2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
12 #include <openssl/core_dispatch.h>
13 #include <openssl/buffer.h>
14 #include <openssl/objects.h>
15 #include <openssl/evp.h>
16 #include <openssl/x509.h>
17 #include <openssl/pkcs12.h>
18 #include <openssl/pem.h>
19 #include <openssl/encoder.h>
21 static int do_pk8pkey(BIO *bp, const EVP_PKEY *x, int isder,
22 int nid, const EVP_CIPHER *enc,
23 const char *kstr, int klen,
24 pem_password_cb *cb, void *u,
27 #ifndef OPENSSL_NO_STDIO
28 static int do_pk8pkey_fp(FILE *bp, const EVP_PKEY *x, int isder,
29 int nid, const EVP_CIPHER *enc,
30 const char *kstr, int klen,
31 pem_password_cb *cb, void *u,
35 * These functions write a private key in PKCS#8 format: it is a "drop in"
36 * replacement for PEM_write_bio_PrivateKey() and friends. As usual if 'enc'
37 * is NULL then it uses the unencrypted private key form. The 'nid' versions
38 * uses PKCS#5 v1.5 PBE algorithms whereas the others use PKCS#5 v2.0.
41 int PEM_write_bio_PKCS8PrivateKey_nid(BIO *bp, const EVP_PKEY *x, int nid,
42 const char *kstr, int klen,
43 pem_password_cb *cb, void *u)
45 return do_pk8pkey(bp, x, 0, nid, NULL, kstr, klen, cb, u, NULL);
48 int PEM_write_bio_PKCS8PrivateKey(BIO *bp, const EVP_PKEY *x, const EVP_CIPHER *enc,
49 const char *kstr, int klen,
50 pem_password_cb *cb, void *u)
52 return do_pk8pkey(bp, x, 0, -1, enc, kstr, klen, cb, u, NULL);
55 int i2d_PKCS8PrivateKey_bio(BIO *bp, const EVP_PKEY *x, const EVP_CIPHER *enc,
56 const char *kstr, int klen,
57 pem_password_cb *cb, void *u)
59 return do_pk8pkey(bp, x, 1, -1, enc, kstr, klen, cb, u, NULL);
62 int i2d_PKCS8PrivateKey_nid_bio(BIO *bp, const EVP_PKEY *x, int nid,
63 const char *kstr, int klen,
64 pem_password_cb *cb, void *u)
66 return do_pk8pkey(bp, x, 1, nid, NULL, kstr, klen, cb, u, NULL);
69 static int do_pk8pkey(BIO *bp, const EVP_PKEY *x, int isder, int nid,
70 const EVP_CIPHER *enc, const char *kstr, int klen,
71 pem_password_cb *cb, void *u, const char *propq)
74 const char *outtype = isder ? "DER" : "PEM";
75 OSSL_ENCODER_CTX *ctx =
76 OSSL_ENCODER_CTX_new_by_EVP_PKEY(x, OSSL_KEYMGMT_SELECT_ALL,
77 outtype, "pkcs8", propq);
83 * If no keystring or callback is set, OpenSSL traditionally uses the
84 * user's cb argument as a password string, or if that's NULL, it falls
85 * back on PEM_def_callback().
87 if (kstr == NULL && cb == NULL) {
92 cb = PEM_def_callback;
96 if (OSSL_ENCODER_CTX_get_num_encoders(ctx) != 0) {
100 if (OSSL_ENCODER_CTX_set_cipher(ctx, EVP_CIPHER_name(enc), NULL)) {
101 const unsigned char *ukstr = (const unsigned char *)kstr;
104 * Try to pass the passphrase if one was given, or the
105 * passphrase callback if one was given. If none of them
106 * are given and that's wrong, we rely on the _to_bio()
107 * call to generate errors.
111 && !OSSL_ENCODER_CTX_set_passphrase(ctx, ukstr, klen))
114 && !OSSL_ENCODER_CTX_set_pem_password_cb(ctx, cb, u))
118 ret = ret && OSSL_ENCODER_to_bio(ctx, bp);
121 PKCS8_PRIV_KEY_INFO *p8inf;
122 char buf[PEM_BUFSIZE];
125 if ((p8inf = EVP_PKEY2PKCS8(x)) == NULL) {
126 ERR_raise(ERR_LIB_PEM, PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
129 if (enc || (nid != -1)) {
131 klen = cb(buf, PEM_BUFSIZE, 1, u);
133 ERR_raise(ERR_LIB_PEM, PEM_R_READ_KEY);
139 p8 = PKCS8_encrypt(nid, enc, kstr, klen, NULL, 0, 0, p8inf);
141 OPENSSL_cleanse(buf, klen);
145 ret = i2d_PKCS8_bio(bp, p8);
147 ret = PEM_write_bio_PKCS8(bp, p8);
151 ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
153 ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
156 PKCS8_PRIV_KEY_INFO_free(p8inf);
158 OSSL_ENCODER_CTX_free(ctx);
162 EVP_PKEY *d2i_PKCS8PrivateKey_bio(BIO *bp, EVP_PKEY **x, pem_password_cb *cb,
165 PKCS8_PRIV_KEY_INFO *p8inf = NULL;
169 char psbuf[PEM_BUFSIZE];
171 p8 = d2i_PKCS8_bio(bp, NULL);
175 klen = cb(psbuf, PEM_BUFSIZE, 0, u);
177 klen = PEM_def_callback(psbuf, PEM_BUFSIZE, 0, u);
179 ERR_raise(ERR_LIB_PEM, PEM_R_BAD_PASSWORD_READ);
183 p8inf = PKCS8_decrypt(p8, psbuf, klen);
185 OPENSSL_cleanse(psbuf, klen);
188 ret = EVP_PKCS82PKEY(p8inf);
189 PKCS8_PRIV_KEY_INFO_free(p8inf);
199 #ifndef OPENSSL_NO_STDIO
201 int i2d_PKCS8PrivateKey_fp(FILE *fp, const EVP_PKEY *x, const EVP_CIPHER *enc,
202 const char *kstr, int klen,
203 pem_password_cb *cb, void *u)
205 return do_pk8pkey_fp(fp, x, 1, -1, enc, kstr, klen, cb, u, NULL);
208 int i2d_PKCS8PrivateKey_nid_fp(FILE *fp, const EVP_PKEY *x, int nid,
209 const char *kstr, int klen,
210 pem_password_cb *cb, void *u)
212 return do_pk8pkey_fp(fp, x, 1, nid, NULL, kstr, klen, cb, u, NULL);
215 int PEM_write_PKCS8PrivateKey_nid(FILE *fp, const EVP_PKEY *x, int nid,
216 const char *kstr, int klen,
217 pem_password_cb *cb, void *u)
219 return do_pk8pkey_fp(fp, x, 0, nid, NULL, kstr, klen, cb, u, NULL);
222 int PEM_write_PKCS8PrivateKey(FILE *fp, const EVP_PKEY *x, const EVP_CIPHER *enc,
223 const char *kstr, int klen,
224 pem_password_cb *cb, void *u)
226 return do_pk8pkey_fp(fp, x, 0, -1, enc, kstr, klen, cb, u, NULL);
229 static int do_pk8pkey_fp(FILE *fp, const EVP_PKEY *x, int isder, int nid,
230 const EVP_CIPHER *enc, const char *kstr, int klen,
231 pem_password_cb *cb, void *u, const char *propq)
236 if ((bp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
237 ERR_raise(ERR_LIB_PEM, ERR_R_BUF_LIB);
240 ret = do_pk8pkey(bp, x, isder, nid, enc, kstr, klen, cb, u, propq);
245 EVP_PKEY *d2i_PKCS8PrivateKey_fp(FILE *fp, EVP_PKEY **x, pem_password_cb *cb,
251 if ((bp = BIO_new_fp(fp, BIO_NOCLOSE)) == NULL) {
252 ERR_raise(ERR_LIB_PEM, ERR_R_BUF_LIB);
255 ret = d2i_PKCS8PrivateKey_bio(bp, x, cb, u);
262 IMPLEMENT_PEM_rw(PKCS8, X509_SIG, PEM_STRING_PKCS8, X509_SIG)
265 IMPLEMENT_PEM_rw(PKCS8_PRIV_KEY_INFO, PKCS8_PRIV_KEY_INFO, PEM_STRING_PKCS8INF,