1 /*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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 /*
11 * DSA low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include "internal/cryptlib.h"
18 #include <openssl/bio.h>
19 #include <openssl/evp.h>
20 #include <openssl/x509.h>
21 #include <openssl/pkcs7.h>
22 #include <openssl/pem.h>
23 #include <openssl/rsa.h>
24 #include <openssl/dsa.h>
25 #include <openssl/dh.h>
26 #include "pem_local.h"
27
28 static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa);
29 #ifndef OPENSSL_NO_DSA
30 static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa);
31 #endif
32
33 #ifndef OPENSSL_NO_EC
34 static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey);
35 #endif
36
IMPLEMENT_PEM_rw(X509_REQ,X509_REQ,PEM_STRING_X509_REQ,X509_REQ)37 IMPLEMENT_PEM_rw(X509_REQ, X509_REQ, PEM_STRING_X509_REQ, X509_REQ)
38
39 IMPLEMENT_PEM_write(X509_REQ_NEW, X509_REQ, PEM_STRING_X509_REQ_OLD, X509_REQ)
40 IMPLEMENT_PEM_rw(X509_CRL, X509_CRL, PEM_STRING_X509_CRL, X509_CRL)
41 IMPLEMENT_PEM_rw(X509_PUBKEY, X509_PUBKEY, PEM_STRING_PUBLIC, X509_PUBKEY)
42 IMPLEMENT_PEM_rw(PKCS7, PKCS7, PEM_STRING_PKCS7, PKCS7)
43
44 IMPLEMENT_PEM_rw(NETSCAPE_CERT_SEQUENCE, NETSCAPE_CERT_SEQUENCE,
45 PEM_STRING_X509, NETSCAPE_CERT_SEQUENCE)
46 #ifndef OPENSSL_NO_DEPRECATED_3_0
47 /*
48 * We treat RSA or DSA private keys as a special case. For private keys we
49 * read in an EVP_PKEY structure with PEM_read_bio_PrivateKey() and extract
50 * the relevant private key: this means can handle "traditional" and PKCS#8
51 * formats transparently.
52 */
53 static RSA *pkey_get_rsa(EVP_PKEY *key, RSA **rsa)
54 {
55 RSA *rtmp;
56 if (!key)
57 return NULL;
58 rtmp = EVP_PKEY_get1_RSA(key);
59 EVP_PKEY_free(key);
60 if (!rtmp)
61 return NULL;
62 if (rsa) {
63 RSA_free(*rsa);
64 *rsa = rtmp;
65 }
66 return rtmp;
67 }
68
PEM_read_bio_RSAPrivateKey(BIO * bp,RSA ** rsa,pem_password_cb * cb,void * u)69 RSA *PEM_read_bio_RSAPrivateKey(BIO *bp, RSA **rsa, pem_password_cb *cb,
70 void *u)
71 {
72 EVP_PKEY *pktmp;
73 pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
74 return pkey_get_rsa(pktmp, rsa);
75 }
76
77 # ifndef OPENSSL_NO_STDIO
78
PEM_read_RSAPrivateKey(FILE * fp,RSA ** rsa,pem_password_cb * cb,void * u)79 RSA *PEM_read_RSAPrivateKey(FILE *fp, RSA **rsa, pem_password_cb *cb, void *u)
80 {
81 EVP_PKEY *pktmp;
82 pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
83 return pkey_get_rsa(pktmp, rsa);
84 }
85
86 # endif
87
IMPLEMENT_PEM_write_cb(RSAPrivateKey,RSA,PEM_STRING_RSA,RSAPrivateKey)88 IMPLEMENT_PEM_write_cb(RSAPrivateKey, RSA, PEM_STRING_RSA, RSAPrivateKey)
89 IMPLEMENT_PEM_rw(RSAPublicKey, RSA, PEM_STRING_RSA_PUBLIC, RSAPublicKey)
90 IMPLEMENT_PEM_rw(RSA_PUBKEY, RSA, PEM_STRING_PUBLIC, RSA_PUBKEY)
91 #endif
92 #ifndef OPENSSL_NO_DSA
93 static DSA *pkey_get_dsa(EVP_PKEY *key, DSA **dsa)
94 {
95 DSA *dtmp;
96 if (!key)
97 return NULL;
98 dtmp = EVP_PKEY_get1_DSA(key);
99 EVP_PKEY_free(key);
100 if (!dtmp)
101 return NULL;
102 if (dsa) {
103 DSA_free(*dsa);
104 *dsa = dtmp;
105 }
106 return dtmp;
107 }
108
PEM_read_bio_DSAPrivateKey(BIO * bp,DSA ** dsa,pem_password_cb * cb,void * u)109 DSA *PEM_read_bio_DSAPrivateKey(BIO *bp, DSA **dsa, pem_password_cb *cb,
110 void *u)
111 {
112 EVP_PKEY *pktmp;
113 pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
114 return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
115 }
116
IMPLEMENT_PEM_write_cb(DSAPrivateKey,DSA,PEM_STRING_DSA,DSAPrivateKey)117 IMPLEMENT_PEM_write_cb(DSAPrivateKey, DSA, PEM_STRING_DSA, DSAPrivateKey)
118 IMPLEMENT_PEM_rw(DSA_PUBKEY, DSA, PEM_STRING_PUBLIC, DSA_PUBKEY)
119 # ifndef OPENSSL_NO_STDIO
120 DSA *PEM_read_DSAPrivateKey(FILE *fp, DSA **dsa, pem_password_cb *cb, void *u)
121 {
122 EVP_PKEY *pktmp;
123 pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
124 return pkey_get_dsa(pktmp, dsa); /* will free pktmp */
125 }
126
127 # endif
128
IMPLEMENT_PEM_rw(DSAparams,DSA,PEM_STRING_DSAPARAMS,DSAparams)129 IMPLEMENT_PEM_rw(DSAparams, DSA, PEM_STRING_DSAPARAMS, DSAparams)
130 #endif
131
132 #ifndef OPENSSL_NO_DEPRECATED_3_0
133 # ifndef OPENSSL_NO_EC
134 static EC_KEY *pkey_get_eckey(EVP_PKEY *key, EC_KEY **eckey)
135 {
136 EC_KEY *dtmp;
137 if (!key)
138 return NULL;
139 dtmp = EVP_PKEY_get1_EC_KEY(key);
140 EVP_PKEY_free(key);
141 if (!dtmp)
142 return NULL;
143 if (eckey) {
144 EC_KEY_free(*eckey);
145 *eckey = dtmp;
146 }
147 return dtmp;
148 }
149
PEM_read_bio_ECPrivateKey(BIO * bp,EC_KEY ** key,pem_password_cb * cb,void * u)150 EC_KEY *PEM_read_bio_ECPrivateKey(BIO *bp, EC_KEY **key, pem_password_cb *cb,
151 void *u)
152 {
153 EVP_PKEY *pktmp;
154 pktmp = PEM_read_bio_PrivateKey(bp, NULL, cb, u);
155 return pkey_get_eckey(pktmp, key); /* will free pktmp */
156 }
157
IMPLEMENT_PEM_rw(ECPKParameters,EC_GROUP,PEM_STRING_ECPARAMETERS,ECPKParameters)158 IMPLEMENT_PEM_rw(ECPKParameters, EC_GROUP, PEM_STRING_ECPARAMETERS,
159 ECPKParameters)
160
161
162 IMPLEMENT_PEM_write_cb(ECPrivateKey, EC_KEY, PEM_STRING_ECPRIVATEKEY,
163 ECPrivateKey)
164 IMPLEMENT_PEM_rw(EC_PUBKEY, EC_KEY, PEM_STRING_PUBLIC, EC_PUBKEY)
165 # ifndef OPENSSL_NO_STDIO
166 EC_KEY *PEM_read_ECPrivateKey(FILE *fp, EC_KEY **eckey, pem_password_cb *cb,
167 void *u)
168 {
169 EVP_PKEY *pktmp;
170 pktmp = PEM_read_PrivateKey(fp, NULL, cb, u);
171 return pkey_get_eckey(pktmp, eckey); /* will free pktmp */
172 }
173 # endif
174 # endif /* !OPENSSL_NO_EC */
175 #endif /* !OPENSSL_NO_DEPRECATED_3_0 */
176
177 #ifndef OPENSSL_NO_DH
178
IMPLEMENT_PEM_write(DHparams,DH,PEM_STRING_DHPARAMS,DHparams)179 IMPLEMENT_PEM_write(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
180 IMPLEMENT_PEM_write(DHxparams, DH, PEM_STRING_DHXPARAMS, DHxparams)
181
182 /* Transparently read in PKCS#3 or X9.42 DH parameters */
183
184 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
185 {
186 char *nm = NULL;
187 const unsigned char *p = NULL;
188 unsigned char *data = NULL;
189 long len;
190 DH *ret = NULL;
191
192 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
193 return NULL;
194 p = data;
195
196 if (strcmp(nm, PEM_STRING_DHXPARAMS) == 0)
197 ret = d2i_DHxparams(x, &p, len);
198 else
199 ret = d2i_DHparams(x, &p, len);
200
201 if (ret == NULL)
202 ERR_raise(ERR_LIB_PEM, ERR_R_ASN1_LIB);
203 OPENSSL_free(nm);
204 OPENSSL_free(data);
205 return ret;
206 }
207
208 # ifndef OPENSSL_NO_STDIO
PEM_read_DHparams(FILE * fp,DH ** x,pem_password_cb * cb,void * u)209 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
210 {
211 BIO *b;
212 DH *ret;
213
214 if ((b = BIO_new(BIO_s_file())) == NULL) {
215 ERR_raise(ERR_LIB_PEM, ERR_R_BUF_LIB);
216 return 0;
217 }
218 BIO_set_fp(b, fp, BIO_NOCLOSE);
219 ret = PEM_read_bio_DHparams(b, x, cb, u);
220 BIO_free(b);
221 return ret;
222 }
223 # endif
224
225 #endif
226 IMPLEMENT_PEM_provided_write(PUBKEY, EVP_PKEY, pkey, PEM_STRING_PUBLIC, PUBKEY)
227