Mercurial > dropbear
annotate libtomcrypt/src/pk/rsa/rsa_export.c @ 1295:750ec4ec4cbe
Convert #ifdef to #if, other build changes
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 04 May 2016 15:33:40 +0200 |
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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 rsa_export.c |
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15 Export RSA PKCS keys, Tom St Denis |
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16 */ |
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17 |
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18 #ifdef MRSA |
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19 |
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20 /** |
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21 This will export either an RSAPublicKey or RSAPrivateKey [defined in PKCS #1 v2.1] |
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22 @param out [out] Destination of 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 exported key (PK_PRIVATE or PK_PUBLIC) |
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25 @param key The RSA key to export |
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26 @return CRYPT_OK if successful |
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27 */ |
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28 int rsa_export(unsigned char *out, unsigned long *outlen, int type, rsa_key *key) |
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29 { |
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30 unsigned long zero=0; |
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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, e, d, p, q, d mod (p-1), d mod (q - 1), 1/q mod p |
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44 */ |
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45 return 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->e, |
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49 LTC_ASN1_INTEGER, 1UL, key->d, |
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50 LTC_ASN1_INTEGER, 1UL, key->p, |
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51 LTC_ASN1_INTEGER, 1UL, key->q, |
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52 LTC_ASN1_INTEGER, 1UL, key->dP, |
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53 LTC_ASN1_INTEGER, 1UL, key->dQ, |
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54 LTC_ASN1_INTEGER, 1UL, key->qP, |
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55 LTC_ASN1_EOL, 0UL, NULL); |
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56 } else { |
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57 /* public key */ |
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58 return der_encode_sequence_multi(out, outlen, |
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59 LTC_ASN1_INTEGER, 1UL, key->N, |
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60 LTC_ASN1_INTEGER, 1UL, key->e, |
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61 LTC_ASN1_EOL, 0UL, NULL); |
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62 } |
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63 } |
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64 |
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65 #endif /* MRSA */ |
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66 |
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67 /* $Source: /cvs/libtom/libtomcrypt/src/pk/rsa/rsa_export.c,v $ */ |
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68 /* $Revision: 1.15 $ */ |
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69 /* $Date: 2006/03/31 14:15:35 $ */ |