Changes between 1.0.0 and 1.1.0 [xx XXX xxxx]
*) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
+ Add CMAC pkey methods.
[Steve Henson]
*) Experiemental regnegotiation in s_server -www mode. If the client
extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
+extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
/* Keep this sorted in type order !! */
static const EVP_PKEY_ASN1_METHOD *standard_methods[] =
#ifndef OPENSSL_NO_EC
&eckey_asn1_meth,
#endif
- &hmac_asn1_meth
+ &hmac_asn1_meth,
+ &cmac_asn1_meth
};
typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
APPS=
LIB=$(TOP)/libcrypto.a
-LIBSRC=cmac.c
-LIBOBJ=cmac.o
+LIBSRC=cmac.c cm_ameth.c cm_pmeth.c
+LIBOBJ=cmac.o cm_ameth.o cm_pmeth.o
SRC= $(LIBSRC)
--- /dev/null
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2010.
+ */
+/* ====================================================================
+ * Copyright (c) 2010 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 <openssl/cmac.h>
+#include "asn1_locl.h"
+
+/* CMAC "ASN1" method. This is just here to indicate the
+ * maximum CMAC output length and to free up a CMAC
+ * key.
+ */
+
+static int cmac_size(const EVP_PKEY *pkey)
+ {
+ return EVP_MAX_BLOCK_LENGTH;
+ }
+
+static void cmac_key_free(EVP_PKEY *pkey)
+ {
+ CMAC_CTX *cmctx = (CMAC_CTX *)pkey->pkey.ptr;
+ if (cmctx)
+ CMAC_CTX_free(cmctx);
+ }
+
+const EVP_PKEY_ASN1_METHOD cmac_asn1_meth =
+ {
+ EVP_PKEY_CMAC,
+ EVP_PKEY_CMAC,
+ 0,
+
+ "CMAC",
+ "OpenSSL CMAC method",
+
+ 0,0,0,0,
+
+ 0,0,0,
+
+ cmac_size,
+ 0,
+ 0,0,0,0,0,0,
+
+ cmac_key_free,
+ 0,
+ 0,0
+ };
+
--- /dev/null
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 2010.
+ */
+/* ====================================================================
+ * Copyright (c) 2010 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/x509.h>
+#include <openssl/x509v3.h>
+#include <openssl/evp.h>
+#include <openssl/cmac.h>
+#include "evp_locl.h"
+
+/* The context structure and "key" is simply a CMAC_CTX */
+
+static int pkey_cmac_init(EVP_PKEY_CTX *ctx)
+ {
+ ctx->data = CMAC_CTX_new();
+ if (!ctx->data)
+ return 0;
+ ctx->keygen_info_count = 0;
+ return 1;
+ }
+
+static int pkey_cmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
+ {
+ if (!pkey_cmac_init(dst))
+ return 0;
+ if (!CMAC_CTX_copy(dst->data, src->data))
+ return 0;
+ return 1;
+ }
+
+static void pkey_cmac_cleanup(EVP_PKEY_CTX *ctx)
+ {
+ CMAC_CTX_free(ctx->data);
+ }
+
+static int pkey_cmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
+ {
+ CMAC_CTX *cmkey = CMAC_CTX_new();
+ CMAC_CTX *cmctx = ctx->data;
+ if (!cmkey)
+ return 0;
+ if (!CMAC_CTX_copy(cmkey, cmctx))
+ {
+ CMAC_CTX_free(cmkey);
+ return 0;
+ }
+ EVP_PKEY_assign(pkey, EVP_PKEY_CMAC, cmkey);
+
+ return 1;
+ }
+
+static int int_update(EVP_MD_CTX *ctx,const void *data,size_t count)
+ {
+ if (!CMAC_Update(ctx->pctx->data, data, count))
+ return 0;
+ return 1;
+ }
+
+static int cmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
+ {
+ EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
+ mctx->update = int_update;
+ return 1;
+ }
+
+static int cmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
+ EVP_MD_CTX *mctx)
+ {
+ return CMAC_Final(ctx->data, sig, siglen);
+ }
+
+static int pkey_cmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
+ {
+ CMAC_CTX *cmctx = ctx->data;
+ switch (type)
+ {
+
+ case EVP_PKEY_CTRL_SET_MAC_KEY:
+ if (!p2 || p1 < 0)
+ return 0;
+ if (!CMAC_Init(cmctx, p2, p1, NULL, NULL))
+ return 0;
+ break;
+
+ case EVP_PKEY_CTRL_CIPHER:
+ if (!CMAC_Init(cmctx, NULL, 0, p2, NULL))
+ return 0;
+ break;
+
+ case EVP_PKEY_CTRL_MD:
+ if (ctx->pkey && !CMAC_CTX_copy(ctx->data,
+ (CMAC_CTX *)ctx->pkey->pkey.ptr))
+ return 0;
+ if (!CMAC_Init(cmctx, NULL, 0, NULL, NULL))
+ return 0;
+ break;
+
+ default:
+ return -2;
+
+ }
+ return 1;
+ }
+
+static int pkey_cmac_ctrl_str(EVP_PKEY_CTX *ctx,
+ const char *type, const char *value)
+ {
+ if (!value)
+ {
+ return 0;
+ }
+ if (!strcmp(type, "key"))
+ {
+ void *p = (void *)value;
+ return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY,
+ strlen(p), p);
+ }
+ if (!strcmp(type, "cipher"))
+ {
+ const EVP_CIPHER *c;
+ c = EVP_get_cipherbyname(value);
+ if (!c)
+ return 0;
+ return pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_CIPHER, -1, (void *)c);
+ }
+ if (!strcmp(type, "hexkey"))
+ {
+ unsigned char *key;
+ int r;
+ long keylen;
+ key = string_to_hex(value, &keylen);
+ if (!key)
+ return 0;
+ r = pkey_cmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
+ OPENSSL_free(key);
+ return r;
+ }
+ return -2;
+ }
+
+const EVP_PKEY_METHOD cmac_pkey_meth =
+ {
+ EVP_PKEY_CMAC,
+ EVP_PKEY_FLAG_SIGCTX_CUSTOM,
+ pkey_cmac_init,
+ pkey_cmac_copy,
+ pkey_cmac_cleanup,
+
+ 0, 0,
+
+ 0,
+ pkey_cmac_keygen,
+
+ 0, 0,
+
+ 0, 0,
+
+ 0,0,
+
+ cmac_signctx_init,
+ cmac_signctx,
+
+ 0,0,
+
+ 0,0,
+
+ 0,0,
+
+ 0,0,
+
+ pkey_cmac_ctrl,
+ pkey_cmac_ctrl_str
+
+ };
OPENSSL_free(ctx);
}
+int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in)
+ {
+ int bl;
+ if (in->nlast_block == -1)
+ return 0;
+ if (!EVP_CIPHER_CTX_copy(&out->cctx, &in->cctx))
+ return 0;
+ bl = EVP_CIPHER_CTX_block_size(&in->cctx);
+ memcpy(out->k1, in->k1, bl);
+ memcpy(out->k2, in->k2, bl);
+ memcpy(out->tbl, in->tbl, bl);
+ memcpy(out->last_block, in->last_block, bl);
+ out->nlast_block = in->nlast_block;
+ return 1;
+ }
+
int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
const EVP_CIPHER *cipher, ENGINE *impl)
{
if (!key && !cipher && !impl && keylen == 0)
{
/* Not initialised */
- if (ctx->last_block == -1)
+ if (ctx->nlast_block == -1)
return 0;
if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
return 0;
- return 0;
+ return 1;
}
/* Initialiase context */
if (cipher && !EVP_EncryptInit_ex(&ctx->cctx, cipher, impl, NULL, NULL))
/* Reset context again ready for first data block */
if (!EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, zero_iv))
return 0;
+ /* Zero tbl so resume works */
+ memset(ctx->tbl, 0, bl);
ctx->nlast_block = 0;
}
return 1;
}
-size_t CMAC_Final(CMAC_CTX *ctx, unsigned char *out)
+int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen)
{
int i, bl, lb;
if (ctx->nlast_block == -1)
return 0;
bl = EVP_CIPHER_CTX_block_size(&ctx->cctx);
+ *poutlen = (size_t)bl;
+ if (!out)
+ return 1;
lb = ctx->nlast_block;
/* Is last block complete? */
if (lb == bl)
{
for (i = 0; i < bl; i++)
- ctx->last_block[i] ^= ctx->k1[i];
+ out[i] = ctx->last_block[i] ^ ctx->k1[i];
}
else
{
if (bl - lb > 1)
memset(ctx->last_block + lb + 1, 0, bl - lb - 1);
for (i = 0; i < bl; i++)
- ctx->last_block[i] ^= ctx->k2[i];
+ out[i] = ctx->last_block[i] ^ ctx->k2[i];
}
- if (!EVP_Cipher(&ctx->cctx, out, ctx->last_block, bl))
+ if (!EVP_Cipher(&ctx->cctx, out, out, bl))
+ {
+ OPENSSL_cleanse(out, bl);
+ return 0;
+ }
+ return 1;
+ }
+
+int CMAC_resume(CMAC_CTX *ctx)
+ {
+ if (ctx->nlast_block == -1)
return 0;
- return bl;
+ /* The buffer "tbl" containes the last fully encrypted block
+ * which is the last IV (or all zeroes if no last encrypted block).
+ * The last block has not been modified since CMAC_final().
+ * So reinitliasing using the last decrypted block will allow
+ * CMAC to continue after calling CMAC_Final().
+ */
+ return EVP_EncryptInit_ex(&ctx->cctx, NULL, NULL, NULL, ctx->tbl);
}
void CMAC_CTX_cleanup(CMAC_CTX *ctx);
void CMAC_CTX_free(CMAC_CTX *ctx);
EVP_CIPHER_CTX *CMAC_CTX_get0_cipher_ctx(CMAC_CTX *ctx);
+int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in);
int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
const EVP_CIPHER *cipher, ENGINE *impl);
int CMAC_Update(CMAC_CTX *ctx, const void *data, size_t dlen);
-int CMAC_Final(CMAC_CTX *ctx, unsigned char *out);
+int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen);
+int CMAC_resume(CMAC_CTX *ctx);
#ifdef __cplusplus
}
#define EVP_PKEY_DH NID_dhKeyAgreement
#define EVP_PKEY_EC NID_X9_62_id_ecPublicKey
#define EVP_PKEY_HMAC NID_hmac
+#define EVP_PKEY_CMAC NID_cmac
#ifdef __cplusplus
extern "C" {
#define EVP_PKEY_CTRL_CMS_DECRYPT 10
#define EVP_PKEY_CTRL_CMS_SIGN 11
+#define EVP_PKEY_CTRL_CIPHER 12
+
#define EVP_PKEY_ALG_CTRL 0x1000
#define EVP_PKEY_FLAG_AUTOARGLEN 2
+/* Method handles all operations: don't assume any digest related
+ * defaults.
+ */
+#define EVP_PKEY_FLAG_SIGCTX_CUSTOM 4
const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type);
EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags);
if (ctx->pctx == NULL)
return 0;
- if (type == NULL)
+ if (!(ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM))
{
- int def_nid;
- if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
- type = EVP_get_digestbynid(def_nid);
- }
- if (type == NULL)
- {
- EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
- return 0;
+ if (type == NULL)
+ {
+ int def_nid;
+ if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
+ type = EVP_get_digestbynid(def_nid);
+ }
+
+ if (type == NULL)
+ {
+ EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
+ return 0;
+ }
}
if (ver)
}
if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
return 0;
- if (pctx)
- *pctx = ctx->pctx;
+ if (ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+ return 1;
if (!EVP_DigestInit_ex(ctx, type, e))
return 0;
return 1;
int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
{
int sctx, r = 0;
- if (ctx->pctx->pmeth->signctx)
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+ if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+ {
+ EVP_PKEY_CTX *dctx;
+ if (!sigret)
+ return pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ dctx = EVP_PKEY_CTX_dup(ctx->pctx);
+ if (!dctx)
+ return 0;
+ r = dctx->pmeth->signctx(dctx, sigret, siglen, ctx);
+ EVP_PKEY_CTX_free(dctx);
+ return r;
+ }
+ if (pctx->pmeth->signctx)
sctx = 1;
else
sctx = 0;
{
if (sctx)
{
- if (ctx->pctx->pmeth->signctx(ctx->pctx, sigret, siglen, ctx) <= 0)
+ if (pctx->pmeth->signctx(pctx, sigret, siglen, ctx) <= 0)
return 0;
}
else
{
int s = EVP_MD_size(ctx->digest);
- if (s < 0 || EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL, s) <= 0)
+ if (s < 0 || EVP_PKEY_sign(pctx, sigret, siglen, NULL, s) <= 0)
return 0;
}
}
STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
-extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth;
+extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth, cmac_pkey_meth;
static const EVP_PKEY_METHOD *standard_methods[] =
{
&ec_pkey_meth,
#endif
&hmac_pkey_meth,
+ &cmac_pkey_meth
};
DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
* [including the GNU Public Licence.]
*/
-#define NUM_NID 894
-#define NUM_SN 887
-#define NUM_LN 887
+#define NUM_NID 895
+#define NUM_SN 888
+#define NUM_LN 888
#define NUM_OBJ 841
static const unsigned char lvalues[5835]={
{"dmdName","dmdName",NID_dmdName,3,&(lvalues[5820]),0},
{"id-alg-PWRI-KEK","id-alg-PWRI-KEK",NID_id_alg_PWRI_KEK,11,
&(lvalues[5823]),0},
+{"CMAC","cmac",NID_cmac,0,NULL,0},
};
static const unsigned int sn_objs[NUM_SN]={
110, /* "CAST5-CFB" */
109, /* "CAST5-ECB" */
111, /* "CAST5-OFB" */
+894, /* "CMAC" */
13, /* "CN" */
141, /* "CRLReason" */
417, /* "CSPName" */
407, /* "characteristic-two-field" */
395, /* "clearance" */
633, /* "cleartext track 2" */
+894, /* "cmac" */
13, /* "commonName" */
513, /* "content types" */
50, /* "contentType" */
#define LN_hmac "hmac"
#define NID_hmac 855
+#define SN_cmac "CMAC"
+#define LN_cmac "cmac"
+#define NID_cmac 894
+
deltaRevocationList 891
dmdName 892
id_alg_PWRI_KEK 893
+cmac 894
# There is no OID that just denotes "HMAC" oddly enough...
: HMAC : hmac
+# Nor CMAC either
+ : CMAC : cmac
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