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Authentication |
The process of verifying the claimed identity of an individual. |
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Certificate |
Data record that provides the public key of an individual, together with some other information related to the name of the individual and the certification authority that issued the certificate. |
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Certification |
Trusted Third Party that creates, assigns and distributes certificates. |
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Ciphertext |
The output of an encryption function. Encryption transforms plaintext into ciphertext |
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Confidentiality |
The property that information is not made available or disclosed to unauthorised parties. |
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DES |
Secret key cryptosystem (Data Encryption Standard). |
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Digital Signature |
Data appended to, or a cryptographic transformation of, a data unit that allows a recipient of the data unit to prove the source and integrity of the data unit and to protect against forgery (eg by the recipient). |
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Integrity |
The property of ensuring that data is transmitted from a source to a destination, or stored, without undetected alteration. |
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Key |
A sequence of symbols that controls the operations of encipherment and decipherment. |
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Key Management |
The generation, storage, distribution, deletion, archiving and application of keys securely. |
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Key Pair |
A set of a public and a private key that belong together. |
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Non-repudiation |
The property of a receiver being able to prove that the sender of some data did in fact send the data even though the sender might later desire to deny ever having sent it. |
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Plaintext |
The input of an encryption function or the output of a decryption function. Decryption transforms ciphertext into plaintext. |
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Private Key |
Cryptographic key used in public key cryptography to sign and/or decrypt information. |
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Public Key |
The key used in an asymmetric cryptosystem that is publicly available. |
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RC2, RC4 and RC5 |
Secret key cryptosystems. |
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RSA |
Public key cryptosystem (Rivest, Shamir and Adleman). |
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Secret key |
The key used in a symmetric cryptosystem that is shared between the communicating parties. |
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Trusted Third Party |
A security authority or its agent, trusted by other entities with respect to security-related activities. |