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Updated Protected notes (markdown)

zadam 2019-01-13 18:13:41 +01:00
parent 219e795ff8
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Protected notes.md → Protected-notes.md

@ -44,4 +44,4 @@ Not encrypted:
* data encryption key is encrypted with [AES-128](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) with random [IV](https://en.wikipedia.org/wiki/Initialization_vector) * data encryption key is encrypted with [AES-128](https://en.wikipedia.org/wiki/Advanced_Encryption_Standard) with random [IV](https://en.wikipedia.org/wiki/Initialization_vector)
* data encryption key is random key generated at the time of [[document|Document]] initialization and is constant over the lifetime of the document. If we change password, we re-encrypt only this key. * data encryption key is random key generated at the time of [[document|Document]] initialization and is constant over the lifetime of the document. If we change password, we re-encrypt only this key.
5. We use data encryption key to decrypt actual data - note title and content. 5. We use data encryption key to decrypt actual data - note title and content.
* encryption used is again AES-128 with [CBC chaining](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation). IV is primary key (noteId for notes and noteHistoryId for history items) * encryption used is again AES-128 with [CBC chaining](https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation). Unique IV is generated with every encryption operation and stored together with the cipher text.