Public Key Cryptography: Difference between revisions
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Created page with "Category:Cryptograpy A method to encrypt messages by using asymmetric encryption. For this we need a key-pair, a private an a public key. Both keys are unique. Any privat..." |
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For this we need a key-pair, a private an a public key. Both keys are unique. Any private key can have only 1 public key and any public key can only be derived from 1 private key. You can not derive the private key from the public key. | For this we need a key-pair, a private an a public key. Both keys are unique. Any private key can have only 1 public key and any public key can only be derived from 1 private key. You can not derive the private key from the public key. | ||
A private key uniquely identifies an entity (person or computer) it should be kept private by that entity. Public keys can be shared in public enabling these use cases: | A private key uniquely identifies an entity (person or computer), it should be kept private by that entity. Public keys can be shared in public enabling these use cases: | ||
* Messages encrypted with the public key can only be decoded using the private key. | * Messages encrypted with the public key can only be decoded using the private key. | ||
* Messages signed with the private key can only be decoded using the public key. A message signed with a private key can only be created by the owner of | * Messages signed with the private key can only be decoded using the public key. A message signed with a private key can only be created by the owner of that private key. | ||
Latest revision as of 13:44, 25 May 2021
A method to encrypt messages by using asymmetric encryption.
For this we need a key-pair, a private an a public key. Both keys are unique. Any private key can have only 1 public key and any public key can only be derived from 1 private key. You can not derive the private key from the public key.
A private key uniquely identifies an entity (person or computer), it should be kept private by that entity. Public keys can be shared in public enabling these use cases:
- Messages encrypted with the public key can only be decoded using the private key.
- Messages signed with the private key can only be decoded using the public key. A message signed with a private key can only be created by the owner of that private key.