Archive for digital signature

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Witness Signatures Add Authenticity

Part of the Apple/FBI court case involves how software updates are protected with digital signatures. The key ensures that the update comes from Apple and therefore has a level of trust associated with the history of the company. The government is not asking Apple to turn over the signing key and Apple is not likely […]

Journal Signatures Use Merkle Trees of Hashes

In the world of business transactions, there is a constant need to maintain logs or journals of transaction history. These journals need to be able to be validated for their integrity over time and they often need to be publicly available. Here are some examples of common transaction journals: Monthly bank statement for checking or […]