7 Introduced by David Chaum, blind signatures enable a document become finalized without exposing its articles. The result is analogous to putting a document and a sheet of carbon paper in a envelope. If someone signs the surface of this envelope, they additionally signal the document in the within the envelope. The signature continues to be connected to the document, even when its taken from the envelope. Blind signatures can be used in electronic re re re payment systems allowing banking institutions to signal and circulate electronic records without maintaining an archive of which notes a person happens to be offered. Somebody who desires to withdraw funds from a bank-account must make a electronic note having a secret serial quantity and submit it to your bank. The lender withdraws the income through the person’s account and indications the note. 继续阅读The root technology behind some electronic cash systems is a unique form of digital signature known as a blind signature.