java.lang.Object | |
↳ | java.security.spec.ECFieldF2m |
The parameters specifying a characteristic 2 finite field of an elliptic curve.
Public Constructors | |||||||||||
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Creates a new
ECFieldF2m with 2^m elements with a normal
basis. | |||||||||||
Creates a new
ECFieldF2m with 2^m elements with a polynomial
basis and the reduction polynomial based on rp . | |||||||||||
Creates a new
ECFieldF2m with 2^m elements with
a polynomial basis and the reduction polynomial based on ks . |
Public Methods | |||||||||||
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Returns whether the specified object equals to this finite field.
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Returns the size of this finite field (in bits).
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Returns the exponent
m for this finite field, with 2^m as
the number of elements. | |||||||||||
Returns a copy of the integer array containing the order of the middle
term(s) of the reduction polynomial for a polynomial basis.
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Returns the base of the reduction polynomial with the n-th bit
corresponding to the n-th coefficient of the reduction polynomial for a
polynomial basis.
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Returns the hashcode value for this finite field.
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
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From interface
java.security.spec.ECField
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Creates a new ECFieldF2m
with 2^m
elements with a normal
basis.
m | the exponent m for the number of elements. |
---|
IllegalArgumentException | if m <= zero .
|
---|
Creates a new ECFieldF2m
with 2^m
elements with a polynomial
basis and the reduction polynomial based on rp
.
The reduction polynomial must be either trinomial or pentanomial.
m | the exponent m for the number of elements. |
---|---|
rp | the base of the reduction polynomial with the n-th bit corresponding to the n-th coefficient of the reduction polynomial. |
IllegalArgumentException | if m <= zero or the rp is invalid.
|
---|
Creates a new ECFieldF2m
with 2^m
elements with
a polynomial basis and the reduction polynomial based on ks
.
The reduction polynomial must be either trinomial or pentanomial.
m | the exponent m for the number of elements. |
---|---|
ks | the base of the reduction polynomial with coefficients given in descending order. |
IllegalArgumentException | if m <= zero or the reduction polynomial is not
valid.
|
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Returns whether the specified object equals to this finite field.
obj | the object to compare to this finite field. |
---|
true
if the specified object is equal to this finite field,
otherwise false
.
Returns the size of this finite field (in bits).
Returns the exponent m
for this finite field, with 2^m
as
the number of elements.
m
for this finite field
Returns a copy of the integer array containing the order of the middle term(s) of the reduction polynomial for a polynomial basis.
null
for a normal basis.
Returns the base of the reduction polynomial with the n-th bit corresponding to the n-th coefficient of the reduction polynomial for a polynomial basis.
null
for a normal basis.
Returns the hashcode value for this finite field.