mirror of
https://github.com/openssl/openssl.git
synced 2024-12-03 05:41:46 +08:00
dca5eeb4d0
Re-implemented as suggested by Steve Henson. Also change ECParameters_print the same way. Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
274 lines
7.8 KiB
C
274 lines
7.8 KiB
C
/*
|
|
* Copyright 2006-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/* ====================================================================
|
|
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
|
|
* Portions originally developed by SUN MICROSYSTEMS, INC., and
|
|
* contributed to the OpenSSL project.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/evp.h>
|
|
#include <openssl/ec.h>
|
|
#include <openssl/bn.h>
|
|
|
|
#ifndef OPENSSL_NO_STDIO
|
|
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);
|
|
}
|
|
|
|
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
|
|
|
|
static int print_bin(BIO *fp, const char *str, const unsigned char *num,
|
|
size_t len, int off);
|
|
|
|
int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
|
|
{
|
|
int ret = 0, reason = ERR_R_BIO_LIB;
|
|
BN_CTX *ctx = NULL;
|
|
const EC_POINT *point = NULL;
|
|
BIGNUM *p = NULL, *a = NULL, *b = NULL, *gen = NULL;
|
|
const BIGNUM *order = NULL, *cofactor = NULL;
|
|
const unsigned char *seed;
|
|
size_t seed_len = 0;
|
|
|
|
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;
|
|
}
|
|
|
|
ctx = BN_CTX_new();
|
|
if (ctx == NULL) {
|
|
reason = ERR_R_MALLOC_FAILURE;
|
|
goto err;
|
|
}
|
|
|
|
if (EC_GROUP_get_asn1_flag(x)) {
|
|
/* the curve parameter are given by an asn1 OID */
|
|
int nid;
|
|
const char *nname;
|
|
|
|
if (!BIO_indent(bp, off, 128))
|
|
goto err;
|
|
|
|
nid = EC_GROUP_get_curve_name(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;
|
|
nname = EC_curve_nid2nist(nid);
|
|
if (nname) {
|
|
if (!BIO_indent(bp, off, 128))
|
|
goto err;
|
|
if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
|
|
goto err;
|
|
}
|
|
} else {
|
|
/* explicit parameters */
|
|
int is_char_two = 0;
|
|
point_conversion_form_t form;
|
|
int tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(x));
|
|
|
|
if (tmp_nid == NID_X9_62_characteristic_two_field)
|
|
is_char_two = 1;
|
|
|
|
if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
|
|
(b = BN_new()) == NULL) {
|
|
reason = ERR_R_MALLOC_FAILURE;
|
|
goto err;
|
|
}
|
|
#ifndef OPENSSL_NO_EC2M
|
|
if (is_char_two) {
|
|
if (!EC_GROUP_get_curve_GF2m(x, p, a, b, ctx)) {
|
|
reason = ERR_R_EC_LIB;
|
|
goto err;
|
|
}
|
|
} else /* prime field */
|
|
#endif
|
|
{
|
|
if (!EC_GROUP_get_curve_GFp(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;
|
|
}
|
|
order = EC_GROUP_get0_order(x);
|
|
cofactor = EC_GROUP_get0_cofactor(x);
|
|
if (order == 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;
|
|
}
|
|
|
|
if ((seed = EC_GROUP_get0_seed(x)) != NULL)
|
|
seed_len = EC_GROUP_get_seed_len(x);
|
|
|
|
if (!BIO_indent(bp, off, 128))
|
|
goto err;
|
|
|
|
/* print the 'short name' of the field type */
|
|
if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
|
|
<= 0)
|
|
goto err;
|
|
|
|
if (is_char_two) {
|
|
/* print the 'short name' of the base type OID */
|
|
int basis_type = EC_GROUP_get_basis_type(x);
|
|
if (basis_type == 0)
|
|
goto err;
|
|
|
|
if (!BIO_indent(bp, off, 128))
|
|
goto err;
|
|
|
|
if (BIO_printf(bp, "Basis Type: %s\n",
|
|
OBJ_nid2sn(basis_type)) <= 0)
|
|
goto err;
|
|
|
|
/* print the polynomial */
|
|
if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
|
|
off))
|
|
goto err;
|
|
} else {
|
|
if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
|
|
goto err;
|
|
}
|
|
if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, NULL, off))
|
|
goto err;
|
|
if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, NULL, off))
|
|
goto err;
|
|
if (form == POINT_CONVERSION_COMPRESSED) {
|
|
if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen,
|
|
NULL, off))
|
|
goto err;
|
|
} else if (form == POINT_CONVERSION_UNCOMPRESSED) {
|
|
if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen,
|
|
NULL, off))
|
|
goto err;
|
|
} else { /* form == POINT_CONVERSION_HYBRID */
|
|
|
|
if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen,
|
|
NULL, off))
|
|
goto err;
|
|
}
|
|
if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order,
|
|
NULL, off))
|
|
goto err;
|
|
if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
|
|
NULL, off))
|
|
goto err;
|
|
if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
|
|
goto err;
|
|
}
|
|
ret = 1;
|
|
err:
|
|
if (!ret)
|
|
ECerr(EC_F_ECPKPARAMETERS_PRINT, reason);
|
|
BN_free(p);
|
|
BN_free(a);
|
|
BN_free(b);
|
|
BN_free(gen);
|
|
BN_CTX_free(ctx);
|
|
return (ret);
|
|
}
|
|
|
|
static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
|
|
size_t len, int off)
|
|
{
|
|
size_t i;
|
|
char str[128];
|
|
|
|
if (buf == NULL)
|
|
return 1;
|
|
if (off > 0) {
|
|
if (off > 128)
|
|
off = 128;
|
|
memset(str, ' ', off);
|
|
if (BIO_write(fp, str, off) <= 0)
|
|
return 0;
|
|
} else {
|
|
off = 0;
|
|
}
|
|
|
|
if (BIO_printf(fp, "%s", name) <= 0)
|
|
return 0;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
if ((i % 15) == 0) {
|
|
str[0] = '\n';
|
|
memset(&(str[1]), ' ', off + 4);
|
|
if (BIO_write(fp, str, off + 1 + 4) <= 0)
|
|
return 0;
|
|
}
|
|
if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
|
|
0)
|
|
return 0;
|
|
}
|
|
if (BIO_write(fp, "\n", 1) <= 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|