| /* crypto/ec/eck_prn.c */ |
| /* |
| * Written by Nils Larsch for the OpenSSL project. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 1998-2005 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 |
| * openssl-core@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). |
| * |
| */ |
| /* ==================================================================== |
| * 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 "cryptlib.h" |
| #include <openssl/evp.h> |
| #include <openssl/ec.h> |
| #include <openssl/bn.h> |
| |
| #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); |
| } |
| |
| 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 EC_KEY_print(BIO *bp, const EC_KEY *x, int off) |
| { |
| EVP_PKEY *pk; |
| int ret; |
| pk = EVP_PKEY_new(); |
| if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x)) |
| return 0; |
| ret = EVP_PKEY_print_private(bp, pk, off, NULL); |
| EVP_PKEY_free(pk); |
| return ret; |
| } |
| |
| int ECParameters_print(BIO *bp, const EC_KEY *x) |
| { |
| EVP_PKEY *pk; |
| int ret; |
| pk = EVP_PKEY_new(); |
| if (!pk || !EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *)x)) |
| return 0; |
| ret = EVP_PKEY_print_params(bp, pk, 4, NULL); |
| EVP_PKEY_free(pk); |
| return ret; |
| } |
| |
| 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) |
| { |
| unsigned char *buffer = NULL; |
| size_t buf_len = 0, i; |
| 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, |
| *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; |
| |
| 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; |
| } 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 || (order = BN_new()) == NULL || |
| (cofactor = 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; |
| } |
| 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 ((seed = EC_GROUP_get0_seed(x)) != NULL) |
| seed_len = EC_GROUP_get_seed_len(x); |
| |
| buf_len += 10; |
| if ((buffer = OPENSSL_malloc(buf_len)) == NULL) { |
| reason = ERR_R_MALLOC_FAILURE; |
| goto err; |
| } |
| |
| 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, buffer, |
| off)) |
| goto err; |
| } else { |
| if ((p != NULL) && !ASN1_bn_print(bp, "Prime:", p, buffer, off)) |
| goto err; |
| } |
| if ((a != NULL) && !ASN1_bn_print(bp, "A: ", a, buffer, off)) |
| goto err; |
| if ((b != NULL) && !ASN1_bn_print(bp, "B: ", b, buffer, off)) |
| goto err; |
| if (form == POINT_CONVERSION_COMPRESSED) { |
| if ((gen != NULL) && !ASN1_bn_print(bp, gen_compressed, gen, |
| buffer, off)) |
| goto err; |
| } else if (form == POINT_CONVERSION_UNCOMPRESSED) { |
| if ((gen != NULL) && !ASN1_bn_print(bp, gen_uncompressed, gen, |
| buffer, off)) |
| goto err; |
| } else { /* form == POINT_CONVERSION_HYBRID */ |
| |
| if ((gen != NULL) && !ASN1_bn_print(bp, gen_hybrid, gen, |
| buffer, off)) |
| goto err; |
| } |
| if ((order != NULL) && !ASN1_bn_print(bp, "Order: ", order, |
| buffer, off)) |
| goto err; |
| if ((cofactor != NULL) && !ASN1_bn_print(bp, "Cofactor: ", cofactor, |
| buffer, 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); |
| 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 (ctx) |
| BN_CTX_free(ctx); |
| if (buffer != NULL) |
| OPENSSL_free(buffer); |
| 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) { |
| if (off > 128) |
| off = 128; |
| memset(str, ' ', off); |
| if (BIO_write(fp, str, off) <= 0) |
| return 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; |
| } |