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annotate dbhelpers.c @ 1638:315fcba6960e

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dropbearconvert: keyimport.c: fix BER encoding of secp521r1 keys (#69) keysizes >= 128 octets will be encoded with a 3 byte header which must be accounted by the optional-header Reproduce: master:~/build/dropbear$ ./dropbearkey -t ecdsa -s 521 -f K Generating 521 bit ecdsa key, this may take a while... master:~/build/dropbear$ ./dropbearconvert d o K L Key is a ecdsa-sha2-nistp521 key Wrote key to 'L' master:~/build/dropbear$ openssl ec < L read EC key unable to load Key 139769806448384:error:0D07209B:asn1 encoding routines:ASN1_get_object:too long:crypto/asn1/asn1_lib.c:91:
author Christian Hohnstädt <christian@hohnstaedt.de>
date Wed, 20 Mar 2019 16:42:47 +0100
parents e75dab5bec71
children
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1283
3017bc7d6238 move m_burn and function attributes to dbhelpers
Matt Johnston <matt@ucc.asn.au>
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1 #include "dbhelpers.h"
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Matt Johnston <matt@ucc.asn.au>
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2 #include "includes.h"
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3
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Matt Johnston <matt@ucc.asn.au>
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4 /* Erase data */
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Matt Johnston <matt@ucc.asn.au>
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5 void m_burn(void *data, unsigned int len) {
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6
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7 #if defined(HAVE_MEMSET_S)
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Matt Johnston <matt@ucc.asn.au>
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8 memset_s(data, len, 0x0, len);
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9 #elif defined(HAVE_EXPLICIT_BZERO)
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10 explicit_bzero(data, len);
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11 #else
1575
e75dab5bec71 some linting after fuzz merge (#60)
François Perrad <francois.perrad@gadz.org>
parents: 1568
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12 /* This must be volatile to avoid compiler optimisation */
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4b1a807a3188 Just use memset, it should'be be optimised out in a separate file
Matt Johnston <matt@ucc.asn.au>
parents: 1283
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13 volatile void *p = data;
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e75dab5bec71 some linting after fuzz merge (#60)
François Perrad <francois.perrad@gadz.org>
parents: 1568
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14 memset((void*)p, 0x0, len);
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15 #endif
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16 }
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