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authormarha <marha@users.sourceforge.net>2010-03-30 12:36:28 +0000
committermarha <marha@users.sourceforge.net>2010-03-30 12:36:28 +0000
commitff48c0d9098080b51ea12710029135916d117806 (patch)
tree96e6af9caf170ba21a1027b24e306a07e27d7b75 /openssl/crypto/hmac/hm_ameth.c
parentbb731f5ac92655c4860a41fa818a7a63005f8369 (diff)
downloadvcxsrv-ff48c0d9098080b51ea12710029135916d117806.tar.gz
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svn merge -r514:HEAD ^/branches/released .
Diffstat (limited to 'openssl/crypto/hmac/hm_ameth.c')
-rw-r--r--openssl/crypto/hmac/hm_ameth.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/openssl/crypto/hmac/hm_ameth.c b/openssl/crypto/hmac/hm_ameth.c
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+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2007.
+ */
+/* ====================================================================
+ * Copyright (c) 2007 The OpenSSL Project. All rights reserved.
+ *
+ * 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 above 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 acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED 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 OpenSSL PROJECT OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/evp.h>
+#include "asn1_locl.h"
+
+#define HMAC_TEST_PRIVATE_KEY_FORMAT
+
+/* HMAC "ASN1" method. This is just here to indicate the
+ * maximum HMAC output length and to free up an HMAC
+ * key.
+ */
+
+static int hmac_size(const EVP_PKEY *pkey)
+ {
+ return EVP_MAX_MD_SIZE;
+ }
+
+static void hmac_key_free(EVP_PKEY *pkey)
+ {
+ ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr;
+ if (os)
+ {
+ if (os->data)
+ OPENSSL_cleanse(os->data, os->length);
+ ASN1_OCTET_STRING_free(os);
+ }
+ }
+
+
+static int hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
+ {
+ switch (op)
+ {
+ case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+ *(int *)arg2 = NID_sha1;
+ return 1;
+
+ default:
+ return -2;
+ }
+ }
+
+#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
+/* A bogus private key format for test purposes. This is simply the
+ * HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the
+ * genpkey utility can be used to "generate" HMAC keys.
+ */
+
+static int old_hmac_decode(EVP_PKEY *pkey,
+ const unsigned char **pder, int derlen)
+ {
+ ASN1_OCTET_STRING *os;
+ os = ASN1_OCTET_STRING_new();
+ if (!os || !ASN1_OCTET_STRING_set(os, *pder, derlen))
+ return 0;
+ EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os);
+ return 1;
+ }
+
+static int old_hmac_encode(const EVP_PKEY *pkey, unsigned char **pder)
+ {
+ int inc;
+ ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr;
+ if (pder)
+ {
+ if (!*pder)
+ {
+ *pder = OPENSSL_malloc(os->length);
+ inc = 0;
+ }
+ else inc = 1;
+
+ memcpy(*pder, os->data, os->length);
+
+ if (inc)
+ *pder += os->length;
+ }
+
+ return os->length;
+ }
+
+#endif
+
+const EVP_PKEY_ASN1_METHOD hmac_asn1_meth =
+ {
+ EVP_PKEY_HMAC,
+ EVP_PKEY_HMAC,
+ 0,
+
+ "HMAC",
+ "OpenSSL HMAC method",
+
+ 0,0,0,0,
+
+ 0,0,0,
+
+ hmac_size,
+ 0,
+ 0,0,0,0,0,0,
+
+ hmac_key_free,
+ hmac_pkey_ctrl,
+#ifdef HMAC_TEST_PRIVATE_KEY_FORMAT
+ old_hmac_decode,
+ old_hmac_encode
+#else
+ 0,0
+#endif
+ };
+