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mukul975
41 lines
1.4 KiB
Markdown
41 lines
1.4 KiB
Markdown
# Standards and References - End-to-End Encryption for Messaging
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## Signal Protocol Specifications
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### The Double Ratchet Algorithm
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- **URL**: https://signal.org/docs/specifications/doubleratchet/
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- **Description**: Core key management algorithm for E2EE messaging
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### The X3DH Key Agreement Protocol
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- **URL**: https://signal.org/docs/specifications/x3dh/
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- **Description**: Initial key exchange using Extended Triple Diffie-Hellman
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### The Sesame Algorithm
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- **URL**: https://signal.org/docs/specifications/sesame/
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- **Description**: Multi-device session management
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## Cryptographic Standards
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### RFC 7748 - Elliptic Curves for Security (X25519)
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- **URL**: https://www.rfc-editor.org/rfc/rfc7748
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- **Description**: X25519 Diffie-Hellman key exchange
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### RFC 5869 - HKDF (HMAC-based Key Derivation Function)
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- **URL**: https://www.rfc-editor.org/rfc/rfc5869
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- **Description**: Key derivation for chain key updates
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### RFC 8032 - Edwards-Curve Digital Signature Algorithm (Ed25519)
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- **URL**: https://www.rfc-editor.org/rfc/rfc8032
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- **Description**: Identity key signatures
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### NIST SP 800-38D - AES-GCM
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- **URL**: https://csrc.nist.gov/publications/detail/sp/800-38d/final
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- **Description**: Authenticated encryption for messages
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## Python Libraries
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### cryptography
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- **X25519**: `cryptography.hazmat.primitives.asymmetric.x25519`
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- **HKDF**: `cryptography.hazmat.primitives.kdf.hkdf`
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- **AES-GCM**: `cryptography.hazmat.primitives.ciphers.aead.AESGCM`
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