Class: OpenSSL::BN

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain: self, Comparable
Inherits:	Object
Defined in:	ext/openssl/ossl_bn.c, ext/openssl/lib/openssl/bn.rb

Class Method Summary

.generate_prime
.new ⇒ BN constructor

Construct a new ::OpenSSL BIGNUM object.
.pseudo_rand

.pseudo_rand(bits [, fill [, odd]]) -> aBN.
.pseudo_rand_range(range) ⇒ BN
.rand

.rand(bits [, fill [, odd]]) -> aBN.
.rand_range(range) ⇒ BN

Instance Attribute Summary

#negative? ⇒ Boolean readonly
#odd? ⇒ Boolean readonly
#one? ⇒ Boolean readonly
#zero? ⇒ Boolean readonly

Instance Method Summary

#%(bn2) ⇒ BN
#*(bn2) ⇒ BN
#**(bn2) ⇒ BN
#+(bn2) ⇒ BN
#+ ⇒ BN
#-(bn2) ⇒ BN
#- ⇒ BN
#/
#<<(bits) ⇒ BN
#<=>(bn2) ⇒ Integer (also: #cmp)
#==(obj) ⇒ Boolean (also: #===)

Returns true only if obj has the same value as bn.
#===(obj) ⇒ Boolean

Alias for #==.
#>>(bits) ⇒ BN
#bit_set? ⇒ Boolean
#clear_bit!(bit) ⇒ self
#cmp(bn2) ⇒ Integer

Alias for #<=>.
#coerce(other)
#copy ⇒ Integer (also: #initialize_copy)
#eql?(obj) ⇒ Boolean

Returns true only if obj is a BN with the same value as bn.
#gcd(bn2) ⇒ BN
#hash ⇒ Integer

Returns a hash code for this object.
#initialize_copy ⇒ Integer

Alias for #copy.
#lshift!(bits) ⇒ self
#mask_bits!
#mod_add(bn1, bn2) ⇒ BN
#mod_exp(bn1, bn2) ⇒ BN
#mod_inverse(bn2) ⇒ BN
#mod_mul(bn1, bn2) ⇒ BN
#mod_sqr(bn2) ⇒ BN
#mod_sub(bn1, bn2) ⇒ BN
#num_bits ⇒ Integer
#num_bytes ⇒ Integer
#pretty_print(q)
#prime? ⇒ Boolean

Performs a Miller-Rabin probabilistic primality test with checks iterations.
#prime_fasttest? ⇒ Boolean

Performs a Miller-Rabin primality test.
#rshift!(bits) ⇒ self
#set_bit!(bit) ⇒ self
#sqr ⇒ BN
#to_bn
#to_i ⇒ Integer (also: #to_int)
#to_int ⇒ Integer

Alias for #to_i.
#to_s ⇒ String

Parameters * base - ::Integer.
#ucmp(bn2) ⇒ Integer

Constructor Details

.new ⇒ `BN` .new(bn) ⇒ `BN` .new(integer) ⇒ `BN` .new(string) ⇒ `BN` .new(string, 0 | 2 | 10 | 16) ⇒ `BN`

Construct a new ::OpenSSL BIGNUM object.

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 184


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;
}

Class Method Details

.generate_prime

[ GitHub ]

.pseudo_rand

.pseudo_rand(bits [, fill [, odd]]) -> aBN

[ GitHub ]

.pseudo_rand_range(range) ⇒ `BN`

[ GitHub ]

.rand

.rand(bits [, fill [, odd]]) -> aBN

[ GitHub ]

.rand_range(range) ⇒ `BN`

[ GitHub ]

Instance Attribute Details

#negative? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 378


static VALUE
ossl_bn_is_negative(VALUE self)
{
    BIGNUM *bn;

    GetBN(self, bn);
    if (BN_is_zero(bn))
	return Qfalse;
    return BN_is_negative(bn) ? Qtrue : Qfalse;
}

#odd? ⇒ `Boolean` (readonly)

[ GitHub ]

#one? ⇒ `Boolean` (readonly)

[ GitHub ]

#zero? ⇒ `Boolean` (readonly)

[ GitHub ]

Instance Method Details

#%(bn2) ⇒ `BN`

[ GitHub ]

#*(bn2) ⇒ `BN`

[ GitHub ]

#**(bn2) ⇒ `BN`

[ GitHub ]

#+(bn2) ⇒ `BN`

[ GitHub ]

#+ ⇒ `BN`

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 870


static VALUE
ossl_bn_uplus(VALUE self)
{
    return self;
}

#-(bn2) ⇒ `BN`

[ GitHub ]

#- ⇒ `BN`

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 880


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;
}

#/

[ GitHub ]

#<<(bits) ⇒ `BN`

[ GitHub ]

#<=>(bn2) ⇒ Integer Also known as: #cmp

[ GitHub ]

#==(obj) ⇒ `Boolean` Also known as: #===

Returns true only if obj has the same value as bn. Contrast this with #eql?, which requires obj to be BN.

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 932


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;
}

#==(obj) ⇒ `Boolean` #===(obj) ⇒ `Boolean`

Alias for #==.

#>>(bits) ⇒ `BN`

[ GitHub ]

#bit_set? ⇒ `Boolean`

[ GitHub ]

#clear_bit!(bit) ⇒ `self`

[ GitHub ]

#<=>(bn2) ⇒ Integer #cmp(bn2) ⇒ Integer

Alias for #<=>.

#coerce(other)

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 322


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 ⇒ Integer Also known as: #initialize_copy

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 848


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) ⇒ `Boolean`

Returns true only if obj is a BN with the same value as bn. Contrast this with #==, which performs type conversions.

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 957


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) ⇒ `BN`

[ GitHub ]

#hash ⇒ Integer

Returns a hash code for this object.

#copy ⇒ Integer #initialize_copy ⇒ Integer

Alias for #copy.

#lshift!(bits) ⇒ `self`

[ GitHub ]

#mask_bits!

[ GitHub ]

#mod_add(bn1, bn2) ⇒ `BN`

[ GitHub ]

#mod_exp(bn1, bn2) ⇒ `BN`

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#mod_inverse(bn2) ⇒ `BN`

[ GitHub ]

#mod_mul(bn1, bn2) ⇒ `BN`

[ GitHub ]

#mod_sqr(bn2) ⇒ `BN`

[ GitHub ]

#mod_sub(bn1, bn2) ⇒ `BN`

[ GitHub ]

#num_bits ⇒ Integer

[ GitHub ]

#num_bytes ⇒ Integer

[ GitHub ]

#pretty_print(q)

[ GitHub ]

# File 'ext/openssl/lib/openssl/bn.rb', line 20


def pretty_print(q)
  q.object_group(self) {
    q.text ' '
    q.text to_i.to_s
  }
end

#prime? ⇒ `Boolean` #prime?(checks) ⇒ `Boolean`

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

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 1012


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;
}

#prime_fasttest? ⇒ `Boolean` #prime_fasttest?(checks) ⇒ `Boolean` #prime_fasttest?(checks, trial_div) ⇒ `Boolean`

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

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 1048


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;
}

#rshift!(bits) ⇒ `self`

[ GitHub ]

#set_bit!(bit) ⇒ `self`

[ GitHub ]

#sqr ⇒ `BN`

[ GitHub ]

#to_bn

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 316


static VALUE
ossl_bn_to_bn(VALUE self)
{
    return self;
}

#to_i ⇒ Integer Also known as: #to_int

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 298


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;
}

#to_i ⇒ Integer #to_int ⇒ Integer

Alias for #to_i.

#to_s ⇒ `String` #to_s(base) ⇒ `String`

Parameters

base - ::Integer Valid values:
- 0 - MPI
- 2 - binary
- 10 - the default
- 16 - hex

[ GitHub ]

# File 'ext/openssl/ossl_bn.c', line 254


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

[ GitHub ]

Class: OpenSSL::BN

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new ⇒ BN .new(bn) ⇒ BN .new(integer) ⇒ BN .new(string) ⇒ BN .new(string, 0 | 2 | 10 | 16) ⇒ BN

Class Method Details

.generate_prime

.pseudo_rand

.pseudo_rand_range(range) ⇒ BN

.rand

.rand_range(range) ⇒ BN

Instance Attribute Details

#negative? ⇒ Boolean (readonly)

#odd? ⇒ Boolean (readonly)

#one? ⇒ Boolean (readonly)

#zero? ⇒ Boolean (readonly)

Instance Method Details

#%(bn2) ⇒ BN

#*(bn2) ⇒ BN

#**(bn2) ⇒ BN

#+(bn2) ⇒ BN

#+ ⇒ BN

#-(bn2) ⇒ BN

#- ⇒ BN

#/

#<<(bits) ⇒ BN

#<=>(bn2) ⇒ Integer Also known as: #cmp

#==(obj) ⇒ Boolean Also known as: #===

#==(obj) ⇒ Boolean #===(obj) ⇒ Boolean

#>>(bits) ⇒ BN

#bit_set? ⇒ Boolean

#clear_bit!(bit) ⇒ self

#<=>(bn2) ⇒ Integer #cmp(bn2) ⇒ Integer

#coerce(other)

#copy ⇒ Integer Also known as: #initialize_copy

#eql?(obj) ⇒ Boolean

#gcd(bn2) ⇒ BN

#hash ⇒ Integer

#copy ⇒ Integer #initialize_copy ⇒ Integer

#lshift!(bits) ⇒ self

#mask_bits!

#mod_add(bn1, bn2) ⇒ BN

#mod_exp(bn1, bn2) ⇒ BN

#mod_inverse(bn2) ⇒ BN

#mod_mul(bn1, bn2) ⇒ BN

#mod_sqr(bn2) ⇒ BN

#mod_sub(bn1, bn2) ⇒ BN

#num_bits ⇒ Integer

#num_bytes ⇒ Integer

#pretty_print(q)

#prime? ⇒ Boolean #prime?(checks) ⇒ Boolean

Parameters

#prime_fasttest? ⇒ Boolean #prime_fasttest?(checks) ⇒ Boolean #prime_fasttest?(checks, trial_div) ⇒ Boolean

Parameters

#rshift!(bits) ⇒ self

#set_bit!(bit) ⇒ self

#sqr ⇒ BN

#to_bn

#to_i ⇒ Integer Also known as: #to_int

#to_i ⇒ Integer #to_int ⇒ Integer

#to_s ⇒ String #to_s(base) ⇒ String

Parameters

#ucmp(bn2) ⇒ Integer

.new ⇒ `BN` .new(bn) ⇒ `BN` .new(integer) ⇒ `BN` .new(string) ⇒ `BN` .new(string, 0 | 2 | 10 | 16) ⇒ `BN`

.pseudo_rand_range(range) ⇒ `BN`

.rand_range(range) ⇒ `BN`

#negative? ⇒ `Boolean` (readonly)

#odd? ⇒ `Boolean` (readonly)

#one? ⇒ `Boolean` (readonly)

#zero? ⇒ `Boolean` (readonly)

#%(bn2) ⇒ `BN`

#*(bn2) ⇒ `BN`

#**(bn2) ⇒ `BN`

#+(bn2) ⇒ `BN`

#+ ⇒ `BN`

#-(bn2) ⇒ `BN`

#- ⇒ `BN`

#<<(bits) ⇒ `BN`

#==(obj) ⇒ `Boolean` Also known as: #===

#==(obj) ⇒ `Boolean` #===(obj) ⇒ `Boolean`

#>>(bits) ⇒ `BN`

#bit_set? ⇒ `Boolean`

#clear_bit!(bit) ⇒ `self`

#eql?(obj) ⇒ `Boolean`

#gcd(bn2) ⇒ `BN`

#lshift!(bits) ⇒ `self`

#mod_add(bn1, bn2) ⇒ `BN`

#mod_exp(bn1, bn2) ⇒ `BN`

#mod_inverse(bn2) ⇒ `BN`

#mod_mul(bn1, bn2) ⇒ `BN`

#mod_sqr(bn2) ⇒ `BN`

#mod_sub(bn1, bn2) ⇒ `BN`

#prime? ⇒ `Boolean` #prime?(checks) ⇒ `Boolean`

#prime_fasttest? ⇒ `Boolean` #prime_fasttest?(checks) ⇒ `Boolean` #prime_fasttest?(checks, trial_div) ⇒ `Boolean`

#rshift!(bits) ⇒ `self`

#set_bit!(bit) ⇒ `self`

#sqr ⇒ `BN`

#to_s ⇒ `String` #to_s(base) ⇒ `String`