Symmetric Encryption (Global)
High-quality technical overview of Symmetric Encryption in the context of blockchain security.
Asymmetric [encryption](/de/terms/asymmetric-encryption) is the cornerstone of blockchain technology. Unlike symmetric encryption (where the same key is used to lock and unlock), asymmetric encryption uses two related but different keys. The Public Key acts like your mailbox address (anyone can see it and send you mail), while the Private Key is the physical key to the mailbox that only you possess. This allows for secure communication and digital signatures without ever having to share a master password.
graph LR
Center["Symmetric Encryption (Global)"]:::main
Rel_asymmetric_encryption["asymmetric-encryption"]:::related -.-> Center
click Rel_asymmetric_encryption "/terms/asymmetric-encryption"
Rel_homomorphic_encryption["homomorphic-encryption"]:::related -.-> Center
click Rel_homomorphic_encryption "/terms/homomorphic-encryption"
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🧠 Wissenstest
🧒 Erkläre es wie einem 5-Jährigen
🔐 Es ist wie ein Vorhängeschloss, das man offen verschickt : Jeder kann es zudrücken, aber nur du hast den Schlüssel, um es wieder zu öffnen.
🤓 Expert Deep Dive
Die Sicherheit beruht auf der Komplexität mathematischer Probleme wie der Primfaktorzerlegung oder diskreten Logarithmen. ECC (Elliptic Curve Cryptography) ist der Standard für Web3.