2 * Copyright 1995-2016 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(&data, &len, &nm, PEM_STRING_EVP_PKEY, bp, cb, u))
39 if (strcmp(nm, PEM_STRING_PKCS8INF) == 0) {
40 PKCS8_PRIV_KEY_INFO *p8inf;
41 p8inf = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, len);
44 ret = EVP_PKCS82PKEY(p8inf);
46 EVP_PKEY_free((EVP_PKEY *)*x);
49 PKCS8_PRIV_KEY_INFO_free(p8inf);
50 } else if (strcmp(nm, PEM_STRING_PKCS8) == 0) {
51 PKCS8_PRIV_KEY_INFO *p8inf;
54 char psbuf[PEM_BUFSIZE];
55 p8 = d2i_X509_SIG(NULL, &p, len);
59 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
61 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
63 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, PEM_R_BAD_PASSWORD_READ);
67 p8inf = PKCS8_decrypt(p8, psbuf, klen);
69 OPENSSL_cleanse(psbuf, klen);
72 ret = EVP_PKCS82PKEY(p8inf);
74 EVP_PKEY_free((EVP_PKEY *)*x);
77 PKCS8_PRIV_KEY_INFO_free(p8inf);
78 } else if ((slen = pem_check_suffix(nm, "PRIVATE KEY")) > 0) {
79 const EVP_PKEY_ASN1_METHOD *ameth;
80 ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
81 if (!ameth || !ameth->old_priv_decode)
83 ret = d2i_PrivateKey(ameth->pkey_id, x, &p, len);
87 PEMerr(PEM_F_PEM_READ_BIO_PRIVATEKEY, ERR_R_ASN1_LIB);
90 OPENSSL_clear_free(data, len);
94 int PEM_write_bio_PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
95 unsigned char *kstr, int klen,
96 pem_password_cb *cb, void *u)
98 if (x->ameth == NULL || x->ameth->priv_encode != NULL)
99 return PEM_write_bio_PKCS8PrivateKey(bp, x, enc,
100 (char *)kstr, klen, cb, u);
101 return PEM_write_bio_PrivateKey_traditional(bp, x, enc, kstr, klen, cb, u);
104 int PEM_write_bio_PrivateKey_traditional(BIO *bp, EVP_PKEY *x,
105 const EVP_CIPHER *enc,
106 unsigned char *kstr, int klen,
107 pem_password_cb *cb, void *u)
110 BIO_snprintf(pem_str, 80, "%s PRIVATE KEY", x->ameth->pem_str);
111 return PEM_ASN1_write_bio((i2d_of_void *)i2d_PrivateKey,
112 pem_str, bp, x, enc, kstr, klen, cb, u);
115 EVP_PKEY *PEM_read_bio_Parameters(BIO *bp, EVP_PKEY **x)
118 const unsigned char *p = NULL;
119 unsigned char *data = NULL;
122 EVP_PKEY *ret = NULL;
124 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_PARAMETERS,
129 if ((slen = pem_check_suffix(nm, "PARAMETERS")) > 0) {
130 ret = EVP_PKEY_new();
133 if (!EVP_PKEY_set_type_str(ret, nm, slen)
134 || !ret->ameth->param_decode
135 || !ret->ameth->param_decode(ret, &p, len)) {
141 EVP_PKEY_free((EVP_PKEY *)*x);
147 PEMerr(PEM_F_PEM_READ_BIO_PARAMETERS, ERR_R_ASN1_LIB);
153 int PEM_write_bio_Parameters(BIO *bp, EVP_PKEY *x)
156 if (!x->ameth || !x->ameth->param_encode)
159 BIO_snprintf(pem_str, 80, "%s PARAMETERS", x->ameth->pem_str);
160 return PEM_ASN1_write_bio((i2d_of_void *)x->ameth->param_encode,
161 pem_str, bp, x, NULL, NULL, 0, 0, NULL);
164 #ifndef OPENSSL_NO_STDIO
165 EVP_PKEY *PEM_read_PrivateKey(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
171 if ((b = BIO_new(BIO_s_file())) == NULL) {
172 PEMerr(PEM_F_PEM_READ_PRIVATEKEY, ERR_R_BUF_LIB);
175 BIO_set_fp(b, fp, BIO_NOCLOSE);
176 ret = PEM_read_bio_PrivateKey(b, x, cb, u);
181 int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
182 unsigned char *kstr, int klen,
183 pem_password_cb *cb, void *u)
188 if ((b = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
189 PEMerr(PEM_F_PEM_WRITE_PRIVATEKEY, ERR_R_BUF_LIB);
192 ret = PEM_write_bio_PrivateKey(b, x, enc, kstr, klen, cb, u);
199 #ifndef OPENSSL_NO_DH
201 /* Transparently read in PKCS#3 or X9.42 DH parameters */
203 DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
206 const unsigned char *p = NULL;
207 unsigned char *data = NULL;
211 if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS, bp, cb, u))
215 if (strcmp(nm, PEM_STRING_DHXPARAMS) == 0)
216 ret = d2i_DHxparams(x, &p, len);
218 ret = d2i_DHparams(x, &p, len);
221 PEMerr(PEM_F_PEM_READ_BIO_DHPARAMS, ERR_R_ASN1_LIB);
227 # ifndef OPENSSL_NO_STDIO
228 DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
233 if ((b = BIO_new(BIO_s_file())) == NULL) {
234 PEMerr(PEM_F_PEM_READ_DHPARAMS, ERR_R_BUF_LIB);
237 BIO_set_fp(b, fp, BIO_NOCLOSE);
238 ret = PEM_read_bio_DHparams(b, x, cb, u);