It cannot be forged, assuming the private key is kept secret. Its authenticity can be verified by a computation that uses the public key corresponding to the private key used to generate the signature.
Similar to a handwritten signature, a digital signature has many useful characteristics: (Technically, any zip file can also be considered a JAR file, although when created by the jar command or processed by the jarsigner command, JAR files also contain a META-INF/MANIFEST.MF file.)Ī digital signature is a string of bits that is computed from some data (the data being signed) and the private key of an entity (a person, company, and so on). A tool named jar enables developers to produce JAR files. The JAR feature enables the packaging of class files, images, sounds, and other digital data in a single file for faster and easier distribution.
To verify the signatures and integrity of signed JAR files.