Package net.i2p.crypto

Class KeyGenerator

java.lang.Object
net.i2p.crypto.KeyGenerator
public final class KeyGenerator extends Object
Define a way of generating asymmetrical key pairs as well as symmetrical keys
Author:
jrandom

  • Field Details

    • PUBKEY_EXPONENT_SIZE

      @Deprecated public static final int PUBKEY_EXPONENT_SIZE
      Deprecated.
      use getElGamalExponentSize() which allows override in the properties

  • Constructor Details

  • Method Details

    • getInstance

      public static KeyGenerator getInstance()

    • generateSessionKey

      public SessionKey generateSessionKey()
      Generate a private 256 bit session key
      Returns:
      session key

    • generateSessionKey

      public SessionKey generateSessionKey(byte[] salt, byte[] passphrase)
      PBE the passphrase with the salt. Warning - SLOW

    • useLongElGamalExponent

      public boolean useLongElGamalExponent()
      Since:
      0.9.8

    • getElGamalExponentSize

      public int getElGamalExponentSize()
      Since:
      0.9.8

    • generatePKIKeypair

      public Object[] generatePKIKeypair()
      ElGamal only. Generate a pair of keys, where index 0 is a PublicKey, and index 1 is a PrivateKey
      Returns:
      pair of keys

    • generatePKIKeys

      public SimpleDataStructure[] generatePKIKeys()
      ElGamal only. Same as generatePKIKeypair() but different return type.
      Since:
      0.8.7

    • generatePKIKeys

      public KeyPair generatePKIKeys(EncType type)
      Supports EncTypes
      Since:
      0.9.38

    • getPublicKey

      public static PublicKey getPublicKey(PrivateKey priv)
      Convert a PrivateKey to its corresponding PublicKey. As of 0.9.38, supports EncTypes
      Parameters:
      priv - PrivateKey object
      Returns:
      the corresponding PublicKey object
      Throws:
      IllegalArgumentException - on bad key

    • generateSigningKeypair

      public Object[] generateSigningKeypair()
      Generate a pair of DSA keys, where index 0 is a SigningPublicKey, and index 1 is a SigningPrivateKey. DSA-SHA1 only.
      Returns:
      pair of keys

    • generateSigningKeys

      public SimpleDataStructure[] generateSigningKeys()
      DSA-SHA1 only. Same as above but different return type
      Since:
      0.8.7

    • generateSigningKeys

      public SimpleDataStructure[] generateSigningKeys(SigType type) throws GeneralSecurityException
      Generic signature type, supports DSA, RSA, ECDSA, EdDSA
      Throws:
      GeneralSecurityException
      Since:
      0.9.9

    • getSigningPublicKey

      public static SigningPublicKey getSigningPublicKey(SigningPrivateKey priv)
      Convert a SigningPrivateKey to a SigningPublicKey. As of 0.9.16, supports all key types.
      Parameters:
      priv - a SigningPrivateKey object
      Returns:
      a SigningPublicKey object
      Throws:
      IllegalArgumentException - on bad key or unknown type

    • main

      public static void main(String[] args)
      Usage: KeyGenerator [sigtype...]