### Bug Fixes

* add explicit default export for browser build to aide backwards compatibility ([7280eae](https://github.com/matrix-org/matrix-encrypt-attachment/commit/7280eae9838c5757deaa08c2a534e7d966cae0e9))

[1.0.3](https://github.com/matrix-org/matrix-encrypt-attachment/compare/v1.0.2...v1.0.3) (2022-04-01)

# Matrix Encrypt Attachment

Encrypt and decrypt attachments in accordance with the [Matrix](https://matrix.org) [Client-Server API spec](https://spec.matrix.org/v1.1/client-server-api/#sending-encrypted-attachments).

Supports browsers using [`WebCryptoAPI`](https://www.w3.org/TR/WebCryptoAPI/) and Node.js via [`crypto`](https://nodejs.org/api/crypto.html).

This project builds on and deprecates [`browser-encrypt-attachment`](https://github.com/matrix-org/browser-encrypt-attachment) to add support for non-browser environments.

## Protocol versions

Previous versions of the protocol are not currently documented in the spec, and are described here for reference:

| Protocol | Description |
| --- | --- |
| v0 | use all 128 bits of the counter |
| v1 | use only 64 bits of the counter |
| v2 (current) | use only 64 bits and also zero out the other half to maximise the space before it wraps |

## Encryption

The library will encrypt to the following protocol versions:

| Protocol | Browser | Node.js |
| --- | --- | --- |
| Encrypt | v2 | v2 |

## Decryption

The library supports decryption of the following protocol versions:

| Protocol | Browser | Node.js |
| --- | --- | --- |
| Decrypt v0 | ✅ | ❌ |
| Decrypt v1 | ✅ | ❌ |
| Decrypt v2 | ✅ | ✅ |


JS/TS library for encrypting and decrypting file attachments in Matrix. 

Meet the Socket Team at BlackHat and DEF CON in Las Vegas, Aug 4-6

matrix-encrypt-attachment

JS/TS library for encrypting and decrypting file attachments in Matrix

matrixdotorg

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matrix-encrypt-attachment

Matrix Encrypt Attachment

Protocol versions

Encryption

Decryption

1.0.3 (2022-04-01)

Bug Fixes

Keywords

Related posts

Protocol	Description
v0	use all 128 bits of the counter
v1	use only 64 bits of the counter
v2 (current)	use only 64 bits and also zero out the other half to maximise the space before it wraps

matrix-encrypt-attachment

Matrix Encrypt Attachment

Protocol versions

Encryption

Decryption

1.0.3 (2022-04-01)

Bug Fixes

Keywords

Related posts

60 Malicious Ruby Gems Used in Targeted Credential Theft Campaign

New CNA Scorecard Tool Ranks CVE Data Quality Across the Ecosystem