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

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

All Implemented Interfaces:

Serializable, Comparable<EncType>
```
public enum EncType
extends Enum<EncType>
```
Defines the properties for various encryption types that I2P supports or may someday support. All PublicKeys and PrivateKeys have a type. Note that a EncType 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
`EC_P256` Used by i2pd.
`EC_P384` Reserved, not used by anybody.
`EC_P521` Reserved, not used by anybody.
`ECIES_X25519` Proposal 144.
`ELGAMAL_2048` 2048-bit MODP Group from RFC 3526.
`MLKEM1024_X25519` Proposal 169.
`MLKEM1024_X25519_CT` For internal use only (Bob side ciphertext) Proposal 169.
`MLKEM1024_X25519_INT` For internal use only (Alice side) Proposal 169.
`MLKEM512_X25519` Proposal 169.
`MLKEM512_X25519_CT` For internal use only (Bob side ciphertext) Proposal 169.
`MLKEM512_X25519_INT` For internal use only (Alice side) Proposal 169.
`MLKEM768_X25519` Proposal 169.
`MLKEM768_X25519_CT` For internal use only (Bob side ciphertext) Proposal 169.
`MLKEM768_X25519_INT` For internal use only (Alice side) Proposal 169.

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
`EncAlgo`	`getBaseAlgorithm()` the standard base algorithm name used for the Java crypto factories
`static EncType`	`getByCode(int code)` Gets the encryption type by code.
`int`	`getCode()` the unique identifier for this type
`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
`String`	`getSupportedSince()` The router version in which this type was first supported.
`boolean`	`isAvailable()` Checks if this encryption type is available in the JVM.
`static boolean`	`isAvailable(int code)` Checks if the encryption type with the given code is available.
`static boolean`	`isAvailable(String stype)` Checks if the encryption type with the given name or number is available.
`boolean`	`isPQ()` Checks if this is a post-quantum encryption type.
`static EncType`	`parseEncType(String stype)` Convenience for user apps
`static EncType`	`valueOf(String name)` Returns the enum constant of this type with the specified name.
`static EncType[]`	`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
  - EC_P256
```
public static final EncType EC_P256
```
    Used by i2pd. Not yet supported by Java I2P. Pubkey 64 bytes; privkey 32 bytes. See proposal 145.
  - EC_P384
```
public static final EncType EC_P384
```
    Reserved, not used by anybody. Pubkey 96 bytes; privkey 48 bytes. See proposal 145.
  - EC_P521
```
public static final EncType EC_P521
```
    Reserved, not used by anybody. Pubkey 132 bytes; privkey 66 bytes. See proposal 145.
  - ECIES_X25519
```
public static final EncType ECIES_X25519
```
    Proposal 144. Pubkey 32 bytes; privkey 32 bytes
  - ELGAMAL_2048
```
public static final EncType ELGAMAL_2048
```
    2048-bit MODP Group from RFC 3526. This is the default. Pubkey 256 bytes, privkey 256 bytes.
  - MLKEM1024_X25519
```
public static final EncType MLKEM1024_X25519
```
    Proposal 169. Pubkey 32 bytes; privkey 32 bytes
  - MLKEM1024_X25519_CT
```
public static final EncType MLKEM1024_X25519_CT
```
    For internal use only (Bob side ciphertext) Proposal 169. Pubkey 1568 bytes; privkey 0
  - MLKEM1024_X25519_INT
```
public static final EncType MLKEM1024_X25519_INT
```
    For internal use only (Alice side) Proposal 169. Pubkey 1568 bytes; privkey 3168 bytes
  - MLKEM512_X25519
```
public static final EncType MLKEM512_X25519
```
    Proposal 169. Pubkey 32 bytes; privkey 32 bytes
  - MLKEM512_X25519_CT
```
public static final EncType MLKEM512_X25519_CT
```
    For internal use only (Bob side ciphertext) Proposal 169. Pubkey 768 bytes; privkey 0
  - MLKEM512_X25519_INT
```
public static final EncType MLKEM512_X25519_INT
```
    For internal use only (Alice side) Proposal 169. Pubkey 800 bytes; privkey 1632 bytes
  - MLKEM768_X25519
```
public static final EncType MLKEM768_X25519
```
    Proposal 169. Pubkey 32 bytes; privkey 32 bytes
  - MLKEM768_X25519_CT
```
public static final EncType MLKEM768_X25519_CT
```
    For internal use only (Bob side ciphertext) Proposal 169. Pubkey 1088 bytes; privkey 0
  - MLKEM768_X25519_INT
```
public static final EncType MLKEM768_X25519_INT
```
    For internal use only (Alice side) Proposal 169. Pubkey 1184 bytes; privkey 2400 bytes
- Method Detail
  - getAlgorithmName
```
public String getAlgorithmName()
```
    the standard name used for the Java crypto factories
  - getBaseAlgorithm
```
public EncAlgo getBaseAlgorithm()
```
    the standard base algorithm name used for the Java crypto factories
  - getByCode
```
public static EncType getByCode(int code)
```
    Gets the encryption type by code.
    
    Returns:
    
    null if not supported
  - getCode
```
public int getCode()
```
    the unique identifier for this type
  - 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
  - getSupportedSince
```
public String getSupportedSince()
```
    The router version in which this type was first supported.
  - isAvailable
```
public boolean isAvailable()
```
    Checks if this encryption type is available in the JVM.
    
    Returns:
    
    true if supported in this JVM
  - isAvailable
```
public static boolean isAvailable(int code)
```
    Checks if the encryption type with the given code is available.
    
    Returns:
    
    true if supported in this JVM
  - isAvailable
```
public static boolean isAvailable(String stype)
```
    Checks if the encryption type with the given name or number is available.
    
    Parameters:
    
    stype - number or name
    
    Returns:
    
    true if supported in this JVM
  - isPQ
```
public boolean isPQ()
```
    Checks if this is a post-quantum encryption type.
    
    Returns:
    
    true if this is a PQ type
  - parseEncType
```
public static EncType parseEncType(String stype)
```
    Convenience for user apps
    
    Parameters:
    
    stype - number or name
    
    Returns:
    
    null if not found
  - valueOf
```
public static EncType 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 EncType[] 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 (EncType c : EncType.values())
    System.out.println(c);
```
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared

Enum EncType

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

EC_P256

EC_P384

EC_P521

ECIES_X25519

ELGAMAL_2048

MLKEM1024_X25519

MLKEM1024_X25519_CT

MLKEM1024_X25519_INT

MLKEM512_X25519

MLKEM512_X25519_CT

MLKEM512_X25519_INT

MLKEM768_X25519

MLKEM768_X25519_CT

MLKEM768_X25519_INT

Method Detail

getAlgorithmName

getBaseAlgorithm

getByCode

getCode

getParams

getPrivkeyLen

getPubkeyLen

getSupportedSince

isAvailable

isAvailable

isAvailable

isPQ

parseEncType

valueOf

values