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annotate libtomcrypt/src/pk/asn1/der/sequence/der_encode_subject_public_key_info.c @ 1617:1fbe598a14fb

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Merge bugfix delay invalid users
author Matt Johnston <matt@ucc.asn.au>
date Thu, 23 Aug 2018 23:43:45 +0800
parents 6dba84798cd5
children
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1471
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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 der_encode_subject_public_key_info.c
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13 ASN.1 DER, encode a Subject Public Key structure --nmav
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14 */
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15
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16 #ifdef LTC_DER
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17
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18 /* AlgorithmIdentifier := SEQUENCE {
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19 * algorithm OBJECT IDENTIFIER,
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20 * parameters ANY DEFINED BY algorithm
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21 * }
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22 *
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23 * SubjectPublicKeyInfo := SEQUENCE {
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24 * algorithm AlgorithmIdentifier,
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25 * subjectPublicKey BIT STRING
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26 * }
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27 */
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28 /**
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29 Encode a subject public key info
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30 @param out The output buffer
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31 @param outlen [in/out] Length of buffer and resulting length of output
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32 @param algorithm One out of the enum #public_key_algorithms
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33 @param public_key The buffer for the public key
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34 @param public_key_len The length of the public key buffer
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35 @param parameters_type The parameters' type out of the enum ltc_asn1_type
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36 @param parameters The parameters to include
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37 @param parameters_len The number of parameters to include
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38 @return CRYPT_OK on success
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39 */
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40 int der_encode_subject_public_key_info(unsigned char *out, unsigned long *outlen,
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41 unsigned int algorithm, void* public_key, unsigned long public_key_len,
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42 unsigned long parameters_type, void* parameters, unsigned long parameters_len)
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43 {
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44 int err;
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45 ltc_asn1_list alg_id[2];
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46 oid_st oid;
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47
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48 LTC_ARGCHK(out != NULL);
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49 LTC_ARGCHK(outlen != NULL);
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50
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51 err = pk_get_oid(algorithm, &oid);
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52 if (err != CRYPT_OK) {
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53 return err;
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54 }
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55
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56 LTC_SET_ASN1(alg_id, 0, LTC_ASN1_OBJECT_IDENTIFIER, oid.OID, oid.OIDlen);
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57 LTC_SET_ASN1(alg_id, 1, (ltc_asn1_type)parameters_type, parameters, parameters_len);
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58
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59 return der_encode_sequence_multi(out, outlen,
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60 LTC_ASN1_SEQUENCE, (unsigned long)sizeof(alg_id)/sizeof(alg_id[0]), alg_id,
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61 LTC_ASN1_RAW_BIT_STRING, public_key_len*8U, public_key,
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62 LTC_ASN1_EOL, 0UL, NULL);
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63
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64 }
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65
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66 #endif
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67
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68 /* ref: $Format:%D$ */
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69 /* git commit: $Format:%H$ */
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70 /* commit time: $Format:%ai$ */
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71