Ruby 2.4参考手册
OpenSSL
OpenSSL::BN
父类:ObjectIncluded 模块:可比较
公共类方法
generate_prime(bits,[,safe [,add,rem]])→bn 显示源代码
生成一个随机的素数位长度bits
。如果safe
属实,则生成安全素数。如果add
指定,则生成满足条件的素数p % add = rem
。
参数
-
bits
- 整数
-
safe
- 布尔值
-
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;
}
OpenSSL :: BN.new→aBN 显示源文件
OpenSSL::BN.new(bn) → aBN
OpenSSL::BN.new(integer) → aBN
OpenSSL::BN.new(string) → aBN
OpenSSL::BN.new(string, 0 | 2 | 10 | 16) → aBN
构建一个新的 OpenSSL BigNum 对象。
static VALUE
ossl_bn_initialize(int argc, VALUE *argv, VALUE self)
{
BIGNUM *bn;
VALUE str, bs;
int base = 10;
if (rb_scan_args(argc, argv, "11", &str, &bs) == 2) {
base = NUM2INT(bs);
}
if (RB_INTEGER_TYPE_P(str)) {
GetBN(self, bn);
integer_to_bnptr(str, bn);
return self;
}
if (RTEST(rb_obj_is_kind_of(str, cBN))) {
BIGNUM *other;
GetBN(self, bn);
GetBN(str, other); /* Safe - we checked kind_of? above */
if (!BN_copy(bn, other)) {
ossl_raise(eBNError, NULL);
}
return self;
}
GetBN(self, bn);
switch (base) {
case 0:
if (!BN_mpi2bn((unsigned char *)StringValuePtr(str), RSTRING_LENINT(str), bn)) {
ossl_raise(eBNError, NULL);
}
break;
case 2:
if (!BN_bin2bn((unsigned char *)StringValuePtr(str), RSTRING_LENINT(str), bn)) {
ossl_raise(eBNError, NULL);
}
break;
case 10:
if (!BN_dec2bn(&bn, StringValueCStr(str))) {
ossl_raise(eBNError, NULL);
}
break;
case 16:
if (!BN_hex2bn(&bn, StringValueCStr(str))) {
ossl_raise(eBNError, NULL);
}
break;
default:
ossl_raise(rb_eArgError, "invalid radix %d", base);
}
return self;
}
公共实例方法
bn % bn2 → aBN
bn * bn2 → aBN
bn ** bn2 → aBN
bn + bn2 → aBN
bn - bn2 → aBN
bn1 / bn2→ result, remainder() (结果,余数())
OpenSSL :: BN 实例的划分
static VALUE
ossl_bn_div(VALUE self, VALUE other)
{
BIGNUM *bn1, *bn2 = GetBNPtr(other), *r1, *r2;
VALUE klass, obj1, obj2;
GetBN(self, bn1);
klass = rb_obj_class(self);
obj1 = NewBN(klass);
obj2 = NewBN(klass);
if (!(r1 = BN_new())) {
ossl_raise(eBNError, NULL);
}
if (!(r2 = BN_new())) {
BN_free(r1);
ossl_raise(eBNError, NULL);
}
if (!BN_div(r1, r2, bn1, bn2, ossl_bn_ctx)) {
BN_free(r1);
BN_free(r2);
ossl_raise(eBNError, NULL);
}
SetBN(obj1, r1);
SetBN(obj2, r2);
return rb_ary_new3(2, obj1, obj2);
}
bn << bits → aBN
<=>(p1)
Alias for: cmp
bn == obj→true 或 false 显示来源
仅当obj
具有bn
相同的值时返回true
。与#eql?对比,这需要 obj 为 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;
}
另外别名为:===
===(p1)
别名为:==
bn >> bits → aBN
bit_set?(bit)→true | 假显示源
返回是否bit
设置的布尔值。对于 openssl BIGNUMs 的按位操作。
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;
}
clear_bit!(bit) → self
cmp(bn2)→整数
另外别名为:<=>
coerce(p1)显示源
static VALUE
ossl_bn_coerce(VALUE self, VALUE other)
{
switch(TYPE(other)) {
case T_STRING:
self = ossl_bn_to_s(0, NULL, self);
break;
case T_FIXNUM:
case T_BIGNUM:
self = ossl_bn_to_i(self);
break;
default:
if (!RTEST(rb_obj_is_kind_of(other, cBN))) {
ossl_raise(rb_eTypeError, "Don't know how to coerce");
}
}
return rb_assoc_new(other, self);
}
copy(p1) 显示源文件
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;
}
eql?(obj)→true 或 false 显示源文件
仅当 obj 是一个OpenSSL::BN
与 big 相同的值时才返回true
。将其与OpenSSL :: BN#==进行对比,后者执行类型转换。
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;
}
gcd(bn2) → aBN
hash(散列)→整数显示源文件
返回此对象的哈希码。
另见对象#散列。
static VALUE
ossl_bn_hash(VALUE self)
{
BIGNUM *bn;
VALUE hash;
unsigned char *buf;
int len;
GetBN(self, bn);
len = BN_num_bytes(bn);
buf = xmalloc(len);
if (BN_bn2bin(bn, buf) != len) {
xfree(buf);
ossl_raise(eBNError, NULL);
}
hash = INT2FIX(rb_memhash(buf, len));
xfree(buf);
return hash;
}
lshift!(bits) → self
mod_add(bn1, bn2) → aBN
mod_exp(bn1, bn2) → aBN
mod_inverse(bn2) → aBN
mod_mul(bn1, bn2) → aBN
mod_sqr(bn2) → aBN
mod_sub(bn1, bn2) → aBN
num_bits → integer
num_bytes → integer
odd? → true | false
one? → true | false
pretty_print(q)显示源文件
# File ext/openssl/lib/openssl/bn.rb, line 19
def pretty_print(q)
q.object_group(self) {
q.text ' '
q.text to_i.to_s
}
end
prime?( 主要?)→true | false 显示源
prime?(checks) → true | false
用checks
迭代执行 Miller-Rabin 概率素性测试。如果nchecks
未指定,则使用多次迭代,对于随机输入产生至多2 ^ -80的误报率。
参数
-
checks
- 整数值VALUE ossl_bn_is_prime(int argc,VALUE * argv,VALUE self){BIGNUM * bn; VALUE vchecks; int checks = BN_prime_checks; 如果(rb_scan_args(argc,argv,“01”,&vchecks)== 1){checks = NUM2INT(vchecks); } GetBN(self,bn); 开关(BN_is_prime_ex(bn,checks,ossl_bn_ctx,NULL)){case 1:return Qtrue; 情况0:返回Qfalse; 默认:ossl_raise(eBNError,NULL); } / *不可达* / return Qnil; } prime_fasttest?→true | false显示源prime_fasttest?(检查)→true | false prime_fasttest?(checks,trial_div)→true | false执行Miller-Rabin素性测试。这和素数一样吗?除了这第一次试图与一些小素数审判师。参数
-
checks
- integer
-
trial_div
- booleanstatic 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; } rshift!(bits) → self set_bit!(bit) → self sqr → aBN to_bn() Show source static VALUE ossl_bn_to_bn(VALUE self) { return self; } to_i → integer Show source static VALUE ossl_bn_to_i(VALUE self) { BIGNUM *bn; char *txt; VALUE num; GetBN(self, bn); if (!(txt = BN_bn2hex(bn))) { ossl_raise(eBNError, NULL); } num = rb_cstr_to_inum(txt, 16, Qtrue); OPENSSL_free(txt); return num; } Also aliased as: to_int to_int() Alias for: to_i to_s → string Show source to_s(base) → string Parameters
-
base
- 整数有效值:
- 0 - MPI
- 2 - binary
- 10 - the default
- 16 - hex
static VALUE
ossl_bn_to_s(int argc, VALUE *argv, VALUE self)
{
BIGNUM *bn;
VALUE str, bs;
int base = 10, len;
char *buf;
if (rb_scan_args(argc, argv, "01", &bs) == 1) {
base = NUM2INT(bs);
}
GetBN(self, bn);
switch (base) {
case 0:
len = BN_bn2mpi(bn, NULL);
str = rb_str_new(0, len);
if (BN_bn2mpi(bn, (unsigned char *)RSTRING_PTR(str)) != len)
ossl_raise(eBNError, NULL);
break;
case 2:
len = BN_num_bytes(bn);
str = rb_str_new(0, len);
if (BN_bn2bin(bn, (unsigned char *)RSTRING_PTR(str)) != len)
ossl_raise(eBNError, NULL);
break;
case 10:
if (!(buf = BN_bn2dec(bn))) ossl_raise(eBNError, NULL);
str = ossl_buf2str(buf, rb_long2int(strlen(buf)));
break;
case 16:
if (!(buf = BN_bn2hex(bn))) ossl_raise(eBNError, NULL);
str = ossl_buf2str(buf, rb_long2int(strlen(buf)));
break;
default:
ossl_raise(rb_eArgError, "invalid radix %d", base);
}
return str;
}
ucmp(bn2) → integer
zero? → true | false
OpenSSL相关
Ruby 是一种面向对象、命令式、函数式、动态的通用编程语言,是世界上最优美而巧妙的语言。
主页 | https://www.ruby-lang.org/ |
源码 | https://github.com/ruby/ruby |
版本 | 2.4 |
发布版本 | 2.4.1 |