Mercurial > dropbear

annotate libtomcrypt/src/pk/katja/katja_export.c @ 1857:6022df862942

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Use DSCP for IP QoS traffic classes The previous TOS values are deprecated and not used by modern traffic classifiers. This sets AF21 for "interactive" traffic (with a tty). Non-tty traffic sets AF11 - that indicates high throughput but is not lowest priority (which would be CS1 or LE). This differs from the CS1 used by OpenSSH, it lets interactive git over SSH have higher priority than background least effort traffic. Dropbear's settings here should be suitable with the diffservs used by CAKE qdisc.
author Matt Johnston <matt@ucc.asn.au>
date Tue, 25 Jan 2022 17:32:20 +0800
parents 6dba84798cd5
children
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9 #include "tomcrypt.h"
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10
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11 /**
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12 @file katja_export.c
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13 Export Katja PKCS-style keys, Tom St Denis
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14 */
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15
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16 #ifdef LTC_MKAT
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17
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18 /**
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19 This will export either an KatjaPublicKey or KatjaPrivateKey
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20 @param out [out] Destination of the packet
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21 @param outlen [in/out] The max size and resulting size of the packet
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22 @param type The type of exported key (PK_PRIVATE or PK_PUBLIC)
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23 @param key The Katja key to export
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24 @return CRYPT_OK if successful
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25 */
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26 int katja_export(unsigned char *out, unsigned long *outlen, int type, katja_key *key)
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27 {
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28 int err;
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29 unsigned long zero=0;
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30
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31 LTC_ARGCHK(out != NULL);
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32 LTC_ARGCHK(outlen != NULL);
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33 LTC_ARGCHK(key != NULL);
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34
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35 /* type valid? */
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36 if (!(key->type == PK_PRIVATE) && (type == PK_PRIVATE)) {
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37 return CRYPT_PK_INVALID_TYPE;
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38 }
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39
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40 if (type == PK_PRIVATE) {
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41 /* private key */
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42 /* output is
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43 Version, n, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p, pq
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44 */
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45 if ((err = der_encode_sequence_multi(out, outlen,
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46 LTC_ASN1_SHORT_INTEGER, 1UL, &zero,
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47 LTC_ASN1_INTEGER, 1UL, key->N,
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48 LTC_ASN1_INTEGER, 1UL, key->d,
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49 LTC_ASN1_INTEGER, 1UL, key->p,
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50 LTC_ASN1_INTEGER, 1UL, key->q,
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51 LTC_ASN1_INTEGER, 1UL, key->dP,
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52 LTC_ASN1_INTEGER, 1UL, key->dQ,
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53 LTC_ASN1_INTEGER, 1UL, key->qP,
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54 LTC_ASN1_INTEGER, 1UL, key->pq,
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55 LTC_ASN1_EOL, 0UL, NULL)) != CRYPT_OK) {
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56 return err;
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57 }
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58
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59 /* clear zero and return */
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60 return CRYPT_OK;
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61 } else {
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62 /* public key */
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63 return der_encode_sequence_multi(out, outlen,
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64 LTC_ASN1_INTEGER, 1UL, key->N,
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65 LTC_ASN1_EOL, 0UL, NULL);
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66 }
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67 }
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68
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69 #endif /* LTC_MRSA */
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70
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71 /* ref: $Format:%D$ */
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72 /* git commit: $Format:%H$ */
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73 /* commit time: $Format:%ai$ */