Method for transmission of secure messages in a telecommunications network
First Claim
1. A method for transmitting in encrypted form, from a sender to a receiver, an initially unencrypted message so as to enable, through encryption, verification of authenticity of the sender and of integrity of contents of the message, comprising the steps of:
- dividing the unencrypted message to be transmitted into a data section containing the contents of the unencrypted message and a header section;
generating a check element from the contents of the message to be transmitted;
appending the generated check element to the end of the data section;
adding sender identification data to the header section; and
at least one of encrypting and signing of the data section using an encryption method to enable reliable identification of the sender and the receiver of the encrypted message.
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Abstract
The inventive method enables the signing and/or encrypting of a message to be transmitted from a sending party to a receiving party over a telecommunication network with the ability to ascertain from the message the identity of the sender and the integrity of the message contents. The message for transmission is divided into at least a header section, to which a sender identification is added, and a data section, to which a check element generated from the contents of the message is appended. The data section of the message is then signed and/or encrypted so as to permit the receiver to reliably identify the identity of the sender. Use of the check element additionally permits confirmation that the message contents have not been unintendedly modified or corrupted and that the message has been decrypted using the correct decryption key.
81 Citations
18 Claims
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1. A method for transmitting in encrypted form, from a sender to a receiver, an initially unencrypted message so as to enable, through encryption, verification of authenticity of the sender and of integrity of contents of the message, comprising the steps of:
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dividing the unencrypted message to be transmitted into a data section containing the contents of the unencrypted message and a header section;
generating a check element from the contents of the message to be transmitted;
appending the generated check element to the end of the data section;
adding sender identification data to the header section; and
at least one of encrypting and signing of the data section using an encryption method to enable reliable identification of the sender and the receiver of the encrypted message. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification