Azure diaries: can’t access KeyVault

Context: as a tenant administrator you can't inspect KeyVault contents created by other people ("you are unauthorized to view these contents"). Solution: assign yourself appropriate permissions like this: Locate the KeyVault in the Azure portal: go to "Access policies"click "+Add Access Policy"Key permissions: everything under "Key Management Operations" and "Cryptographic Operations"Accordingly for key and certificate … Continue reading Azure diaries: can’t access KeyVault

Secure messaging in the browser

By observing news and public discussions I feel that there is a growing awareness of data privacy and an increasing demand for secure person-to-person communication. In order to address my communication needs, I plugged together a few Javascript libraries and started the Webencryption [1] project on Github. What is Webencryption? Webencryption is a rather crude … Continue reading Secure messaging in the browser

RSA is partially cryptographically homomorphic

Homomorphic cryptography [1], should it ever become available as a product, will have an intriguing property: computers will be able to operate on encrypted data without either having to- or being able to decrypt it. Competitive or regulatory pressure leads many organisations to distrust public (or private) clouds with their data and algorithms, so they … Continue reading RSA is partially cryptographically homomorphic