Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Patent
1996-11-27
2000-02-01
Swann, Tod R.
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
713180, H04L 932
Patent
active
060214910
ABSTRACT:
Methods, apparatuses and products are provided for verifying the authenticity of data within one or more data files. Each data file is provided with an identifier, such as a one-way hash function or cyclic redundancy checksum. A signature file, that includes the identifiers for one or more data files, is provided with a digital signature created with a signature algorithm. The data file(s) and signature file are then transferred, or otherwise provided to a user. The user verifies the digital signature in the signature file using a signature verifying algorithm. Once verified as being authentic, the signature file can be used to verify each of the data files. Verification of the data files can be accomplished by comparing the identifier for each data file with the corresponding identifier in the signature file. If the identifiers in the data and signature files match, then the data file can be marked as authentic. If the identifiers do not match then the data file can be rejected or otherwise dealt with accordingly.
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Jack Todd
Sun Microsystems Inc.
Swann Tod R.
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