view libtomcrypt/src/misc/pkcs5/pkcs_5_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"

/**
  @file hkdf_test.c
  PKCS #5 support, self-test, Steffen Jaeckel
*/

#ifdef LTC_PKCS_5

/*
    TEST CASES SOURCE:

Internet Engineering Task Force (IETF)                      S. Josefsson
Request for Comments: 6070                                        SJD AB
Category: Informational                                     January 2011
ISSN: 2070-1721
*/

/**
  PKCS #5 self-test
  @return CRYPT_OK if successful, CRYPT_NOP if tests have been disabled.
*/
int pkcs_5_test (void)
{
 #ifndef LTC_TEST
    return CRYPT_NOP;
 #else

    typedef struct {
        const char* P;
        unsigned long P_len;
        const char* S;
        unsigned long S_len;
        int c;
        unsigned long dkLen;
        unsigned char DK[40];
    } case_item;

    static const case_item cases_5_2[] = {
        {
            "password",
            8,
            "salt",
            4,
            1,
            20,
            { 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71,
              0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06,
              0x2f, 0xe0, 0x37, 0xa6 }
        },
        {
            "password",
            8,
            "salt",
            4,
            2,
            20,
            { 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c,
              0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0,
              0xd8, 0xde, 0x89, 0x57 }
        },
#ifdef LTC_TEST_EXT
        {
            "password",
            8,
            "salt",
            4,
            4096,
            20,
            { 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a,
              0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0,
              0x65, 0xa4, 0x29, 0xc1 }
        },
        {
            "password",
            8,
            "salt",
            4,
            16777216,
            20,
            { 0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4,
              0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c,
              0x26, 0x34, 0xe9, 0x84 }
        },
        {
            "passwordPASSWORDpassword",
            25,
            "saltSALTsaltSALTsaltSALTsaltSALTsalt",
            36,
            4096,
            25,
            { 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b,
              0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a,
              0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70,
              0x38 }
        },
        {
            "pass\0word",
            9,
            "sa\0lt",
            5,
            4096,
            16,
            { 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
              0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 }
        },
#endif /* LTC_TEST_EXT */
    };

    static const case_item cases_5_1[] = {
        {
            "password",
            8,
            "saltsalt", /* must be 8 octects */
            8,          /* ignored by alg1 */
            1,
            20,
            { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c,
              0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44 }
        },
    };

    static const case_item cases_5_1o[] = {
        {
            "password",
            8,
            "saltsalt", /* must be 8 octects */
            8,          /* ignored by alg1_openssl */
            1,
            20,
            { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c,
              0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44 }

        },
        {
            "password",
            8,
            "saltsalt", /* must be 8 octects */
            8,          /* ignored by alg1_openssl */
            1,
            30,
            { 0xca, 0xb8, 0x6d, 0xd6, 0x26, 0x17, 0x10, 0x89, 0x1e, 0x8c,
              0xb5, 0x6e, 0xe3, 0x62, 0x56, 0x91, 0xa7, 0x5d, 0xf3, 0x44,
              0xf0, 0xbf, 0xf4, 0xc1, 0x2c, 0xf3, 0x59, 0x6f, 0xc0, 0x0b }

        }
    };

    unsigned char DK[40];
    unsigned long dkLen;
    int i, err;
    int tested=0, failed=0;
    int hash = find_hash("sha1");
    if (hash == -1)
    {
#ifdef LTC_TEST_DBG
      printf("PKCS#5 test failed: 'sha1' hash not found\n");
#endif
      return CRYPT_ERROR;
    }

    /* testing alg 2 */
    for(i=0; i < (int)(sizeof(cases_5_2) / sizeof(cases_5_2[0])); i++) {
        ++tested;
        dkLen = cases_5_2[i].dkLen;
        if((err = pkcs_5_alg2((unsigned char*)cases_5_2[i].P, cases_5_2[i].P_len,
                              (unsigned char*)cases_5_2[i].S, cases_5_2[i].S_len,
                              cases_5_2[i].c, hash,
                              DK, &dkLen)) != CRYPT_OK) {
#ifdef LTC_TEST_DBG
            printf("\npkcs_5_alg2() #%d: Failed/1 (%s)\n", i, error_to_string(err));
#endif
            ++failed;
        }
        else if (compare_testvector(DK, dkLen, cases_5_2[i].DK, cases_5_2[i].dkLen, "PKCS#5_2", i)) {
            ++failed;
        }
    }

    /* testing alg 1 */
    for(i=0; i < (int)(sizeof(cases_5_1) / sizeof(case_item)); i++, tested++) {
        dkLen = cases_5_1[i].dkLen;
        if((err = pkcs_5_alg1((unsigned char*)cases_5_1[i].P, cases_5_1[i].P_len,
                              (unsigned char*)cases_5_1[i].S,
                              cases_5_1[i].c, hash,
                              DK, &dkLen)) != CRYPT_OK) {
#ifdef LTC_TEST_DBG
            printf("\npkcs_5_alg1() #%d: Failed/1 (%s)\n", i, error_to_string(err));
#endif
            ++failed;
        }
        else if (compare_testvector(DK, dkLen, cases_5_1[i].DK, cases_5_1[i].dkLen, "PKCS#5_1", i)) {
            ++failed;
        }
    }

    /* testing alg 1_openssl */
    for(i = 0; i < (int)(sizeof(cases_5_1o) / sizeof(cases_5_1o[0])); i++, tested++) {
        dkLen = cases_5_1o[i].dkLen;
        if ((err = pkcs_5_alg1_openssl((unsigned char*)cases_5_1o[i].P, cases_5_1o[i].P_len,
                                       (unsigned char*)cases_5_1o[i].S,
                                       cases_5_1o[i].c, hash,
                                       DK, &dkLen)) != CRYPT_OK) {
#ifdef LTC_TEST_DBG
            printf("\npkcs_5_alg1_openssl() #%d: Failed/1 (%s)\n", i, error_to_string(err));
#endif
            ++failed;
        }
        else if (compare_testvector(DK, dkLen, cases_5_1o[i].DK, cases_5_1o[i].dkLen, "PKCS#5_1o", i)) {
            ++failed;
        }
    }

    return (failed != 0) ? CRYPT_FAIL_TESTVECTOR : CRYPT_OK;
 #endif
}

#endif


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