--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/x509.h>
+
+#include <limits.h>
+
+#include <openssl/asn1.h>
+#include <openssl/asn1t.h>
+#include <openssl/bytestring.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/thread.h>
+
+#include "../internal.h"
+
+/* Minor tweak to operation: free up EVP_PKEY */
+static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
+ void *exarg)
+{
+ if (operation == ASN1_OP_FREE_POST) {
+ X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
+ EVP_PKEY_free(pubkey->pkey);
+ }
+ return 1;
+}
+
+ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = {
+ ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR),
+ ASN1_SIMPLE(X509_PUBKEY, public_key, ASN1_BIT_STRING)
+} ASN1_SEQUENCE_END_cb(X509_PUBKEY, X509_PUBKEY)
+
+IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY)
+
+int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey)
+{
+ X509_PUBKEY *pk = NULL;
+ uint8_t *spki = NULL;
+ size_t spki_len;
+
+ if (x == NULL)
+ return (0);
+
+ CBB cbb;
+ if (!CBB_init(&cbb, 0) ||
+ !EVP_marshal_public_key(&cbb, pkey) ||
+ !CBB_finish(&cbb, &spki, &spki_len) ||
+ spki_len > LONG_MAX) {
+ CBB_cleanup(&cbb);
+ OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_ENCODE_ERROR);
+ goto error;
+ }
+
+ const uint8_t *p = spki;
+ pk = d2i_X509_PUBKEY(NULL, &p, (long)spki_len);
+ if (pk == NULL || p != spki + spki_len) {
+ OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+ goto error;
+ }
+
+ OPENSSL_free(spki);
+ X509_PUBKEY_free(*x);
+ *x = pk;
+
+ return 1;
+ error:
+ X509_PUBKEY_free(pk);
+ OPENSSL_free(spki);
+ return 0;
+}
+
+/* g_pubkey_lock is used to protect the initialisation of the |pkey| member of
+ * |X509_PUBKEY| objects. Really |X509_PUBKEY| should have a |CRYPTO_once_t|
+ * inside it for this, but |CRYPTO_once_t| is private and |X509_PUBKEY| is
+ * not. */
+static struct CRYPTO_STATIC_MUTEX g_pubkey_lock = CRYPTO_STATIC_MUTEX_INIT;
+
+EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
+{
+ EVP_PKEY *ret = NULL;
+ uint8_t *spki = NULL;
+
+ if (key == NULL)
+ goto error;
+
+ CRYPTO_STATIC_MUTEX_lock_read(&g_pubkey_lock);
+ if (key->pkey != NULL) {
+ CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+ EVP_PKEY_up_ref(key->pkey);
+ return key->pkey;
+ }
+ CRYPTO_STATIC_MUTEX_unlock_read(&g_pubkey_lock);
+
+ /* Re-encode the |X509_PUBKEY| to DER and parse it. */
+ int spki_len = i2d_X509_PUBKEY(key, &spki);
+ if (spki_len < 0) {
+ goto error;
+ }
+ CBS cbs;
+ CBS_init(&cbs, spki, (size_t)spki_len);
+ ret = EVP_parse_public_key(&cbs);
+ if (ret == NULL || CBS_len(&cbs) != 0) {
+ OPENSSL_PUT_ERROR(X509, X509_R_PUBLIC_KEY_DECODE_ERROR);
+ goto error;
+ }
+
+ /* Check to see if another thread set key->pkey first */
+ CRYPTO_STATIC_MUTEX_lock_write(&g_pubkey_lock);
+ if (key->pkey) {
+ CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+ EVP_PKEY_free(ret);
+ ret = key->pkey;
+ } else {
+ key->pkey = ret;
+ CRYPTO_STATIC_MUTEX_unlock_write(&g_pubkey_lock);
+ }
+
+ OPENSSL_free(spki);
+ EVP_PKEY_up_ref(ret);
+ return ret;
+
+ error:
+ OPENSSL_free(spki);
+ EVP_PKEY_free(ret);
+ return NULL;
+}
+
+/*
+ * Now two pseudo ASN1 routines that take an EVP_PKEY structure and encode or
+ * decode as X509_PUBKEY
+ */
+
+EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length)
+{
+ X509_PUBKEY *xpk;
+ EVP_PKEY *pktmp;
+ xpk = d2i_X509_PUBKEY(NULL, pp, length);
+ if (!xpk)
+ return NULL;
+ pktmp = X509_PUBKEY_get(xpk);
+ X509_PUBKEY_free(xpk);
+ if (!pktmp)
+ return NULL;
+ if (a) {
+ EVP_PKEY_free(*a);
+ *a = pktmp;
+ }
+ return pktmp;
+}
+
+int i2d_PUBKEY(const EVP_PKEY *a, unsigned char **pp)
+{
+ X509_PUBKEY *xpk = NULL;
+ int ret;
+ if (!a)
+ return 0;
+ if (!X509_PUBKEY_set(&xpk, (EVP_PKEY *)a))
+ return 0;
+ ret = i2d_X509_PUBKEY(xpk, pp);
+ X509_PUBKEY_free(xpk);
+ return ret;
+}
+
+/*
+ * The following are equivalents but which return RSA and DSA keys
+ */
+RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length)
+{
+ EVP_PKEY *pkey;
+ RSA *key;
+ const unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey)
+ return NULL;
+ key = EVP_PKEY_get1_RSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key)
+ return NULL;
+ *pp = q;
+ if (a) {
+ RSA_free(*a);
+ *a = key;
+ }
+ return key;
+}
+
+int i2d_RSA_PUBKEY(const RSA *a, unsigned char **pp)
+{
+ EVP_PKEY *pktmp;
+ int ret;
+ if (!a)
+ return 0;
+ pktmp = EVP_PKEY_new();
+ if (!pktmp) {
+ OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ EVP_PKEY_set1_RSA(pktmp, (RSA *)a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return ret;
+}
+
+#ifndef OPENSSL_NO_DSA
+DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length)
+{
+ EVP_PKEY *pkey;
+ DSA *key;
+ const unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey)
+ return NULL;
+ key = EVP_PKEY_get1_DSA(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key)
+ return NULL;
+ *pp = q;
+ if (a) {
+ DSA_free(*a);
+ *a = key;
+ }
+ return key;
+}
+
+int i2d_DSA_PUBKEY(const DSA *a, unsigned char **pp)
+{
+ EVP_PKEY *pktmp;
+ int ret;
+ if (!a)
+ return 0;
+ pktmp = EVP_PKEY_new();
+ if (!pktmp) {
+ OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ EVP_PKEY_set1_DSA(pktmp, (DSA *)a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return ret;
+}
+#endif
+
+EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length)
+{
+ EVP_PKEY *pkey;
+ EC_KEY *key;
+ const unsigned char *q;
+ q = *pp;
+ pkey = d2i_PUBKEY(NULL, &q, length);
+ if (!pkey)
+ return (NULL);
+ key = EVP_PKEY_get1_EC_KEY(pkey);
+ EVP_PKEY_free(pkey);
+ if (!key)
+ return (NULL);
+ *pp = q;
+ if (a) {
+ EC_KEY_free(*a);
+ *a = key;
+ }
+ return (key);
+}
+
+int i2d_EC_PUBKEY(const EC_KEY *a, unsigned char **pp)
+{
+ EVP_PKEY *pktmp;
+ int ret;
+ if (!a)
+ return (0);
+ if ((pktmp = EVP_PKEY_new()) == NULL) {
+ OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
+ return (0);
+ }
+ EVP_PKEY_set1_EC_KEY(pktmp, (EC_KEY *)a);
+ ret = i2d_PUBKEY(pktmp, pp);
+ EVP_PKEY_free(pktmp);
+ return (ret);
+}
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, const ASN1_OBJECT *aobj,
+ int ptype, void *pval,
+ unsigned char *penc, int penclen)
+{
+ if (!X509_ALGOR_set0(pub->algor, aobj, ptype, pval))
+ return 0;
+ if (penc) {
+ if (pub->public_key->data)
+ OPENSSL_free(pub->public_key->data);
+ pub->public_key->data = penc;
+ pub->public_key->length = penclen;
+ /* Set number of unused bits to zero */
+ pub->public_key->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ pub->public_key->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ }
+ return 1;
+}
+
+int X509_PUBKEY_get0_param(ASN1_OBJECT **ppkalg,
+ const unsigned char **pk, int *ppklen,
+ X509_ALGOR **pa, X509_PUBKEY *pub)
+{
+ if (ppkalg)
+ *ppkalg = pub->algor->algorithm;
+ if (pk) {
+ *pk = pub->public_key->data;
+ *ppklen = pub->public_key->length;
+ }
+ if (pa)
+ *pa = pub->algor;
+ return 1;
+}