Mercurial > dropbear
view libtomcrypt/src/pk/asn1/der/set/der_encode_set.c @ 913:6e2aa862e167
The arguments are for configure, not make!
author | Matt Johnston <matt@ucc.asn.au> |
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date | Fri, 07 Mar 2014 20:52:57 +0800 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://libtomcrypt.com */ #include "tomcrypt.h" /** @file der_encode_set.c ASN.1 DER, Encode a SET, Tom St Denis */ #ifdef LTC_DER /* LTC define to ASN.1 TAG */ static int ltc_to_asn1(int v) { switch (v) { case LTC_ASN1_BOOLEAN: return 0x01; case LTC_ASN1_INTEGER: case LTC_ASN1_SHORT_INTEGER: return 0x02; case LTC_ASN1_BIT_STRING: return 0x03; case LTC_ASN1_OCTET_STRING: return 0x04; case LTC_ASN1_NULL: return 0x05; case LTC_ASN1_OBJECT_IDENTIFIER: return 0x06; case LTC_ASN1_UTF8_STRING: return 0x0C; case LTC_ASN1_PRINTABLE_STRING: return 0x13; case LTC_ASN1_IA5_STRING: return 0x16; case LTC_ASN1_UTCTIME: return 0x17; case LTC_ASN1_SEQUENCE: return 0x30; case LTC_ASN1_SET: case LTC_ASN1_SETOF: return 0x31; default: return -1; } } static int qsort_helper(const void *a, const void *b) { ltc_asn1_list *A = (ltc_asn1_list *)a, *B = (ltc_asn1_list *)b; int r; r = ltc_to_asn1(A->type) - ltc_to_asn1(B->type); /* for QSORT the order is UNDEFINED if they are "equal" which means it is NOT DETERMINISTIC. So we force it to be :-) */ if (r == 0) { /* their order in the original list now determines the position */ return A->used - B->used; } else { return r; } } /* Encode a SET type @param list The list of items to encode @param inlen The number of items in the list @param out [out] The destination @param outlen [in/out] The size of the output @return CRYPT_OK on success */ int der_encode_set(ltc_asn1_list *list, unsigned long inlen, unsigned char *out, unsigned long *outlen) { ltc_asn1_list *copy; unsigned long x; int err; /* make copy of list */ copy = XCALLOC(inlen, sizeof(*copy)); if (copy == NULL) { return CRYPT_MEM; } /* fill in used member with index so we can fully sort it */ for (x = 0; x < inlen; x++) { copy[x] = list[x]; copy[x].used = x; } /* sort it by the "type" field */ XQSORT(copy, inlen, sizeof(*copy), &qsort_helper); /* call der_encode_sequence_ex() */ err = der_encode_sequence_ex(copy, inlen, out, outlen, LTC_ASN1_SET); /* free list */ XFREE(copy); return err; } #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/set/der_encode_set.c,v $ */ /* $Revision: 1.11 $ */ /* $Date: 2006/11/26 02:27:37 $ */