зеркало из https://github.com/github/ruby.git
1206 строки
25 KiB
C
1206 строки
25 KiB
C
/*
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* 'OpenSSL for Ruby' project
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* Copyright (C) 2001-2002 Technorama team <oss-ruby@technorama.net>
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* All rights reserved.
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*/
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/*
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* This program is licensed under the same licence as Ruby.
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* (See the file 'LICENCE'.)
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*/
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/* modified by Michal Rokos <m.rokos@sh.cvut.cz> */
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#include "ossl.h"
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#define NewBN(klass) \
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TypedData_Wrap_Struct((klass), &ossl_bn_type, 0)
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#define SetBN(obj, bn) do { \
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if (!(bn)) { \
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ossl_raise(rb_eRuntimeError, "BN wasn't initialized!"); \
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} \
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RTYPEDDATA_DATA(obj) = (bn); \
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} while (0)
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#define GetBN(obj, bn) do { \
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TypedData_Get_Struct((obj), BIGNUM, &ossl_bn_type, (bn)); \
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if (!(bn)) { \
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ossl_raise(rb_eRuntimeError, "BN wasn't initialized!"); \
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} \
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} while (0)
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static void
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ossl_bn_free(void *ptr)
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{
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BN_clear_free(ptr);
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}
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static const rb_data_type_t ossl_bn_type = {
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"OpenSSL/BN",
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{
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0, ossl_bn_free,
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},
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0, 0, RUBY_TYPED_FREE_IMMEDIATELY,
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};
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/*
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* Classes
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*/
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VALUE cBN;
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/* Document-class: OpenSSL::BNError
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*
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* Generic Error for all of OpenSSL::BN (big num)
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*/
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VALUE eBNError;
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/*
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* Public
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*/
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VALUE
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ossl_bn_new(const BIGNUM *bn)
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{
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BIGNUM *newbn;
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VALUE obj;
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obj = NewBN(cBN);
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newbn = bn ? BN_dup(bn) : BN_new();
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if (!newbn) {
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ossl_raise(eBNError, NULL);
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}
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SetBN(obj, newbn);
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return obj;
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}
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static BIGNUM *
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integer_to_bnptr(VALUE obj, BIGNUM *orig)
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{
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BIGNUM *bn;
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if (FIXNUM_P(obj)) {
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long i;
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unsigned char bin[sizeof(long)];
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long n = FIX2LONG(obj);
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unsigned long un = labs(n);
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for (i = sizeof(long) - 1; 0 <= i; i--) {
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bin[i] = un & 0xff;
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un >>= 8;
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}
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bn = BN_bin2bn(bin, sizeof(bin), orig);
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if (!bn)
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ossl_raise(eBNError, "BN_bin2bn");
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if (n < 0)
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BN_set_negative(bn, 1);
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}
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else { /* assuming Bignum */
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size_t len = rb_absint_size(obj, NULL);
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unsigned char *bin;
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VALUE buf;
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int sign;
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if (INT_MAX < len) {
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rb_raise(eBNError, "bignum too long");
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}
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bin = (unsigned char*)ALLOCV_N(unsigned char, buf, len);
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sign = rb_integer_pack(obj, bin, len, 1, 0, INTEGER_PACK_BIG_ENDIAN);
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bn = BN_bin2bn(bin, (int)len, orig);
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ALLOCV_END(buf);
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if (!bn)
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ossl_raise(eBNError, "BN_bin2bn");
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if (sign < 0)
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BN_set_negative(bn, 1);
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}
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return bn;
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}
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static VALUE
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try_convert_to_bn(VALUE obj)
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{
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BIGNUM *bn;
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VALUE newobj = Qnil;
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if (rb_obj_is_kind_of(obj, cBN))
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return obj;
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if (RB_INTEGER_TYPE_P(obj)) {
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newobj = NewBN(cBN); /* Handle potential mem leaks */
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bn = integer_to_bnptr(obj, NULL);
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SetBN(newobj, bn);
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}
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return newobj;
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}
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BIGNUM *
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ossl_bn_value_ptr(volatile VALUE *ptr)
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{
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VALUE tmp;
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BIGNUM *bn;
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tmp = try_convert_to_bn(*ptr);
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if (NIL_P(tmp))
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ossl_raise(rb_eTypeError, "Cannot convert into OpenSSL::BN");
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GetBN(tmp, bn);
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*ptr = tmp;
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return bn;
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}
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/*
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* Private
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*/
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/*
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* BN_CTX - is used in more difficult math. ops
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* (Why just 1? Because Ruby itself isn't thread safe,
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* we don't need to care about threads)
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*/
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BN_CTX *ossl_bn_ctx;
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static VALUE
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ossl_bn_alloc(VALUE klass)
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{
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BIGNUM *bn;
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VALUE obj = NewBN(klass);
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if (!(bn = BN_new())) {
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ossl_raise(eBNError, NULL);
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}
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SetBN(obj, bn);
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return obj;
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}
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/*
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* call-seq:
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* OpenSSL::BN.new => aBN
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* OpenSSL::BN.new(bn) => aBN
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* OpenSSL::BN.new(integer) => aBN
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* OpenSSL::BN.new(string) => aBN
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* OpenSSL::BN.new(string, 0 | 2 | 10 | 16) => aBN
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*
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* Construct a new OpenSSL BIGNUM object.
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*/
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static VALUE
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ossl_bn_initialize(int argc, VALUE *argv, VALUE self)
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{
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BIGNUM *bn;
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VALUE str, bs;
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int base = 10;
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char *ptr;
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if (rb_scan_args(argc, argv, "11", &str, &bs) == 2) {
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base = NUM2INT(bs);
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}
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if (RB_INTEGER_TYPE_P(str)) {
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GetBN(self, bn);
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integer_to_bnptr(str, bn);
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return self;
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}
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if (RTEST(rb_obj_is_kind_of(str, cBN))) {
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BIGNUM *other;
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GetBN(self, bn);
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GetBN(str, other); /* Safe - we checked kind_of? above */
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if (!BN_copy(bn, other)) {
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ossl_raise(eBNError, NULL);
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}
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return self;
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}
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GetBN(self, bn);
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switch (base) {
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case 0:
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ptr = StringValuePtr(str);
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if (!BN_mpi2bn((unsigned char *)ptr, RSTRING_LENINT(str), bn)) {
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ossl_raise(eBNError, NULL);
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}
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break;
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case 2:
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ptr = StringValuePtr(str);
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if (!BN_bin2bn((unsigned char *)ptr, RSTRING_LENINT(str), bn)) {
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ossl_raise(eBNError, NULL);
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}
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break;
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case 10:
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if (!BN_dec2bn(&bn, StringValueCStr(str))) {
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ossl_raise(eBNError, NULL);
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}
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break;
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case 16:
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if (!BN_hex2bn(&bn, StringValueCStr(str))) {
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ossl_raise(eBNError, NULL);
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}
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break;
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default:
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ossl_raise(rb_eArgError, "invalid radix %d", base);
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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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* bn.to_s => string
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* bn.to_s(base) => string
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*
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* === Parameters
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* * _base_ - Integer
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* Valid values:
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* * 0 - MPI
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* * 2 - binary
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* * 10 - the default
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* * 16 - hex
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*/
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static VALUE
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ossl_bn_to_s(int argc, VALUE *argv, VALUE self)
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{
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BIGNUM *bn;
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VALUE str, bs;
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int base = 10, len;
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char *buf;
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if (rb_scan_args(argc, argv, "01", &bs) == 1) {
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base = NUM2INT(bs);
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}
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GetBN(self, bn);
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switch (base) {
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case 0:
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len = BN_bn2mpi(bn, NULL);
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str = rb_str_new(0, len);
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if (BN_bn2mpi(bn, (unsigned char *)RSTRING_PTR(str)) != len)
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ossl_raise(eBNError, NULL);
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break;
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case 2:
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len = BN_num_bytes(bn);
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str = rb_str_new(0, len);
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if (BN_bn2bin(bn, (unsigned char *)RSTRING_PTR(str)) != len)
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ossl_raise(eBNError, NULL);
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break;
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case 10:
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if (!(buf = BN_bn2dec(bn))) ossl_raise(eBNError, NULL);
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str = ossl_buf2str(buf, rb_long2int(strlen(buf)));
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break;
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case 16:
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if (!(buf = BN_bn2hex(bn))) ossl_raise(eBNError, NULL);
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str = ossl_buf2str(buf, rb_long2int(strlen(buf)));
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break;
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default:
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ossl_raise(rb_eArgError, "invalid radix %d", base);
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}
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return str;
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}
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/*
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* call-seq:
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* bn.to_i => integer
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*/
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static VALUE
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ossl_bn_to_i(VALUE self)
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{
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BIGNUM *bn;
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char *txt;
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VALUE num;
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GetBN(self, bn);
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if (!(txt = BN_bn2hex(bn))) {
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ossl_raise(eBNError, NULL);
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}
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num = rb_cstr_to_inum(txt, 16, Qtrue);
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OPENSSL_free(txt);
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return num;
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}
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static VALUE
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ossl_bn_to_bn(VALUE self)
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{
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return self;
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}
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static VALUE
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ossl_bn_coerce(VALUE self, VALUE other)
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{
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switch(TYPE(other)) {
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case T_STRING:
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self = ossl_bn_to_s(0, NULL, self);
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break;
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case T_FIXNUM:
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case T_BIGNUM:
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self = ossl_bn_to_i(self);
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break;
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default:
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if (!RTEST(rb_obj_is_kind_of(other, cBN))) {
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ossl_raise(rb_eTypeError, "Don't know how to coerce");
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}
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}
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return rb_assoc_new(other, self);
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}
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#define BIGNUM_BOOL1(func) \
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static VALUE \
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ossl_bn_##func(VALUE self) \
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{ \
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BIGNUM *bn; \
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GetBN(self, bn); \
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if (BN_##func(bn)) { \
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return Qtrue; \
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} \
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return Qfalse; \
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}
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/*
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* Document-method: OpenSSL::BN#zero?
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* call-seq:
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* bn.zero? => true | false
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*/
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BIGNUM_BOOL1(is_zero)
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/*
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* Document-method: OpenSSL::BN#one?
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* call-seq:
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* bn.one? => true | false
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*/
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BIGNUM_BOOL1(is_one)
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/*
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* Document-method: OpenSSL::BN#odd?
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* call-seq:
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* bn.odd? => true | false
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*/
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BIGNUM_BOOL1(is_odd)
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/*
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* call-seq:
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* bn.negative? => true | false
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*/
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static VALUE
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ossl_bn_is_negative(VALUE self)
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{
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BIGNUM *bn;
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GetBN(self, bn);
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if (BN_is_zero(bn))
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return Qfalse;
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return BN_is_negative(bn) ? Qtrue : Qfalse;
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}
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#define BIGNUM_1c(func) \
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static VALUE \
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ossl_bn_##func(VALUE self) \
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{ \
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BIGNUM *bn, *result; \
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VALUE obj; \
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GetBN(self, bn); \
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obj = NewBN(rb_obj_class(self)); \
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if (!(result = BN_new())) { \
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ossl_raise(eBNError, NULL); \
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} \
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if (!BN_##func(result, bn, ossl_bn_ctx)) { \
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BN_free(result); \
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ossl_raise(eBNError, NULL); \
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} \
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SetBN(obj, result); \
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return obj; \
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}
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/*
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* Document-method: OpenSSL::BN#sqr
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* call-seq:
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* bn.sqr => aBN
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*/
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BIGNUM_1c(sqr)
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#define BIGNUM_2(func) \
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static VALUE \
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ossl_bn_##func(VALUE self, VALUE other) \
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{ \
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BIGNUM *bn1, *bn2 = GetBNPtr(other), *result; \
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VALUE obj; \
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GetBN(self, bn1); \
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obj = NewBN(rb_obj_class(self)); \
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if (!(result = BN_new())) { \
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ossl_raise(eBNError, NULL); \
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} \
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if (!BN_##func(result, bn1, bn2)) { \
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BN_free(result); \
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ossl_raise(eBNError, NULL); \
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} \
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SetBN(obj, result); \
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return obj; \
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}
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/*
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* Document-method: OpenSSL::BN#+
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* call-seq:
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* bn + bn2 => aBN
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*/
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BIGNUM_2(add)
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/*
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* Document-method: OpenSSL::BN#-
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* call-seq:
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* bn - bn2 => aBN
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*/
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BIGNUM_2(sub)
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#define BIGNUM_2c(func) \
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static VALUE \
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ossl_bn_##func(VALUE self, VALUE other) \
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{ \
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BIGNUM *bn1, *bn2 = GetBNPtr(other), *result; \
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VALUE obj; \
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GetBN(self, bn1); \
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obj = NewBN(rb_obj_class(self)); \
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if (!(result = BN_new())) { \
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ossl_raise(eBNError, NULL); \
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} \
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if (!BN_##func(result, bn1, bn2, ossl_bn_ctx)) { \
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BN_free(result); \
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ossl_raise(eBNError, NULL); \
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} \
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SetBN(obj, result); \
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return obj; \
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}
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/*
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* Document-method: OpenSSL::BN#*
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* call-seq:
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* bn * bn2 => aBN
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*/
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BIGNUM_2c(mul)
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/*
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* Document-method: OpenSSL::BN#%
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* call-seq:
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* bn % bn2 => aBN
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*/
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BIGNUM_2c(mod)
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/*
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* Document-method: OpenSSL::BN#**
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* call-seq:
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* bn ** bn2 => aBN
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*/
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BIGNUM_2c(exp)
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/*
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* Document-method: OpenSSL::BN#gcd
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* call-seq:
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* bn.gcd(bn2) => aBN
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*/
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BIGNUM_2c(gcd)
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/*
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* Document-method: OpenSSL::BN#mod_sqr
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* call-seq:
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* bn.mod_sqr(bn2) => aBN
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*/
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BIGNUM_2c(mod_sqr)
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/*
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* Document-method: OpenSSL::BN#mod_inverse
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* call-seq:
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* bn.mod_inverse(bn2) => aBN
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*/
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BIGNUM_2c(mod_inverse)
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/*
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* call-seq:
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* bn1 / bn2 => [result, remainder]
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*
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* Division of OpenSSL::BN instances
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*/
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static VALUE
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ossl_bn_div(VALUE self, VALUE other)
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{
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BIGNUM *bn1, *bn2 = GetBNPtr(other), *r1, *r2;
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VALUE klass, obj1, obj2;
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GetBN(self, bn1);
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klass = rb_obj_class(self);
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obj1 = NewBN(klass);
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obj2 = NewBN(klass);
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if (!(r1 = BN_new())) {
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ossl_raise(eBNError, NULL);
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}
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if (!(r2 = BN_new())) {
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BN_free(r1);
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ossl_raise(eBNError, NULL);
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}
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if (!BN_div(r1, r2, bn1, bn2, ossl_bn_ctx)) {
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BN_free(r1);
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BN_free(r2);
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ossl_raise(eBNError, NULL);
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}
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SetBN(obj1, r1);
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SetBN(obj2, r2);
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return rb_ary_new3(2, obj1, obj2);
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}
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#define BIGNUM_3c(func) \
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static VALUE \
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ossl_bn_##func(VALUE self, VALUE other1, VALUE other2) \
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{ \
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BIGNUM *bn1, *bn2 = GetBNPtr(other1); \
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BIGNUM *bn3 = GetBNPtr(other2), *result; \
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VALUE obj; \
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GetBN(self, bn1); \
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obj = NewBN(rb_obj_class(self)); \
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if (!(result = BN_new())) { \
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ossl_raise(eBNError, NULL); \
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} \
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if (!BN_##func(result, bn1, bn2, bn3, ossl_bn_ctx)) { \
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BN_free(result); \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
SetBN(obj, result); \
|
|
return obj; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#mod_add
|
|
* call-seq:
|
|
* bn.mod_add(bn1, bn2) -> aBN
|
|
*/
|
|
BIGNUM_3c(mod_add)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#mod_sub
|
|
* call-seq:
|
|
* bn.mod_sub(bn1, bn2) -> aBN
|
|
*/
|
|
BIGNUM_3c(mod_sub)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#mod_mul
|
|
* call-seq:
|
|
* bn.mod_mul(bn1, bn2) -> aBN
|
|
*/
|
|
BIGNUM_3c(mod_mul)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#mod_exp
|
|
* call-seq:
|
|
* bn.mod_exp(bn1, bn2) -> aBN
|
|
*/
|
|
BIGNUM_3c(mod_exp)
|
|
|
|
#define BIGNUM_BIT(func) \
|
|
static VALUE \
|
|
ossl_bn_##func(VALUE self, VALUE bit) \
|
|
{ \
|
|
BIGNUM *bn; \
|
|
GetBN(self, bn); \
|
|
if (!BN_##func(bn, NUM2INT(bit))) { \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
return self; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#set_bit!
|
|
* call-seq:
|
|
* bn.set_bit!(bit) -> self
|
|
*/
|
|
BIGNUM_BIT(set_bit)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#clear_bit!
|
|
* call-seq:
|
|
* bn.clear_bit!(bit) -> self
|
|
*/
|
|
BIGNUM_BIT(clear_bit)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#mask_bit!
|
|
* call-seq:
|
|
* bn.mask_bit!(bit) -> self
|
|
*/
|
|
BIGNUM_BIT(mask_bits)
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn.bit_set?(bit) => true | false
|
|
*
|
|
* Tests bit _bit_ in _bn_ and returns +true+ if set, +false+ if not set.
|
|
*/
|
|
static VALUE
|
|
ossl_bn_is_bit_set(VALUE self, VALUE bit)
|
|
{
|
|
int b;
|
|
BIGNUM *bn;
|
|
|
|
b = NUM2INT(bit);
|
|
GetBN(self, bn);
|
|
if (BN_is_bit_set(bn, b)) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
#define BIGNUM_SHIFT(func) \
|
|
static VALUE \
|
|
ossl_bn_##func(VALUE self, VALUE bits) \
|
|
{ \
|
|
BIGNUM *bn, *result; \
|
|
int b; \
|
|
VALUE obj; \
|
|
b = NUM2INT(bits); \
|
|
GetBN(self, bn); \
|
|
obj = NewBN(rb_obj_class(self)); \
|
|
if (!(result = BN_new())) { \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
if (!BN_##func(result, bn, b)) { \
|
|
BN_free(result); \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
SetBN(obj, result); \
|
|
return obj; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#<<
|
|
* call-seq:
|
|
* bn << bits -> aBN
|
|
*/
|
|
BIGNUM_SHIFT(lshift)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#>>
|
|
* call-seq:
|
|
* bn >> bits -> aBN
|
|
*/
|
|
BIGNUM_SHIFT(rshift)
|
|
|
|
#define BIGNUM_SELF_SHIFT(func) \
|
|
static VALUE \
|
|
ossl_bn_self_##func(VALUE self, VALUE bits) \
|
|
{ \
|
|
BIGNUM *bn; \
|
|
int b; \
|
|
b = NUM2INT(bits); \
|
|
GetBN(self, bn); \
|
|
if (!BN_##func(bn, bn, b)) \
|
|
ossl_raise(eBNError, NULL); \
|
|
return self; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#lshift!
|
|
* call-seq:
|
|
* bn.lshift!(bits) -> self
|
|
*/
|
|
BIGNUM_SELF_SHIFT(lshift)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#rshift!
|
|
* call-seq:
|
|
* bn.rshift!(bits) -> self
|
|
*/
|
|
BIGNUM_SELF_SHIFT(rshift)
|
|
|
|
#define BIGNUM_RAND(func) \
|
|
static VALUE \
|
|
ossl_bn_s_##func(int argc, VALUE *argv, VALUE klass) \
|
|
{ \
|
|
BIGNUM *result; \
|
|
int bottom = 0, top = 0, b; \
|
|
VALUE bits, fill, odd, obj; \
|
|
\
|
|
switch (rb_scan_args(argc, argv, "12", &bits, &fill, &odd)) { \
|
|
case 3: \
|
|
bottom = (odd == Qtrue) ? 1 : 0; \
|
|
/* FALLTHROUGH */ \
|
|
case 2: \
|
|
top = NUM2INT(fill); \
|
|
} \
|
|
b = NUM2INT(bits); \
|
|
obj = NewBN(klass); \
|
|
if (!(result = BN_new())) { \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
if (!BN_##func(result, b, top, bottom)) { \
|
|
BN_free(result); \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
SetBN(obj, result); \
|
|
return obj; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN.rand
|
|
* BN.rand(bits [, fill [, odd]]) -> aBN
|
|
*/
|
|
BIGNUM_RAND(rand)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN.pseudo_rand
|
|
* BN.pseudo_rand(bits [, fill [, odd]]) -> aBN
|
|
*/
|
|
BIGNUM_RAND(pseudo_rand)
|
|
|
|
#define BIGNUM_RAND_RANGE(func) \
|
|
static VALUE \
|
|
ossl_bn_s_##func##_range(VALUE klass, VALUE range) \
|
|
{ \
|
|
BIGNUM *bn = GetBNPtr(range), *result; \
|
|
VALUE obj = NewBN(klass); \
|
|
if (!(result = BN_new())) { \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
if (!BN_##func##_range(result, bn)) { \
|
|
BN_free(result); \
|
|
ossl_raise(eBNError, NULL); \
|
|
} \
|
|
SetBN(obj, result); \
|
|
return obj; \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN.rand_range
|
|
* call-seq:
|
|
* BN.rand_range(range) -> aBN
|
|
*
|
|
*/
|
|
BIGNUM_RAND_RANGE(rand)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN.pseudo_rand_range
|
|
* call-seq:
|
|
* BN.pseudo_rand_range(range) -> aBN
|
|
*
|
|
*/
|
|
BIGNUM_RAND_RANGE(pseudo_rand)
|
|
|
|
/*
|
|
* call-seq:
|
|
* BN.generate_prime(bits, [, safe [, add [, rem]]]) => bn
|
|
*
|
|
* Generates a random prime number of bit length _bits_. If _safe_ is set to
|
|
* +true+, generates a safe prime. If _add_ is specified, generates a prime that
|
|
* fulfills condition <tt>p % add = rem</tt>.
|
|
*
|
|
* === Parameters
|
|
* * _bits_ - integer
|
|
* * _safe_ - boolean
|
|
* * _add_ - BN
|
|
* * _rem_ - BN
|
|
*/
|
|
static VALUE
|
|
ossl_bn_s_generate_prime(int argc, VALUE *argv, VALUE klass)
|
|
{
|
|
BIGNUM *add = NULL, *rem = NULL, *result;
|
|
int safe = 1, num;
|
|
VALUE vnum, vsafe, vadd, vrem, obj;
|
|
|
|
rb_scan_args(argc, argv, "13", &vnum, &vsafe, &vadd, &vrem);
|
|
|
|
num = NUM2INT(vnum);
|
|
|
|
if (vsafe == Qfalse) {
|
|
safe = 0;
|
|
}
|
|
if (!NIL_P(vadd)) {
|
|
add = GetBNPtr(vadd);
|
|
rem = NIL_P(vrem) ? NULL : GetBNPtr(vrem);
|
|
}
|
|
obj = NewBN(klass);
|
|
if (!(result = BN_new())) {
|
|
ossl_raise(eBNError, NULL);
|
|
}
|
|
if (!BN_generate_prime_ex(result, num, safe, add, rem, NULL)) {
|
|
BN_free(result);
|
|
ossl_raise(eBNError, NULL);
|
|
}
|
|
SetBN(obj, result);
|
|
|
|
return obj;
|
|
}
|
|
|
|
#define BIGNUM_NUM(func) \
|
|
static VALUE \
|
|
ossl_bn_##func(VALUE self) \
|
|
{ \
|
|
BIGNUM *bn; \
|
|
GetBN(self, bn); \
|
|
return INT2NUM(BN_##func(bn)); \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#num_bytes
|
|
* call-seq:
|
|
* bn.num_bytes => integer
|
|
*/
|
|
BIGNUM_NUM(num_bytes)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#num_bits
|
|
* call-seq:
|
|
* bn.num_bits => integer
|
|
*/
|
|
BIGNUM_NUM(num_bits)
|
|
|
|
static VALUE
|
|
ossl_bn_copy(VALUE self, VALUE other)
|
|
{
|
|
BIGNUM *bn1, *bn2;
|
|
|
|
rb_check_frozen(self);
|
|
|
|
if (self == other) return self;
|
|
|
|
GetBN(self, bn1);
|
|
bn2 = GetBNPtr(other);
|
|
|
|
if (!BN_copy(bn1, bn2)) {
|
|
ossl_raise(eBNError, NULL);
|
|
}
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* +bn -> aBN
|
|
*/
|
|
static VALUE
|
|
ossl_bn_uplus(VALUE self)
|
|
{
|
|
return self;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* -bn -> aBN
|
|
*/
|
|
static VALUE
|
|
ossl_bn_uminus(VALUE self)
|
|
{
|
|
VALUE obj;
|
|
BIGNUM *bn1, *bn2;
|
|
|
|
GetBN(self, bn1);
|
|
obj = NewBN(cBN);
|
|
bn2 = BN_dup(bn1);
|
|
if (!bn2)
|
|
ossl_raise(eBNError, "BN_dup");
|
|
SetBN(obj, bn2);
|
|
BN_set_negative(bn2, !BN_is_negative(bn2));
|
|
|
|
return obj;
|
|
}
|
|
|
|
#define BIGNUM_CMP(func) \
|
|
static VALUE \
|
|
ossl_bn_##func(VALUE self, VALUE other) \
|
|
{ \
|
|
BIGNUM *bn1, *bn2 = GetBNPtr(other); \
|
|
GetBN(self, bn1); \
|
|
return INT2NUM(BN_##func(bn1, bn2)); \
|
|
}
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#cmp
|
|
* call-seq:
|
|
* bn.cmp(bn2) => integer
|
|
*/
|
|
/*
|
|
* Document-method: OpenSSL::BN#<=>
|
|
* call-seq:
|
|
* bn <=> bn2 => integer
|
|
*/
|
|
BIGNUM_CMP(cmp)
|
|
|
|
/*
|
|
* Document-method: OpenSSL::BN#ucmp
|
|
* call-seq:
|
|
* bn.ucmp(bn2) => integer
|
|
*/
|
|
BIGNUM_CMP(ucmp)
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn == obj => true or false
|
|
*
|
|
* Returns +true+ only if _obj_ has the same value as _bn_. Contrast this
|
|
* with OpenSSL::BN#eql?, which requires obj to be OpenSSL::BN.
|
|
*/
|
|
static VALUE
|
|
ossl_bn_eq(VALUE self, VALUE other)
|
|
{
|
|
BIGNUM *bn1, *bn2;
|
|
|
|
GetBN(self, bn1);
|
|
other = try_convert_to_bn(other);
|
|
if (NIL_P(other))
|
|
return Qfalse;
|
|
GetBN(other, bn2);
|
|
|
|
if (!BN_cmp(bn1, bn2)) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn.eql?(obj) => true or false
|
|
*
|
|
* Returns <code>true</code> only if <i>obj</i> is a
|
|
* <code>OpenSSL::BN</code> with the same value as <i>bn</i>. Contrast this
|
|
* with OpenSSL::BN#==, which performs type conversions.
|
|
*/
|
|
static VALUE
|
|
ossl_bn_eql(VALUE self, VALUE other)
|
|
{
|
|
BIGNUM *bn1, *bn2;
|
|
|
|
if (!rb_obj_is_kind_of(other, cBN))
|
|
return Qfalse;
|
|
GetBN(self, bn1);
|
|
GetBN(other, bn2);
|
|
|
|
return BN_cmp(bn1, bn2) ? Qfalse : Qtrue;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn.hash => Integer
|
|
*
|
|
* Returns a hash code for this object.
|
|
*
|
|
* See also Object#hash.
|
|
*/
|
|
static VALUE
|
|
ossl_bn_hash(VALUE self)
|
|
{
|
|
BIGNUM *bn;
|
|
VALUE tmp, hash;
|
|
unsigned char *buf;
|
|
int len;
|
|
|
|
GetBN(self, bn);
|
|
len = BN_num_bytes(bn);
|
|
buf = ALLOCV(tmp, len);
|
|
if (BN_bn2bin(bn, buf) != len) {
|
|
ALLOCV_END(tmp);
|
|
ossl_raise(eBNError, "BN_bn2bin");
|
|
}
|
|
|
|
hash = ST2FIX(rb_memhash(buf, len));
|
|
ALLOCV_END(tmp);
|
|
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn.prime? => true | false
|
|
* bn.prime?(checks) => true | false
|
|
*
|
|
* Performs a Miller-Rabin probabilistic primality test with _checks_
|
|
* iterations. If _checks_ is not specified, a number of iterations is used
|
|
* that yields a false positive rate of at most 2^-80 for random input.
|
|
*
|
|
* === Parameters
|
|
* * _checks_ - integer
|
|
*/
|
|
static VALUE
|
|
ossl_bn_is_prime(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
BIGNUM *bn;
|
|
VALUE vchecks;
|
|
int checks = BN_prime_checks;
|
|
|
|
if (rb_scan_args(argc, argv, "01", &vchecks) == 1) {
|
|
checks = NUM2INT(vchecks);
|
|
}
|
|
GetBN(self, bn);
|
|
switch (BN_is_prime_ex(bn, checks, ossl_bn_ctx, NULL)) {
|
|
case 1:
|
|
return Qtrue;
|
|
case 0:
|
|
return Qfalse;
|
|
default:
|
|
ossl_raise(eBNError, NULL);
|
|
}
|
|
/* not reachable */
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* bn.prime_fasttest? => true | false
|
|
* bn.prime_fasttest?(checks) => true | false
|
|
* bn.prime_fasttest?(checks, trial_div) => true | false
|
|
*
|
|
* Performs a Miller-Rabin primality test. This is same as #prime? except this
|
|
* first attempts trial divisions with some small primes.
|
|
*
|
|
* === Parameters
|
|
* * _checks_ - integer
|
|
* * _trial_div_ - boolean
|
|
*/
|
|
static VALUE
|
|
ossl_bn_is_prime_fasttest(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
BIGNUM *bn;
|
|
VALUE vchecks, vtrivdiv;
|
|
int checks = BN_prime_checks, do_trial_division = 1;
|
|
|
|
rb_scan_args(argc, argv, "02", &vchecks, &vtrivdiv);
|
|
|
|
if (!NIL_P(vchecks)) {
|
|
checks = NUM2INT(vchecks);
|
|
}
|
|
GetBN(self, bn);
|
|
/* handle true/false */
|
|
if (vtrivdiv == Qfalse) {
|
|
do_trial_division = 0;
|
|
}
|
|
switch (BN_is_prime_fasttest_ex(bn, checks, ossl_bn_ctx, do_trial_division, NULL)) {
|
|
case 1:
|
|
return Qtrue;
|
|
case 0:
|
|
return Qfalse;
|
|
default:
|
|
ossl_raise(eBNError, NULL);
|
|
}
|
|
/* not reachable */
|
|
return Qnil;
|
|
}
|
|
|
|
/*
|
|
* INIT
|
|
* (NOTE: ordering of methods is the same as in 'man bn')
|
|
*/
|
|
void
|
|
Init_ossl_bn(void)
|
|
{
|
|
#if 0
|
|
mOSSL = rb_define_module("OpenSSL");
|
|
eOSSLError = rb_define_class_under(mOSSL, "OpenSSLError", rb_eStandardError);
|
|
#endif
|
|
|
|
if (!(ossl_bn_ctx = BN_CTX_new())) {
|
|
ossl_raise(rb_eRuntimeError, "Cannot init BN_CTX");
|
|
}
|
|
|
|
eBNError = rb_define_class_under(mOSSL, "BNError", eOSSLError);
|
|
|
|
cBN = rb_define_class_under(mOSSL, "BN", rb_cObject);
|
|
|
|
rb_define_alloc_func(cBN, ossl_bn_alloc);
|
|
rb_define_method(cBN, "initialize", ossl_bn_initialize, -1);
|
|
|
|
rb_define_method(cBN, "initialize_copy", ossl_bn_copy, 1);
|
|
rb_define_method(cBN, "copy", ossl_bn_copy, 1);
|
|
|
|
/* swap (=coerce?) */
|
|
|
|
rb_define_method(cBN, "num_bytes", ossl_bn_num_bytes, 0);
|
|
rb_define_method(cBN, "num_bits", ossl_bn_num_bits, 0);
|
|
/* num_bits_word */
|
|
|
|
rb_define_method(cBN, "+@", ossl_bn_uplus, 0);
|
|
rb_define_method(cBN, "-@", ossl_bn_uminus, 0);
|
|
|
|
rb_define_method(cBN, "+", ossl_bn_add, 1);
|
|
rb_define_method(cBN, "-", ossl_bn_sub, 1);
|
|
rb_define_method(cBN, "*", ossl_bn_mul, 1);
|
|
rb_define_method(cBN, "sqr", ossl_bn_sqr, 0);
|
|
rb_define_method(cBN, "/", ossl_bn_div, 1);
|
|
rb_define_method(cBN, "%", ossl_bn_mod, 1);
|
|
/* nnmod */
|
|
|
|
rb_define_method(cBN, "mod_add", ossl_bn_mod_add, 2);
|
|
rb_define_method(cBN, "mod_sub", ossl_bn_mod_sub, 2);
|
|
rb_define_method(cBN, "mod_mul", ossl_bn_mod_mul, 2);
|
|
rb_define_method(cBN, "mod_sqr", ossl_bn_mod_sqr, 1);
|
|
rb_define_method(cBN, "**", ossl_bn_exp, 1);
|
|
rb_define_method(cBN, "mod_exp", ossl_bn_mod_exp, 2);
|
|
rb_define_method(cBN, "gcd", ossl_bn_gcd, 1);
|
|
|
|
/* add_word
|
|
* sub_word
|
|
* mul_word
|
|
* div_word
|
|
* mod_word */
|
|
|
|
rb_define_method(cBN, "cmp", ossl_bn_cmp, 1);
|
|
rb_define_alias(cBN, "<=>", "cmp");
|
|
rb_define_method(cBN, "ucmp", ossl_bn_ucmp, 1);
|
|
rb_define_method(cBN, "eql?", ossl_bn_eql, 1);
|
|
rb_define_method(cBN, "hash", ossl_bn_hash, 0);
|
|
rb_define_method(cBN, "==", ossl_bn_eq, 1);
|
|
rb_define_alias(cBN, "===", "==");
|
|
rb_define_method(cBN, "zero?", ossl_bn_is_zero, 0);
|
|
rb_define_method(cBN, "one?", ossl_bn_is_one, 0);
|
|
/* is_word */
|
|
rb_define_method(cBN, "odd?", ossl_bn_is_odd, 0);
|
|
rb_define_method(cBN, "negative?", ossl_bn_is_negative, 0);
|
|
|
|
/* zero
|
|
* one
|
|
* value_one - DON'T IMPL.
|
|
* set_word
|
|
* get_word */
|
|
|
|
rb_define_singleton_method(cBN, "rand", ossl_bn_s_rand, -1);
|
|
rb_define_singleton_method(cBN, "pseudo_rand", ossl_bn_s_pseudo_rand, -1);
|
|
rb_define_singleton_method(cBN, "rand_range", ossl_bn_s_rand_range, 1);
|
|
rb_define_singleton_method(cBN, "pseudo_rand_range", ossl_bn_s_pseudo_rand_range, 1);
|
|
|
|
rb_define_singleton_method(cBN, "generate_prime", ossl_bn_s_generate_prime, -1);
|
|
rb_define_method(cBN, "prime?", ossl_bn_is_prime, -1);
|
|
rb_define_method(cBN, "prime_fasttest?", ossl_bn_is_prime_fasttest, -1);
|
|
|
|
rb_define_method(cBN, "set_bit!", ossl_bn_set_bit, 1);
|
|
rb_define_method(cBN, "clear_bit!", ossl_bn_clear_bit, 1);
|
|
rb_define_method(cBN, "bit_set?", ossl_bn_is_bit_set, 1);
|
|
rb_define_method(cBN, "mask_bits!", ossl_bn_mask_bits, 1);
|
|
rb_define_method(cBN, "<<", ossl_bn_lshift, 1);
|
|
rb_define_method(cBN, ">>", ossl_bn_rshift, 1);
|
|
rb_define_method(cBN, "lshift!", ossl_bn_self_lshift, 1);
|
|
rb_define_method(cBN, "rshift!", ossl_bn_self_rshift, 1);
|
|
/* lshift1 - DON'T IMPL. */
|
|
/* rshift1 - DON'T IMPL. */
|
|
|
|
/*
|
|
* bn2bin
|
|
* bin2bn
|
|
* bn2hex
|
|
* bn2dec
|
|
* hex2bn
|
|
* dec2bn - all these are implemented in ossl_bn_initialize, and ossl_bn_to_s
|
|
* print - NOT IMPL.
|
|
* print_fp - NOT IMPL.
|
|
* bn2mpi
|
|
* mpi2bn
|
|
*/
|
|
rb_define_method(cBN, "to_s", ossl_bn_to_s, -1);
|
|
rb_define_method(cBN, "to_i", ossl_bn_to_i, 0);
|
|
rb_define_alias(cBN, "to_int", "to_i");
|
|
rb_define_method(cBN, "to_bn", ossl_bn_to_bn, 0);
|
|
rb_define_method(cBN, "coerce", ossl_bn_coerce, 1);
|
|
|
|
/*
|
|
* TODO:
|
|
* But how to: from_bin, from_mpi? PACK?
|
|
* to_bin
|
|
* to_mpi
|
|
*/
|
|
|
|
rb_define_method(cBN, "mod_inverse", ossl_bn_mod_inverse, 1);
|
|
|
|
/* RECiProcal
|
|
* MONTgomery */
|
|
}
|