| /* |
| * Copyright 2006-2021 The OpenSSL Project Authors. All Rights Reserved. |
| * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved |
| * |
| * Licensed under the Apache License 2.0 (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 |
| */ |
| |
| #include "internal/deprecated.h" |
| |
| #include <stdio.h> |
| #include "internal/cryptlib.h" |
| #include <openssl/evp.h> |
| #include <openssl/ec.h> |
| #include <openssl/bn.h> |
| |
| #ifndef OPENSSL_NO_DEPRECATED_3_0 |
| # 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) { |
| ERR_raise(ERR_LIB_EC, 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) { |
| ERR_raise(ERR_LIB_EC, 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) { |
| ERR_raise(ERR_LIB_EC, ERR_R_BIO_LIB); |
| return 0; |
| } |
| BIO_set_fp(b, fp, BIO_NOCLOSE); |
| ret = ECParameters_print(b, x); |
| BIO_free(b); |
| return ret; |
| } |
| #endif /* OPENSSL_NO_STDIO */ |
| |
| 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; |
| unsigned char *gen_buf = NULL; |
| const BIGNUM *order = NULL, *cofactor = NULL; |
| const unsigned char *seed; |
| size_t seed_len = 0, gen_buf_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 { |
| const char *form_str; |
| /* explicit parameters */ |
| int is_char_two = 0; |
| point_conversion_form_t form; |
| int tmp_nid = EC_GROUP_get_field_type(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; |
| } |
| |
| if (!EC_GROUP_get_curve(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); |
| |
| gen_buf_len = EC_POINT_point2buf(x, point, form, &gen_buf, ctx); |
| if (gen_buf_len == 0) { |
| 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) |
| form_str = gen_compressed; |
| else if (form == POINT_CONVERSION_UNCOMPRESSED) |
| form_str = gen_uncompressed; |
| else |
| form_str = gen_hybrid; |
| if (gen_buf != NULL |
| && !print_bin(bp, form_str, gen_buf, gen_buf_len, 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) |
| ERR_raise(ERR_LIB_EC, reason); |
| BN_free(p); |
| BN_free(a); |
| BN_free(b); |
| OPENSSL_clear_free(gen_buf, gen_buf_len); |
| 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 + 1 + 4]; |
| |
| 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; |
| } |
| #endif /* OPENSSL_NO_DEPRECATED_3_0 */ |
