Mercurial > dropbear
view libtomcrypt/src/encauth/chachapoly/chacha20poly1305_test.c @ 1930:299f4f19ba19
Add /usr/sbin and /sbin to default root PATH
When dropbear is used in a very restricted environment (such as in a
initrd), the default user shell is often also very restricted
and doesn't take care of setting the PATH so the user ends up
with the PATH set by dropbear. Unfortunately, dropbear always
sets "/usr/bin:/bin" as default PATH even for the root user
which should have /usr/sbin and /sbin too.
For a concrete instance of this problem, see the "Remote Unlocking"
section in this tutorial: https://paxswill.com/blog/2013/11/04/encrypted-raspberry-pi/
It speaks of a bug in the initramfs script because it's written "blkid"
instead of "/sbin/blkid"... this is just because the scripts from the
initramfs do not expect to have a PATH without the sbin directories and
because dropbear is not setting the PATH appropriately for the root user.
I'm thus suggesting to use the attached patch to fix this misbehaviour (I
did not test it, but it's easy enough). It might seem anecdotic but
multiple Kali users have been bitten by this.
From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=903403
author | Raphael Hertzog <hertzog@debian.org> |
---|---|
date | Mon, 09 Jul 2018 16:27:53 +0200 |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ #include "tomcrypt.h" #ifdef LTC_CHACHA20POLY1305_MODE int chacha20poly1305_test(void) { #ifndef LTC_TEST return CRYPT_NOP; #else chacha20poly1305_state st1, st2; unsigned char k[] = { 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f }; unsigned char i12[] = { 0x07, 0x00, 0x00, 0x00, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47 }; unsigned char i8[] = { 0x07, 0x00, 0x00, 0x00, 0x40, 0x41, 0x42, 0x43 }; unsigned char aad[] = { 0x50, 0x51, 0x52, 0x53, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7 }; unsigned char enc[] = { 0xD3, 0x1A, 0x8D, 0x34, 0x64, 0x8E, 0x60, 0xDB, 0x7B, 0x86, 0xAF, 0xBC, 0x53, 0xEF, 0x7E, 0xC2, 0xA4, 0xAD, 0xED, 0x51, 0x29, 0x6E, 0x08, 0xFE, 0xA9, 0xE2, 0xB5, 0xA7, 0x36, 0xEE, 0x62, 0xD6, 0x3D, 0xBE, 0xA4, 0x5E, 0x8C, 0xA9, 0x67, 0x12, 0x82, 0xFA, 0xFB, 0x69, 0xDA, 0x92, 0x72, 0x8B, 0x1A, 0x71, 0xDE, 0x0A, 0x9E, 0x06, 0x0B, 0x29, 0x05, 0xD6, 0xA5, 0xB6, 0x7E, 0xCD, 0x3B, 0x36, 0x92, 0xDD, 0xBD, 0x7F, 0x2D, 0x77, 0x8B, 0x8C, 0x98, 0x03, 0xAE, 0xE3, 0x28, 0x09, 0x1B, 0x58, 0xFA, 0xB3, 0x24, 0xE4, 0xFA, 0xD6, 0x75, 0x94, 0x55, 0x85, 0x80, 0x8B, 0x48, 0x31, 0xD7, 0xBC, 0x3F, 0xF4, 0xDE, 0xF0, 0x8E, 0x4B, 0x7A, 0x9D, 0xE5, 0x76, 0xD2, 0x65, 0x86, 0xCE, 0xC6, 0x4B, 0x61, 0x16 }; unsigned char tag[] = { 0x1A, 0xE1, 0x0B, 0x59, 0x4F, 0x09, 0xE2, 0x6A, 0x7E, 0x90, 0x2E, 0xCB, 0xD0, 0x60, 0x06, 0x91 }; char m[] = "Ladies and Gentlemen of the class of '99: If I could offer you only one tip for the future, sunscreen would be it."; unsigned long mlen = strlen(m); unsigned long len; unsigned char rfc7905_pt[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F }; unsigned char rfc7905_enc[] = { 0xE4, 0x62, 0x85, 0xB4, 0x29, 0x95, 0x34, 0x96, 0xAB, 0xFB, 0x67, 0xCD, 0xAE, 0xAC, 0x94, 0x1E }; unsigned char rfc7905_tag[] = { 0x16, 0x2C, 0x92, 0x48, 0x2A, 0xDB, 0xD3, 0x5D, 0x48, 0xBE, 0xC6, 0xFF, 0x10, 0x9C, 0xBA, 0xE4 }; unsigned char ct[1000], pt[1000], emac[16], dmac[16]; int err; /* encrypt IV 96bit */ if ((err = chacha20poly1305_init(&st1, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv(&st1, i12, sizeof(i12))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st1, aad, sizeof(aad))) != CRYPT_OK) return err; /* encrypt piece by piece */ if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m, 25, ct)) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m + 25, 10, ct + 25)) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m + 35, 35, ct + 35)) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m + 70, 5, ct + 70)) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m + 75, 5, ct + 75)) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m + 80, mlen - 80, ct + 80)) != CRYPT_OK) return err; len = sizeof(emac); if ((err = chacha20poly1305_done(&st1, emac, &len)) != CRYPT_OK) return err; if (compare_testvector(ct, mlen, enc, sizeof(enc), "ENC-CT", 1) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(emac, len, tag, sizeof(tag), "ENC-TAG", 2) != 0) return CRYPT_FAIL_TESTVECTOR; /* decrypt IV 96bit */ if ((err = chacha20poly1305_init(&st2, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv(&st2, i12, sizeof(i12))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st2, aad, sizeof(aad))) != CRYPT_OK) return err; if ((err = chacha20poly1305_decrypt(&st2, ct, 21, pt)) != CRYPT_OK) return err; if ((err = chacha20poly1305_decrypt(&st2, ct + 21, mlen - 21, pt + 21)) != CRYPT_OK) return err; len = sizeof(dmac); if ((err = chacha20poly1305_done(&st2, dmac, &len)) != CRYPT_OK) return err; if (compare_testvector(pt, mlen, m, mlen, "DEC-PT", 3) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(dmac, len, tag, sizeof(tag), "DEC-TAG", 4) != 0) return CRYPT_FAIL_TESTVECTOR; /* chacha20poly1305_memory - encrypt */ len = sizeof(emac); if ((err = chacha20poly1305_memory(k, sizeof(k), i12, sizeof(i12), aad, sizeof(aad), (unsigned char *)m, mlen, ct, emac, &len, CHACHA20POLY1305_ENCRYPT)) != CRYPT_OK) return err; if (compare_testvector(ct, mlen, enc, sizeof(enc), "ENC-CT2", 1) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(emac, len, tag, sizeof(tag), "ENC-TAG2", 2) != 0) return CRYPT_FAIL_TESTVECTOR; /* chacha20poly1305_memory - decrypt */ len = sizeof(dmac); if ((err = chacha20poly1305_memory(k, sizeof(k), i12, sizeof(i12), aad, sizeof(aad), ct, mlen, pt, dmac, &len, CHACHA20POLY1305_DECRYPT)) != CRYPT_OK) return err; if (compare_testvector(pt, mlen, m, mlen, "DEC-PT2", 3) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(dmac, len, tag, sizeof(tag), "DEC-TAG2", 4) != 0) return CRYPT_FAIL_TESTVECTOR; /* encrypt - rfc7905 */ if ((err = chacha20poly1305_init(&st1, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv_rfc7905(&st1, i12, sizeof(i12), CONST64(0x1122334455667788))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st1, aad, sizeof(aad))) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, rfc7905_pt, 16, ct)) != CRYPT_OK) return err; len = sizeof(emac); if ((err = chacha20poly1305_done(&st1, emac, &len)) != CRYPT_OK) return err; if (compare_testvector(ct, 16, rfc7905_enc, 16, "ENC-CT3", 1) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(emac, len, rfc7905_tag, 16, "ENC-TAG3", 2) != 0) return CRYPT_FAIL_TESTVECTOR; /* decrypt - rfc7905 */ if ((err = chacha20poly1305_init(&st1, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv_rfc7905(&st1, i12, sizeof(i12), CONST64(0x1122334455667788))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st1, aad, sizeof(aad))) != CRYPT_OK) return err; if ((err = chacha20poly1305_decrypt(&st1, ct, 16, pt)) != CRYPT_OK) return err; len = sizeof(dmac); if ((err = chacha20poly1305_done(&st1, dmac, &len)) != CRYPT_OK) return err; if (compare_testvector(pt, 16, rfc7905_pt, 16, "DEC-CT3", 1) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(dmac, len, rfc7905_tag, 16, "DEC-TAG3", 2) != 0) return CRYPT_FAIL_TESTVECTOR; /* encrypt IV 64bit */ if ((err = chacha20poly1305_init(&st1, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv(&st1, i8, sizeof(i8))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st1, aad, sizeof(aad))) != CRYPT_OK) return err; if ((err = chacha20poly1305_encrypt(&st1, (unsigned char *)m, mlen, ct)) != CRYPT_OK) return err; len = sizeof(emac); if ((err = chacha20poly1305_done(&st1, emac, &len)) != CRYPT_OK) return err; /* decrypt IV 64bit */ if ((err = chacha20poly1305_init(&st2, k, sizeof(k))) != CRYPT_OK) return err; if ((err = chacha20poly1305_setiv(&st2, i8, sizeof(i8))) != CRYPT_OK) return err; if ((err = chacha20poly1305_add_aad(&st2, aad, sizeof(aad))) != CRYPT_OK) return err; if ((err = chacha20poly1305_decrypt(&st2, ct, mlen, pt)) != CRYPT_OK) return err; len = sizeof(dmac); if ((err = chacha20poly1305_done(&st2, dmac, &len)) != CRYPT_OK) return err; if (compare_testvector(pt, mlen, m, mlen, "DEC-PT4", 1) != 0) return CRYPT_FAIL_TESTVECTOR; if (compare_testvector(dmac, len, emac, len, "DEC-TAG4", 2) != 0) return CRYPT_FAIL_TESTVECTOR; return CRYPT_OK; #endif } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */