暗号鍵

1. Origins, structure, and basic meaning

• Structure: 暗号鍵 (あんごうかぎ) joins cipher 暗号 with key 鍵 to name a cryptographic key.
• Basic usage: 暗号鍵 is a key used to encrypt or decrypt data.

2. Common pitfalls and similar expressions

• Cryptographic versus physical key
  • Despite the character 鍵, it should not be interpreted as a physical key for a door or lock.