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annotate nss/lib/freebl/alghmac.h @ 4:b513267f632f tip

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Build DBM module
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:58:03 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* This Source Code Form is subject to the terms of the Mozilla Public
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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4
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5 #ifndef _ALGHMAC_H_
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6 #define _ALGHMAC_H_
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7
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8 typedef struct HMACContextStr HMACContext;
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9
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10 SEC_BEGIN_PROTOS
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11
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12 /* destroy HMAC context */
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13 extern void
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14 HMAC_Destroy(HMACContext *cx, PRBool freeit);
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15
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16 /* create HMAC context
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17 * hash_obj hash object from SECRawHashObjects[]
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18 * secret the secret with which the HMAC is performed.
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19 * secret_len the length of the secret.
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20 * isFIPS true if conforming to FIPS 198.
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21 *
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22 * NULL is returned if an error occurs.
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23 */
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24 extern HMACContext *
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25 HMAC_Create(const SECHashObject *hash_obj, const unsigned char *secret,
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26 unsigned int secret_len, PRBool isFIPS);
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27
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28 /* like HMAC_Create, except caller allocates HMACContext. */
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29 SECStatus
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30 HMAC_Init(HMACContext *cx, const SECHashObject *hash_obj,
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31 const unsigned char *secret, unsigned int secret_len, PRBool isFIPS);
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32
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33 /* reset HMAC for a fresh round */
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34 extern void
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35 HMAC_Begin(HMACContext *cx);
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36
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37 /* update HMAC
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38 * cx HMAC Context
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39 * data the data to perform HMAC on
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40 * data_len the length of the data to process
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41 */
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42 extern void
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43 HMAC_Update(HMACContext *cx, const unsigned char *data, unsigned int data_len);
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44
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45 /* Finish HMAC -- place the results within result
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46 * cx HMAC context
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47 * result buffer for resulting hmac'd data
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48 * result_len where the resultant hmac length is stored
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49 * max_result_len maximum possible length that can be stored in result
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50 */
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51 extern SECStatus
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52 HMAC_Finish(HMACContext *cx, unsigned char *result, unsigned int *result_len,
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53 unsigned int max_result_len);
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54
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55 /* clone a copy of the HMAC state. this is usefult when you would
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56 * need to keep a running hmac but also need to extract portions
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57 * partway through the process.
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58 */
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59 extern HMACContext *
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60 HMAC_Clone(HMACContext *cx);
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61
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62 SEC_END_PROTOS
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63
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64 #endif
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