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Add implementation of the Argon2 password hash.

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This is going to be used in the new version of the PPK file format. It
was the winner of the Password Hashing Context, which I think makes it
a reasonable choice.

Argon2 comes in three flavours: one with no data dependency in its
memory addressing, one with _deliberate_ data dependency (intended to
serialise computation, to hinder parallel brute-forcing), and a hybrid
form that starts off data-independent and then switches over to the
dependent version once the sensitive input data has been adequately
mixed around. I test all three in the test suite; the side-channel
tester can only expect Argon2i to pass; and, following the spec's
recommendation, I'll be using Argon2id for the actual key file
encryption.
This commit is contained in:
Simon Tatham
2021-02-13 17:30:12 +00:00
parent 5c8f3bf924
commit 0faeb82ccd
8 changed files with 882 additions and 2 deletions
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6
testcrypt.h
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@ -261,6 +261,12 @@ FUNC5(int, rsa1_load_s, val_string_binarysource, val_rsa, out_opt_val_string_asc
FUNC3(val_string, ppk_save_sb, val_key, opt_val_string_asciz, opt_val_string_asciz)
FUNC3(val_string, rsa1_save_sb, val_rsa, opt_val_string_asciz, opt_val_string_asciz)
/*
* Password hashing.
*/
FUNC9(val_string, argon2, argon2flavour, uint, uint, uint, uint, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
FUNC2(val_string, argon2_long_hash, uint, val_string_ptrlen)
/*
* Key generation functions.
*/