org.dihedron.crypto.constants

Enum SignatureAlgorithm

java.lang.Object

java.lang.Enum<SignatureAlgorithm>

org.dihedron.crypto.constants.SignatureAlgorithm

All Implemented Interfaces:

Serializable, Comparable<SignatureAlgorithm>

public enum SignatureAlgorithm
extends Enum<SignatureAlgorithm>

Author:

Andrea Funto'

Enum Constant Summary

Enum Constants

Enum Constant and Description
MD5_WITH_RSA The MD5 with RSA digital signature algorithm.
SHA1_WITH_RSA The SHA1 with RSA digital signature algorithm.
SHA224_WITH_RSA The SHA224 with RSA digital signature algorithm.
SHA256_WITH_RSA The SHA256 with RSA digital signature algorithm (default).
SHA384_WITH_RSA The SHA384 with RSA digital signature algorithm.
SHA512_WITH_RSA The SHA512 with RSA digital signature algorithm.

Method Summary

Methods

Modifier and Type	Method and Description
static SignatureAlgorithm	fromAlgorithmAsn1Ids(String digestAlgorithm, String encryptionAlgorithm) Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.
static SignatureAlgorithm	fromAlgorithmDescriptions(String digestAlgorithm, String encryptionAlgorithm) Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.
static SignatureAlgorithm	fromBouncyCastleCode(String bcCode) Attempts to translate the BouncyCastle code of a signature algorithm (in the "SHA1withRSA" format into an enumeration value.
static SignatureAlgorithm	fromBouncyCastleCodes(String digestAlgorithm, String encryptionAlgorithm) Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.
DigestAlgorithm	getDigestAlgorithm() Returns the algorithm used to hash the data.
EncryptionAlgorithm	getEncryptionAlgorithm() Returns the algorithm used to encrypt the hashed data.
String	toBouncyCastleCode() Provides a string representation of the signature algorithm in the format used by BouncyCastle to identify it, e.g.
String	toString() Returns the algorithm string representation, such as "SHA256withRSA".
static SignatureAlgorithm	valueOf(String name) Returns the enum constant of this type with the specified name.
static SignatureAlgorithm[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

MD5_WITH_RSA

public static final SignatureAlgorithm MD5_WITH_RSA

The MD5 with RSA digital signature algorithm.

SHA1_WITH_RSA

public static final SignatureAlgorithm SHA1_WITH_RSA

The SHA1 with RSA digital signature algorithm.

SHA224_WITH_RSA

public static final SignatureAlgorithm SHA224_WITH_RSA

The SHA224 with RSA digital signature algorithm.

SHA256_WITH_RSA

public static final SignatureAlgorithm SHA256_WITH_RSA

The SHA256 with RSA digital signature algorithm (default).

SHA384_WITH_RSA

public static final SignatureAlgorithm SHA384_WITH_RSA

The SHA384 with RSA digital signature algorithm.

SHA512_WITH_RSA

public static final SignatureAlgorithm SHA512_WITH_RSA

The SHA512 with RSA digital signature algorithm.

Method Detail

values

public static SignatureAlgorithm[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (SignatureAlgorithm c : SignatureAlgorithm.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SignatureAlgorithm valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

fromBouncyCastleCode

public static SignatureAlgorithm fromBouncyCastleCode(String bcCode)

Attempts to translate the BouncyCastle code of a signature algorithm (in the "SHA1withRSA" format into an enumeration value.

Parameters:

bcCode - the BouncyCastle code for the signature algorithm.

Returns:

the corresponding enumeration value, or null if none found.

fromAlgorithmDescriptions

public static SignatureAlgorithm fromAlgorithmDescriptions(String digestAlgorithm,
                                           String encryptionAlgorithm)

Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.

Parameters:

digestAlgorithm - the description of the algorithm used to calculate the data checksum (hash), e.g. "sha-1".

encryptionAlgorithm - the description of the algorithm used to encrypt the hash in the signature, e.g. "rsa".

fromAlgorithmAsn1Ids

public static SignatureAlgorithm fromAlgorithmAsn1Ids(String digestAlgorithm,
                                      String encryptionAlgorithm)

Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.

Parameters:

digestAlgorithm - the ASN.1 code of the algorithm used to calculate the data checksum (hash), e.g. "sha-1".

encryptionAlgorithm - the ASN.1 code of the algorithm used to encrypt the hash in the signature, e.g. "rsa".

fromBouncyCastleCodes

public static SignatureAlgorithm fromBouncyCastleCodes(String digestAlgorithm,
                                       String encryptionAlgorithm)

Factory method, returns the enumeration value corresponding to the two given algorithm descriptions.

Parameters:

digestAlgorithm - the BouncyCastle code of the algorithm used to calculate the data checksum (hash), e.g. "SHA256".

encryptionAlgorithm - the BouncyCastle code of the algorithm used to encrypt the hash in the signature, e.g. "RSA".

getDigestAlgorithm

public DigestAlgorithm getDigestAlgorithm()

Returns the algorithm used to hash the data.

Returns:

the algorithm used to hash the data.

getEncryptionAlgorithm

public EncryptionAlgorithm getEncryptionAlgorithm()

Returns the algorithm used to encrypt the hashed data.

Returns:

the algorithm used to encrypt the hashed data.

toBouncyCastleCode

public String toBouncyCastleCode()

Provides a string representation of the signature algorithm in the format used by BouncyCastle to identify it, e.g. "SHA256withRSA".

Returns:

the digest and encryption algorithm combination as BoucnyCastle expects it, e.g. "SHA1withRSA".

toString

public String toString()

Returns the algorithm string representation, such as "SHA256withRSA".

Overrides:

toString in class Enum<SignatureAlgorithm>

Returns:

the algorithm string representation, such as "SHA256withRSA".