Package net.i2p.router.message

Class GarlicMessageBuilder

java.lang.Object
net.i2p.router.message.GarlicMessageBuilder
public class GarlicMessageBuilder extends Object
Build garlic messages based on a GarlicConfig

  • Constructor Details

    • GarlicMessageBuilder

      public GarlicMessageBuilder()

  • Method Details

    • needsTags

      static boolean needsTags(RouterContext ctx, PublicKey key, Hash local, int minTagOverride)
      ELGAMAL_2048 only.
      Parameters:
      local - non-null; do not use this method for the router's SessionKeyManager
      minTagOverride - 0 for no override, > 0 to override SKM's settings

    • buildMessage

      public static GarlicMessage buildMessage(RouterContext ctx, GarlicConfig config, SessionKey wrappedKey, Set<SessionTag> wrappedTags, SessionKeyManager skm)
      Now unused, since we have to generate a reply token first in OCMOSJ but we don't know if tags are required yet. ELGAMAL_2048 only.
      Parameters:
      ctx - scope
      config - how/what to wrap
      wrappedKey - non-null with null data, output parameter that will be filled with the SessionKey used
      wrappedTags - Output parameter that will be filled with the sessionTags used. If non-empty on return you must call skm.tagsDelivered() when sent and then call skm.tagsAcked() or skm.failTags() later.
      skm - non-null
      Returns:
      null if expired
      Throws:
      IllegalArgumentException - on error

    • buildMessage

      public static GarlicMessage buildMessage(RouterContext ctx, GarlicConfig config, SessionKey wrappedKey, Set<SessionTag> wrappedTags, int numTagsToDeliver, SessionKeyManager skm)
      ELGAMAL_2048 only. Called by OCMJH.
      Parameters:
      ctx - scope
      config - how/what to wrap
      wrappedKey - non-null with null data, output parameter that will be filled with the SessionKey used
      wrappedTags - Output parameter that will be filled with the sessionTags used. If non-empty on return you must call skm.tagsDelivered() when sent and then call skm.tagsAcked() or skm.failTags() later.
      numTagsToDeliver - Only if the estimated available tags are below the threshold. Set to zero to disable tag delivery. You must set to zero if you are not equipped to confirm delivery and call skm.tagsAcked() or skm.failTags() later.
      skm - non-null
      Returns:
      null if expired
      Throws:
      IllegalArgumentException - on error

    • buildMessage

      public static GarlicMessage buildMessage(RouterContext ctx, GarlicConfig config, SessionKey wrappedKey, Set<SessionTag> wrappedTags, int numTagsToDeliver, int lowTagsThreshold, SessionKeyManager skm)
      ELGAMAL_2048 only. Called by netdb and above.
      Parameters:
      ctx - scope
      config - how/what to wrap
      wrappedKey - non-null with null data, output parameter that will be filled with the SessionKey used
      wrappedTags - Output parameter that will be filled with the sessionTags used. If non-empty on return you must call skm.tagsDelivered() when sent and then call skm.tagsAcked() or skm.failTags() later.
      numTagsToDeliver - only if the estimated available tags are below the threshold. Set to zero to disable tag delivery. You must set to zero if you are not equipped to confirm delivery and call skm.tagsAcked() or failTags() later. If this is always 0, it forces ElGamal every time.
      lowTagsThreshold - the threshold
      skm - non-null
      Returns:
      null if expired
      Throws:
      IllegalArgumentException - on error

    • buildMessage

      public static GarlicMessage buildMessage(RouterContext ctx, GarlicConfig config, Set<SessionTag> wrappedTags, PublicKey target, SessionKey encryptKey, SessionTag encryptTag)
      ELGAMAL_2048 only. Used by TestJob, and directly above, and by MessageWrapper for encrypting DatabaseLookupMessages and DSM/DSRM replies.
      Parameters:
      ctx - scope
      config - how/what to wrap
      wrappedTags - New tags to be sent along with the message. 200 max enforced at receiver; null OK
      target - public key of the location being garlic routed to (may be null if we know the encryptKey and encryptTag)
      encryptKey - sessionKey used to encrypt the current message, non-null
      encryptTag - sessionTag used to encrypt the current message, null to force ElG
      Returns:
      null if expired
      Throws:
      IllegalArgumentException - on error

    • buildMessage

      public static GarlicMessage buildMessage(RouterContext ctx, GarlicConfig config, SessionKey encryptKey, RatchetSessionTag encryptTag)
      Ratchet only. Used by TestJob, and by MessageWrapper for encrypting DatabaseLookupMessages and DSM/DSRM replies.
      Parameters:
      ctx - scope
      config - how/what to wrap
      encryptKey - sessionKey used to encrypt the current message, non-null
      encryptTag - sessionTag used to encrypt the current message, non-null
      Since:
      0.9.46

    • buildECIESMessage

      static GarlicMessage buildECIESMessage(RouterContext ctx, GarlicConfig config, Hash from, Destination to, SessionKeyManager skm, ReplyCallback callback)
      ECIES_X25519 only. Called by OCMJH only.
      Parameters:
      ctx - scope
      config - how/what to wrap, must have key set with setRecipientPublicKey()
      callback - may be null
      Returns:
      null if expired or on other errors
      Throws:
      IllegalArgumentException - on error
      Since:
      0.9.44

    • buildECIESMessage

      public static GarlicMessage buildECIESMessage(RouterContext ctx, GarlicConfig config)
      Encrypt from an anonymous source. ECIES_X25519 only. Called by MessageWrapper only.
      Parameters:
      ctx - scope
      config - how/what to wrap, must have key set with setRecipientPublicKey()
      Throws:
      IllegalArgumentException - on error
      Since:
      0.9.48