Mercurial > dropbear
annotate libtomcrypt/src/pk/dsa/dsa_export.c @ 958:1bf92da7a2a0
Try without identifying current user
Small change that warns the user if the current user cannot be identified rather than aborting. This came in handy when I put dropbear on a dlink that did not have a true user environment. Falling back on the "-l" option and user@ options works just fine as a client. The only implication I found is that the -J option will fail ungracefully without a known own_user.
author | iquaba <cooka2011@gmail.com> |
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date | Wed, 06 Aug 2014 08:48:43 -0500 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
rev | line source |
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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 * Tom St Denis, [email protected], http://libtomcrypt.com |
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10 */ |
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11 #include "tomcrypt.h" |
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12 |
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13 /** |
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14 @file dsa_export.c |
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15 DSA implementation, export key, Tom St Denis |
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16 */ |
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17 |
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18 #ifdef MDSA |
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19 |
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20 /** |
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21 Export a DSA key to a binary packet |
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22 @param out [out] Where to store the packet |
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23 @param outlen [in/out] The max size and resulting size of the packet |
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24 @param type The type of key to export (PK_PRIVATE or PK_PUBLIC) |
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25 @param key The key to export |
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26 @return CRYPT_OK if successful |
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27 */ |
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28 int dsa_export(unsigned char *out, unsigned long *outlen, int type, dsa_key *key) |
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29 { |
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30 unsigned char flags[1]; |
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31 |
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32 LTC_ARGCHK(out != NULL); |
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33 LTC_ARGCHK(outlen != NULL); |
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34 LTC_ARGCHK(key != NULL); |
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35 |
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36 /* can we store the static header? */ |
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37 if (type == PK_PRIVATE && key->type != PK_PRIVATE) { |
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38 return CRYPT_PK_TYPE_MISMATCH; |
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39 } |
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40 |
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41 if (type != PK_PUBLIC && type != PK_PRIVATE) { |
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42 return CRYPT_INVALID_ARG; |
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43 } |
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44 |
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45 flags[0] = (type != PK_PUBLIC) ? 1 : 0; |
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46 |
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47 if (type == PK_PRIVATE) { |
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48 return der_encode_sequence_multi(out, outlen, |
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49 LTC_ASN1_BIT_STRING, 1UL, flags, |
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50 LTC_ASN1_INTEGER, 1UL, key->g, |
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51 LTC_ASN1_INTEGER, 1UL, key->p, |
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52 LTC_ASN1_INTEGER, 1UL, key->q, |
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53 LTC_ASN1_INTEGER, 1UL, key->y, |
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54 LTC_ASN1_INTEGER, 1UL, key->x, |
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55 LTC_ASN1_EOL, 0UL, NULL); |
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56 } else { |
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57 return der_encode_sequence_multi(out, outlen, |
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58 LTC_ASN1_BIT_STRING, 1UL, flags, |
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59 LTC_ASN1_INTEGER, 1UL, key->g, |
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60 LTC_ASN1_INTEGER, 1UL, key->p, |
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61 LTC_ASN1_INTEGER, 1UL, key->q, |
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62 LTC_ASN1_INTEGER, 1UL, key->y, |
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63 LTC_ASN1_EOL, 0UL, NULL); |
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64 } |
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65 } |
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66 |
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67 #endif |
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68 |
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69 |
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70 /* $Source: /cvs/libtom/libtomcrypt/src/pk/dsa/dsa_export.c,v $ */ |
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71 /* $Revision: 1.8 $ */ |
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72 /* $Date: 2006/03/31 14:15:35 $ */ |