Interface Signature

All Known Implementing Classes:
AbstractSignature, AbstractSignatureDSA, SignatureDSA, SignatureECDSA, SignatureEdDSA, SignatureRSA

public interface Signature
Signature interface for SSH used to sign or verify data. Usually wraps a javax.crypto.Signature object.
  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    encode(byte[] signature)
    Encode the signature as blog
     
    void
    Initialize this signature with the given private key for signing.
    void
    Initialize this signature with the given public key for signature verification.
    byte[]
    Compute the signature.
    void
    update(byte[] H)
    Convenience method, same as calling update(byte[], int, int) with offset as 0 and H.length.
    void
    update(byte[] H, int off, int len)
    Update the computed signature with the given data.
    boolean
    verify(byte[] sig)
    Verify against the given signature.
  • Method Details

    • getSignatureName

      String getSignatureName()
    • initVerify

      void initVerify(PublicKey pubkey)
      Initialize this signature with the given public key for signature verification. Note that subsequent calls to either initVerify(PublicKey) or initSign(PrivateKey) will overwrite prior initialization.
      Parameters:
      pubkey - the public key to use for signature verification
    • initSign

      void initSign(PrivateKey prvkey)
      Initialize this signature with the given private key for signing. Note that subsequent calls to either initVerify(PublicKey) or initSign(PrivateKey) will overwrite prior initialization.
      Parameters:
      prvkey - the private key to use for signing
    • update

      void update(byte[] H)
      Convenience method, same as calling update(byte[], int, int) with offset as 0 and H.length.
      Parameters:
      H - the byte-array to update with
    • update

      void update(byte[] H, int off, int len)
      Update the computed signature with the given data.
      Parameters:
      H - byte-array to update with
      off - offset within the array
      len - length until which to compute
    • sign

      byte[] sign()
      Compute the signature.
      Returns:
      the computed signature
    • encode

      byte[] encode(byte[] signature)
      Encode the signature as blog
      Parameters:
      signature - the signature to encode
      Returns:
      Encoded signature
    • verify

      boolean verify(byte[] sig)
      Verify against the given signature.
      Parameters:
      sig - the signature to verify against
      Returns:
      true on successful verification, false on failure