Package net.i2p.data

Class SigningPrivateKey

  • All Implemented Interfaces:
    Destroyable, DataStructure
    Direct Known Subclasses:
    RSASigningPrivateCrtKey
    public class SigningPrivateKey
extends SimpleDataStructure
implements Destroyable
    Defines the SigningPrivateKey as defined by the I2P data structure spec. A signing private key is by default a 20 byte Integer. The private key represents only the exponent, not the primes, which are constant and defined in the crypto spec. This key varies from the PrivateKey in its usage (signing, not decrypting) As of release 0.9.8, keys of arbitrary length and type are supported. See SigType.
    Author:
    jrandom

    • Field Detail

      • KEYSIZE_BYTES

        public static final int KEYSIZE_BYTES

    • Constructor Detail

      • SigningPrivateKey

        public SigningPrivateKey()

      • SigningPrivateKey

        public SigningPrivateKey​(SigType type)
        Since:
        0.9.8

      • SigningPrivateKey

        public SigningPrivateKey​(byte[] data)

      • SigningPrivateKey

        public SigningPrivateKey​(SigType type,
                         byte[] data)
        Since:
        0.9.8

      • SigningPrivateKey

        public SigningPrivateKey​(String base64Data)
                  throws DataFormatException
        constructs from base64
        Parameters:
        base64Data - a string of base64 data (the output of .toBase64() called on a prior instance of SigningPrivateKey
        Throws:
        DataFormatException

    • Method Detail

      • getType

        public SigType getType()
        Since:
        0.9.8

      • toPublic

        public SigningPublicKey toPublic()
        Converts this signing private key to its public equivalent. As of 0.9.16, supports all key types.
        Returns:
        a SigningPublicKey object derived from this private key
        Throws:
        IllegalArgumentException - on bad key or unknown or unsupported type

      • isOffline

        public boolean isOffline()
        Constant time
        Returns:
        true if all zeros
        Since:
        0.9.39 moved from PrivateKeyFile

      • destroy

        public void destroy()
        javax.security.auth.Destroyable interface
        Specified by:
        destroy in interface Destroyable
        Since:
        0.9.40

      • isDestroyed

        public boolean isDestroyed()
        javax.security.auth.Destroyable interface
        Specified by:
        isDestroyed in interface Destroyable
        Since:
        0.9.40

      • hashCode

        public int hashCode()
        Description copied from class: SimpleDataStructure
        We assume the data has enough randomness in it, so use the first 4 bytes for speed. If this is not the case, override in the extending class.
        Overrides:
        hashCode in class SimpleDataStructure
        Since:
        0.9.17

      • equals

        public boolean equals​(Object obj)
        Description copied from class: SimpleDataStructure
        Warning - this returns true for two different classes with the same size and same data, e.g. SessionKey and SessionTag, but you wouldn't put them in the same Set, would you?
        Overrides:
        equals in class SimpleDataStructure
        Since:
        0.9.17