зеркало из https://github.com/github/ruby.git
533 строки
12 KiB
C
533 строки
12 KiB
C
/*
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* $Id$
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* 'OpenSSL for Ruby' project
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* Copyright (C) 2001-2002 Michal Rokos <m.rokos@sh.cvut.cz>
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* All rights reserved.
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*/
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/*
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* This program is licenced under the same licence as Ruby.
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* (See the file 'LICENCE'.)
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*/
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#if !defined(OPENSSL_NO_DH)
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#include "ossl.h"
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#define GetPKeyDH(obj, pkey) do { \
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GetPKey(obj, pkey); \
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if (EVP_PKEY_type(pkey->type) != EVP_PKEY_DH) { /* PARANOIA? */ \
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ossl_raise(rb_eRuntimeError, "THIS IS NOT A DH!") ; \
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} \
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} while (0)
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#define DH_HAS_PRIVATE(dh) ((dh)->priv_key)
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#ifdef OSSL_ENGINE_ENABLED
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# define DH_PRIVATE(dh) (DH_HAS_PRIVATE(dh) || (dh)->engine)
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#else
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# define DH_PRIVATE(dh) DH_HAS_PRIVATE(dh)
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#endif
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/*
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* Classes
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*/
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VALUE cDH;
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VALUE eDHError;
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/*
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* Public
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*/
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static VALUE
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dh_instance(VALUE klass, DH *dh)
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{
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EVP_PKEY *pkey;
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VALUE obj;
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if (!dh) {
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return Qfalse;
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}
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if (!(pkey = EVP_PKEY_new())) {
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return Qfalse;
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}
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if (!EVP_PKEY_assign_DH(pkey, dh)) {
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EVP_PKEY_free(pkey);
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return Qfalse;
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}
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WrapPKey(klass, obj, pkey);
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return obj;
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}
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VALUE
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ossl_dh_new(EVP_PKEY *pkey)
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{
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VALUE obj;
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if (!pkey) {
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obj = dh_instance(cDH, DH_new());
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} else {
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if (EVP_PKEY_type(pkey->type) != EVP_PKEY_DH) {
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ossl_raise(rb_eTypeError, "Not a DH key!");
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}
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WrapPKey(cDH, obj, pkey);
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}
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if (obj == Qfalse) {
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ossl_raise(eDHError, NULL);
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}
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return obj;
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}
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/*
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* Private
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*/
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static DH *
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dh_generate(int size, int gen)
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{
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DH *dh;
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dh = DH_generate_parameters(size, gen,
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rb_block_given_p() ? ossl_generate_cb : NULL,
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NULL);
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if (!dh) return 0;
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if (!DH_generate_key(dh)) {
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DH_free(dh);
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return 0;
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}
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return dh;
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}
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/*
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* call-seq:
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* DH.generate(size [, generator]) -> dh
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*
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* === Parameters
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* * +size+ is an integer representing the desired key size. Keys smaller than 1024 should be considered insecure.
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* * +generator+ is a small number > 1, typically 2 or 5.
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*
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*/
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static VALUE
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ossl_dh_s_generate(int argc, VALUE *argv, VALUE klass)
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{
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DH *dh ;
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int g = 2;
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VALUE size, gen, obj;
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if (rb_scan_args(argc, argv, "11", &size, &gen) == 2) {
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g = NUM2INT(gen);
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}
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dh = dh_generate(NUM2INT(size), g);
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obj = dh_instance(klass, dh);
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if (obj == Qfalse) {
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DH_free(dh);
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ossl_raise(eDHError, NULL);
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}
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return obj;
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}
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/*
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* call-seq:
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* DH.new([size [, generator] | string]) -> dh
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*
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* === Parameters
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* * +size+ is an integer representing the desired key size. Keys smaller than 1024 should be considered insecure.
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* * +generator+ is a small number > 1, typically 2 or 5.
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* * +string+ contains the DER or PEM encoded key.
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*
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* === Examples
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* * DH.new -> dh
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* * DH.new(1024) -> dh
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* * DH.new(1024, 5) -> dh
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* * DH.new(File.read('key.pem')) -> dh
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*/
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static VALUE
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ossl_dh_initialize(int argc, VALUE *argv, VALUE self)
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{
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EVP_PKEY *pkey;
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DH *dh;
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int g = 2;
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BIO *in;
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VALUE arg, gen;
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GetPKey(self, pkey);
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if(rb_scan_args(argc, argv, "02", &arg, &gen) == 0) {
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dh = DH_new();
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}
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else if (FIXNUM_P(arg)) {
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if (!NIL_P(gen)) {
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g = NUM2INT(gen);
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}
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if (!(dh = dh_generate(FIX2INT(arg), g))) {
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ossl_raise(eDHError, NULL);
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}
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}
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else {
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arg = ossl_to_der_if_possible(arg);
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in = ossl_obj2bio(arg);
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dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
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if (!dh){
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(void)BIO_reset(in);
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dh = d2i_DHparams_bio(in, NULL);
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}
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BIO_free(in);
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if (!dh) ossl_raise(eDHError, NULL);
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}
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if (!EVP_PKEY_assign_DH(pkey, dh)) {
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DH_free(dh);
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ossl_raise(eDHError, NULL);
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}
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return self;
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}
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/*
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* call-seq:
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* dh.public? -> true | false
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*
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*/
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static VALUE
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ossl_dh_is_public(VALUE self)
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{
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EVP_PKEY *pkey;
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GetPKeyDH(self, pkey);
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return (pkey->pkey.dh->pub_key) ? Qtrue : Qfalse;
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}
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/*
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* call-seq:
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* dh.private? -> true | false
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*
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*/
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static VALUE
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ossl_dh_is_private(VALUE self)
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{
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EVP_PKEY *pkey;
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GetPKeyDH(self, pkey);
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return (DH_PRIVATE(pkey->pkey.dh)) ? Qtrue : Qfalse;
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}
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/*
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* call-seq:
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* dh.to_pem -> aString
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*
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*/
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static VALUE
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ossl_dh_export(VALUE self)
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{
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EVP_PKEY *pkey;
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BIO *out;
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VALUE str;
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GetPKeyDH(self, pkey);
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if (!(out = BIO_new(BIO_s_mem()))) {
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ossl_raise(eDHError, NULL);
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}
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if (!PEM_write_bio_DHparams(out, pkey->pkey.dh)) {
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BIO_free(out);
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ossl_raise(eDHError, NULL);
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}
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str = ossl_membio2str(out);
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return str;
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}
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/*
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* call-seq:
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* dh.to_der -> aString
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*
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*/
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static VALUE
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ossl_dh_to_der(VALUE self)
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{
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EVP_PKEY *pkey;
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unsigned char *p;
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long len;
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VALUE str;
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GetPKeyDH(self, pkey);
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if((len = i2d_DHparams(pkey->pkey.dh, NULL)) <= 0)
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ossl_raise(eDHError, NULL);
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str = rb_str_new(0, len);
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p = (unsigned char *)RSTRING_PTR(str);
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if(i2d_DHparams(pkey->pkey.dh, &p) < 0)
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ossl_raise(eDHError, NULL);
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ossl_str_adjust(str, p);
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return str;
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}
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/*
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* call-seq:
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* dh.params -> hash
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*
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* Stores all parameters of key to the hash
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* INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
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* Don't use :-)) (I's up to you)
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*/
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static VALUE
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ossl_dh_get_params(VALUE self)
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{
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EVP_PKEY *pkey;
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VALUE hash;
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GetPKeyDH(self, pkey);
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hash = rb_hash_new();
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rb_hash_aset(hash, rb_str_new2("p"), ossl_bn_new(pkey->pkey.dh->p));
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rb_hash_aset(hash, rb_str_new2("g"), ossl_bn_new(pkey->pkey.dh->g));
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rb_hash_aset(hash, rb_str_new2("pub_key"), ossl_bn_new(pkey->pkey.dh->pub_key));
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rb_hash_aset(hash, rb_str_new2("priv_key"), ossl_bn_new(pkey->pkey.dh->priv_key));
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return hash;
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}
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/*
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* call-seq:
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* dh.to_text -> aString
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*
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* Prints all parameters of key to buffer
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* INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
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* Don't use :-)) (I's up to you)
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*/
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static VALUE
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ossl_dh_to_text(VALUE self)
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{
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EVP_PKEY *pkey;
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BIO *out;
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VALUE str;
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GetPKeyDH(self, pkey);
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if (!(out = BIO_new(BIO_s_mem()))) {
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ossl_raise(eDHError, NULL);
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}
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if (!DHparams_print(out, pkey->pkey.dh)) {
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BIO_free(out);
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ossl_raise(eDHError, NULL);
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}
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str = ossl_membio2str(out);
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return str;
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}
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/*
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* call-seq:
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* dh.public_key -> aDH
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*
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* Makes new instance DH PUBLIC_KEY from PRIVATE_KEY
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*/
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static VALUE
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ossl_dh_to_public_key(VALUE self)
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{
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EVP_PKEY *pkey;
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DH *dh;
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VALUE obj;
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GetPKeyDH(self, pkey);
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dh = DHparams_dup(pkey->pkey.dh); /* err check perfomed by dh_instance */
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obj = dh_instance(CLASS_OF(self), dh);
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if (obj == Qfalse) {
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DH_free(dh);
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ossl_raise(eDHError, NULL);
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}
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return obj;
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}
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/*
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* call-seq:
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* dh.check_params -> true | false
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*
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*/
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static VALUE
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ossl_dh_check_params(VALUE self)
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{
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DH *dh;
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EVP_PKEY *pkey;
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int codes;
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GetPKeyDH(self, pkey);
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dh = pkey->pkey.dh;
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if (!DH_check(dh, &codes)) {
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return Qfalse;
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}
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return codes == 0 ? Qtrue : Qfalse;
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}
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/*
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* call-seq:
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* dh.generate_key -> self
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*
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*/
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static VALUE
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ossl_dh_generate_key(VALUE self)
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{
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DH *dh;
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EVP_PKEY *pkey;
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GetPKeyDH(self, pkey);
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dh = pkey->pkey.dh;
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if (!DH_generate_key(dh))
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ossl_raise(eDHError, "Failed to generate key");
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return self;
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}
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/*
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* call-seq:
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* dh.compute_key(pub_bn) -> aString
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*
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* === Parameters
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* * +pub_bn+ is a OpenSSL::BN.
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*
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* Returns aString containing a shared secret computed from the other parties public value.
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*
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* See DH_compute_key() for further information.
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*
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*/
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static VALUE
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ossl_dh_compute_key(VALUE self, VALUE pub)
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{
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DH *dh;
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EVP_PKEY *pkey;
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BIGNUM *pub_key;
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VALUE str;
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int len;
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GetPKeyDH(self, pkey);
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dh = pkey->pkey.dh;
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pub_key = GetBNPtr(pub);
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len = DH_size(dh);
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str = rb_str_new(0, len);
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if ((len = DH_compute_key((unsigned char *)RSTRING_PTR(str), pub_key, dh)) < 0) {
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ossl_raise(eDHError, NULL);
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}
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rb_str_set_len(str, len);
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return str;
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}
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OSSL_PKEY_BN(dh, p);
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OSSL_PKEY_BN(dh, g);
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OSSL_PKEY_BN(dh, pub_key);
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OSSL_PKEY_BN(dh, priv_key);
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/*
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* -----BEGIN DH PARAMETERS-----
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* MEYCQQD0zXHljRg/mJ9PYLACLv58Cd8VxBxxY7oEuCeURMiTqEhMym16rhhKgZG2
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* zk2O9uUIBIxSj+NKMURHGaFKyIvLAgEC
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* -----END DH PARAMETERS-----
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*/
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static unsigned char DEFAULT_DH_512_PRIM[] = {
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0xf4, 0xcd, 0x71, 0xe5, 0x8d, 0x18, 0x3f, 0x98,
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0x9f, 0x4f, 0x60, 0xb0, 0x02, 0x2e, 0xfe, 0x7c,
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0x09, 0xdf, 0x15, 0xc4, 0x1c, 0x71, 0x63, 0xba,
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0x04, 0xb8, 0x27, 0x94, 0x44, 0xc8, 0x93, 0xa8,
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0x48, 0x4c, 0xca, 0x6d, 0x7a, 0xae, 0x18, 0x4a,
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0x81, 0x91, 0xb6, 0xce, 0x4d, 0x8e, 0xf6, 0xe5,
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0x08, 0x04, 0x8c, 0x52, 0x8f, 0xe3, 0x4a, 0x31,
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0x44, 0x47, 0x19, 0xa1, 0x4a, 0xc8, 0x8b, 0xcb,
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};
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static unsigned char DEFAULT_DH_512_GEN[] = { 0x02 };
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DH *OSSL_DEFAULT_DH_512 = NULL;
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/*
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* -----BEGIN DH PARAMETERS-----
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* MIGHAoGBAJ0lOVy0VIr/JebWn0zDwY2h+rqITFOpdNr6ugsgvkDXuucdcChhYExJ
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* AV/ZD2AWPbrTqV76mGRgJg4EddgT1zG0jq3rnFdMj2XzkBYx3BVvfR0Arnby0RHR
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* T4h7KZ/2zmjvV+eF8kBUHBJAojUlzxKj4QeO2x20FP9X5xmNUXeDAgEC
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* -----END DH PARAMETERS-----
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*/
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static unsigned char DEFAULT_DH_1024_PRIM[] = {
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0x9d, 0x25, 0x39, 0x5c, 0xb4, 0x54, 0x8a, 0xff,
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0x25, 0xe6, 0xd6, 0x9f, 0x4c, 0xc3, 0xc1, 0x8d,
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0xa1, 0xfa, 0xba, 0x88, 0x4c, 0x53, 0xa9, 0x74,
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0xda, 0xfa, 0xba, 0x0b, 0x20, 0xbe, 0x40, 0xd7,
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0xba, 0xe7, 0x1d, 0x70, 0x28, 0x61, 0x60, 0x4c,
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0x49, 0x01, 0x5f, 0xd9, 0x0f, 0x60, 0x16, 0x3d,
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0xba, 0xd3, 0xa9, 0x5e, 0xfa, 0x98, 0x64, 0x60,
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0x26, 0x0e, 0x04, 0x75, 0xd8, 0x13, 0xd7, 0x31,
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0xb4, 0x8e, 0xad, 0xeb, 0x9c, 0x57, 0x4c, 0x8f,
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0x65, 0xf3, 0x90, 0x16, 0x31, 0xdc, 0x15, 0x6f,
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0x7d, 0x1d, 0x00, 0xae, 0x76, 0xf2, 0xd1, 0x11,
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0xd1, 0x4f, 0x88, 0x7b, 0x29, 0x9f, 0xf6, 0xce,
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0x68, 0xef, 0x57, 0xe7, 0x85, 0xf2, 0x40, 0x54,
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0x1c, 0x12, 0x40, 0xa2, 0x35, 0x25, 0xcf, 0x12,
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0xa3, 0xe1, 0x07, 0x8e, 0xdb, 0x1d, 0xb4, 0x14,
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0xff, 0x57, 0xe7, 0x19, 0x8d, 0x51, 0x77, 0x83
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};
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static unsigned char DEFAULT_DH_1024_GEN[] = { 0x02 };
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DH *OSSL_DEFAULT_DH_1024 = NULL;
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static DH*
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ossl_create_dh(unsigned char *p, size_t plen, unsigned char *g, size_t glen)
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{
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DH *dh;
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if ((dh = DH_new()) == NULL) ossl_raise(eDHError, NULL);
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dh->p = BN_bin2bn(p, plen, NULL);
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dh->g = BN_bin2bn(g, glen, NULL);
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if (dh->p == NULL || dh->g == NULL){
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DH_free(dh);
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ossl_raise(eDHError, NULL);
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}
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return dh;
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}
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/*
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* INIT
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*/
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void
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Init_ossl_dh()
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{
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#if 0 /* let rdoc know about mOSSL and mPKey */
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mOSSL = rb_define_module("OpenSSL");
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mPKey = rb_define_module_under(mOSSL, "PKey");
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#endif
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eDHError = rb_define_class_under(mPKey, "DHError", ePKeyError);
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cDH = rb_define_class_under(mPKey, "DH", cPKey);
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rb_define_singleton_method(cDH, "generate", ossl_dh_s_generate, -1);
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rb_define_method(cDH, "initialize", ossl_dh_initialize, -1);
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rb_define_method(cDH, "public?", ossl_dh_is_public, 0);
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rb_define_method(cDH, "private?", ossl_dh_is_private, 0);
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rb_define_method(cDH, "to_text", ossl_dh_to_text, 0);
|
|
rb_define_method(cDH, "export", ossl_dh_export, 0);
|
|
rb_define_alias(cDH, "to_pem", "export");
|
|
rb_define_alias(cDH, "to_s", "export");
|
|
rb_define_method(cDH, "to_der", ossl_dh_to_der, 0);
|
|
rb_define_method(cDH, "public_key", ossl_dh_to_public_key, 0);
|
|
rb_define_method(cDH, "params_ok?", ossl_dh_check_params, 0);
|
|
rb_define_method(cDH, "generate_key!", ossl_dh_generate_key, 0);
|
|
rb_define_method(cDH, "compute_key", ossl_dh_compute_key, 1);
|
|
DEF_OSSL_PKEY_BN(cDH, dh, p);
|
|
DEF_OSSL_PKEY_BN(cDH, dh, g);
|
|
DEF_OSSL_PKEY_BN(cDH, dh, pub_key);
|
|
DEF_OSSL_PKEY_BN(cDH, dh, priv_key);
|
|
rb_define_method(cDH, "params", ossl_dh_get_params, 0);
|
|
|
|
OSSL_DEFAULT_DH_512 = ossl_create_dh(
|
|
DEFAULT_DH_512_PRIM, sizeof(DEFAULT_DH_512_PRIM),
|
|
DEFAULT_DH_512_GEN, sizeof(DEFAULT_DH_512_GEN));
|
|
OSSL_DEFAULT_DH_1024 = ossl_create_dh(
|
|
DEFAULT_DH_1024_PRIM, sizeof(DEFAULT_DH_1024_PRIM),
|
|
DEFAULT_DH_1024_GEN, sizeof(DEFAULT_DH_1024_GEN));
|
|
}
|
|
|
|
#else /* defined NO_DH */
|
|
void
|
|
Init_ossl_dh()
|
|
{
|
|
}
|
|
#endif /* NO_DH */
|
|
|