OpenCoverage

pem_seal.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/pem/pem_seal.c
Source codeSwitch to Preprocessed file
LineSourceCount
1/* $OpenBSD: pem_seal.c,v 1.24 2017/01/29 17:49:23 beck Exp $ */-
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)-
3 * All rights reserved.-
4 *-
5 * This package is an SSL implementation written-
6 * by Eric Young (eay@cryptsoft.com).-
7 * The implementation was written so as to conform with Netscapes SSL.-
8 *-
9 * This library is free for commercial and non-commercial use as long as-
10 * the following conditions are aheared to. The following conditions-
11 * apply to all code found in this distribution, be it the RC4, RSA,-
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation-
13 * included with this distribution is covered by the same copyright terms-
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).-
15 *-
16 * Copyright remains Eric Young's, and as such any Copyright notices in-
17 * the code are not to be removed.-
18 * If this package is used in a product, Eric Young should be given attribution-
19 * as the author of the parts of the library used.-
20 * This can be in the form of a textual message at program startup or-
21 * in documentation (online or textual) provided with the package.-
22 *-
23 * Redistribution and use in source and binary forms, with or without-
24 * modification, are permitted provided that the following conditions-
25 * are met:-
26 * 1. Redistributions of source code must retain the copyright-
27 * notice, this list of conditions and the following disclaimer.-
28 * 2. Redistributions in binary form must reproduce the above copyright-
29 * notice, this list of conditions and the following disclaimer in the-
30 * documentation and/or other materials provided with the distribution.-
31 * 3. All advertising materials mentioning features or use of this software-
32 * must display the following acknowledgement:-
33 * "This product includes cryptographic software written by-
34 * Eric Young (eay@cryptsoft.com)"-
35 * The word 'cryptographic' can be left out if the rouines from the library-
36 * being used are not cryptographic related :-).-
37 * 4. If you include any Windows specific code (or a derivative thereof) from-
38 * the apps directory (application code) you must include an acknowledgement:-
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"-
40 *-
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND-
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE-
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE-
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE-
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL-
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS-
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)-
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT-
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY-
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF-
51 * SUCH DAMAGE.-
52 *-
53 * The licence and distribution terms for any publically available version or-
54 * derivative of this code cannot be changed. i.e. this code cannot simply be-
55 * copied and put under another distribution licence-
56 * [including the GNU Public Licence.]-
57 */-
58-
59#include <stdio.h>-
60#include <string.h>-
61-
62#include <openssl/opensslconf.h> /* for OPENSSL_NO_RSA */-
63-
64#ifndef OPENSSL_NO_RSA-
65-
66#include <openssl/err.h>-
67#include <openssl/evp.h>-
68#include <openssl/objects.h>-
69#include <openssl/pem.h>-
70#include <openssl/rsa.h>-
71#include <openssl/x509.h>-
72-
73static void-
74PEM_ENCODE_SEAL_CTX_cleanup(PEM_ENCODE_SEAL_CTX *ctx)-
75{-
76 EVP_CIPHER_CTX_cleanup(&ctx->cipher);-
77 EVP_MD_CTX_cleanup(&ctx->md);-
78 explicit_bzero(&ctx->encode, sizeof(ctx->encode));-
79}
never executed: end of block
0
80-
81int-
82PEM_SealInit(PEM_ENCODE_SEAL_CTX *ctx, EVP_CIPHER *type, EVP_MD *md_type,-
83 unsigned char **ek, int *ekl, unsigned char *iv, EVP_PKEY **pubk, int npubk)-
84{-
85 unsigned char key[EVP_MAX_KEY_LENGTH];-
86 int ret = -1;-
87 int i, j, max = 0;-
88 char *s = NULL;-
89-
90 /*-
91 * Make sure ctx is properly initialized so that we can always pass-
92 * it to PEM_ENCODE_SEAL_CTX_cleanup() in the error path.-
93 */-
94 EVP_EncodeInit(&ctx->encode);-
95 EVP_MD_CTX_init(&ctx->md);-
96 EVP_CIPHER_CTX_init(&ctx->cipher);-
97-
98 for (i = 0; i < npubk; i++) {
i < npubkDescription
TRUEnever evaluated
FALSEnever evaluated
0
99 if (pubk[i]->type != EVP_PKEY_RSA) {
pubk[i]->type != 6Description
TRUEnever evaluated
FALSEnever evaluated
0
100 PEMerror(PEM_R_PUBLIC_KEY_NO_RSA);-
101 goto err;
never executed: goto err;
0
102 }-
103 j = RSA_size(pubk[i]->pkey.rsa);-
104 if (j > max)
j > maxDescription
TRUEnever evaluated
FALSEnever evaluated
0
105 max = j;
never executed: max = j;
0
106 }
never executed: end of block
0
107 s = reallocarray(NULL, max, 2);-
108 if (s == NULL) {
s == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
109 PEMerror(ERR_R_MALLOC_FAILURE);-
110 goto err;
never executed: goto err;
0
111 }-
112-
113 if (!EVP_SignInit(&ctx->md, md_type))
!EVP_DigestIni...x->md,md_type)Description
TRUEnever evaluated
FALSEnever evaluated
0
114 goto err;
never executed: goto err;
0
115-
116 ret = EVP_SealInit(&ctx->cipher, type, ek, ekl, iv, pubk, npubk);-
117 if (ret <= 0)
ret <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
118 goto err;
never executed: goto err;
0
119-
120 /* base64 encode the keys */-
121 for (i = 0; i < npubk; i++) {
i < npubkDescription
TRUEnever evaluated
FALSEnever evaluated
0
122 j = EVP_EncodeBlock((unsigned char *)s, ek[i],-
123 RSA_size(pubk[i]->pkey.rsa));-
124 ekl[i] = j;-
125 memcpy(ek[i], s, j + 1);-
126 }
never executed: end of block
0
127-
128 ret = npubk;-
129-
130 if (0) {-
131err:-
132 PEM_ENCODE_SEAL_CTX_cleanup(ctx);-
133 }
never executed: end of block
0
134 free(s);-
135 explicit_bzero(key, sizeof(key));-
136 return (ret);
never executed: return (ret);
0
137}-
138-
139void-
140PEM_SealUpdate(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *out, int *outl,-
141 unsigned char *in, int inl)-
142{-
143 unsigned char buffer[1600];-
144 int i, j;-
145-
146 *outl = 0;-
147 EVP_SignUpdate(&ctx->md, in, inl);-
148 for (;;) {-
149 if (inl <= 0)
inl <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
150 break;
never executed: break;
0
151 if (inl > 1200)
inl > 1200Description
TRUEnever evaluated
FALSEnever evaluated
0
152 i = 1200;
never executed: i = 1200;
0
153 else-
154 i = inl;
never executed: i = inl;
0
155 EVP_EncryptUpdate(&ctx->cipher, buffer, &j, in, i);-
156 EVP_EncodeUpdate(&ctx->encode, out, &j, buffer, j);-
157 *outl += j;-
158 out += j;-
159 in += i;-
160 inl -= i;-
161 }
never executed: end of block
0
162}
never executed: end of block
0
163-
164int-
165PEM_SealFinal(PEM_ENCODE_SEAL_CTX *ctx, unsigned char *sig, int *sigl,-
166 unsigned char *out, int *outl, EVP_PKEY *priv)-
167{-
168 unsigned char *s = NULL;-
169 int ret = 0, j;-
170 unsigned int i;-
171-
172 if (priv->type != EVP_PKEY_RSA) {
priv->type != 6Description
TRUEnever evaluated
FALSEnever evaluated
0
173 PEMerror(PEM_R_PUBLIC_KEY_NO_RSA);-
174 goto err;
never executed: goto err;
0
175 }-
176 i = RSA_size(priv->pkey.rsa);-
177 if (i < 100)
i < 100Description
TRUEnever evaluated
FALSEnever evaluated
0
178 i = 100;
never executed: i = 100;
0
179 s = reallocarray(NULL, i, 2);-
180 if (s == NULL) {
s == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
181 PEMerror(ERR_R_MALLOC_FAILURE);-
182 goto err;
never executed: goto err;
0
183 }-
184-
185 if (!EVP_EncryptFinal_ex(&ctx->cipher, s, (int *)&i))
!EVP_EncryptFi... s, (int *)&i)Description
TRUEnever evaluated
FALSEnever evaluated
0
186 goto err;
never executed: goto err;
0
187 EVP_EncodeUpdate(&ctx->encode, out, &j, s, i);-
188 *outl = j;-
189 out += j;-
190 EVP_EncodeFinal(&ctx->encode, out, &j);-
191 *outl += j;-
192-
193 if (!EVP_SignFinal(&ctx->md, s, &i, priv))
!EVP_SignFinal..., s, &i, priv)Description
TRUEnever evaluated
FALSEnever evaluated
0
194 goto err;
never executed: goto err;
0
195 *sigl = EVP_EncodeBlock(sig, s, i);-
196-
197 ret = 1;-
198-
199err:
code before this statement never executed: err:
0
200 PEM_ENCODE_SEAL_CTX_cleanup(ctx);-
201 free(s);-
202 return (ret);
never executed: return (ret);
0
203}-
204#endif-
Source codeSwitch to Preprocessed file
Generated by Squish Coco 4.2.2