[efi-boot-shim.git] / Cryptlib / OpenSSL / crypto / hmac / hm_pmeth.c

/*
 * 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/x509.h>
#include <openssl/x509v3.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include "evp_locl.h"

/* HMAC pkey context structure */

typedef struct {
    const EVP_MD *md;           /* MD for HMAC use */
    ASN1_OCTET_STRING ktmp;     /* Temp storage for key */
    HMAC_CTX ctx;
} HMAC_PKEY_CTX;

static int pkey_hmac_init(EVP_PKEY_CTX *ctx)
{
    HMAC_PKEY_CTX *hctx;
    hctx = OPENSSL_malloc(sizeof(HMAC_PKEY_CTX));
    if (!hctx)
        return 0;
    hctx->md = NULL;
    hctx->ktmp.data = NULL;
    hctx->ktmp.length = 0;
    hctx->ktmp.flags = 0;
    hctx->ktmp.type = V_ASN1_OCTET_STRING;
    HMAC_CTX_init(&hctx->ctx);

    ctx->data = hctx;
    ctx->keygen_info_count = 0;

    return 1;
}

static int pkey_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
{
    HMAC_PKEY_CTX *sctx, *dctx;
    if (!pkey_hmac_init(dst))
        return 0;
    sctx = src->data;
    dctx = dst->data;
    dctx->md = sctx->md;
    HMAC_CTX_init(&dctx->ctx);
    if (!HMAC_CTX_copy(&dctx->ctx, &sctx->ctx))
        return 0;
    if (sctx->ktmp.data) {
        if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
                                   sctx->ktmp.data, sctx->ktmp.length))
            return 0;
    }
    return 1;
}

static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
{
    HMAC_PKEY_CTX *hctx = ctx->data;
    HMAC_CTX_cleanup(&hctx->ctx);
    if (hctx->ktmp.data) {
        if (hctx->ktmp.length)
            OPENSSL_cleanse(hctx->ktmp.data, hctx->ktmp.length);
        OPENSSL_free(hctx->ktmp.data);
        hctx->ktmp.data = NULL;
    }
    OPENSSL_free(hctx);
}

static int pkey_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
{
    ASN1_OCTET_STRING *hkey = NULL;
    HMAC_PKEY_CTX *hctx = ctx->data;
    if (!hctx->ktmp.data)
        return 0;
    hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
    if (!hkey)
        return 0;
    EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);

    return 1;
}

static int int_update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
    HMAC_PKEY_CTX *hctx = ctx->pctx->data;
    if (!HMAC_Update(&hctx->ctx, data, count))
        return 0;
    return 1;
}

static int hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx)
{
    HMAC_PKEY_CTX *hctx = ctx->data;
    HMAC_CTX_set_flags(&hctx->ctx, mctx->flags & ~EVP_MD_CTX_FLAG_NO_INIT);
    EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
    mctx->update = int_update;
    return 1;
}

static int hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
                        EVP_MD_CTX *mctx)
{
    unsigned int hlen;
    HMAC_PKEY_CTX *hctx = ctx->data;
    int l = EVP_MD_CTX_size(mctx);

    if (l < 0)
        return 0;
    *siglen = l;
    if (!sig)
        return 1;

    if (!HMAC_Final(&hctx->ctx, sig, &hlen))
        return 0;
    *siglen = (size_t)hlen;
    return 1;
}

static int pkey_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
{
    HMAC_PKEY_CTX *hctx = ctx->data;
    ASN1_OCTET_STRING *key;
    switch (type) {

    case EVP_PKEY_CTRL_SET_MAC_KEY:
        if ((!p2 && p1 > 0) || (p1 < -1))
            return 0;
        if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
            return 0;
        break;

    case EVP_PKEY_CTRL_MD:
        hctx->md = p2;
        break;

    case EVP_PKEY_CTRL_DIGESTINIT:
        key = (ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
        if (!HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md,
                          ctx->engine))
            return 0;
        break;

    default:
        return -2;

    }
    return 1;
}

static int pkey_hmac_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_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
    }
    if (!strcmp(type, "hexkey")) {
        unsigned char *key;
        int r;
        long keylen;
        key = string_to_hex(value, &keylen);
        if (!key)
            return 0;
        r = pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
        OPENSSL_free(key);
        return r;
    }
    return -2;
}

const EVP_PKEY_METHOD hmac_pkey_meth = {
    EVP_PKEY_HMAC,
    0,
    pkey_hmac_init,
    pkey_hmac_copy,
    pkey_hmac_cleanup,

    0, 0,

    0,
    pkey_hmac_keygen,

    0, 0,

    0, 0,

    0, 0,

    hmac_signctx_init,
    hmac_signctx,

    0, 0,

    0, 0,

    0, 0,

    0, 0,

    pkey_hmac_ctrl,
    pkey_hmac_ctrl_str
};
Commit	Line	Data
d3819813	1	/*
031e5cce SM	2	* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
	3	* 2007.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 2007 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
d3819813 MTL	56	*
	57	*/
	58
	59	#include <stdio.h>
031e5cce	60	#include "cryptlib.h"
d3819813 MTL	61	#include <openssl/x509.h>
	62	#include <openssl/x509v3.h>
	63	#include <openssl/evp.h>
	64	#include <openssl/hmac.h>
031e5cce	65	#include "evp_locl.h"
d3819813 MTL	66
	67	/* HMAC pkey context structure */
	68
	69	typedef struct {
	70	const EVP_MD md; / MD for HMAC use */
	71	ASN1_OCTET_STRING ktmp; /* Temp storage for key */
031e5cce	72	HMAC_CTX ctx;
d3819813 MTL	73	} HMAC_PKEY_CTX;
	74
	75	static int pkey_hmac_init(EVP_PKEY_CTX *ctx)
	76	{
	77	HMAC_PKEY_CTX *hctx;
031e5cce SM	78	hctx = OPENSSL_malloc(sizeof(HMAC_PKEY_CTX));
031e5cce SM	79	if (!hctx)
d3819813	80	return 0;
031e5cce SM	81	hctx->md = NULL;
	82	hctx->ktmp.data = NULL;
	83	hctx->ktmp.length = 0;
	84	hctx->ktmp.flags = 0;
d3819813	85	hctx->ktmp.type = V_ASN1_OCTET_STRING;
031e5cce	86	HMAC_CTX_init(&hctx->ctx);
d3819813 MTL	87
	88	ctx->data = hctx;
	89	ctx->keygen_info_count = 0;
	90
	91	return 1;
	92	}
	93
	94	static int pkey_hmac_copy(EVP_PKEY_CTX dst, EVP_PKEY_CTX src)
	95	{
	96	HMAC_PKEY_CTX sctx, dctx;
	97	if (!pkey_hmac_init(dst))
	98	return 0;
031e5cce SM	99	sctx = src->data;
031e5cce SM	100	dctx = dst->data;
d3819813	101	dctx->md = sctx->md;
031e5cce SM	102	HMAC_CTX_init(&dctx->ctx);
	103	if (!HMAC_CTX_copy(&dctx->ctx, &sctx->ctx))
	104	return 0;
d3819813 MTL	105	if (sctx->ktmp.data) {
	106	if (!ASN1_OCTET_STRING_set(&dctx->ktmp,
	107	sctx->ktmp.data, sctx->ktmp.length))
031e5cce	108	return 0;
d3819813 MTL	109	}
	110	return 1;
	111	}
	112
	113	static void pkey_hmac_cleanup(EVP_PKEY_CTX *ctx)
	114	{
031e5cce SM	115	HMAC_PKEY_CTX *hctx = ctx->data;
	116	HMAC_CTX_cleanup(&hctx->ctx);
	117	if (hctx->ktmp.data) {
	118	if (hctx->ktmp.length)
	119	OPENSSL_cleanse(hctx->ktmp.data, hctx->ktmp.length);
	120	OPENSSL_free(hctx->ktmp.data);
	121	hctx->ktmp.data = NULL;
d3819813	122	}
031e5cce	123	OPENSSL_free(hctx);
d3819813 MTL	124	}
	125
	126	static int pkey_hmac_keygen(EVP_PKEY_CTX ctx, EVP_PKEY pkey)
	127	{
	128	ASN1_OCTET_STRING *hkey = NULL;
	129	HMAC_PKEY_CTX *hctx = ctx->data;
	130	if (!hctx->ktmp.data)
	131	return 0;
	132	hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp);
	133	if (!hkey)
	134	return 0;
	135	EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey);
	136
	137	return 1;
	138	}
	139
	140	static int int_update(EVP_MD_CTX ctx, const void data, size_t count)
	141	{
031e5cce SM	142	HMAC_PKEY_CTX *hctx = ctx->pctx->data;
031e5cce SM	143	if (!HMAC_Update(&hctx->ctx, data, count))
d3819813 MTL	144	return 0;
	145	return 1;
	146	}
	147
	148	static int hmac_signctx_init(EVP_PKEY_CTX ctx, EVP_MD_CTX mctx)
	149	{
	150	HMAC_PKEY_CTX *hctx = ctx->data;
031e5cce	151	HMAC_CTX_set_flags(&hctx->ctx, mctx->flags & ~EVP_MD_CTX_FLAG_NO_INIT);
d3819813	152	EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT);
031e5cce	153	mctx->update = int_update;
d3819813 MTL	154	return 1;
	155	}
	156
	157	static int hmac_signctx(EVP_PKEY_CTX ctx, unsigned char sig, size_t *siglen,
	158	EVP_MD_CTX *mctx)
	159	{
	160	unsigned int hlen;
	161	HMAC_PKEY_CTX *hctx = ctx->data;
	162	int l = EVP_MD_CTX_size(mctx);
	163
	164	if (l < 0)
	165	return 0;
	166	*siglen = l;
	167	if (!sig)
	168	return 1;
	169
031e5cce	170	if (!HMAC_Final(&hctx->ctx, sig, &hlen))
d3819813 MTL	171	return 0;
	172	*siglen = (size_t)hlen;
	173	return 1;
	174	}
	175
	176	static int pkey_hmac_ctrl(EVP_PKEY_CTX ctx, int type, int p1, void p2)
	177	{
	178	HMAC_PKEY_CTX *hctx = ctx->data;
	179	ASN1_OCTET_STRING *key;
	180	switch (type) {
	181
	182	case EVP_PKEY_CTRL_SET_MAC_KEY:
	183	if ((!p2 && p1 > 0) \|\| (p1 < -1))
	184	return 0;
	185	if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1))
	186	return 0;
	187	break;
	188
	189	case EVP_PKEY_CTRL_MD:
	190	hctx->md = p2;
	191	break;
	192
	193	case EVP_PKEY_CTRL_DIGESTINIT:
	194	key = (ASN1_OCTET_STRING *)ctx->pkey->pkey.ptr;
031e5cce	195	if (!HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md,
d3819813 MTL	196	ctx->engine))
	197	return 0;
	198	break;
	199
	200	default:
	201	return -2;
	202
	203	}
	204	return 1;
	205	}
	206
	207	static int pkey_hmac_ctrl_str(EVP_PKEY_CTX *ctx,
	208	const char type, const char value)
	209	{
	210	if (!value) {
	211	return 0;
	212	}
031e5cce SM	213	if (!strcmp(type, "key")) {
	214	void p = (void )value;
	215	return pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p);
	216	}
	217	if (!strcmp(type, "hexkey")) {
	218	unsigned char *key;
	219	int r;
	220	long keylen;
	221	key = string_to_hex(value, &keylen);
	222	if (!key)
	223	return 0;
	224	r = pkey_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key);
	225	OPENSSL_free(key);
	226	return r;
	227	}
d3819813 MTL	228	return -2;
	229	}
	230
	231	const EVP_PKEY_METHOD hmac_pkey_meth = {
	232	EVP_PKEY_HMAC,
	233	0,
	234	pkey_hmac_init,
	235	pkey_hmac_copy,
	236	pkey_hmac_cleanup,
	237
	238	0, 0,
	239
	240	0,
	241	pkey_hmac_keygen,
	242
	243	0, 0,
	244
	245	0, 0,
	246
	247	0, 0,
	248
	249	hmac_signctx_init,
	250	hmac_signctx,
	251
	252	0, 0,
	253
	254	0, 0,
	255
	256	0, 0,
	257
	258	0, 0,
	259
	260	pkey_hmac_ctrl,
	261	pkey_hmac_ctrl_str
	262	};