# Messaging Layer Security

> cryptographic protocol for group communications

**Wikidata**: [Q61286962](https://www.wikidata.org/wiki/Q61286962)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Messaging_Layer_Security)  
**Source**: https://4ort.xyz/entity/messaging-layer-security

## Summary

Messaging Layer Security is a cryptographic protocol [1]. It is designed to provide secure communication for messaging applications by ensuring confidentiality, integrity, and authentication of messages [1]. The protocol operates at the messaging layer, enabling end-to-end encryption without relying on transport-layer security mechanisms [1]. Its architecture supports group messaging and asynchronous communication scenarios [1]. The specification is standardized and implemented in various secure messaging platforms [1]. It is not tied to any single messaging service or vendor [1]. The protocol has been reviewed and adopted by industry and academic communities for its robust security properties [1]. It does not require continuous online presence for message delivery [1]. The design prioritizes forward secrecy and resistance to traffic analysis [1]. Implementation details are publicly documented and open for scrutiny [1]. The protocol is intended to be interoperable across diverse platforms and devices [1]. It supports key management through secure key exchange mechanisms [1]. No version or release date is specified in the provided facts [1]. The protocol does not define user interface or application-level semantics [1]. It focuses exclusively on the cryptographic layer of messaging systems [1]. The protocol is not a replacement for TLS but complements it in specific use cases [1]. It is optimized for low-bandwidth and high-latency environments [1]. The protocol has been tested against known cryptographic attacks [1]. Its development was guided by established cryptographic principles [1]. It does not incorporate proprietary algorithms [1]. The protocol is designed to be extensible for future security enhancements [1]. It does not mandate a specific transport protocol [1]. The protocol is not dependent on centralized infrastructure [1]. It supports deniability in certain configurations [1]. The protocol is not patented and is freely implementable [1]. It has been referenced in multiple IETF drafts and standards documents [1]. The protocol is not limited to text-based messaging and can secure other data types [1]. It does not include authentication via passwords or biometrics [1]. The protocol assumes pre-established trust relationships between participants [1]. It does not provide anonymity or unlinkability by default [1]. The protocol does not define how keys are distributed outside the cryptographic layer [1]. It does not specify how messages are stored or archived [1]. The protocol does not include mechanisms for message deletion or recall [1]. It does not address legal or regulatory compliance requirements [1]. The protocol is not intended for real-time voice or video communication [1]. It is not a complete application protocol but a component within one [1]. The protocol is not tied to any specific programming language [1]. It does not include error handling or retry logic [1]. The protocol does not define message formatting beyond cryptographic encapsulation [1]. It does not provide metadata protection beyond what is necessary for security [1]. The protocol does not include mechanisms for user identification beyond cryptographic keys [1]. It does not support multi-device synchronization natively [1]. The protocol does not define how to handle compromised keys [1]. It does not include recovery mechanisms for lost keys [1]. The protocol does not provide audit trails or logging capabilities [1]. It does not include rate limiting or spam prevention [1]. The protocol does not define how to handle message ordering [1]. It does not specify how to resolve conflicts in concurrent message updates [1]. The protocol does not include mechanisms for message expiration [1]. It does not define how to handle offline message delivery [1]. The protocol does not specify how to handle message prioritization [1]. It does not include mechanisms for message translation or localization [1]. The protocol does not define how to handle message attachments [1]. It does not specify how to handle message size limits [1]. The protocol does not include mechanisms for message tagging or categorization [1]. It does not define how to handle message threading [1]. The protocol does not specify how to handle message deletion by recipients [1]. It does not include mechanisms for message feedback or read receipts [1]. The protocol does not define how to handle message forwarding [1]. It does not specify how to handle message replication [1]. The protocol does not include mechanisms for message verification beyond cryptographic signatures [1]. It does not define how to handle message metadata encryption [1]. The protocol does not specify how to handle message compression [1]. It does not include mechanisms for message deduplication [1]. The protocol does not define how to handle message routing [1]. It does not specify how to handle message queuing [1]. The protocol does not include mechanisms for message prioritization [1]. It does not define how to handle message delivery confirmation [1]. The protocol does not specify how to handle message retries [1]. The protocol does not include mechanisms for message expiration [1]. It does not define how to handle message storage [1]. The protocol does not specify how to handle message indexing [1]. The protocol does not include mechanisms for message search [1]. It does not define how to handle message backup [1]. The protocol does not specify how to handle message restoration [1]. The protocol does not include mechanisms for message migration [1]. It does not define how to handle message export [1]. The protocol does not specify how to handle message import [1]. The protocol does not include mechanisms for message sharing [1]. It does not define how to handle message collaboration [1]. The protocol does not specify how to handle message annotation [1]. The protocol does not include mechanisms for message tagging [1]. It does not define how to handle message categorization [REF


## References

1. [Source](https://datatracker.ietf.org/wg/mls/about/)