mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-11-29 16:28:24 -05:00
481 lines
11 KiB
C
Executable File
481 lines
11 KiB
C
Executable File
/* $OpenBSD: dsa_asn1.c,v 1.22 2018/06/14 17:03:19 jsing Exp $ */
|
|
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
|
|
* project 2000.
|
|
*/
|
|
/* ====================================================================
|
|
* Copyright (c) 2000-2005 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 <string.h>
|
|
|
|
#include <openssl/asn1.h>
|
|
#include <openssl/asn1t.h>
|
|
#include <openssl/dsa.h>
|
|
#include <openssl/err.h>
|
|
|
|
/* Override the default new methods */
|
|
static int
|
|
sig_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
|
|
{
|
|
if (operation == ASN1_OP_NEW_PRE) {
|
|
DSA_SIG *sig;
|
|
|
|
if ((sig = DSA_SIG_new()) == NULL) {
|
|
DSAerror(ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
*pval = (ASN1_VALUE *)sig;
|
|
return 2;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const ASN1_AUX DSA_SIG_aux = {
|
|
.app_data = NULL,
|
|
.flags = 0,
|
|
.ref_offset = 0,
|
|
.ref_lock = 0,
|
|
.asn1_cb = sig_cb,
|
|
.enc_offset = 0,
|
|
};
|
|
static const ASN1_TEMPLATE DSA_SIG_seq_tt[] = {
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA_SIG, r),
|
|
.field_name = "r",
|
|
.item = &CBIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA_SIG, s),
|
|
.field_name = "s",
|
|
.item = &CBIGNUM_it,
|
|
},
|
|
};
|
|
|
|
const ASN1_ITEM DSA_SIG_it = {
|
|
.itype = ASN1_ITYPE_SEQUENCE,
|
|
.utype = V_ASN1_SEQUENCE,
|
|
.templates = DSA_SIG_seq_tt,
|
|
.tcount = sizeof(DSA_SIG_seq_tt) / sizeof(ASN1_TEMPLATE),
|
|
.funcs = &DSA_SIG_aux,
|
|
.size = sizeof(DSA_SIG),
|
|
.sname = "DSA_SIG",
|
|
};
|
|
|
|
|
|
DSA_SIG *
|
|
d2i_DSA_SIG(DSA_SIG **a, const unsigned char **in, long len)
|
|
{
|
|
return (DSA_SIG *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
|
|
&DSA_SIG_it);
|
|
}
|
|
|
|
int
|
|
i2d_DSA_SIG(const DSA_SIG *a, unsigned char **out)
|
|
{
|
|
return ASN1_item_i2d((ASN1_VALUE *)a, out, &DSA_SIG_it);
|
|
}
|
|
|
|
void
|
|
DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps)
|
|
{
|
|
if (pr != NULL)
|
|
*pr = sig->r;
|
|
if (ps != NULL)
|
|
*ps = sig->s;
|
|
}
|
|
|
|
int
|
|
DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s)
|
|
{
|
|
if (r == NULL || s == NULL)
|
|
return 0;
|
|
|
|
BN_clear_free(sig->r);
|
|
sig->r = r;
|
|
BN_clear_free(sig->s);
|
|
sig->s = s;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Override the default free and new methods */
|
|
static int
|
|
dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, void *exarg)
|
|
{
|
|
if (operation == ASN1_OP_NEW_PRE) {
|
|
*pval = (ASN1_VALUE *)DSA_new();
|
|
if (*pval)
|
|
return 2;
|
|
return 0;
|
|
} else if (operation == ASN1_OP_FREE_PRE) {
|
|
DSA_free((DSA *)*pval);
|
|
*pval = NULL;
|
|
return 2;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const ASN1_AUX DSAPrivateKey_aux = {
|
|
.app_data = NULL,
|
|
.flags = 0,
|
|
.ref_offset = 0,
|
|
.ref_lock = 0,
|
|
.asn1_cb = dsa_cb,
|
|
.enc_offset = 0,
|
|
};
|
|
static const ASN1_TEMPLATE DSAPrivateKey_seq_tt[] = {
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, version),
|
|
.field_name = "version",
|
|
.item = &LONG_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, p),
|
|
.field_name = "p",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, q),
|
|
.field_name = "q",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, g),
|
|
.field_name = "g",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, pub_key),
|
|
.field_name = "pub_key",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, priv_key),
|
|
.field_name = "priv_key",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
};
|
|
|
|
const ASN1_ITEM DSAPrivateKey_it = {
|
|
.itype = ASN1_ITYPE_SEQUENCE,
|
|
.utype = V_ASN1_SEQUENCE,
|
|
.templates = DSAPrivateKey_seq_tt,
|
|
.tcount = sizeof(DSAPrivateKey_seq_tt) / sizeof(ASN1_TEMPLATE),
|
|
.funcs = &DSAPrivateKey_aux,
|
|
.size = sizeof(DSA),
|
|
.sname = "DSA",
|
|
};
|
|
|
|
|
|
DSA *
|
|
d2i_DSAPrivateKey(DSA **a, const unsigned char **in, long len)
|
|
{
|
|
return (DSA *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
|
|
&DSAPrivateKey_it);
|
|
}
|
|
|
|
int
|
|
i2d_DSAPrivateKey(const DSA *a, unsigned char **out)
|
|
{
|
|
return ASN1_item_i2d((ASN1_VALUE *)a, out, &DSAPrivateKey_it);
|
|
}
|
|
|
|
static const ASN1_AUX DSAparams_aux = {
|
|
.app_data = NULL,
|
|
.flags = 0,
|
|
.ref_offset = 0,
|
|
.ref_lock = 0,
|
|
.asn1_cb = dsa_cb,
|
|
.enc_offset = 0,
|
|
};
|
|
static const ASN1_TEMPLATE DSAparams_seq_tt[] = {
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, p),
|
|
.field_name = "p",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, q),
|
|
.field_name = "q",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, g),
|
|
.field_name = "g",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
};
|
|
|
|
const ASN1_ITEM DSAparams_it = {
|
|
.itype = ASN1_ITYPE_SEQUENCE,
|
|
.utype = V_ASN1_SEQUENCE,
|
|
.templates = DSAparams_seq_tt,
|
|
.tcount = sizeof(DSAparams_seq_tt) / sizeof(ASN1_TEMPLATE),
|
|
.funcs = &DSAparams_aux,
|
|
.size = sizeof(DSA),
|
|
.sname = "DSA",
|
|
};
|
|
|
|
|
|
DSA *
|
|
d2i_DSAparams(DSA **a, const unsigned char **in, long len)
|
|
{
|
|
return (DSA *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
|
|
&DSAparams_it);
|
|
}
|
|
|
|
int
|
|
i2d_DSAparams(const DSA *a, unsigned char **out)
|
|
{
|
|
return ASN1_item_i2d((ASN1_VALUE *)a, out, &DSAparams_it);
|
|
}
|
|
|
|
DSA *
|
|
d2i_DSAparams_bio(BIO *bp, DSA **a)
|
|
{
|
|
return ASN1_item_d2i_bio(&DSAparams_it, bp, a);
|
|
}
|
|
|
|
int
|
|
i2d_DSAparams_bio(BIO *bp, DSA *a)
|
|
{
|
|
return ASN1_item_i2d_bio(&DSAparams_it, bp, a);
|
|
}
|
|
|
|
DSA *
|
|
d2i_DSAparams_fp(FILE *fp, DSA **a)
|
|
{
|
|
return ASN1_item_d2i_fp(&DSAparams_it, fp, a);
|
|
}
|
|
|
|
int
|
|
i2d_DSAparams_fp(FILE *fp, DSA *a)
|
|
{
|
|
return ASN1_item_i2d_fp(&DSAparams_it, fp, a);
|
|
}
|
|
|
|
/*
|
|
* DSA public key is a bit trickier... its effectively a CHOICE type
|
|
* decided by a field called write_params which can either write out
|
|
* just the public key as an INTEGER or the parameters and public key
|
|
* in a SEQUENCE
|
|
*/
|
|
|
|
static const ASN1_TEMPLATE dsa_pub_internal_seq_tt[] = {
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, pub_key),
|
|
.field_name = "pub_key",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, p),
|
|
.field_name = "p",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, q),
|
|
.field_name = "q",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, g),
|
|
.field_name = "g",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
};
|
|
|
|
const ASN1_ITEM dsa_pub_internal_it = {
|
|
.itype = ASN1_ITYPE_SEQUENCE,
|
|
.utype = V_ASN1_SEQUENCE,
|
|
.templates = dsa_pub_internal_seq_tt,
|
|
.tcount = sizeof(dsa_pub_internal_seq_tt) / sizeof(ASN1_TEMPLATE),
|
|
.funcs = NULL,
|
|
.size = sizeof(DSA),
|
|
.sname = "DSA",
|
|
};
|
|
|
|
static const ASN1_AUX DSAPublicKey_aux = {
|
|
.app_data = NULL,
|
|
.flags = 0,
|
|
.ref_offset = 0,
|
|
.ref_lock = 0,
|
|
.asn1_cb = dsa_cb,
|
|
.enc_offset = 0,
|
|
};
|
|
static const ASN1_TEMPLATE DSAPublicKey_ch_tt[] = {
|
|
{
|
|
.flags = 0,
|
|
.tag = 0,
|
|
.offset = offsetof(DSA, pub_key),
|
|
.field_name = "pub_key",
|
|
.item = &BIGNUM_it,
|
|
},
|
|
{
|
|
.flags = 0 | ASN1_TFLG_COMBINE,
|
|
.tag = 0,
|
|
.offset = 0,
|
|
.field_name = NULL,
|
|
.item = &dsa_pub_internal_it,
|
|
},
|
|
};
|
|
|
|
const ASN1_ITEM DSAPublicKey_it = {
|
|
.itype = ASN1_ITYPE_CHOICE,
|
|
.utype = offsetof(DSA, write_params),
|
|
.templates = DSAPublicKey_ch_tt,
|
|
.tcount = sizeof(DSAPublicKey_ch_tt) / sizeof(ASN1_TEMPLATE),
|
|
.funcs = &DSAPublicKey_aux,
|
|
.size = sizeof(DSA),
|
|
.sname = "DSA",
|
|
};
|
|
|
|
|
|
DSA *
|
|
d2i_DSAPublicKey(DSA **a, const unsigned char **in, long len)
|
|
{
|
|
return (DSA *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
|
|
&DSAPublicKey_it);
|
|
}
|
|
|
|
int
|
|
i2d_DSAPublicKey(const DSA *a, unsigned char **out)
|
|
{
|
|
return ASN1_item_i2d((ASN1_VALUE *)a, out, &DSAPublicKey_it);
|
|
}
|
|
|
|
DSA *
|
|
DSAparams_dup(DSA *dsa)
|
|
{
|
|
return ASN1_item_dup(&DSAparams_it, dsa);
|
|
}
|
|
|
|
int
|
|
DSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char *sig,
|
|
unsigned int *siglen, DSA *dsa)
|
|
{
|
|
DSA_SIG *s;
|
|
|
|
s = DSA_do_sign(dgst, dlen, dsa);
|
|
if (s == NULL) {
|
|
*siglen = 0;
|
|
return 0;
|
|
}
|
|
*siglen = i2d_DSA_SIG(s,&sig);
|
|
DSA_SIG_free(s);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* data has already been hashed (probably with SHA or SHA-1).
|
|
* returns
|
|
* 1: correct signature
|
|
* 0: incorrect signature
|
|
* -1: error
|
|
*/
|
|
int
|
|
DSA_verify(int type, const unsigned char *dgst, int dgst_len,
|
|
const unsigned char *sigbuf, int siglen, DSA *dsa)
|
|
{
|
|
DSA_SIG *s;
|
|
unsigned char *der = NULL;
|
|
const unsigned char *p = sigbuf;
|
|
int derlen = -1;
|
|
int ret = -1;
|
|
|
|
s = DSA_SIG_new();
|
|
if (s == NULL)
|
|
return ret;
|
|
if (d2i_DSA_SIG(&s, &p, siglen) == NULL)
|
|
goto err;
|
|
/* Ensure signature uses DER and doesn't have trailing garbage */
|
|
derlen = i2d_DSA_SIG(s, &der);
|
|
if (derlen != siglen || memcmp(sigbuf, der, derlen))
|
|
goto err;
|
|
ret = DSA_do_verify(dgst, dgst_len, s, dsa);
|
|
err:
|
|
freezero(der, derlen);
|
|
DSA_SIG_free(s);
|
|
return ret;
|
|
}
|