org.xlattice
Interface PublicKey
public interface PublicKey
That part of a public key cryptography key which is not secret.
In public key cryptography, there is a public key and at least
one private key. The public key is often published or otherwise
made generally available. The private key(s) is or are kept
secret.
If the key set is used for encryption, either key may be used for
encryption. If the public key is used, the result is a document
which can be read only by whoever has the private key. If the
private key is used for encryption, anyone may decrypt the result
using the public key and at the same time they will verify that
the document was encrypted by whoever had the secret part of the key.
If the key set is used for verification, then the private key is
used to sign a hash of the document being signed. Anyone can then
verify both the integrity and authenticity of the document by first
taking a hash (such as an SHA-1 digest) of the document, then
decrypting the digital signature to produce the original hash. If
the two hashes are the same, then the document is guaranteed to be
identical to that originally signed and in addition it is certain
that someone holding the private key signed the document.
For RSA in particular, it is known that there is some risk if the
exponent in the public key is small (3 in particular) and it is
suspected that there may be some risk if the same key is used for
both purposes, for encryption/decryption and for digital signatures.
- Author:
- Jim Dixon
equals
boolean equals(java.lang.Object o)
- Overrides:
equals in class java.lang.Object
hashCode
int hashCode()
- Overrides:
hashCode in class java.lang.Object