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e172d60ddb
openssl/crypto/asn1/t_pkey.c
Bodo Möller e172d60ddb Add ECDH support. 
Additional changes:
 - use EC_GROUP_get_degree() in apps/req.c
 - add ECDSA and ECDH to apps/speed.c
 - adds support for EC curves over binary fields to ECDSA
 - new function EC_KEY_up_ref() in crypto/ec/ec_key.c
 - reorganize crypto/ecdsa/ecdsatest.c
 - add engine support for ECDH
 - fix a few bugs in ECDSA engine support

Submitted by: Douglas Stebila <douglas.stebila@sun.com>
2002-08-09 08:43:04 +00:00

760 lines
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/* crypto/asn1/t_pkey.c */
/* 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.]
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* Binary polynomial ECC support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include <openssl/bn.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_EC
#include <openssl/ec.h>
#endif
static int print(BIO *fp,const char *str,BIGNUM *num,
unsigned char *buf,int off);
#ifndef OPENSSL_NO_RSA
#ifndef OPENSSL_NO_FP_API
int RSA_print_fp(FILE *fp, const RSA *x, int off)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
RSAerr(RSA_F_RSA_PRINT_FP,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=RSA_print(b,x,off);
BIO_free(b);
return(ret);
}
#endif
int RSA_print(BIO *bp, const RSA *x, int off)
{
char str[128];
const char *s;
unsigned char *m=NULL;
int ret=0;
size_t buf_len=0, i;
if (x->n)
buf_len = (size_t)BN_num_bytes(x->n);
if (x->e)
if (buf_len < (i = (size_t)BN_num_bytes(x->e)))
buf_len = i;
if (x->d)
if (buf_len < (i = (size_t)BN_num_bytes(x->d)))
buf_len = i;
if (x->p)
if (buf_len < (i = (size_t)BN_num_bytes(x->p)))
buf_len = i;
if (x->q)
if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
buf_len = i;
if (x->dmp1)
if (buf_len < (i = (size_t)BN_num_bytes(x->dmp1)))
buf_len = i;
if (x->dmq1)
if (buf_len < (i = (size_t)BN_num_bytes(x->dmq1)))
buf_len = i;
if (x->iqmp)
if (buf_len < (i = (size_t)BN_num_bytes(x->iqmp)))
buf_len = i;
m=(unsigned char *)OPENSSL_malloc(buf_len+10);
if (m == NULL)
{
RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
goto err;
}
if (off)
{
if (off > 128) off=128;
memset(str,' ',off);
}
if (x->d != NULL)
{
if (off && (BIO_write(bp,str,off) <= 0)) goto err;
if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->n))
<= 0) goto err;
}
if (x->d == NULL)
sprintf(str,"Modulus (%d bit):",BN_num_bits(x->n));
else
strcpy(str,"modulus:");
if (!print(bp,str,x->n,m,off)) goto err;
s=(x->d == NULL)?"Exponent:":"publicExponent:";
if (!print(bp,s,x->e,m,off)) goto err;
if (!print(bp,"privateExponent:",x->d,m,off)) goto err;
if (!print(bp,"prime1:",x->p,m,off)) goto err;
if (!print(bp,"prime2:",x->q,m,off)) goto err;
if (!print(bp,"exponent1:",x->dmp1,m,off)) goto err;
if (!print(bp,"exponent2:",x->dmq1,m,off)) goto err;
if (!print(bp,"coefficient:",x->iqmp,m,off)) goto err;
ret=1;
err:
if (m != NULL) OPENSSL_free(m);
return(ret);
}
#endif /* OPENSSL_NO_RSA */
#ifndef OPENSSL_NO_DSA
#ifndef OPENSSL_NO_FP_API
int DSA_print_fp(FILE *fp, const DSA *x, int off)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
DSAerr(DSA_F_DSA_PRINT_FP,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=DSA_print(b,x,off);
BIO_free(b);
return(ret);
}
#endif
int DSA_print(BIO *bp, const DSA *x, int off)
{
char str[128];
unsigned char *m=NULL;
int ret=0;
size_t buf_len=0,i;
if (x->p)
buf_len = (size_t)BN_num_bytes(x->p);
if (x->q)
if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
buf_len = i;
if (x->g)
if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
buf_len = i;
if (x->priv_key)
if (buf_len < (i = (size_t)BN_num_bytes(x->priv_key)))
buf_len = i;
if (x->pub_key)
if (buf_len < (i = (size_t)BN_num_bytes(x->pub_key)))
buf_len = i;
m=(unsigned char *)OPENSSL_malloc(buf_len+10);
if (m == NULL)
{
DSAerr(DSA_F_DSA_PRINT,ERR_R_MALLOC_FAILURE);
goto err;
}
if (off)
{
if (off > 128) off=128;
memset(str,' ',off);
}
if (x->priv_key != NULL)
{
if (off && (BIO_write(bp,str,off) <= 0)) goto err;
if (BIO_printf(bp,"Private-Key: (%d bit)\n",BN_num_bits(x->p))
<= 0) goto err;
}
if ((x->priv_key != NULL) && !print(bp,"priv:",x->priv_key,m,off))
goto err;
if ((x->pub_key != NULL) && !print(bp,"pub: ",x->pub_key,m,off))
goto err;
if ((x->p != NULL) && !print(bp,"P: ",x->p,m,off)) goto err;
if ((x->q != NULL) && !print(bp,"Q: ",x->q,m,off)) goto err;
if ((x->g != NULL) && !print(bp,"G: ",x->g,m,off)) goto err;
ret=1;
err:
if (m != NULL) OPENSSL_free(m);
return(ret);
}
#endif /* !OPENSSL_NO_DSA */
#ifndef OPENSSL_NO_EC
#ifndef OPENSSL_NO_FP_API
int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
ECerr(EC_F_ECPKPARAMETERS_PRINT_FP,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b, fp, BIO_NOCLOSE);
ret = ECPKParameters_print(b, x, off);
BIO_free(b);
return(ret);
}
int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
ECerr(EC_F_EC_KEY_PRINT_FP, ERR_R_BIO_LIB);
return(0);
}
BIO_set_fp(b, fp, BIO_NOCLOSE);
ret = EC_KEY_print(b, x, off);
BIO_free(b);
return(ret);
}
#endif
int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
{
char str[128];
unsigned char *buffer=NULL;
size_t buf_len=0, i;
int ret=0, reason=ERR_R_BIO_LIB;
BN_CTX *ctx=NULL;
EC_POINT *point=NULL;
BIGNUM *p=NULL, *a=NULL, *b=NULL, *gen=NULL,
*order=NULL, *cofactor=NULL, *seed=NULL;
static const char *gen_compressed = "Generator (compressed):";
static const char *gen_uncompressed = "Generator (uncompressed):";
static const char *gen_hybrid = "Generator (hybrid):";
if (!x)
{
reason = ERR_R_PASSED_NULL_PARAMETER;
goto err;
}
if (EC_GROUP_get_asn1_flag(x))
{
/* the curve parameter are given by an asn1 OID */
int nid;
if (off)
{
if (off > 128)
off=128;
memset(str, ' ', off);
if (BIO_write(bp, str, off) <= 0)
goto err;
}
nid = EC_GROUP_get_nid(x);
if (nid == 0)
goto err;
if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
goto err;
if (BIO_printf(bp, "\n") <= 0)
goto err;
}
else
{
/* explicit parameters */
/* TODO */
point_conversion_form_t form;
if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
(b = BN_new()) == NULL || (order = BN_new()) == NULL ||
(cofactor = BN_new()) == NULL)
{
reason = ERR_R_MALLOC_FAILURE;
goto err;
}
if (EC_METHOD_get_field_type(EC_GROUP_method_of(x)) == NID_X9_62_prime_field)
{
if (!EC_GROUP_get_curve_GFp(x, p, a, b, ctx))
{
reason = ERR_R_EC_LIB;
goto err;
}
}
else
{
if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx))
{
reason = ERR_R_EC_LIB;
goto err;
}
}
if ((point = EC_GROUP_get0_generator(x)) == NULL)
{
reason = ERR_R_EC_LIB;
goto err;
}
if (!EC_GROUP_get_order(x, order, NULL) ||
!EC_GROUP_get_cofactor(x, cofactor, NULL))
{
reason = ERR_R_EC_LIB;
goto err;
}
form = EC_GROUP_get_point_conversion_form(x);
if ((gen = EC_POINT_point2bn(x, point,
form, NULL, ctx)) == NULL)
{
reason = ERR_R_EC_LIB;
goto err;
}
buf_len = (size_t)BN_num_bytes(p);
if (buf_len < (i = (size_t)BN_num_bytes(a)))
buf_len = i;
if (buf_len < (i = (size_t)BN_num_bytes(b)))
buf_len = i;
if (buf_len < (i = (size_t)BN_num_bytes(gen)))
buf_len = i;
if (buf_len < (i = (size_t)BN_num_bytes(order)))
buf_len = i;
if (buf_len < (i = (size_t)BN_num_bytes(cofactor)))
buf_len = i;
if (EC_GROUP_get0_seed(x))
{
seed = BN_bin2bn(EC_GROUP_get0_seed(x),
EC_GROUP_get_seed_len(x), NULL);
if (seed == NULL)
{
reason = ERR_R_BN_LIB;
goto err;
}
if (buf_len < (i = (size_t)BN_num_bytes(seed)))
buf_len = i;
}
buf_len += 10;
if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
{
reason = ERR_R_MALLOC_FAILURE;
goto err;
}
if (off)
{
if (off > 128) off=128;
memset(str,' ',off);
}
if ((p != NULL) && !print(bp, "P: ", p, buffer, off))
goto err;
if ((a != NULL) && !print(bp, "A: ", a, buffer, off))
goto err;
if ((b != NULL) && !print(bp, "B: ", b, buffer, off))
goto err;
if (form == POINT_CONVERSION_COMPRESSED)
{
if ((gen != NULL) && !print(bp, gen_compressed, gen,
buffer, off))
goto err;
}
else if (form == POINT_CONVERSION_UNCOMPRESSED)
{
if ((gen != NULL) && !print(bp, gen_uncompressed, gen,
buffer, off))
goto err;
}
else /* form == POINT_CONVERSION_HYBRID */
{
if ((gen != NULL) && !print(bp, gen_hybrid, gen,
buffer, off))
goto err;
}
if ((order != NULL) && !print(bp, "Order: ", order,
buffer, off)) goto err;
if ((cofactor != NULL) && !print(bp, "Cofactor: ", cofactor,
buffer, off)) goto err;
if ((seed != NULL) && !print(bp, "Seed:", seed,
buffer, off)) goto err;
}
ret=1;
err:
if (!ret)
ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
if (p)
BN_free(p);
if (a)
BN_free(a);
if (b)
BN_free(b);
if (gen)
BN_free(gen);
if (order)
BN_free(order);
if (cofactor)
BN_free(cofactor);
if (seed)
BN_free(seed);
if (ctx)
BN_CTX_free(ctx);
if (buffer != NULL)
OPENSSL_free(buffer);
return(ret);
}
int EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
{
char str[128];
unsigned char *buffer=NULL;
size_t buf_len=0, i;
int ret=0, reason=ERR_R_BIO_LIB;
BIGNUM *pub_key=NULL;
BN_CTX *ctx=NULL;
if (!x || !x->group)
{
reason = ERR_R_PASSED_NULL_PARAMETER;
goto err;
}
if ((pub_key = EC_POINT_point2bn(x->group, x->pub_key,
x->conv_form, NULL, ctx)) == NULL)
{
reason = ERR_R_EC_LIB;
goto err;
}
buf_len = (size_t)BN_num_bytes(pub_key);
if (x->priv_key)
{
if ((i = (size_t)BN_num_bytes(x->priv_key)) > buf_len)
buf_len = i;
}
buf_len += 10;
if ((buffer = OPENSSL_malloc(buf_len)) == NULL)
{
reason = ERR_R_MALLOC_FAILURE;
goto err;
}
if (off)
{
if (off > 128) off=128;
memset(str,' ',off);
}
if (x->priv_key != NULL)
{
if (off && (BIO_write(bp, str, off) <= 0)) goto err;
if (BIO_printf(bp, "Private-Key: (%d bit)\n",
BN_num_bits(x->priv_key)) <= 0) goto err;
}
if ((x->priv_key != NULL) && !print(bp, "priv:", x->priv_key,
buffer, off))
goto err;
if ((pub_key != NULL) && !print(bp, "pub: ", pub_key,
buffer, off))
goto err;
if (!ECPKParameters_print(bp, x->group, off))
goto err;
ret=1;
err:
if (!ret)
ECerr(EC_F_EC_KEY_PRINT, reason);
if (pub_key)
BN_free(pub_key);
if (ctx)
BN_CTX_free(ctx);
if (buffer != NULL)
OPENSSL_free(buffer);
return(ret);
}
#endif /* OPENSSL_NO_EC */
static int print(BIO *bp, const char *number, BIGNUM *num, unsigned char *buf,
int off)
{
int n,i;
char str[128];
const char *neg;
if (num == NULL) return(1);
neg=(num->neg)?"-":"";
if (off)
{
if (off > 128) off=128;
memset(str,' ',off);
if (BIO_write(bp,str,off) <= 0) return(0);
}
if (BN_num_bytes(num) <= BN_BYTES)
{
if (BIO_printf(bp,"%s %s%lu (%s0x%lx)\n",number,neg,
(unsigned long)num->d[0],neg,(unsigned long)num->d[0])
<= 0) return(0);
}
else
{
buf[0]=0;
if (BIO_printf(bp,"%s%s",number,
(neg[0] == '-')?" (Negative)":"") <= 0)
return(0);
n=BN_bn2bin(num,&buf[1]);
if (buf[1] & 0x80)
n++;
else buf++;
for (i=0; i<n; i++)
{
if ((i%15) == 0)
{
str[0]='\n';
memset(&(str[1]),' ',off+4);
if (BIO_write(bp,str,off+1+4) <= 0) return(0);
}
if (BIO_printf(bp,"%02x%s",buf[i],((i+1) == n)?"":":")
<= 0) return(0);
}
if (BIO_write(bp,"\n",1) <= 0) return(0);
}
return(1);
}
#ifndef OPENSSL_NO_DH
#ifndef OPENSSL_NO_FP_API
int DHparams_print_fp(FILE *fp, const DH *x)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
DHerr(DH_F_DHPARAMS_PRINT_FP,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=DHparams_print(b, x);
BIO_free(b);
return(ret);
}
#endif
int DHparams_print(BIO *bp, const DH *x)
{
unsigned char *m=NULL;
int reason=ERR_R_BUF_LIB,ret=0;
size_t buf_len=0, i;
if (x->p)
buf_len = (size_t)BN_num_bytes(x->p);
if (x->g)
if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
buf_len = i;
m=(unsigned char *)OPENSSL_malloc(buf_len+10);
if (m == NULL)
{
reason=ERR_R_MALLOC_FAILURE;
goto err;
}
if (BIO_printf(bp,"Diffie-Hellman-Parameters: (%d bit)\n",
BN_num_bits(x->p)) <= 0)
goto err;
if (!print(bp,"prime:",x->p,m,4)) goto err;
if (!print(bp,"generator:",x->g,m,4)) goto err;
if (x->length != 0)
{
if (BIO_printf(bp," recommended-private-length: %d bits\n",
(int)x->length) <= 0) goto err;
}
ret=1;
if (0)
{
err:
DHerr(DH_F_DHPARAMS_PRINT,reason);
}
if (m != NULL) OPENSSL_free(m);
return(ret);
}
#endif
#ifndef OPENSSL_NO_DSA
#ifndef OPENSSL_NO_FP_API
int DSAparams_print_fp(FILE *fp, const DSA *x)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
DSAerr(DSA_F_DSAPARAMS_PRINT_FP,ERR_R_BUF_LIB);
return(0);
}
BIO_set_fp(b,fp,BIO_NOCLOSE);
ret=DSAparams_print(b, x);
BIO_free(b);
return(ret);
}
#endif
int DSAparams_print(BIO *bp, const DSA *x)
{
unsigned char *m=NULL;
int reason=ERR_R_BUF_LIB,ret=0;
size_t buf_len=0,i;
if (x->p)
buf_len = (size_t)BN_num_bytes(x->p);
if (x->q)
if (buf_len < (i = (size_t)BN_num_bytes(x->q)))
buf_len = i;
if (x->g)
if (buf_len < (i = (size_t)BN_num_bytes(x->g)))
buf_len = i;
m=(unsigned char *)OPENSSL_malloc(buf_len+10);
if (m == NULL)
{
reason=ERR_R_MALLOC_FAILURE;
goto err;
}
if (BIO_printf(bp,"DSA-Parameters: (%d bit)\n",
BN_num_bits(x->p)) <= 0)
goto err;
if (!print(bp,"p:",x->p,m,4)) goto err;
if (!print(bp,"q:",x->q,m,4)) goto err;
if (!print(bp,"g:",x->g,m,4)) goto err;
ret=1;
err:
if (m != NULL) OPENSSL_free(m);
DSAerr(DSA_F_DSAPARAMS_PRINT,reason);
return(ret);
}
#endif /* !OPENSSL_NO_DSA */
#ifndef OPENSSL_NO_EC
#ifndef OPENSSL_NO_FP_API
int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
{
BIO *b;
int ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
ECerr(EC_F_ECPARAMETERS_PRINT_FP, ERR_R_BIO_LIB);
return(0);
}
BIO_set_fp(b, fp, BIO_NOCLOSE);
ret = ECParameters_print(b, x);
BIO_free(b);
return(ret);
}
#endif
int ECParameters_print(BIO *bp, const EC_KEY *x)
{
int reason=ERR_R_EC_LIB, ret=0;
BIGNUM *order=NULL;
if (!x || !x->group)
{
reason = ERR_R_PASSED_NULL_PARAMETER;;
goto err;
}
if ((order = BN_new()) == NULL)
{
reason = ERR_R_MALLOC_FAILURE;
goto err;
}
if (!EC_GROUP_get_order(x->group, order, NULL))
{
reason = ERR_R_EC_LIB;
goto err;
}
if (BIO_printf(bp, "ECDSA-Parameters: (%d bit)\n",
BN_num_bits(order)) <= 0)
goto err;
if (!ECPKParameters_print(bp, x->group, 4))
goto err;
ret=1;
err:
if (order)
BN_free(order);
ECerr(EC_F_ECPARAMETERS_PRINT, reason);
return(ret);
}
#endif
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