed: end of block
0
137 e = rsa->e;-
138 }
executed 1733 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
1733
139-
140 {-
141 BIGNUM *n = BN_new();-
142-
143 if (n == NULL) {
n == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
144 RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);-
145 goto err;
never executed: goto err;
0
146 }-
147 BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);-
148-
149 ret = BN_BLINDING_create_param(NULL, e, n, ctx, rsa->meth->bn_mod_exp,-
150 rsa->_method_mod_n);-
151 /* We MUST free n before any further use of rsa->n */-
152 BN_free(n);-
153 }-
154 if (ret == NULL) {
ret == ((void *)0)Description
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
155 RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB);-
156 goto err;
never executed: goto err;
0
157 }-
158-
159 BN_BLINDING_set_current_thread(ret);-
160-
161 err:
code before this statement executed 1733 times by 1 test: err:
Executed by:
  • libcrypto.so.1.1
1733
162 BN_CTX_end(ctx);-
163 if (ctx != in_ctx)
ctx != in_ctxDescription
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
164 BN_CTX_free(ctx);
never executed: BN_CTX_free(ctx);
0
165 if (e != rsa->e)
e != rsa->eDescription
TRUEnever evaluated
FALSEevaluated 1733 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
0-1733
166 BN_free(e);
never executed: BN_free(e);
0
167-
168 return ret;
executed 1733 times by 1 test: return ret;
Executed by:
  • libcrypto.so.1.1
1733
169}-
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