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p5_pbev2.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/asn1/p5_pbev2.c
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1/*-
2 * Copyright 1999-2018 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 "internal/cryptlib.h"-
12#include <openssl/asn1t.h>-
13#include <openssl/x509.h>-
14#include <openssl/rand.h>-
15-
16/* PKCS#5 v2.0 password based encryption structures */-
17-
18ASN1_SEQUENCE(PBE2PARAM) = {-
19 ASN1_SIMPLE(PBE2PARAM, keyfunc, X509_ALGOR),-
20 ASN1_SIMPLE(PBE2PARAM, encryption, X509_ALGOR)-
21} ASN1_SEQUENCE_END(PBE2PARAM)-
22-
23IMPLEMENT_ASN1_FUNCTIONS(PBE2PARAM)
never executed: end of block
never executed: return (PBE2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(PBE2PARAM_it)));
never executed: return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(PBE2PARAM_it)));
never executed: return (PBE2PARAM *)ASN1_item_new((&(PBE2PARAM_it)));
0
24-
25ASN1_SEQUENCE(PBKDF2PARAM) = {-
26 ASN1_SIMPLE(PBKDF2PARAM, salt, ASN1_ANY),-
27 ASN1_SIMPLE(PBKDF2PARAM, iter, ASN1_INTEGER),-
28 ASN1_OPT(PBKDF2PARAM, keylength, ASN1_INTEGER),-
29 ASN1_OPT(PBKDF2PARAM, prf, X509_ALGOR)-
30} ASN1_SEQUENCE_END(PBKDF2PARAM)-
31-
32IMPLEMENT_ASN1_FUNCTIONS(PBKDF2PARAM)
never executed: end of block
never executed: return (PBKDF2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, (&(PBKDF2PARAM_it)));
never executed: return ASN1_item_i2d((ASN1_VALUE *)a, out, (&(PBKDF2PARAM_it)));
never executed: return (PBKDF2PARAM *)ASN1_item_new((&(PBKDF2PARAM_it)));
0
33-
34/*-
35 * Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm: yes I know-
36 * this is horrible! Extended version to allow application supplied PRF NID-
37 * and IV.-
38 */-
39-
40X509_ALGOR *PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter,-
41 unsigned char *salt, int saltlen,-
42 unsigned char *aiv, int prf_nid)-
43{-
44 X509_ALGOR *scheme = NULL, *ret = NULL;-
45 int alg_nid, keylen;-
46 EVP_CIPHER_CTX *ctx = NULL;-
47 unsigned char iv[EVP_MAX_IV_LENGTH];-
48 PBE2PARAM *pbe2 = NULL;-
49-
50 alg_nid = EVP_CIPHER_type(cipher);-
51 if (alg_nid == NID_undef) {
alg_nid == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
52 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,-
53 ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);-
54 goto err;
never executed: goto err;
0
55 }-
56-
57 if ((pbe2 = PBE2PARAM_new()) == NULL)
(pbe2 = PBE2PA...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
58 goto merr;
never executed: goto merr;
0
59-
60 /* Setup the AlgorithmIdentifier for the encryption scheme */-
61 scheme = pbe2->encryption;-
62 scheme->algorithm = OBJ_nid2obj(alg_nid);-
63 if ((scheme->parameter = ASN1_TYPE_new()) == NULL)
(scheme->param...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
64 goto merr;
never executed: goto merr;
0
65-
66 /* Create random IV */-
67 if (EVP_CIPHER_iv_length(cipher)) {
EVP_CIPHER_iv_length(cipher)Description
TRUEnever evaluated
FALSEnever evaluated
0
68 if (aiv)
aivDescription
TRUEnever evaluated
FALSEnever evaluated
0
69 memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
never executed: memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
0
70 else if (RAND_bytes(iv, EVP_CIPHER_iv_length(cipher)) <= 0)
RAND_bytes(iv,...(cipher)) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
71 goto err;
never executed: goto err;
0
72 }
never executed: end of block
0
73-
74 ctx = EVP_CIPHER_CTX_new();-
75 if (ctx == NULL)
ctx == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
76 goto merr;
never executed: goto merr;
0
77-
78 /* Dummy cipherinit to just setup the IV, and PRF */-
79 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, iv, 0))
!EVP_CipherIni... *)0) , iv, 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
80 goto err;
never executed: goto err;
0
81 if (EVP_CIPHER_param_to_asn1(ctx, scheme->parameter) <= 0) {
EVP_CIPHER_par...arameter) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
82 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ASN1_R_ERROR_SETTING_CIPHER_PARAMS);-
83 goto err;
never executed: goto err;
0
84 }-
85 /*-
86 * If prf NID unspecified see if cipher has a preference. An error is OK-
87 * here: just means use default PRF.-
88 */-
89 if ((prf_nid == -1) &&
(prf_nid == -1)Description
TRUEnever evaluated
FALSEnever evaluated
0
90 EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) {
EVP_CIPHER_CTX...&prf_nid) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
91 ERR_clear_error();-
92 prf_nid = NID_hmacWithSHA256;-
93 }
never executed: end of block
0
94 EVP_CIPHER_CTX_free(ctx);-
95 ctx = NULL;-
96-
97 /* If its RC2 then we'd better setup the key length */-
98-
99 if (alg_nid == NID_rc2_cbc)
alg_nid == 37Description
TRUEnever evaluated
FALSEnever evaluated
0
100 keylen = EVP_CIPHER_key_length(cipher);
never executed: keylen = EVP_CIPHER_key_length(cipher);
0
101 else-
102 keylen = -1;
never executed: keylen = -1;
0
103-
104 /* Setup keyfunc */-
105-
106 X509_ALGOR_free(pbe2->keyfunc);-
107-
108 pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen);-
109-
110 if (!pbe2->keyfunc)
!pbe2->keyfuncDescription
TRUEnever evaluated
FALSEnever evaluated
0
111 goto merr;
never executed: goto merr;
0
112-
113 /* Now set up top level AlgorithmIdentifier */-
114-
115 if ((ret = X509_ALGOR_new()) == NULL)
(ret = X509_AL...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
116 goto merr;
never executed: goto merr;
0
117-
118 ret->algorithm = OBJ_nid2obj(NID_pbes2);-
119-
120 /* Encode PBE2PARAM into parameter */-
121-
122 if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBE2PARAM), pbe2,
!ASN1_TYPE_pac...et->parameter)Description
TRUEnever evaluated
FALSEnever evaluated
0
123 &ret->parameter))
!ASN1_TYPE_pac...et->parameter)Description
TRUEnever evaluated
FALSEnever evaluated
0
124 goto merr;
never executed: goto merr;
0
125-
126 PBE2PARAM_free(pbe2);-
127 pbe2 = NULL;-
128-
129 return ret;
never executed: return ret;
0
130-
131 merr:-
132 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ERR_R_MALLOC_FAILURE);-
133-
134 err:
code before this statement never executed: err:
0
135 EVP_CIPHER_CTX_free(ctx);-
136 PBE2PARAM_free(pbe2);-
137 /* Note 'scheme' is freed as part of pbe2 */-
138 X509_ALGOR_free(ret);-
139-
140 return NULL;
never executed: return ((void *)0) ;
0
141}-
142-
143X509_ALGOR *PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter,-
144 unsigned char *salt, int saltlen)-
145{-
146 return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1);
never executed: return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, ((void *)0) , -1);
0
147}-
148-
149X509_ALGOR *PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen,-
150 int prf_nid, int keylen)-
151{-
152 X509_ALGOR *keyfunc = NULL;-
153 PBKDF2PARAM *kdf = NULL;-
154 ASN1_OCTET_STRING *osalt = NULL;-
155-
156 if ((kdf = PBKDF2PARAM_new()) == NULL)
(kdf = PBKDF2P...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
157 goto merr;
never executed: goto merr;
0
158 if ((osalt = ASN1_OCTET_STRING_new()) == NULL)
(osalt = ASN1_...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
159 goto merr;
never executed: goto merr;
0
160-
161 kdf->salt->value.octet_string = osalt;-
162 kdf->salt->type = V_ASN1_OCTET_STRING;-
163-
164 if (saltlen == 0)
saltlen == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
165 saltlen = PKCS5_SALT_LEN;
never executed: saltlen = 8;
0
166 if ((osalt->data = OPENSSL_malloc(saltlen)) == NULL)
(osalt->data =...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
167 goto merr;
never executed: goto merr;
0
168-
169 osalt->length = saltlen;-
170-
171 if (salt)
saltDescription
TRUEnever evaluated
FALSEnever evaluated
0
172 memcpy(osalt->data, salt, saltlen);
never executed: memcpy(osalt->data, salt, saltlen);
0
173 else if (RAND_bytes(osalt->data, saltlen) <= 0)
RAND_bytes(osa... saltlen) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
174 goto merr;
never executed: goto merr;
0
175-
176 if (iter <= 0)
iter <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
177 iter = PKCS5_DEFAULT_ITER;
never executed: iter = 2048;
0
178-
179 if (!ASN1_INTEGER_set(kdf->iter, iter))
!ASN1_INTEGER_...f->iter, iter)Description
TRUEnever evaluated
FALSEnever evaluated
0
180 goto merr;
never executed: goto merr;
0
181-
182 /* If have a key len set it up */-
183-
184 if (keylen > 0) {
keylen > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
185 if ((kdf->keylength = ASN1_INTEGER_new()) == NULL)
(kdf->keylengt...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
186 goto merr;
never executed: goto merr;
0
187 if (!ASN1_INTEGER_set(kdf->keylength, keylen))
!ASN1_INTEGER_...ength, keylen)Description
TRUEnever evaluated
FALSEnever evaluated
0
188 goto merr;
never executed: goto merr;
0
189 }
never executed: end of block
0
190-
191 /* prf can stay NULL if we are using hmacWithSHA1 */-
192 if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
prf_nid > 0Description
TRUEnever evaluated
FALSEnever evaluated
prf_nid != 163Description
TRUEnever evaluated
FALSEnever evaluated
0
193 kdf->prf = X509_ALGOR_new();-
194 if (kdf->prf == NULL)
kdf->prf == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
195 goto merr;
never executed: goto merr;
0
196 X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid), V_ASN1_NULL, NULL);-
197 }
never executed: end of block
0
198-
199 /* Finally setup the keyfunc structure */-
200-
201 keyfunc = X509_ALGOR_new();-
202 if (keyfunc == NULL)
keyfunc == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
203 goto merr;
never executed: goto merr;
0
204-
205 keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);-
206-
207 /* Encode PBKDF2PARAM into parameter of pbe2 */-
208-
209 if (!ASN1_TYPE_pack_sequence(ASN1_ITEM_rptr(PBKDF2PARAM), kdf,
!ASN1_TYPE_pac...nc->parameter)Description
TRUEnever evaluated
FALSEnever evaluated
0
210 &keyfunc->parameter))
!ASN1_TYPE_pac...nc->parameter)Description
TRUEnever evaluated
FALSEnever evaluated
0
211 goto merr;
never executed: goto merr;
0
212-
213 PBKDF2PARAM_free(kdf);-
214 return keyfunc;
never executed: return keyfunc;
0
215-
216 merr:-
217 ASN1err(ASN1_F_PKCS5_PBKDF2_SET, ERR_R_MALLOC_FAILURE);-
218 PBKDF2PARAM_free(kdf);-
219 X509_ALGOR_free(keyfunc);-
220 return NULL;
never executed: return ((void *)0) ;
0
221}-
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