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Code Issues Releases Wiki Activity

Fix bad casts in wc_EccPublicKeyDecode when using WOLFSSL_ECC_CURVE_STATIC with custom curves.

pull/5613/head
Kareem 2022-09-20 15:33:14 -07:00
parent 90c9363af8
commit c6bd297bd2
1 changed files with 28 additions and 4 deletions
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32
wolfcrypt/src/asn.c
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@ -32056,8 +32056,14 @@ int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
SkipObjectId(input, inOutIdx, inSz);
ret = ASNToHexString(input, inOutIdx, &p, inSz,
key->heap, DYNAMIC_TYPE_ECC_BUFFER);
if (ret == 0)
if (ret == 0) {
#ifndef WOLFSSL_ECC_CURVE_STATIC
ret = EccKeyParamCopy((char**)&curve->prime, p);
#else
const char *_tmp_ptr = &curve->prime[0];
ret = EccKeyParamCopy((char**)&_tmp_ptr, p);
#endif
}
}
if (ret == 0) {
curve->size = (int)XSTRLEN(curve->prime) / 2;
@ -32069,15 +32075,27 @@ int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
char* af = NULL;
ret = ASNToHexString(input, inOutIdx, &af, inSz,
key->heap, DYNAMIC_TYPE_ECC_BUFFER);
if (ret == 0)
if (ret == 0) {
#ifndef WOLFSSL_ECC_CURVE_STATIC
ret = EccKeyParamCopy((char**)&curve->Af, af);
#else
const char *_tmp_ptr = &curve->Af[0];
ret = EccKeyParamCopy((char**)&_tmp_ptr, af);
#endif
}
}
if (ret == 0) {
char* bf = NULL;
ret = ASNToHexString(input, inOutIdx, &bf, inSz,
key->heap, DYNAMIC_TYPE_ECC_BUFFER);
if (ret == 0)
if (ret == 0) {
#ifndef WOLFSSL_ECC_CURVE_STATIC
ret = EccKeyParamCopy((char**)&curve->Bf, bf);
#else
const char *_tmp_ptr = &curve->Bf[0];
ret = EccKeyParamCopy((char**)&_tmp_ptr, bf);
#endif
}
}
if (ret == 0) {
localIdx = *inOutIdx;
@ -32130,8 +32148,14 @@ int wc_EccPublicKeyDecode(const byte* input, word32* inOutIdx,
XFREE(point, key->heap, DYNAMIC_TYPE_ECC_BUFFER);
ret = ASNToHexString(input, inOutIdx, &o, inSz,
key->heap, DYNAMIC_TYPE_ECC_BUFFER);
if (ret == 0)
if (ret == 0) {
#ifndef WOLFSSL_ECC_CURVE_STATIC
ret = EccKeyParamCopy((char**)&curve->order, o);
#else
const char *_tmp_ptr = &curve->order[0];
ret = EccKeyParamCopy((char**)&_tmp_ptr, o);
#endif
}
}
if (ret == 0) {
curve->cofactor = GetInteger7Bit(input, inOutIdx, inSz);