move x_pubkey.c to crypto/x509

Reviewed-by: Matt Caswell <matt@openssl.org>

1 files changed, 377 insertions, 0 deletions

diff --git a/crypto/x509/x_pubkey.c b/crypto/x509/x_pubkey.c
new file mode 100644
index 0000000..158d1d2
--- /dev/null
+++ b/crypto/x509/x_pubkey.c
@@ -0,0 +1,377 @@
+/* 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 <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/asn1t.h>
+#include <openssl/x509.h>
+#include "internal/asn1_int.h"
+#include "internal/evp_int.h"
+#include <openssl/rsa.h>
+#include <openssl/dsa.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_NEW_POST) {
+        X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
+        pubkey->lock = CRYPTO_THREAD_lock_new();
+        if (pubkey->lock == NULL)
+            return 0;
+    }
+    if (operation == ASN1_OP_FREE_POST) {
+        X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval;
+        CRYPTO_THREAD_lock_free(pubkey->lock);
+        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;
+
+    if (x == NULL)
+        return (0);
+
+    if ((pk = X509_PUBKEY_new()) == NULL)
+        goto error;
+
+    if (pkey->ameth) {
+        if (pkey->ameth->pub_encode) {
+            if (!pkey->ameth->pub_encode(pk, pkey)) {
+                X509err(X509_F_X509_PUBKEY_SET,
+                        X509_R_PUBLIC_KEY_ENCODE_ERROR);
+                goto error;
+            }
+        } else {
+            X509err(X509_F_X509_PUBKEY_SET, X509_R_METHOD_NOT_SUPPORTED);
+            goto error;
+        }
+    } else {
+        X509err(X509_F_X509_PUBKEY_SET, X509_R_UNSUPPORTED_ALGORITHM);
+        goto error;
+    }
+
+    X509_PUBKEY_free(*x);
+    *x = pk;
+    return 1;
+
+ error:
+    X509_PUBKEY_free(pk);
+    return 0;
+}
+
+EVP_PKEY *X509_PUBKEY_get0(X509_PUBKEY *key)
+{
+    EVP_PKEY *ret = NULL;
+
+    if (key == NULL)
+        goto error;
+
+    if (key->pkey != NULL)
+        return key->pkey;
+
+    if (key->public_key == NULL)
+        goto error;
+
+    if ((ret = EVP_PKEY_new()) == NULL) {
+        X509err(X509_F_X509_PUBKEY_GET0, ERR_R_MALLOC_FAILURE);
+        goto error;
+    }
+
+    if (!EVP_PKEY_set_type(ret, OBJ_obj2nid(key->algor->algorithm))) {
+        X509err(X509_F_X509_PUBKEY_GET0, X509_R_UNSUPPORTED_ALGORITHM);
+        goto error;
+    }
+
+    if (ret->ameth->pub_decode) {
+        if (!ret->ameth->pub_decode(ret, key)) {
+            X509err(X509_F_X509_PUBKEY_GET0, X509_R_PUBLIC_KEY_DECODE_ERROR);
+            goto error;
+        }
+    } else {
+        X509err(X509_F_X509_PUBKEY_GET0, X509_R_METHOD_NOT_SUPPORTED);
+        goto error;
+    }
+
+    /* Check to see if another thread set key->pkey first */
+    CRYPTO_THREAD_write_lock(key->lock);
+    if (key->pkey) {
+        CRYPTO_THREAD_unlock(key->lock);
+        EVP_PKEY_free(ret);
+        ret = key->pkey;
+    } else {
+        key->pkey = ret;
+        CRYPTO_THREAD_unlock(key->lock);
+    }
+
+    return ret;
+
+ error:
+    EVP_PKEY_free(ret);
+    return (NULL);
+}
+
+EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key)
+{
+    EVP_PKEY *ret = X509_PUBKEY_get0(key);
+    if (ret != NULL)
+        EVP_PKEY_up_ref(ret);
+    return ret;
+}
+
+/*
+ * 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;
+    const unsigned char *q;
+    q = *pp;
+    xpk = d2i_X509_PUBKEY(NULL, &q, length);
+    if (!xpk)
+        return NULL;
+    pktmp = X509_PUBKEY_get(xpk);
+    X509_PUBKEY_free(xpk);
+    if (!pktmp)
+        return NULL;
+    *pp = q;
+    if (a) {
+        EVP_PKEY_free(*a);
+        *a = pktmp;
+    }
+    return pktmp;
+}
+
+int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp)
+{
+    X509_PUBKEY *xpk = NULL;
+    int ret;
+    if (!a)
+        return 0;
+    if (!X509_PUBKEY_set(&xpk, 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
+ */
+#ifndef OPENSSL_NO_RSA
+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(RSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (pktmp == NULL) {
+        ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_RSA(pktmp, a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+#endif
+
+#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(DSA *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return 0;
+    pktmp = EVP_PKEY_new();
+    if (pktmp == NULL) {
+        ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    EVP_PKEY_set1_DSA(pktmp, a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return ret;
+}
+#endif
+
+#ifndef OPENSSL_NO_EC
+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(EC_KEY *a, unsigned char **pp)
+{
+    EVP_PKEY *pktmp;
+    int ret;
+    if (!a)
+        return (0);
+    if ((pktmp = EVP_PKEY_new()) == NULL) {
+        ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    EVP_PKEY_set1_EC_KEY(pktmp, a);
+    ret = i2d_PUBKEY(pktmp, pp);
+    EVP_PKEY_free(pktmp);
+    return (ret);
+}
+#endif
+
+int X509_PUBKEY_set0_param(X509_PUBKEY *pub, 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) {
+        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;
+}