/* $OpenBSD: eck_prn.c,v 1.30 2023/11/21 22:05:33 tb Exp $ */ /* * 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 #include #include #include #include #include #include "ec_local.h" int ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off) { BIO *b; int ret; if ((b = BIO_new(BIO_s_file())) == NULL) { ECerror(ERR_R_BUF_LIB); return (0); } BIO_set_fp(b, fp, BIO_NOCLOSE); ret = ECPKParameters_print(b, x, off); BIO_free(b); return (ret); } LCRYPTO_ALIAS(ECPKParameters_print_fp); 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) { ECerror(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); } LCRYPTO_ALIAS(EC_KEY_print_fp); int ECParameters_print_fp(FILE *fp, const EC_KEY *x) { BIO *b; int ret; if ((b = BIO_new(BIO_s_file())) == NULL) { ECerror(ERR_R_BIO_LIB); return (0); } BIO_set_fp(b, fp, BIO_NOCLOSE); ret = ECParameters_print(b, x); BIO_free(b); return (ret); } LCRYPTO_ALIAS(ECParameters_print_fp); int EC_KEY_print(BIO *bp, const EC_KEY *x, int off) { EVP_PKEY *pk; int ret = 0; if ((pk = EVP_PKEY_new()) == NULL) goto err; if (!EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x)) goto err; ret = EVP_PKEY_print_private(bp, pk, off, NULL); err: EVP_PKEY_free(pk); return ret; } LCRYPTO_ALIAS(EC_KEY_print); int ECParameters_print(BIO *bp, const EC_KEY *x) { EVP_PKEY *pk; int ret = 0; if ((pk = EVP_PKEY_new()) == NULL) goto err; if (!EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x)) goto err; ret = EVP_PKEY_print_params(bp, pk, 4, NULL); err: EVP_PKEY_free(pk); return ret; } LCRYPTO_ALIAS(ECParameters_print); static int ecpk_print_asn1_parameters(BIO *bp, const EC_GROUP *group, int off) { const char *nist_name; int nid; int ret = 0; if (!BIO_indent(bp, off, 128)) { ECerror(ERR_R_BIO_LIB); goto err; } if ((nid = EC_GROUP_get_curve_name(group)) == NID_undef) { ECerror(ERR_R_INTERNAL_ERROR); goto err; } if (BIO_printf(bp, "ASN1 OID: %s\n", OBJ_nid2sn(nid)) <= 0) { ECerror(ERR_R_BIO_LIB); goto err; } if ((nist_name = EC_curve_nid2nist(nid)) != NULL) { if (!BIO_indent(bp, off, 128)) { ECerror(ERR_R_BIO_LIB); goto err; } if (BIO_printf(bp, "NIST CURVE: %s\n", nist_name) <= 0) { ECerror(ERR_R_BIO_LIB); goto err; } } ret = 1; err: return ret; } static int ecpk_print_explicit_parameters(BIO *bp, const EC_GROUP *group, int off) { BN_CTX *ctx = NULL; const BIGNUM *order; BIGNUM *p, *a, *b, *cofactor; BIGNUM *gen = NULL; const EC_POINT *generator; const char *conversion_form; const unsigned char *seed; size_t seed_len; point_conversion_form_t form; int nid; int ret = 0; if ((ctx = BN_CTX_new()) == NULL) { ECerror(ERR_R_MALLOC_FAILURE); goto err; } BN_CTX_start(ctx); if ((p = BN_CTX_get(ctx)) == NULL) goto err; if ((a = BN_CTX_get(ctx)) == NULL) goto err; if ((b = BN_CTX_get(ctx)) == NULL) goto err; if ((cofactor = BN_CTX_get(ctx)) == NULL) goto err; if ((gen = BN_CTX_get(ctx)) == NULL) goto err; if (!EC_GROUP_get_curve(group, p, a, b, ctx)) { ECerror(ERR_R_EC_LIB); goto err; } if ((order = EC_GROUP_get0_order(group)) == NULL) { ECerror(ERR_R_EC_LIB); goto err; } if (!EC_GROUP_get_cofactor(group, cofactor, NULL)) { ECerror(ERR_R_EC_LIB); goto err; } if ((generator = EC_GROUP_get0_generator(group)) == NULL) { ECerror(ERR_R_EC_LIB); goto err; } form = EC_GROUP_get_point_conversion_form(group); if (EC_POINT_point2bn(group, generator, form, gen, ctx) == NULL) { ECerror(ERR_R_EC_LIB); goto err; } if (!BIO_indent(bp, off, 128)) goto err; nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group)); if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(nid)) <= 0) goto err; if (!bn_printf(bp, p, off, "Prime:")) goto err; if (!bn_printf(bp, a, off, "A: ")) goto err; if (!bn_printf(bp, b, off, "B: ")) goto err; if (form == POINT_CONVERSION_COMPRESSED) conversion_form = "compressed"; else if (form == POINT_CONVERSION_UNCOMPRESSED) conversion_form = "uncompressed"; else if (form == POINT_CONVERSION_HYBRID) conversion_form = "hybrid"; else conversion_form = "unknown"; if (!bn_printf(bp, gen, off, "Generator (%s):", conversion_form)) goto err; if (!bn_printf(bp, order, off, "Order: ")) goto err; if (!bn_printf(bp, cofactor, off, "Cofactor: ")) goto err; if ((seed = EC_GROUP_get0_seed(group)) != NULL) { size_t i; seed_len = EC_GROUP_get_seed_len(group); /* XXX - ecx_buf_print() has a CBS version of this - dedup. */ if (!BIO_indent(bp, off, 128)) goto err; if (BIO_printf(bp, "Seed:") <= 0) goto err; for (i = 0; i < seed_len; i++) { const char *sep = ":"; if (i % 15 == 0) { if (BIO_printf(bp, "\n") <= 0) goto err; if (!BIO_indent(bp, off + 4, 128)) goto err; } if (i + 1 == seed_len) sep = ""; if (BIO_printf(bp, "%02x%s", seed[i], sep) <= 0) goto err; } if (BIO_printf(bp, "\n") <= 0) goto err; } ret = 1; err: BN_CTX_end(ctx); BN_CTX_free(ctx); return ret; } int ECPKParameters_print(BIO *bp, const EC_GROUP *group, int off) { if (group == NULL) { ECerror(ERR_R_PASSED_NULL_PARAMETER); return 0; } if (EC_GROUP_get_asn1_flag(group)) return ecpk_print_asn1_parameters(bp, group, off); return ecpk_print_explicit_parameters(bp, group, off); } LCRYPTO_ALIAS(ECPKParameters_print);