media: SimpleX logos (#5577)

* media: SimpleX logos

* typo

blog/20240314-simplex-chat-v5-6-quantum-resistance-signal-double-ratchet-algorithm.md

@@ -164,7 +164,7 @@ The main objective here is to establish the framework for comparing the security
 <sup>2</sup> Post-quantum cryptography is available in beta version, as opt-in only for direct conversations. See below how it will be rolled-out further.
 
 Some columns are marked with a yellow checkmark:
-- when messages are padded, but not to a fixed size.
+- when messages are padded, but not to a fixed size (Briar pads messages to the size rounded up to 1024 bytes, Signal - to 160 bytes).
 - when repudiation does not include client-server connection. In case of Cwtch it appears that the presence of cryptographic signatures compromises repudiation (deniability), but it needs to be clarified.
 - when 2-factor key exchange is optional (via security code verification).
 - when post-quantum cryptography is only added to the initial key agreement and does not protect break-in recovery.

media-logos/README.md

@@ -0,0 +1,5 @@
+# SimpleX logos
+
+Please use these logos in your publications about SimpleX Chat.
+
+You can also use app screenshots and diagrams from our [blog posts](../blog/README.md) – please reference them.

media-logos/simplex-symbol-dark.svg

@@ -0,0 +1,10 @@
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media-logos/simplex-symbol-light.svg

@@ -0,0 +1,15 @@
+<svg width="34" height="34" viewBox="0 0 34 34" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_14_10)">
+<path fill-rule="evenodd" clip-rule="evenodd" d="M3.02972 8.59396L8.62219 14.186L14.3703 8.43848L17.1668 11.2346L11.4182 16.982L17.0112 22.5742L14.1371 25.448L8.5441 19.8557L2.79651 25.6035L0 22.8074L5.74813 17.0597L0.155656 11.4678L3.02972 8.59396Z" fill="#023789"/>
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