Coverage Report

Created: 2024-11-21 07:03

/src/openssl/crypto/ec/eck_prn.c
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Count
Source (jump to first uncovered line)
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/*
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 * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved.
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 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
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 *
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 * Licensed under the Apache License 2.0 (the "License").  You may not use
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 * this file except in compliance with the License.  You can obtain a copy
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 * in the file LICENSE in the source distribution or at
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 * https://www.openssl.org/source/license.html
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 */
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/ec.h>
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#include <openssl/bn.h>
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#ifndef OPENSSL_NO_DEPRECATED_3_0
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# ifndef OPENSSL_NO_STDIO
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int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
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0
{
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0
    BIO *b;
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0
    int ret;
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0
    if ((b = BIO_new(BIO_s_file())) == NULL) {
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0
        ERR_raise(ERR_LIB_EC, ERR_R_BUF_LIB);
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0
        return 0;
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0
    }
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0
    BIO_set_fp(b, fp, BIO_NOCLOSE);
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0
    ret = ECPKParameters_print(b, x, off);
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0
    BIO_free(b);
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0
    return ret;
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0
}
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int EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
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0
{
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0
    BIO *b;
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0
    int ret;
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0
    if ((b = BIO_new(BIO_s_file())) == NULL) {
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0
        ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
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0
        return 0;
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0
    }
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0
    BIO_set_fp(b, fp, BIO_NOCLOSE);
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0
    ret = EC_KEY_print(b, x, off);
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0
    BIO_free(b);
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0
    return ret;
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0
}
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int ECParameters_print_fp(FILE *fp, const EC_KEY *x)
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0
{
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0
    BIO *b;
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0
    int ret;
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0
    if ((b = BIO_new(BIO_s_file())) == NULL) {
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0
        ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB);
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0
        return 0;
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0
    }
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0
    BIO_set_fp(b, fp, BIO_NOCLOSE);
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0
    ret = ECParameters_print(b, x);
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0
    BIO_free(b);
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0
    return ret;
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0
}
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#endif /* OPENSSL_NO_STDIO */
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static int print_bin(BIO *fp, const char *str, const unsigned char *num,
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                     size_t len, int off);
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int ECPKParameters_print(BIO *bp, const EC_GROUP *x, int off)
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0
{
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0
    int ret = 0, reason = ERR_R_BIO_LIB;
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0
    BN_CTX *ctx = NULL;
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0
    const EC_POINT *point = NULL;
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0
    BIGNUM *p = NULL, *a = NULL, *b = NULL;
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0
    unsigned char *gen_buf = NULL;
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0
    const BIGNUM *order = NULL, *cofactor = NULL;
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0
    const unsigned char *seed;
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0
    size_t seed_len = 0, gen_buf_len = 0;
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0
    static const char *gen_compressed = "Generator (compressed):";
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0
    static const char *gen_uncompressed = "Generator (uncompressed):";
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0
    static const char *gen_hybrid = "Generator (hybrid):";
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0
    if (!x) {
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0
        reason = ERR_R_PASSED_NULL_PARAMETER;
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0
        goto err;
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0
    }
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0
    ctx = BN_CTX_new();
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0
    if (ctx == NULL) {
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0
        reason = ERR_R_BN_LIB;
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0
        goto err;
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0
    }
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0
    if (EC_GROUP_get_asn1_flag(x)) {
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        /* the curve parameter are given by an asn1 OID */
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0
        int nid;
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0
        const char *nname;
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0
        if (!BIO_indent(bp, off, 128))
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0
            goto err;
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0
        nid = EC_GROUP_get_curve_name(x);
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0
        if (nid == 0)
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0
            goto err;
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0
        if (BIO_printf(bp, "ASN1 OID: %s", OBJ_nid2sn(nid)) <= 0)
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0
            goto err;
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0
        if (BIO_printf(bp, "\n") <= 0)
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0
            goto err;
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0
        nname = EC_curve_nid2nist(nid);
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0
        if (nname) {
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0
            if (!BIO_indent(bp, off, 128))
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0
                goto err;
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0
            if (BIO_printf(bp, "NIST CURVE: %s\n", nname) <= 0)
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0
                goto err;
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0
        }
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0
    } else {
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0
        const char *form_str;
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        /* explicit parameters */
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0
        int is_char_two = 0;
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0
        point_conversion_form_t form;
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0
        int tmp_nid = EC_GROUP_get_field_type(x);
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0
        if (tmp_nid == NID_X9_62_characteristic_two_field)
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0
            is_char_two = 1;
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128
0
        if ((p = BN_new()) == NULL || (a = BN_new()) == NULL ||
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0
            (b = BN_new()) == NULL) {
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0
            reason = ERR_R_BN_LIB;
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0
            goto err;
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0
        }
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0
        if (!EC_GROUP_get_curve(x, p, a, b, ctx)) {
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0
            reason = ERR_R_EC_LIB;
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0
            goto err;
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0
        }
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0
        if ((point = EC_GROUP_get0_generator(x)) == NULL) {
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0
            reason = ERR_R_EC_LIB;
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0
            goto err;
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0
        }
143
0
        order = EC_GROUP_get0_order(x);
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0
        cofactor = EC_GROUP_get0_cofactor(x);
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0
        if (order == NULL) {
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0
            reason = ERR_R_EC_LIB;
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0
            goto err;
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0
        }
149
150
0
        form = EC_GROUP_get_point_conversion_form(x);
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152
0
        gen_buf_len = EC_POINT_point2buf(x, point, form, &gen_buf, ctx);
153
0
        if (gen_buf_len == 0) {
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0
            reason = ERR_R_EC_LIB;
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0
            goto err;
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0
        }
157
158
0
        if ((seed = EC_GROUP_get0_seed(x)) != NULL)
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0
            seed_len = EC_GROUP_get_seed_len(x);
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161
0
        if (!BIO_indent(bp, off, 128))
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0
            goto err;
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164
        /* print the 'short name' of the field type */
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0
        if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(tmp_nid))
166
0
            <= 0)
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0
            goto err;
168
169
0
        if (is_char_two) {
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            /* print the 'short name' of the base type OID */
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0
            int basis_type = EC_GROUP_get_basis_type(x);
172
0
            if (basis_type == 0)
173
0
                goto err;
174
175
0
            if (!BIO_indent(bp, off, 128))
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0
                goto err;
177
178
0
            if (BIO_printf(bp, "Basis Type: %s\n",
179
0
                           OBJ_nid2sn(basis_type)) <= 0)
180
0
                goto err;
181
182
            /* print the polynomial */
183
0
            if ((p != NULL) && !ASN1_bn_print(bp, "Polynomial:", p, NULL,
184
0
                                              off))
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0
                goto err;
186
0
        } else {
187
0
            if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, NULL, off))
188
0
                goto err;
189
0
        }
190
0
        if ((a != NULL) && !ASN1_bn_print(bp, "A:   ", a, NULL, off))
191
0
            goto err;
192
0
        if ((b != NULL) && !ASN1_bn_print(bp, "B:   ", b, NULL, off))
193
0
            goto err;
194
195
0
        if (form == POINT_CONVERSION_COMPRESSED)
196
0
            form_str = gen_compressed;
197
0
        else if (form == POINT_CONVERSION_UNCOMPRESSED)
198
0
            form_str = gen_uncompressed;
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0
        else
200
0
            form_str = gen_hybrid;
201
0
        if (gen_buf != NULL
202
0
            && !print_bin(bp, form_str, gen_buf, gen_buf_len, off))
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0
            goto err;
204
205
0
        if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, NULL, off))
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0
            goto err;
207
0
        if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor,
208
0
                                                 NULL, off))
209
0
            goto err;
210
0
        if (seed && !print_bin(bp, "Seed:", seed, seed_len, off))
211
0
            goto err;
212
0
    }
213
0
    ret = 1;
214
0
 err:
215
0
    if (!ret)
216
0
        ERR_raise(ERR_LIB_EC, reason);
217
0
    BN_free(p);
218
0
    BN_free(a);
219
0
    BN_free(b);
220
0
    OPENSSL_clear_free(gen_buf, gen_buf_len);
221
0
    BN_CTX_free(ctx);
222
0
    return ret;
223
0
}
224
225
static int print_bin(BIO *fp, const char *name, const unsigned char *buf,
226
                     size_t len, int off)
227
0
{
228
0
    size_t i;
229
0
    char str[128 + 1 + 4];
230
231
0
    if (buf == NULL)
232
0
        return 1;
233
0
    if (off > 0) {
234
0
        if (off > 128)
235
0
            off = 128;
236
0
        memset(str, ' ', off);
237
0
        if (BIO_write(fp, str, off) <= 0)
238
0
            return 0;
239
0
    } else {
240
0
        off = 0;
241
0
    }
242
243
0
    if (BIO_printf(fp, "%s", name) <= 0)
244
0
        return 0;
245
246
0
    for (i = 0; i < len; i++) {
247
0
        if ((i % 15) == 0) {
248
0
            str[0] = '\n';
249
0
            memset(&(str[1]), ' ', off + 4);
250
0
            if (BIO_write(fp, str, off + 1 + 4) <= 0)
251
0
                return 0;
252
0
        }
253
0
        if (BIO_printf(fp, "%02x%s", buf[i], ((i + 1) == len) ? "" : ":") <=
254
0
            0)
255
0
            return 0;
256
0
    }
257
0
    if (BIO_write(fp, "\n", 1) <= 0)
258
0
        return 0;
259
260
0
    return 1;
261
0
}
262
#endif /* OPENSSL_NO_DEPRECATED_3_0 */