Reference number
ISO/IEC 18033-2:2006
© ISO 2024
International Standard
ISO/IEC 18033-2:2006
Information technology — Security techniques — Encryption algorithms — Part 2: Asymmetric ciphers
Edition 1
2006-05
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Published (Edition 1, 2006)
This publication was last reviewed and confirmed in 2024. Therefore this version remains current.
This standard has 1 amendment.

ISO/IEC 18033-2:2006

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Format
CHF 216
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Abstract

ISO/IEC 18033-2:2006 specifies encryption systems (ciphers) for the purpose of data confidentiality. The primary purpose of encryption (or encipherment) techniques is to protect the confidentiality of stored or transmitted data. An encryption algorithm is applied to data (often called plaintext or cleartext) to yield encrypted data (or ciphertext); this process is known as encryption. The encryption algorithm should be designed so that the ciphertext yields no information about the plaintext except, perhaps, its length. Associated with every encryption algorithm is a corresponding decryption algorithm, which transforms ciphertext back into its original plaintext.

An asymmetric, i.e. public-key, encryption scheme allows a sender to use a recipient's public key to transmit an encryption of a message to the receiver, who can use his secret key to decrypt the given ciphertext, thereby obtaining the original message.

Such a scheme should be secure in the sense that no information about the message should be leaked to a (resource-bounded) attacker, even if that attacker mounts a so-called 'chosen ciphertext' attack, in which he may obtain decryptions of other ciphertexts. This is the strongest type of attack that has been proposed for a public-key encryption scheme.

ISO/IEC 18033-2:2006 specifies the functional interface of such a scheme, and in addition specifies a number of particular schemes that appear to be secure against chosen ciphertext attack. The different schemes offer different trade-offs between security properties and efficiency.

General information

  • Status
     : Published
    Publication date
     : 2006-05
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 125
  • Technical Committee :
    ISO/IEC JTC 1/SC 27
    ICS :
    35.030 
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 Amendments

Amendments are issued when it is found that new material may need to be added to an existing standardization document. They may also include editorial or technical corrections to be applied to the existing document.

Amendment 1

FACE

Edition 2017

Language
Format
CHF 18
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Life cycle

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