mirror of
https://git.tartarus.org/simon/putty.git
synced 2025-01-09 17:38:00 +00:00
08d17140a0
This removes both uses of SHA-1 in the file format: it was used as the MAC protecting the key file against tamperproofing, and also used in the key derivation step that converted the user's passphrase to cipher and MAC keys. The MAC is simply upgraded from HMAC-SHA-1 to HMAC-SHA-256; it is otherwise unchanged in how it's applied (in particular, to what data). The key derivation is totally reworked, to be based on Argon2, which I've just added to the code base. This should make stolen encrypted key files more resistant to brute-force attack. Argon2 has assorted configurable parameters for memory and CPU usage; the new key format includes all those parameters. So there's no reason we can't have them under user control, if a user wants to be particularly vigorous or particularly lightweight with their own key files. They could even switch to one of the other flavours of Argon2, if they thought side channels were an especially large or small risk in their particular environment. In this commit I haven't added any UI for controlling that kind of thing, but the PPK loading function is all set up to cope, so that can all be added in a future commit without having to change the file format. While I'm at it, I've also switched the CBC encryption to using a random IV (or rather, one derived from the passphrase along with the cipher and MAC keys). That's more like normal SSH-2 practice.
325 lines
16 KiB
C
325 lines
16 KiB
C
/*
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* mpint.h functions.
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*/
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FUNC1(val_mpint, mp_new, uint)
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FUNC1(void, mp_clear, val_mpint)
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FUNC1(val_mpint, mp_from_bytes_le, val_string_ptrlen)
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FUNC1(val_mpint, mp_from_bytes_be, val_string_ptrlen)
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FUNC1(val_mpint, mp_from_integer, uint)
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FUNC1(val_mpint, mp_from_decimal_pl, val_string_ptrlen)
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FUNC1(val_mpint, mp_from_decimal, val_string_asciz)
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FUNC1(val_mpint, mp_from_hex_pl, val_string_ptrlen)
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FUNC1(val_mpint, mp_from_hex, val_string_asciz)
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FUNC1(val_mpint, mp_copy, val_mpint)
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FUNC1(val_mpint, mp_power_2, uint)
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FUNC2(uint, mp_get_byte, val_mpint, uint)
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FUNC2(uint, mp_get_bit, val_mpint, uint)
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FUNC3(void, mp_set_bit, val_mpint, uint, uint)
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FUNC1(uint, mp_max_bytes, val_mpint)
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FUNC1(uint, mp_max_bits, val_mpint)
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FUNC1(uint, mp_get_nbits, val_mpint)
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FUNC1(val_string_asciz, mp_get_decimal, val_mpint)
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FUNC1(val_string_asciz, mp_get_hex, val_mpint)
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FUNC1(val_string_asciz, mp_get_hex_uppercase, val_mpint)
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FUNC2(uint, mp_cmp_hs, val_mpint, val_mpint)
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FUNC2(uint, mp_cmp_eq, val_mpint, val_mpint)
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FUNC2(uint, mp_hs_integer, val_mpint, uint)
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FUNC2(uint, mp_eq_integer, val_mpint, uint)
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FUNC3(void, mp_min_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_max_into, val_mpint, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_min, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_max, val_mpint, val_mpint)
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FUNC2(void, mp_copy_into, val_mpint, val_mpint)
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FUNC4(void, mp_select_into, val_mpint, val_mpint, val_mpint, uint)
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FUNC3(void, mp_add_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_sub_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_mul_into, val_mpint, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_add, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_sub, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_mul, val_mpint, val_mpint)
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FUNC3(void, mp_and_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_or_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_xor_into, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_bic_into, val_mpint, val_mpint, val_mpint)
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FUNC2(void, mp_copy_integer_into, val_mpint, uint)
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FUNC3(void, mp_add_integer_into, val_mpint, val_mpint, uint)
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FUNC3(void, mp_sub_integer_into, val_mpint, val_mpint, uint)
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FUNC3(void, mp_mul_integer_into, val_mpint, val_mpint, uint)
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FUNC4(void, mp_cond_add_into, val_mpint, val_mpint, val_mpint, uint)
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FUNC4(void, mp_cond_sub_into, val_mpint, val_mpint, val_mpint, uint)
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FUNC3(void, mp_cond_swap, val_mpint, val_mpint, uint)
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FUNC2(void, mp_cond_clear, val_mpint, uint)
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FUNC4(void, mp_divmod_into, val_mpint, val_mpint, opt_val_mpint, opt_val_mpint)
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FUNC2(val_mpint, mp_div, val_mpint, val_mpint)
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FUNC2(val_mpint, mp_mod, val_mpint, val_mpint)
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FUNC3(val_mpint, mp_nthroot, val_mpint, uint, opt_val_mpint)
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FUNC2(void, mp_reduce_mod_2to, val_mpint, uint)
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FUNC2(val_mpint, mp_invert_mod_2to, val_mpint, uint)
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FUNC2(val_mpint, mp_invert, val_mpint, val_mpint)
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FUNC5(void, mp_gcd_into, val_mpint, val_mpint, opt_val_mpint, opt_val_mpint, opt_val_mpint)
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FUNC2(val_mpint, mp_gcd, val_mpint, val_mpint)
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FUNC2(uint, mp_coprime, val_mpint, val_mpint)
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FUNC2(val_modsqrt, modsqrt_new, val_mpint, val_mpint)
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/* The modsqrt functions' 'success' pointer becomes a second return value */
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FUNC3(val_mpint, mp_modsqrt, val_modsqrt, val_mpint, out_uint)
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FUNC1(val_monty, monty_new, val_mpint)
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FUNC1(val_mpint, monty_modulus, val_monty)
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FUNC1(val_mpint, monty_identity, val_monty)
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FUNC3(void, monty_import_into, val_monty, val_mpint, val_mpint)
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FUNC2(val_mpint, monty_import, val_monty, val_mpint)
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FUNC3(void, monty_export_into, val_monty, val_mpint, val_mpint)
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FUNC2(val_mpint, monty_export, val_monty, val_mpint)
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FUNC4(void, monty_mul_into, val_monty, val_mpint, val_mpint, val_mpint)
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FUNC3(val_mpint, monty_add, val_monty, val_mpint, val_mpint)
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FUNC3(val_mpint, monty_sub, val_monty, val_mpint, val_mpint)
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FUNC3(val_mpint, monty_mul, val_monty, val_mpint, val_mpint)
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FUNC3(val_mpint, monty_pow, val_monty, val_mpint, val_mpint)
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FUNC2(val_mpint, monty_invert, val_monty, val_mpint)
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FUNC3(val_mpint, monty_modsqrt, val_modsqrt, val_mpint, out_uint)
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FUNC3(val_mpint, mp_modpow, val_mpint, val_mpint, val_mpint)
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FUNC3(val_mpint, mp_modmul, val_mpint, val_mpint, val_mpint)
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FUNC3(val_mpint, mp_modadd, val_mpint, val_mpint, val_mpint)
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FUNC3(val_mpint, mp_modsub, val_mpint, val_mpint, val_mpint)
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FUNC3(void, mp_lshift_safe_into, val_mpint, val_mpint, uint)
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FUNC3(void, mp_rshift_safe_into, val_mpint, val_mpint, uint)
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FUNC2(val_mpint, mp_rshift_safe, val_mpint, uint)
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FUNC3(void, mp_lshift_fixed_into, val_mpint, val_mpint, uint)
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FUNC3(void, mp_rshift_fixed_into, val_mpint, val_mpint, uint)
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FUNC2(val_mpint, mp_rshift_fixed, val_mpint, uint)
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FUNC1(val_mpint, mp_random_bits, uint)
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FUNC2(val_mpint, mp_random_in_range, val_mpint, val_mpint)
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/*
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* ecc.h functions.
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*/
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FUNC4(val_wcurve, ecc_weierstrass_curve, val_mpint, val_mpint, val_mpint, opt_val_mpint)
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FUNC1(val_wpoint, ecc_weierstrass_point_new_identity, val_wcurve)
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FUNC3(val_wpoint, ecc_weierstrass_point_new, val_wcurve, val_mpint, val_mpint)
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FUNC3(val_wpoint, ecc_weierstrass_point_new_from_x, val_wcurve, val_mpint, uint)
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FUNC1(val_wpoint, ecc_weierstrass_point_copy, val_wpoint)
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FUNC1(uint, ecc_weierstrass_point_valid, val_wpoint)
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FUNC2(val_wpoint, ecc_weierstrass_add_general, val_wpoint, val_wpoint)
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FUNC2(val_wpoint, ecc_weierstrass_add, val_wpoint, val_wpoint)
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FUNC1(val_wpoint, ecc_weierstrass_double, val_wpoint)
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FUNC2(val_wpoint, ecc_weierstrass_multiply, val_wpoint, val_mpint)
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FUNC1(uint, ecc_weierstrass_is_identity, val_wpoint)
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/* The output pointers in get_affine all become extra output values */
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FUNC3(void, ecc_weierstrass_get_affine, val_wpoint, out_val_mpint, out_val_mpint)
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FUNC3(val_mcurve, ecc_montgomery_curve, val_mpint, val_mpint, val_mpint)
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FUNC2(val_mpoint, ecc_montgomery_point_new, val_mcurve, val_mpint)
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FUNC1(val_mpoint, ecc_montgomery_point_copy, val_mpoint)
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FUNC3(val_mpoint, ecc_montgomery_diff_add, val_mpoint, val_mpoint, val_mpoint)
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FUNC1(val_mpoint, ecc_montgomery_double, val_mpoint)
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FUNC2(val_mpoint, ecc_montgomery_multiply, val_mpoint, val_mpint)
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FUNC2(void, ecc_montgomery_get_affine, val_mpoint, out_val_mpint)
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FUNC1(boolean, ecc_montgomery_is_identity, val_mpoint)
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FUNC4(val_ecurve, ecc_edwards_curve, val_mpint, val_mpint, val_mpint, opt_val_mpint)
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FUNC3(val_epoint, ecc_edwards_point_new, val_ecurve, val_mpint, val_mpint)
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FUNC3(val_epoint, ecc_edwards_point_new_from_y, val_ecurve, val_mpint, uint)
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FUNC1(val_epoint, ecc_edwards_point_copy, val_epoint)
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FUNC2(val_epoint, ecc_edwards_add, val_epoint, val_epoint)
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FUNC2(val_epoint, ecc_edwards_multiply, val_epoint, val_mpint)
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FUNC2(uint, ecc_edwards_eq, val_epoint, val_epoint)
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FUNC3(void, ecc_edwards_get_affine, val_epoint, out_val_mpint, out_val_mpint)
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/*
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* The ssh_hash abstraction. Note the 'consumed', indicating that
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* ssh_hash_final puts its input ssh_hash beyond use.
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*
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* ssh_hash_update is an invention of testcrypt, handled in the real C
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* API by the hash object also functioning as a BinarySink.
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*/
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FUNC1(opt_val_hash, ssh_hash_new, hashalg)
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FUNC1(void, ssh_hash_reset, val_hash)
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FUNC1(val_hash, ssh_hash_copy, val_hash)
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FUNC1(val_string, ssh_hash_digest, val_hash)
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FUNC1(val_string, ssh_hash_final, consumed_val_hash)
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FUNC2(void, ssh_hash_update, val_hash, val_string_ptrlen)
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FUNC1(opt_val_hash, blake2b_new_general, uint)
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/*
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* The ssh2_mac abstraction. Note the optional ssh_cipher parameter
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* to ssh2_mac_new. Also, again, I've invented an ssh2_mac_update so
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* you can put data into the MAC.
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*/
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FUNC2(val_mac, ssh2_mac_new, macalg, opt_val_cipher)
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FUNC2(void, ssh2_mac_setkey, val_mac, val_string_ptrlen)
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FUNC1(void, ssh2_mac_start, val_mac)
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FUNC2(void, ssh2_mac_update, val_mac, val_string_ptrlen)
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FUNC1(val_string, ssh2_mac_genresult, val_mac)
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FUNC1(val_string_asciz_const, ssh2_mac_text_name, val_mac)
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/*
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* The ssh_key abstraction. All the uses of BinarySink and
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* BinarySource in parameters are replaced with ordinary strings for
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* the testing API: new_priv_openssh just takes a string input, and
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* all the functions that output key and signature blobs do it by
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* returning a string.
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*/
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FUNC2(val_key, ssh_key_new_pub, keyalg, val_string_ptrlen)
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FUNC3(opt_val_key, ssh_key_new_priv, keyalg, val_string_ptrlen, val_string_ptrlen)
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FUNC2(opt_val_key, ssh_key_new_priv_openssh, keyalg, val_string_binarysource)
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FUNC2(opt_val_string_asciz, ssh_key_invalid, val_key, uint)
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FUNC4(void, ssh_key_sign, val_key, val_string_ptrlen, uint, out_val_string_binarysink)
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FUNC3(boolean, ssh_key_verify, val_key, val_string_ptrlen, val_string_ptrlen)
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FUNC2(void, ssh_key_public_blob, val_key, out_val_string_binarysink)
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FUNC2(void, ssh_key_private_blob, val_key, out_val_string_binarysink)
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FUNC2(void, ssh_key_openssh_blob, val_key, out_val_string_binarysink)
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FUNC1(val_string_asciz, ssh_key_cache_str, val_key)
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FUNC1(val_keycomponents, ssh_key_components, val_key)
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FUNC2(uint, ssh_key_public_bits, keyalg, val_string_ptrlen)
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/*
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* Accessors to retrieve the innards of a 'key_components'.
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*/
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FUNC1(uint, key_components_count, val_keycomponents)
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FUNC2(opt_val_string_asciz_const, key_components_nth_name, val_keycomponents, uint)
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FUNC2(opt_val_string_asciz_const, key_components_nth_str, val_keycomponents, uint)
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FUNC2(opt_val_mpint, key_components_nth_mp, val_keycomponents, uint)
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/*
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* The ssh_cipher abstraction. The in-place encrypt and decrypt
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* functions are wrapped to replace them with versions that take one
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* string and return a separate string.
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*/
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FUNC1(opt_val_cipher, ssh_cipher_new, cipheralg)
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FUNC2(void, ssh_cipher_setiv, val_cipher, val_string_ptrlen)
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FUNC2(void, ssh_cipher_setkey, val_cipher, val_string_ptrlen)
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FUNC2(val_string, ssh_cipher_encrypt, val_cipher, val_string_ptrlen)
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FUNC2(val_string, ssh_cipher_decrypt, val_cipher, val_string_ptrlen)
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FUNC3(val_string, ssh_cipher_encrypt_length, val_cipher, val_string_ptrlen, uint)
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FUNC3(val_string, ssh_cipher_decrypt_length, val_cipher, val_string_ptrlen, uint)
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/*
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* Integer Diffie-Hellman.
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*/
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FUNC1(val_dh, dh_setup_group, dh_group)
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FUNC2(val_dh, dh_setup_gex, val_mpint, val_mpint)
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FUNC1(uint, dh_modulus_bit_size, val_dh)
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FUNC2(val_mpint, dh_create_e, val_dh, uint)
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FUNC2(boolean, dh_validate_f, val_dh, val_mpint)
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FUNC2(val_mpint, dh_find_K, val_dh, val_mpint)
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/*
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* Elliptic-curve Diffie-Hellman.
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*/
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FUNC1(val_ecdh, ssh_ecdhkex_newkey, ecdh_alg)
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FUNC2(void, ssh_ecdhkex_getpublic, val_ecdh, out_val_string_binarysink)
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FUNC2(opt_val_mpint, ssh_ecdhkex_getkey, val_ecdh, val_string_ptrlen)
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/*
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* RSA key exchange, and also the BinarySource get function
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* get_ssh1_rsa_priv_agent, which is a convenient way to make an
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* RSAKey for RSA kex testing purposes.
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*/
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FUNC1(val_rsakex, ssh_rsakex_newkey, val_string_ptrlen)
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FUNC1(uint, ssh_rsakex_klen, val_rsakex)
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FUNC3(val_string, ssh_rsakex_encrypt, val_rsakex, hashalg, val_string_ptrlen)
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FUNC3(opt_val_mpint, ssh_rsakex_decrypt, val_rsakex, hashalg, val_string_ptrlen)
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FUNC1(val_rsakex, get_rsa_ssh1_priv_agent, val_string_binarysource)
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/*
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* Bare RSA keys as used in SSH-1. The construction API functions
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* write into an existing RSAKey object, so I've invented an 'rsa_new'
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* function to make one in the first place.
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*/
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FUNC0(val_rsa, rsa_new)
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FUNC3(void, get_rsa_ssh1_pub, val_string_binarysource, val_rsa, rsaorder)
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FUNC2(void, get_rsa_ssh1_priv, val_string_binarysource, val_rsa)
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FUNC2(opt_val_string, rsa_ssh1_encrypt, val_string_ptrlen, val_rsa)
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FUNC2(val_mpint, rsa_ssh1_decrypt, val_mpint, val_rsa)
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FUNC2(val_string, rsa_ssh1_decrypt_pkcs1, val_mpint, val_rsa)
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FUNC1(val_string_asciz, rsastr_fmt, val_rsa)
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FUNC1(val_string_asciz, rsa_ssh1_fingerprint, val_rsa)
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FUNC3(void, rsa_ssh1_public_blob, out_val_string_binarysink, val_rsa, rsaorder)
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FUNC1(int, rsa_ssh1_public_blob_len, val_string_ptrlen)
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FUNC2(void, rsa_ssh1_private_blob_agent, out_val_string_binarysink, val_rsa)
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/*
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* The PRNG type. Similarly to hashes and MACs, I've invented an extra
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* function prng_seed_update for putting seed data into the PRNG's
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* exposed BinarySink.
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*/
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FUNC1(val_prng, prng_new, hashalg)
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FUNC1(void, prng_seed_begin, val_prng)
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FUNC2(void, prng_seed_update, val_prng, val_string_ptrlen)
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FUNC1(void, prng_seed_finish, val_prng)
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FUNC2(val_string, prng_read, val_prng, uint)
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FUNC3(void, prng_add_entropy, val_prng, uint, val_string_ptrlen)
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/*
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* Key load/save functions, or rather, the BinarySource / strbuf API
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* that sits just inside the file I/O versions.
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*/
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FUNC2(boolean, ppk_encrypted_s, val_string_binarysource, out_opt_val_string_asciz)
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FUNC2(boolean, rsa1_encrypted_s, val_string_binarysource, out_opt_val_string_asciz)
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FUNC5(boolean, ppk_loadpub_s, val_string_binarysource, out_opt_val_string_asciz, out_val_string_binarysink, out_opt_val_string_asciz, out_opt_val_string_asciz_const)
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FUNC4(int, rsa1_loadpub_s, val_string_binarysource, out_val_string_binarysink, out_opt_val_string_asciz, out_opt_val_string_asciz_const)
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FUNC4(opt_val_key, ppk_load_s, val_string_binarysource, out_opt_val_string_asciz, opt_val_string_asciz, out_opt_val_string_asciz_const)
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FUNC5(int, rsa1_load_s, val_string_binarysource, val_rsa, out_opt_val_string_asciz, opt_val_string_asciz, out_opt_val_string_asciz_const)
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FUNC7(val_string, ppk_save_sb, val_key, opt_val_string_asciz, opt_val_string_asciz, argon2flavour, uint, uint, uint)
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FUNC3(val_string, rsa1_save_sb, val_rsa, opt_val_string_asciz, opt_val_string_asciz)
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/*
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* Password hashing.
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*/
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FUNC9(val_string, argon2, argon2flavour, uint, uint, uint, uint, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
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FUNC2(val_string, argon2_long_hash, uint, val_string_ptrlen)
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/*
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* Key generation functions.
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*/
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FUNC3(val_key, rsa_generate, uint, boolean, val_pgc)
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FUNC2(val_key, dsa_generate, uint, val_pgc)
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FUNC1(opt_val_key, ecdsa_generate, uint)
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FUNC1(opt_val_key, eddsa_generate, uint)
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FUNC3(val_rsa, rsa1_generate, uint, boolean, val_pgc)
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FUNC1(val_pgc, primegen_new_context, primegenpolicy)
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FUNC2(opt_val_mpint, primegen_generate, val_pgc, consumed_val_pcs)
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FUNC2(val_string, primegen_mpu_certificate, val_pgc, val_mpint)
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FUNC1(val_pcs, pcs_new, uint)
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FUNC3(val_pcs, pcs_new_with_firstbits, uint, uint, uint)
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FUNC3(void, pcs_require_residue, val_pcs, val_mpint, val_mpint)
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FUNC2(void, pcs_require_residue_1, val_pcs, val_mpint)
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FUNC2(void, pcs_require_residue_1_mod_prime, val_pcs, val_mpint)
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FUNC3(void, pcs_avoid_residue_small, val_pcs, uint, uint)
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FUNC1(void, pcs_try_sophie_germain, val_pcs)
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FUNC1(void, pcs_set_oneshot, val_pcs)
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FUNC1(void, pcs_ready, val_pcs)
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FUNC4(void, pcs_inspect, val_pcs, out_val_mpint, out_val_mpint, out_val_mpint)
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FUNC1(val_mpint, pcs_generate, val_pcs)
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FUNC0(val_pockle, pockle_new)
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FUNC1(uint, pockle_mark, val_pockle)
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FUNC2(void, pockle_release, val_pockle, uint)
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FUNC2(pocklestatus, pockle_add_small_prime, val_pockle, val_mpint)
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|
FUNC4(pocklestatus, pockle_add_prime, val_pockle, val_mpint, mpint_list, val_mpint)
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FUNC2(val_string, pockle_mpu, val_pockle, val_mpint)
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|
|
|
/*
|
|
* Miscellaneous.
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|
*/
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|
FUNC2(val_wpoint, ecdsa_public, val_mpint, keyalg)
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FUNC2(val_epoint, eddsa_public, val_mpint, keyalg)
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|
FUNC2(val_string, des_encrypt_xdmauth, val_string_ptrlen, val_string_ptrlen)
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FUNC2(val_string, des_decrypt_xdmauth, val_string_ptrlen, val_string_ptrlen)
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FUNC2(val_string, des3_encrypt_pubkey, val_string_ptrlen, val_string_ptrlen)
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|
FUNC2(val_string, des3_decrypt_pubkey, val_string_ptrlen, val_string_ptrlen)
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|
FUNC3(val_string, des3_encrypt_pubkey_ossh, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
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|
FUNC3(val_string, des3_decrypt_pubkey_ossh, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
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|
FUNC3(val_string, aes256_encrypt_pubkey, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
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|
FUNC3(val_string, aes256_decrypt_pubkey, val_string_ptrlen, val_string_ptrlen, val_string_ptrlen)
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|
FUNC1(uint, crc32_rfc1662, val_string_ptrlen)
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|
FUNC1(uint, crc32_ssh1, val_string_ptrlen)
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|
FUNC2(uint, crc32_update, uint, val_string_ptrlen)
|
|
FUNC2(boolean, crcda_detect, val_string_ptrlen, val_string_ptrlen)
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|
|
|
/*
|
|
* These functions aren't part of PuTTY's own API, but are additions
|
|
* by testcrypt itself for administrative purposes.
|
|
*/
|
|
FUNC1(void, random_queue, val_string_ptrlen)
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|
FUNC0(uint, random_queue_len)
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|
FUNC2(void, random_make_prng, hashalg, val_string_ptrlen)
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|
FUNC0(void, random_clear)
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