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extract some descriptions from cose_key

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merlokk 2018-11-26 19:16:47 +02:00
commit f7354c705d
2 changed files with 50 additions and 0 deletions
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49
client/fido/cose.c
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@ -11,6 +11,8 @@
//
#include "cose.h"
#include <cbor.h>
#include "cbortools.h"
#include "util.h"
static const char COSEEmptyStr[] = "";
@ -126,8 +128,55 @@ const char *GetCOSEAlgDescription(int id) {
return COSEEmptyStr;
}
COSEValueNameDesc_t *GetCOSEktyElm(int id) {
for (int i = 0; i < ARRAYLEN(COSEKeyTypeValueDesc); i++)
if (COSEKeyTypeValueDesc[i].Value == id)
return &COSEKeyTypeValueDesc[i];
return NULL;
}
const char *GetCOSEktyDescription(int id) {
COSEValueNameDesc_t *elm = GetCOSEktyElm(id);
if (elm)
return elm->Description;
return COSEEmptyStr;
}
int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public_key) {
CborParser parser;
CborValue map;
int64_t i64;
if(verbose)
PrintAndLog("----------- CBOR decode ----------------");
// kty
int res = CborMapGetKeyById(&parser, &map, data, datalen, 1);
if(!res) {
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("kty [%lld] %s", (long long)i64, GetCOSEktyDescription(i64));
}
// algorithm
res = CborMapGetKeyById(&parser, &map, data, datalen, 3);
if(!res) {
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("algorithm [%lld] %s", (long long)i64, GetCOSEAlgDescription(i64));
}
// curve
res = CborMapGetKeyById(&parser, &map, data, datalen, -1);
if(!res) {
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("curve [%lld] %s", (long long)i64, GetCOSEAlgDescription(i64));
}
if(verbose)
PrintAndLog("----------- CBOR decode ----------------");
return 0;
}

1
client/fido/cose.h
View file

@ -19,6 +19,7 @@
extern const char *GetCOSEAlgName(int id);
extern const char *GetCOSEAlgDescription(int id);
extern const char *GetCOSEktyDescription(int id);
extern int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public_key);