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Web Encrypt

Index
Cryptography
- Basic
- Books
- Basics
- Alice and Bob
- Crypto War
- Cryptography
- Strength
- Random
- RSA
- SM2
- SM9
- ECC
- Curve25519
- DSA
- DES
- AES
- Mode of Operation
- Hash
- Hash Securitry
- SHA1
- Tokenization
- Cryptanalytics
- Ring Signature
- Blind Signature
- Group Signature
- Aggregate Signature
- Hash-based Signature
- Secret Sharing
- Diffie–Hellman
- Twisted Edwards Curve
- Identity-based Encryption
- Format-Preserving Encryption
- Threshold Cryptography
- White-Box Cryptography
- Homomorphic Encryption
- Zero-Knowledge Proofs
- Secure Multi-Party Computation
- Deterministic and Order-preserving Encryption
- Crypto-shredding
- Birthday-paradox
- Cryptography Software
- Cryptol
- SageMath
- Other
- Others
Standard
- Basic
- ASN.1
- DRM
- FIDO
- TOTP
- HPKP
- ACME
- LURK
- KMIP
- PKCE
- DNSSEC
- DNS over TLS/HTTPS
- Time-Stamp Protocol
- Web and Identity
- OpenID
- Web Cryptography
- Web Authentication
- Credential Management
- Unified Identity Authentication
- Decentralized Identifiers
- CBOR Object Signing and Encryption
- Javascript Object Signing and Encryption
- Application
- Tor
- Messaging Layer Security (MLS)
- Off-the-record Messaging (OTR)
- OMEMO
- SSL/TLS
- S/MIME
- OpenPGP
- Autocrypt
- Hardware
- Root of Trust
- Secure Element
- Hardware Security Module
- Trusted Platform Module
- Trusted Execution Environment
- Programming Language
- Java Cryptography Architecture
- X509
- FIPS 140
- ANSI X9.F.1
- Standards
- Others
- saltpack
- OpenPubkey
- Message Crypto
- Remote Key Attestation
Cheat Sheet
Organization
Tool
- Networking
- Nmap
- OpenSSH
- Supply Chain
- Sigstore
- Smart Card
- OpenSC
- Sign & Encrypt
- Minisign
- GnuPG
- PGPdump
- File Encryption
- age
- encpipe
- git-crypt
- miniLock
- TrueCrypt
- Cryptomator
- Database Encryption
- Acra
- Communication
- Signal
- Session
- Delta Chat
- K-9 Mail
- Key Management
- Keytool
- SoftHSM
- Pass
- Keybase
- Bitwarden
- KeePassX
- OpenKeychain
- SSL/TLS
- Rustls
- OpenSSL
- Certbot
- Tools
Online Tool
Misc
- Articles
- Articles
- Black Tech
- DNSChain
- Blockchain
- Post-Quantum
- Anti-Ransomware
- The Crypto Anarchist Manifesto
- 10 Cryptography Mistakes Amateurs Make
- 6 encryption mistakes that lead to data breaches
- Others
- 国密
- Links
- Problems
- Cryptographer
- Library
- Resource
- Glossary

K-9 Mail

https://k9mail.app/
https://github.com/k9mail

K-9 Mail does not have built-in encryption capabilities. Instead, it uses an external Android application called OpenKeychain.

Hatter Jiang, WebEncrypt.Org, My key: https://hatter.in/key, leave message here