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Default branch: MAIN
Current tag: netbsd-3-base
Revision 1.5 / (download) - annotate - [select for diffs], Fri Jul 2 00:05:23 2004 UTC (14 years, 10 months ago) by sjg
CVS Tags: netbsd-3-base
Branch point for: netbsd-3
Changes since 1.4: +2 -1 lines
Diff to previous 1.4 (colored)
Add support for SHA1 hashed passwords. The algorithm used is essentially PBKDF1 from RFC 2898 but using hmac_sha1 rather than SHA1 directly (suggested by email@example.com). * The format of the encrypted password is: * $<tag>$<iterations>$<salt>$<digest> * * where: * <tag> is "sha1" * <iterations> is an unsigned int identifying how many rounds * have been applied to <digest>. The number * should vary slightly for each password to make * it harder to generate a dictionary of * pre-computed hashes. See crypt_sha1_iterations. * <salt> up to 64 bytes of random data, 8 bytes is * currently considered more than enough. * <digest> the hashed password. hmac.c implementes HMAC as defined in RFC 2104 and includes a unit test for both hmac_sha1 and hmac_sha1 using a selection of the Known Answer Tests from RFC 2202. It is worth noting that to be FIPS compliant the hmac key (password) should be 10-20 chars.
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