Class: OpenSSL::BN
- Inherits:
-
Object
- Object
- OpenSSL::BN
- Includes:
- Comparable
- Defined in:
- lib/openssl/bn.rb,
ossl_bn.c
Class Method Summary collapse
- .generate_prime ⇒ Object
- .pseudo_rand ⇒ Object
- .pseudo_rand_range ⇒ Object
-
.rand ⇒ Object
zero one value_one - DON’T IMPL.
- .rand_range ⇒ Object
Instance Method Summary collapse
- #% ⇒ Object
- #* ⇒ Object
- #** ⇒ Object
-
#+ ⇒ Object
num_bits_word.
- #- ⇒ Object
- #/ ⇒ Object
- #<< ⇒ Object
- #>> ⇒ Object
- #bit_set? ⇒ Boolean
- #clear_bit! ⇒ Object
-
#cmp ⇒ Object
(also: #<=>)
add_word sub_word mul_word div_word mod_word.
- #coerce ⇒ Object
- #copy ⇒ Object
- #eql? ⇒ Boolean (also: #==, #===)
- #gcd ⇒ Object
- #initialize ⇒ Object constructor
- #lshift! ⇒ Object
- #mask_bits! ⇒ Object
-
#mod_add ⇒ Object
nnmod.
- #mod_exp ⇒ Object
-
#mod_inverse ⇒ Object
TODO: But how to: from_bin, from_mpi? PACK? to_bin to_mpi.
- #mod_mul ⇒ Object
- #mod_sqr ⇒ Object
- #mod_sub ⇒ Object
- #num_bits ⇒ Object
-
#num_bytes ⇒ Object
swap (=coerce?).
-
#odd? ⇒ Boolean
is_word.
- #one? ⇒ Boolean
-
#prime? ⇒ Boolean
Parameters *
checks
- integer. -
#prime_fasttest? ⇒ Boolean
Parameters *
checks
- integer *trial_div
- boolean. - #rshift! ⇒ Object
- #set_bit! ⇒ Object
- #sqr ⇒ Object
- #to_bn ⇒ Object
- #to_i ⇒ Integer (also: #to_int)
-
#to_s ⇒ Object
Parameters *
base
- integer * * Valid values: * * * 0 - MPI * * * 2 - binary * * * 10 - the default * * * 16 - hex. - #ucmp ⇒ Object
- #zero? ⇒ Boolean
Constructor Details
#new ⇒ Object #new(bn) ⇒ Object #new(integer) ⇒ Object #new(string) ⇒ Object #new(string, 0|2|10|16) ⇒ Object
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# File 'ossl_bn.c', line 113
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_TYPE_P(str, T_FIXNUM)) {
long i;
unsigned char bin[sizeof(long)];
long n = FIX2LONG(str);
unsigned long un = labs(n);
for (i = sizeof(long) - 1; 0 <= i; i--) {
bin[i] = un&0xff;
un >>= 8;
}
GetBN(self, bn);
if (!BN_bin2bn(bin, sizeof(bin), bn)) {
ossl_raise(eBNError, NULL);
}
if (n < 0) BN_set_negative(bn, 1);
return self;
}
else if (RB_TYPE_P(str, T_BIGNUM)) {
int i, j, len = RBIGNUM_LENINT(str);
BDIGIT *ds = RBIGNUM_DIGITS(str);
VALUE buf;
unsigned char *bin = (unsigned char*)ALLOCV_N(BDIGIT, buf, len);
for (i = 0; len > i; i++) {
BDIGIT v = ds[i];
for (j = SIZEOF_BDIGITS - 1; 0 <= j; j--) {
bin[(len-1-i)*SIZEOF_BDIGITS+j] = v&0xff;
v >>= 8;
}
}
GetBN(self, bn);
if (!BN_bin2bn(bin, (int)SIZEOF_BDIGITS*len, bn)) {
ALLOCV_END(buf);
ossl_raise(eBNError, NULL);
}
ALLOCV_END(buf);
if (!RBIGNUM_SIGN(str)) BN_set_negative(bn, 1);
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;
}
StringValue(str);
GetBN(self, bn);
switch (base) {
case 0:
if (!BN_mpi2bn((unsigned char *)RSTRING_PTR(str), RSTRING_LENINT(str), bn)) {
ossl_raise(eBNError, NULL);
}
break;
case 2:
if (!BN_bin2bn((unsigned char *)RSTRING_PTR(str), RSTRING_LENINT(str), bn)) {
ossl_raise(eBNError, NULL);
}
break;
case 10:
if (!BN_dec2bn(&bn, RSTRING_PTR(str))) {
ossl_raise(eBNError, NULL);
}
break;
case 16:
if (!BN_hex2bn(&bn, RSTRING_PTR(str))) {
ossl_raise(eBNError, NULL);
}
break;
default:
ossl_raise(rb_eArgError, "invalid radix %d", base);
}
return self;
}
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Class Method Details
.generate_prime ⇒ Object
.pseudo_rand ⇒ Object
.pseudo_rand_range ⇒ Object
.rand ⇒ Object
zero one value_one - DON’T IMPL. set_word get_word
.rand_range ⇒ Object
Instance Method Details
#% ⇒ Object
#* ⇒ Object
#** ⇒ Object
#+ ⇒ Object
num_bits_word
#- ⇒ Object
#/ ⇒ Object
#<< ⇒ Object
#>> ⇒ Object
#bit_set? ⇒ Boolean
#clear_bit! ⇒ Object
#cmp ⇒ Object Also known as: <=>
add_word sub_word mul_word div_word mod_word
#coerce ⇒ Object
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# File 'ossl_bn.c', line 286
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);
}
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#copy ⇒ Object
#eql? ⇒ Boolean Also known as: ==, ===
#gcd ⇒ Object
#lshift! ⇒ Object
#mask_bits! ⇒ Object
#mod_add ⇒ Object
nnmod
#mod_exp ⇒ Object
#mod_inverse ⇒ Object
TODO: But how to: from_bin, from_mpi? PACK? to_bin to_mpi
#mod_mul ⇒ Object
#mod_sqr ⇒ Object
#mod_sub ⇒ Object
#num_bits ⇒ Object
#num_bytes ⇒ Object
swap (=coerce?)
#odd? ⇒ Boolean
is_word
#one? ⇒ Boolean
#prime? ⇒ Boolean #prime?(checks) ⇒ Boolean
Parameters
-
checks
- integer
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# File 'ossl_bn.c', line 711
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(bn, checks, NULL, ossl_bn_ctx, NULL)) {
case 1:
return Qtrue;
case 0:
return Qfalse;
default:
ossl_raise(eBNError, NULL);
}
/* not reachable */
return Qnil;
}
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#prime_fasttest? ⇒ Boolean #prime_fasttest?(checks) ⇒ Boolean #prime_fasttest?(checks, trial_div) ⇒ Boolean
Parameters
-
checks
- integer -
trial_div
- boolean
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# File 'ossl_bn.c', line 744
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(bn, checks, NULL, ossl_bn_ctx, NULL, do_trial_division)) {
case 1:
return Qtrue;
case 0:
return Qfalse;
default:
ossl_raise(eBNError, NULL);
}
/* not reachable */
return Qnil;
}
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#rshift! ⇒ Object
#set_bit! ⇒ Object
#sqr ⇒ Object
#to_bn ⇒ Object
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# File 'ossl_bn.c', line 280
static VALUE
ossl_bn_to_bn(VALUE self)
{
return self;
}
|
#to_i ⇒ Integer Also known as: to_int
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# File 'ossl_bn.c', line 262
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;
}
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#to_s ⇒ String #to_s(base) ⇒ String
Parameters
-
base
- integer -
Valid values:
-
-
0 - MPI
-
-
2 - binary
-
-
10 - the default
-
-
16 - hex
-
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# File 'ossl_bn.c', line 218
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;
}
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