2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
12 #include <openssl/buffer.h>
13 #include <openssl/objects.h>
14 #include <openssl/evp.h>
15 #include <openssl/x509.h>
16 #include <openssl/pkcs12.h>
17 #include <openssl/pem.h>
18 #include <openssl/engine.h>
19 #include <openssl/dh.h>
20 #include "internal/asn1_int.h"
21 #include "internal/evp_int.h"
23 int pem_check_suffix(const char *pem_str, const char *suffix);
25 EVP_PKEY *PEM_read_bio_PrivateKey(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
29 const unsigned char *p = NULL;
30 unsigned char *data = NULL;
35 if (!PEM_bytes_read_bio_secmem(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp,
40 if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
41 PKCS8_PRIV_KEY_INFO *p8inf;
42 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
45 ret = EVP_PKCS82PKEY(p8inf);
47 EVP_PKEY_free((EVP_PKEY *)*x);
50 PKCS8_PRIV_KEY_INFO_free(p8inf);
51 } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
52 PKCS8_PRIV_KEY_INFO *p8inf;
55 char psbuf[PEM_BUFSIZE];
56 p8 = d2i_X509_SIG(NULL, &p, len);
60 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
62 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
64 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, PEM_R_BAD_PASSWORD_READ);
68 p8inf = PKCS8_decrypt(p8, psbuf, klen);
70 OPENSSL_cleanse(psbuf, klen);
73 ret = EVP_PKCS82PKEY(p8inf);
75 EVP_PKEY_free((EVP_PKEY *)*x);
78 PKCS8_PRIV_KEY_INFO_free(p8inf);
79 } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
80 const EVP_PKEY_ASN1_METHOD *ameth;
81 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
82 if (!ameth || !ameth->old_priv_decode)
84 ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
88 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, ERR_R_ASN1_LIB);
90 OPENSSL_secure_free(nm);
91 OPENSSL_secure_clear_free(data, len);
95 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
96 unsigned char *kstr, int klen,
97 pem_password_cb *cb, void *u)
99 if (x->ameth == NULL || x->ameth->priv_encode != NULL)
100 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
101 (char *)kstr, klen, cb, u);
102 return PEM_write_bio_PrivateKey_traditional(bp, x, enc, kstr, klen, cb, u);
105 int PEM_write_bio_PrivateKey_traditional(BIO *bp, EVP_PKEY *x,
106 const EVP_CIPHER *enc,
107 unsigned char *kstr, int klen,
108 pem_password_cb *cb, void *u)
111 BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
112 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
113 pem_str, bp, x, enc, kstr, klen, cb, u);
116 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
119 const unsigned char *p = NULL;
120 unsigned char *data = NULL;
123 EVP_PKEY *ret = NULL;
125 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
130 if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
131 ret = EVP_PKEY_new();
134 if (!EVP_PKEY_set_type_str(ret, nm, slen)
135 || !ret->ameth->param_decode
136 || !ret->ameth->param_decode(ret, &p, len)) {
142 EVP_PKEY_free((EVP_PKEY *)*x);
148 PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS, ERR_R_ASN1_LIB);
154 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
157 if (!x->ameth || !x->ameth->param_encode)
160 BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
161 return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
162 pem_str, bp, x, NULL, NULL, 0, 0, NULL);
165 #ifndef OPENSSL_NO_STDIO
166 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
172 if ((b = BIO_new(BIO_s_file())) == NULL) {
173 PEMerr(PEM_F_PEM_READ_PRIVATEKEY, ERR_R_BUF_LIB);
176 BIO_set_fp(b, fp, BIO_NOCLOSE);
177 ret = PEM_read_bio_PrivateKey(b, x, cb, u);
182 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
183 unsigned char *kstr, int klen,
184 pem_password_cb *cb, void *u)
189 if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
190 PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY, ERR_R_BUF_LIB);
193 ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
200 #ifndef OPENSSL_NO_DH
202 /* Transparently read in PKCS#3 or X9.42 DH parameters */
204 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
207 const unsigned char *p = NULL;
208 unsigned char *data = NULL;
212 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
216 if (strcmp(nm, PEM_STRING_DHXPARAMS) == 0)
217 ret = d2i_DHxparams(x, &p, len);
219 ret = d2i_DHparams(x, &p, len);
222 PEMerr(PEM_F_PEM_READ_BIO_DHPARAMS, ERR_R_ASN1_LIB);
228 # ifndef OPENSSL_NO_STDIO
229 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
234 if ((b = BIO_new(BIO_s_file())) == NULL) {
235 PEMerr(PEM_F_PEM_READ_DHPARAMS, ERR_R_BUF_LIB);
238 BIO_set_fp(b, fp, BIO_NOCLOSE);
239 ret = PEM_read_bio_DHparams(b, x, cb, u);