jarsigner Description
The jarsigner utility serves a dual function: it authenticates the signatures and verifies the integrity of signed JAR files while also enabling the signing of Java Archive (JAR) files. A digital signature consists of a sequence of bits derived from the data being signed along with the private key of a specific entity, which could be an individual or a corporation, among others. Much like a handwritten signature, a digital signature possesses several beneficial properties; its authenticity can be confirmed through a calculation that employs the public key linked to the private key used for generating that signature. Furthermore, it is intrinsically tied to the signed data, meaning it cannot validly represent a signature for different data, and any alteration to the signed data renders the signature unverifiable as genuine. This mechanism ensures that it cannot be counterfeited, provided that the private key remains confidential, thereby enhancing security in digital transactions and communications.
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