Abstract: A system for conducting a financial transaction in e-commerce on the internet includes objects prepared by a seller and a buyer. The seller's object includes a clear text header file (advertisement), an encrypted overhead file which contains verification data pertaining to the financial transaction, and an encrypted content file containing the subject matter for sale by the seller. With a purchase solicitation from the buyer, an overhead key can be used by a transaction agency to ensure there is a compliance between the purchase solicitation and the verification data of the overhead (from seller's object). Next a revelation key is provided to give the buyer access to the content when such compliance has been ensured.

Abstract: A system for conducting a financial transaction in e-commerce on the internet includes objects prepared by a seller and a buyer. The seller's object includes a clear text header file (advertisement), an encrypted overhead file which contains verification data pertaining to the financial transaction, and an encrypted content file containing the subject matter for sale by the seller. With a purchase solicitation from the buyer, an overhead key can be used by a transaction agency to ensure there is a compliance between the purchase solicitation and the verification data of the overhead (from seller's object). Next a revelation key is provided to give the buyer access to the content when such compliance has been ensured.

Abstract: A system for conducting a financial transaction in e-commerce on the internet includes objects prepared by a seller and a buyer. The seller's object includes a clear text header file (advertisement), an encrypted overhead file which contains verification data pertaining to the financial transaction, and an encrypted content file containing the subject matter for sale by the seller. With a purchase solicitation from the buyer, an overhead key can be used by a transaction agency to ensure there is a compliance between the purchase solicitation and the verification data of the overhead (from seller's object). Next a revelation key is provided to give the buyer access to the content when such compliance has been ensured.

Abstract: A system for conducting a financial transaction in e-commerce on the internet includes objects prepared by a seller and a buyer. The seller's object includes a clear text header file (advertisement), an encrypted overhead file which contains verification data pertaining to the financial transaction, and an encrypted content file containing the subject matter for sale by the seller. With a purchase solicitation from the buyer, an overhead key can be used by a transaction agency to ensure there is a compliance between the purchase solicitation and the verification data of the overhead (from seller's object). Next a revelation key is provided to give the buyer access to the content when such compliance has been ensured.

Abstract: A system and method for transferring an encrypted file over the Internet involves a seller, a buyer, and a transaction agent. The file has a first part (administrative information) and a second part (subject-matter content) that are respectively encrypted with first and second encryption/decryption non-public keys. In operation, the appropriate key is released by the seller or the transaction agent for respective use by either the transaction agent or the buyer, to decrypt and reveal the second part of the file to the buyer.

Abstract: A system and method for transferring an encrypted file over the Internet involves a seller, a buyer, and a transaction agent. First, the seller creates a file for publication on the Internet. This file has, at least, an overhead part that is encrypted with a public key provided by the transaction agent, and it has a content part that is encrypted with a private key provided by the seller. In operation, the buyer selects the desired file from the Internet and sends its overhead part to the transaction agent for decryption. The decryption is then done using the public key to ascertain the private key. Subsequently, the private key is used, either by the transaction agent or by the buyer, to decrypt and reveal the content part of the file from the Internet for use by the buyer.

Abstract: A system for conducting a financial transaction in e-commerce on the internet includes objects prepared by a seller and a buyer. The seller's object includes a clear text header file (advertisement), an encrypted overhead file which contains verification data pertaining to the financial transaction, and an encrypted content file containing the subject matter for sale by the seller. With a purchase solicitation from the buyer, an overhead key can be used by a transaction agency to ensure there is a compliance between the purchase solicitation and the verification data of the overhead (from seller's object). Next a revelation key is provided to give the buyer access to the content when such compliance has been ensured.

Abstract: A method for verifying over a network that a user attempting to sign in and access an account (a sign-in user) is the same individual that originally set up the account (i.e. the setup user) includes the step of receiving machine specific information during account setup. The website then encrypts the received machine specific information and sends the encryption back to the setup user's computer for incorporation in the cookie file located on the computer's hard drive. When a user attempts to sign in to access the account, the website acquires the cookie file located on the sign-in user's computer and machine specific information about the sign-in user's computer. The cookie is decrypted to reveal the machine specific information acquired during setup, and this information is compared to the machine specific information acquired from the sign-in user's computer to generate a probability that the sign-in user is the setup user.

Abstract: A system and method for transferring an encrypted file over the Internet involves a seller, a buyer, and a transaction agent. The file has a first part (administrative information) and a second part (subject-matter content) that are respectively encrypted with first and second encryption/decryption non-public keys. In operation, the appropriate key is released by the seller or the transaction agent for respective use by either the transaction agent or the buyer, to decrypt and reveal the second part of the file to the buyer.

Abstract: A system and method for transferring an encrypted file over the Internet involves a seller, a buyer, and a transaction agent. First, the seller creates a file for publication on the Internet. This file has, at least, an overhead part that is encrypted with a public key provided by the transaction agent, and it has a content part that is encrypted with a private key provided by the seller. In operation, the buyer selects the desired file from the Internet and sends its overhead part to the transaction agent for decryption. The decryption is then done using the public key to ascertain the private key. Subsequently, the private key is used, either by the transaction agent or by the buyer, to decrypt and reveal the content part of the file from the Internet for use by the buyer.