Bouncy Castle Cryptography Library 1.80 · org.bouncycastle.asn1.x9.DomainParameters

Modifier and Type	Field and Description
private final ASN1Integer	g
private final ASN1Integer	j
private final ASN1Integer	p
private final ASN1Integer	q
private final ValidationParams	validationParams

Constructor Summary

Access	Constructor and Description
public	DomainParameters(BigInteger the prime p defining the Galois field. p, BigInteger the generator of the multiplicative subgroup of order g. g, BigInteger specifies the prime factor of p - 1 q, BigInteger optionally specifies the value that satisfies the equation p = jq+1 j, ValidationParams parameters for validating these domain parameters. validationParams) Base constructor - the full domain parameter set.
private	DomainParameters(ASN1Sequence seq)

Access

Constructor and Description

public

DomainParameters(BigInteger

the prime p defining the Galois field.

p, BigInteger

the generator of the multiplicative subgroup of order g.

g, BigInteger

specifies the prime factor of p - 1

q, BigInteger

optionally specifies the value that satisfies the equation p = jq+1

j, ValidationParams

parameters for validating these domain parameters.

validationParams)

Base constructor - the full domain parameter set.

private

DomainParameters(ASN1Sequence seq)

Method Summary

Modifier and Type	Method and Description
public BigInteger	Returns: the generator g. getG() Return the generator of the multiplicative subgroup of order g.
public static DomainParameters	Returns: a DomainParameters getInstance(ASN1TaggedObject a tagged object. obj, boolean true if the contents of the object is explictly tagged, false otherwise. explicit) Return a DomainParameters object from the passed in tagged object.
public static DomainParameters	Returns: a DomainParameters getInstance(Object an object for conversion or a byte[]. obj) Return a DomainParameters object from the passed in object.
public BigInteger	Returns: j value or null. getJ() Return the value that satisfies the equation p = jq+1 (if present).
private static ASN1Encodable	getNext(Enumeration<E> e)
public BigInteger	Returns: the prime p. getP() Return the prime p defining the Galois field.
public BigInteger	Returns: q value getQ() Return q, the prime factor of p - 1
public ValidationParams	Returns: validation parameters, or null if absent. getValidationParams() Return the validation parameters for this set (if present).
public ASN1Primitive	Returns: a DERSequence containing the parameter values. toASN1Primitive() Implements abstract org.bouncycastle.asn1.ASN1Object.toASN1Primitive. Implements org.bouncycastle.asn1.ASN1Encodable.toASN1Primitive. Return an ASN.1 primitive representation of this object.

Inherited from org.bouncycastle.asn1.ASN1Object:: encodeTo encodeTo equals getEncoded getEncoded hasEncodedTagValue hashCode

Field Detail

g	back to summary
private final ASN1Integer g

j	back to summary
private final ASN1Integer j

p	back to summary
private final ASN1Integer p

q	back to summary
private final ASN1Integer q

validationParams	back to summary
private final ValidationParams validationParams

Constructor Detail

DomainParameters	back to summary
public DomainParameters(BigInteger p, BigInteger g, BigInteger q, BigInteger j, ValidationParams validationParams) Base constructor - the full domain parameter set. Parameters p:BigInteger the prime p defining the Galois field. g:BigInteger the generator of the multiplicative subgroup of order g. q:BigInteger specifies the prime factor of p - 1 j:BigInteger optionally specifies the value that satisfies the equation p = jq+1 validationParams:ValidationParams parameters for validating these domain parameters.

DomainParameters

back to summary

public DomainParameters(BigInteger p, BigInteger g, BigInteger q, BigInteger j, ValidationParams validationParams)

Base constructor - the full domain parameter set.

Parameters

p:BigInteger: the prime p defining the Galois field.
g:BigInteger: the generator of the multiplicative subgroup of order g.
q:BigInteger: specifies the prime factor of p - 1
j:BigInteger: optionally specifies the value that satisfies the equation p = jq+1
validationParams:ValidationParams: parameters for validating these domain parameters.

DomainParameters	back to summary
private DomainParameters(ASN1Sequence seq)

Method Detail

getG	back to summary
public BigInteger getG() Return the generator of the multiplicative subgroup of order g. Returns:BigInteger the generator g.

getG

back to summary

public BigInteger getG()

Return the generator of the multiplicative subgroup of order g.

Returns:BigInteger: the generator g.

getInstance	back to summary
public static DomainParameters getInstance(ASN1TaggedObject obj, boolean explicit) Return a DomainParameters object from the passed in tagged object. Parameters obj:ASN1TaggedObject a tagged object. explicit:boolean true if the contents of the object is explictly tagged, false otherwise. Returns:DomainParameters a DomainParameters

getInstance

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public static DomainParameters getInstance(ASN1TaggedObject obj, boolean explicit)

Return a DomainParameters object from the passed in tagged object.

Parameters

obj:ASN1TaggedObject: a tagged object.
explicit:boolean: true if the contents of the object is explictly tagged, false otherwise.

Returns:DomainParameters

a DomainParameters

getInstance	back to summary
public static DomainParameters getInstance(Object obj) Return a DomainParameters object from the passed in object. Parameters obj:Object an object for conversion or a byte[]. Returns:DomainParameters a DomainParameters

getInstance

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public static DomainParameters getInstance(Object obj)

Return a DomainParameters object from the passed in object.

Parameters

obj:Object: an object for conversion or a byte[].

Returns:DomainParameters

a DomainParameters

getJ	back to summary
public BigInteger getJ() Return the value that satisfies the equation p = jq+1 (if present). Returns:BigInteger j value or null.

getJ

back to summary

public BigInteger getJ()

Return the value that satisfies the equation p = jq+1 (if present).

Returns:BigInteger: j value or null.

getNext	back to summary
private static ASN1Encodable getNext(Enumeration<E> e)

getP	back to summary
public BigInteger getP() Return the prime p defining the Galois field. Returns:BigInteger the prime p.

getP

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public BigInteger getP()

Return the prime p defining the Galois field.

Returns:BigInteger: the prime p.

getQ	back to summary
public BigInteger getQ() Return q, the prime factor of p - 1 Returns:BigInteger q value

getQ

back to summary

public BigInteger getQ()

Return q, the prime factor of p - 1

Returns:BigInteger: q value

getValidationParams	back to summary
public ValidationParams getValidationParams() Return the validation parameters for this set (if present). Returns:ValidationParams validation parameters, or null if absent.

getValidationParams

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public ValidationParams getValidationParams()

Return the validation parameters for this set (if present).

Returns:ValidationParams: validation parameters, or null if absent.

toASN1Primitive	back to summary
public ASN1Primitive toASN1Primitive() Implements abstract org.bouncycastle.asn1.ASN1Object.toASN1Primitive. Implements org.bouncycastle.asn1.ASN1Encodable.toASN1Primitive. Return an ASN.1 primitive representation of this object. Returns:ASN1Primitive a DERSequence containing the parameter values.

toASN1Primitive

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public ASN1Primitive toASN1Primitive()

Implements abstract org.bouncycastle.asn1.ASN1Object.toASN1Primitive.

Implements org.bouncycastle.asn1.ASN1Encodable.toASN1Primitive.

Return an ASN.1 primitive representation of this object.

Returns:ASN1Primitive: a DERSequence containing the parameter values.

public Class DomainParameters

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