SigType (Javadocs [I2P+ 2.11.0+] - API Version 0.9.68+)

java.lang.Object
- java.lang.Enum<SigType>
- - net.i2p.crypto.SigType

All Implemented Interfaces:

Serializable, Comparable<SigType>
```
public enum SigType
extends Enum<SigType>
```
Defines the properties for various signature types that I2P supports or may someday support. All Signatures, SigningPublicKeys, and SigningPrivateKeys have a type. Note that a SigType specifies both an algorithm and parameters, so that we may change primes or curves for a given algorithm.

Enum Constant Summary

Enum Constants
Enum Constant and Description
`DSA_SHA1` DSA_SHA1 is the default.
`ECDSA_SHA256_P256` Pubkey 64 bytes; privkey 32 bytes; hash 32 bytes; sig 64 bytes
`ECDSA_SHA384_P384` Pubkey 96 bytes; privkey 48 bytes; hash 48 bytes; sig 96 bytes
`ECDSA_SHA512_P521` Pubkey 132 bytes; privkey 66 bytes; hash 64 bytes; sig 132 bytes
`EdDSA_SHA512_Ed25519` Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes Due to bugs in previous versions, minimum version is 0.9.17.
`EdDSA_SHA512_Ed25519ph` Prehash version (double hashing, for offline use such as su3, not for use on the network) Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes
`RedDSA_SHA512_Ed25519` Blinded version of EdDSA, use for encrypted LS2 Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes
`RSA_SHA256_2048` Pubkey 256 bytes; privkey 512 bytes; hash 32 bytes; sig 256 bytes
`RSA_SHA384_3072` Pubkey 384 bytes; privkey 768 bytes; hash 48 bytes; sig 384 bytes
`RSA_SHA512_4096` Pubkey 512 bytes; privkey 1024 bytes; hash 64 bytes; sig 512 bytes

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`getAlgorithmName()` the standard name used for the Java crypto factories
`SigAlgo`	`getBaseAlgorithm()` the standard base algorithm name used for the Java crypto factories
`static SigType`	`getByCode(int code)` Gets the signature type by code.
`int`	`getCode()` the unique identifier for this type
`MessageDigest`	`getDigestInstance()` Gets a MessageDigest instance for this signature type.
`SimpleDataStructure`	`getHashInstance()` Gets a Hash instance for this signature type.
`int`	`getHashLen()` the length of the hash, in bytes
`String`	`getOID()` The OID for the signature.
`AlgorithmParameterSpec`	`getParams()` The elliptic curve ECParameterSpec for ECDSA; DSAParameterSpec for DSA
`int`	`getPrivkeyLen()` the length of the private key, in bytes
`int`	`getPubkeyLen()` the length of the public key, in bytes
`int`	`getSigLen()` the length of the signature, in bytes
`String`	`getSupportedSince()` The router version in which this type was first supported.
`boolean`	`isAvailable()` Checks if this signature type is available in the JVM.
`static boolean`	`isAvailable(int code)` Checks if the signature type with the given code is available.
`static boolean`	`isAvailable(String stype)` Checks if the signature type with the given name or number is available.
`static SigType`	`parseSigType(String stype)` Convenience for user apps
`static SigType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static SigType[]`	`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, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - DSA_SHA1
```
public static final SigType DSA_SHA1
```
    DSA_SHA1 is the default. Pubkey 128 bytes; privkey 20 bytes; hash 20 bytes; sig 40 bytes
  - ECDSA_SHA256_P256
```
public static final SigType ECDSA_SHA256_P256
```
    Pubkey 64 bytes; privkey 32 bytes; hash 32 bytes; sig 64 bytes
  - ECDSA_SHA384_P384
```
public static final SigType ECDSA_SHA384_P384
```
    Pubkey 96 bytes; privkey 48 bytes; hash 48 bytes; sig 96 bytes
  - ECDSA_SHA512_P521
```
public static final SigType ECDSA_SHA512_P521
```
    Pubkey 132 bytes; privkey 66 bytes; hash 64 bytes; sig 132 bytes
  - EdDSA_SHA512_Ed25519
```
public static final SigType EdDSA_SHA512_Ed25519
```
    Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes Due to bugs in previous versions, minimum version is 0.9.17.
  - EdDSA_SHA512_Ed25519ph
```
public static final SigType EdDSA_SHA512_Ed25519ph
```
    Prehash version (double hashing, for offline use such as su3, not for use on the network) Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes
  - RedDSA_SHA512_Ed25519
```
public static final SigType RedDSA_SHA512_Ed25519
```
    Blinded version of EdDSA, use for encrypted LS2 Pubkey 32 bytes; privkey 32 bytes; hash 64 bytes; sig 64 bytes
  - RSA_SHA256_2048
```
public static final SigType RSA_SHA256_2048
```
    Pubkey 256 bytes; privkey 512 bytes; hash 32 bytes; sig 256 bytes
  - RSA_SHA384_3072
```
public static final SigType RSA_SHA384_3072
```
    Pubkey 384 bytes; privkey 768 bytes; hash 48 bytes; sig 384 bytes
  - RSA_SHA512_4096
```
public static final SigType RSA_SHA512_4096
```
    Pubkey 512 bytes; privkey 1024 bytes; hash 64 bytes; sig 512 bytes
- Method Detail
  - getAlgorithmName
```
public String getAlgorithmName()
```
    the standard name used for the Java crypto factories
  - getBaseAlgorithm
```
public SigAlgo getBaseAlgorithm()
```
    the standard base algorithm name used for the Java crypto factories
  - getByCode
```
public static SigType getByCode(int code)
```
    Gets the signature type by code.
    
    Returns:
    
    null if not supported
  - getCode
```
public int getCode()
```
    the unique identifier for this type
  - getDigestInstance
```
public MessageDigest getDigestInstance()
```
    Gets a MessageDigest instance for this signature type.
    
    Throws:
    
    UnsupportedOperationException - if not supported
  - getHashInstance
```
public SimpleDataStructure getHashInstance()
```
    Gets a Hash instance for this signature type.
    
    Throws:
    
    UnsupportedOperationException - if not supported
  - getHashLen
```
public int getHashLen()
```
    the length of the hash, in bytes
  - getOID
```
public String getOID()
```
    The OID for the signature.
  - getParams
```
public AlgorithmParameterSpec getParams()
                                 throws InvalidParameterSpecException
```
    The elliptic curve ECParameterSpec for ECDSA; DSAParameterSpec for DSA
    
    Throws:
    
    InvalidParameterSpecException - if the algorithm is not available on this JVM.
  - getPrivkeyLen
```
public int getPrivkeyLen()
```
    the length of the private key, in bytes
  - getPubkeyLen
```
public int getPubkeyLen()
```
    the length of the public key, in bytes
  - getSigLen
```
public int getSigLen()
```
    the length of the signature, in bytes
  - getSupportedSince
```
public String getSupportedSince()
```
    The router version in which this type was first supported.
  - isAvailable
```
public boolean isAvailable()
```
    Checks if this signature type is available in the JVM.
    
    Returns:
    
    true if supported in this JVM
  - isAvailable
```
public static boolean isAvailable(int code)
```
    Checks if the signature type with the given code is available.
    
    Returns:
    
    true if supported in this JVM
  - isAvailable
```
public static boolean isAvailable(String stype)
```
    Checks if the signature type with the given name or number is available.
    
    Parameters:
    
    stype - number or name
    
    Returns:
    
    true if supported in this JVM
  - parseSigType
```
public static SigType parseSigType(String stype)
```
    Convenience for user apps
    
    Parameters:
    
    stype - number or name
    
    Returns:
    
    null if not found
  - valueOf
```
public static SigType 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
  - values
```
public static SigType[] 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 (SigType c : SigType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared

Enum SigType

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

DSA_SHA1

ECDSA_SHA256_P256

ECDSA_SHA384_P384

ECDSA_SHA512_P521

EdDSA_SHA512_Ed25519

EdDSA_SHA512_Ed25519ph

RedDSA_SHA512_Ed25519

RSA_SHA256_2048

RSA_SHA384_3072

RSA_SHA512_4096

Method Detail

getAlgorithmName

getBaseAlgorithm

getByCode

getCode

getDigestInstance

getHashInstance

getHashLen

getOID

getParams

getPrivkeyLen

getPubkeyLen

getSigLen

getSupportedSince

isAvailable

isAvailable

isAvailable

parseSigType

valueOf

values