mirror of https://github.com/laurent22/joplin.git
23 lines
894 B
Markdown
23 lines
894 B
Markdown
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# Encryption
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Encrypted data is encoded to ASCII because encryption/decryption functions in React Native can only deal with strings. So for compatibility with all the apps we need to use the lowest common denominator.
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## Encrypted file format
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### Header
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Name | Size
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---------------------------------------------
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Version number | 2 chars (Hexa string)
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Encryption method | 2 chars (Hexa string)
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See lib/services/EncryptionService.js for the list of available encryption methods.
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### Data
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The data is encoded in one or more chuncks for performance reasons. That way it is possible to take a block of data from one file and encrypt it to another block in another file. Encrypting/decrypting the whole file in one go would not work (on mobile especially).
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Name | Size
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-------------------------------------
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Length | 6 chars (Hexa string)
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Data | ("Length" bytes)
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