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ocsp: responderID.ByKey is SHA-1 Digest len

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Check that responderID.ByKey is exactly WC_SHA_DIGEST_SIZE as per RFC
6960. KEYID_SIZE can change across build configuration.
This commit is contained in:
Marco Oliverio
2025-02-20 16:07:22 +00:00
parent a85641574d
commit 8b80cb10d6
3 changed files with 13 additions and 7 deletions
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2
tests/api/test_ocsp.c
View File

@ -222,7 +222,7 @@ int test_ocsp_basic_verify(void)
ExpectIntEQ(response->responseStatus, 0);
ExpectIntEQ(response->responderIdType, OCSP_RESPONDER_ID_KEY);
ExpectBufEQ(response->responderId.keyHash, cert.subjectKeyHash,
OCSP_DIGEST_SIZE);
OCSP_RESPONDER_ID_KEY_SZ);
wolfSSL_OCSP_RESPONSE_free(response);
/* decoding with no embedded certificates */

15
wolfcrypt/src/asn.c
View File

@ -36964,7 +36964,7 @@ static int DecodeResponseData(byte* source, word32* ioIndex,
if (GetOctetString(source, &idx, &length, size) < 0)
return ASN_PARSE_E;
if (length != KEYID_SIZE)
if (length != OCSP_RESPONDER_ID_KEY_SZ)
return ASN_PARSE_E;
resp->responderIdType = OCSP_RESPONDER_ID_KEY;
XMEMCPY(resp->responderId.keyHash, source + idx, length);
@ -37027,7 +37027,7 @@ static int DecodeResponseData(byte* source, word32* ioIndex,
int ret = 0;
byte version;
word32 dateSz = 0;
word32 responderByKeySz = KEYID_SIZE;
word32 responderByKeySz = OCSP_RESPONDER_ID_KEY_SZ;
word32 idx = *ioIndex;
OcspEntry* single = NULL;
@ -37073,7 +37073,8 @@ static int DecodeResponseData(byte* source, word32* ioIndex,
resp->responderId.nameHash, WC_SHA);
} else {
resp->responderIdType = OCSP_RESPONDER_ID_KEY;
if (dataASN[OCSPRESPDATAASN_IDX_BYKEY_OCT].length != KEYID_SIZE) {
if (dataASN[OCSPRESPDATAASN_IDX_BYKEY_OCT].length
!= OCSP_RESPONDER_ID_KEY_SZ) {
ret = ASN_PARSE_E;
} else {
resp->responderIdType = OCSP_RESPONDER_ID_KEY;
@ -37226,10 +37227,14 @@ enum {
static int OcspRespIdMatch(OcspResponse *resp, const byte *NameHash,
const byte *keyHash)
{
if (resp->responderIdType == OCSP_RESPONDER_ID_INVALID)
return 0;
if (resp->responderIdType == OCSP_RESPONDER_ID_NAME)
return XMEMCMP(NameHash, resp->responderId.nameHash,
SIGNER_DIGEST_SIZE) == 0;
return XMEMCMP(keyHash, resp->responderId.keyHash, KEYID_SIZE) == 0;
/* OCSP_RESPONDER_ID_KEY */
return ((int)KEYID_SIZE == OCSP_RESPONDER_ID_KEY_SZ) &&
XMEMCMP(keyHash, resp->responderId.keyHash, KEYID_SIZE) == 0;
}
#ifndef WOLFSSL_NO_OCSP_ISSUER_CHECK
@ -37268,7 +37273,7 @@ static Signer *OcspFindSigner(OcspResponse *resp, WOLFSSL_CERT_MANAGER *cm)
if (s)
return s;
}
else {
else if ((int)KEYID_SIZE == OCSP_RESPONDER_ID_KEY_SZ) {
s = GetCAByKeyHash(cm, resp->responderId.keyHash);
if (s)
return s;

3
wolfssl/wolfcrypt/asn.h
View File

@ -2732,6 +2732,7 @@ struct OcspEntry
WC_BITFIELD used:1; /* entry used */
};
#define OCSP_RESPONDER_ID_KEY_SZ 20
enum responderIdType {
OCSP_RESPONDER_ID_INVALID = 0,
OCSP_RESPONDER_ID_NAME = 1,
@ -2750,7 +2751,7 @@ struct OcspResponse {
enum responderIdType responderIdType;
union {
byte keyHash[KEYID_SIZE];
byte keyHash[OCSP_RESPONDER_ID_KEY_SZ];
byte nameHash[KEYID_SIZE];
} responderId ;