pgpfan:mdc
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| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision | ||
| pgpfan:mdc [2022/05/28 20:14] – Typo b.walzer | pgpfan:mdc [2022/05/28 20:54] – [A Less Intuitive, More Technical Explanation] Awkward phrasing b.walzer | ||
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| =====A Less Intuitive, More Technical Explanation===== | =====A Less Intuitive, More Technical Explanation===== | ||
| - | OCFB-MDC is a case of hash then encrypt. The cipher block mode used is the modified version of cipher feedback used by OpenPGP (OCFB). The modification is | + | OCFB-MDC is a case of hash then encrypt. The cipher block mode is the modified version of cipher feedback used by OpenPGP (OCFB). The modification is |
| the addition of a prefix block consisting of random data. The traditional CFB initialization vector (IV) is replaced by the encryption of a block of zeros. | the addition of a prefix block consisting of random data. The traditional CFB initialization vector (IV) is replaced by the encryption of a block of zeros. | ||
| This serves to prevent an attacker from being able to get access to either the IV or the plaintext value of the random data prefix block. | This serves to prevent an attacker from being able to get access to either the IV or the plaintext value of the random data prefix block. | ||
pgpfan/mdc.txt · Last modified: 2023/12/11 13:30 by b.walzer