wok annotate perl-digest-hmac/description.txt @ rev 25630
libssh, openssh, paramiko, proftpd, putty: CVE-2023-48795 fix, waiting for dropbear and tinyssh released.
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
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| date | Fri Dec 22 14:30:01 2023 +0000 (11 months ago) |
| parents | |
| children |
| rev | line source |
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| Hans-G?nter@24200 | 1 HMAC is used for message integrity checks between two parties |
| Hans-G?nter@24200 | 2 that share a secret key, and works in combination with some |
| Hans-G?nter@24200 | 3 other Digest algorithm, usually MD5 or SHA-1. |
| Hans-G?nter@24200 | 4 The HMAC mechanism is described in RFC 2104. |
| Hans-G?nter@24200 | 5 |
| Hans-G?nter@24200 | 6 HMAC follow the common Digest:: interface, but the constructor |
| Hans-G?nter@24200 | 7 takes the secret key and the name of some other simple Digest:: |
| Hans-G?nter@24200 | 8 as argument. |
| Hans-G?nter@24200 | 9 |
| Hans-G?nter@24200 | 10 The hmac() and hmac_hex() functions and the Digest::HMAC->new() |
| Hans-G?nter@24200 | 11 constructor takes an optional $blocksize argument as well. |
| Hans-G?nter@24200 | 12 The HMAC algorithm assumes the digester to hash by iterating a |
| Hans-G?nter@24200 | 13 basic compression function on blocks of data and the $blocksize |
| Hans-G?nter@24200 | 14 should match the byte-length of such blocks. |
| Hans-G?nter@24200 | 15 |
| Hans-G?nter@24200 | 16 The default $blocksize is 64 which is suitable for the MD5 and |
| Hans-G?nter@24200 | 17 SHA-1 digest functions. |
| Hans-G?nter@24200 | 18 For stronger algorithms the blocksize probably needs to be |
| Hans-G?nter@24200 | 19 increased. |