net-snmp/SOURCES/net-snmp-5.8-digest-from-ECC.patch

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2021-11-09 10:08:22 +00:00
From a1968db524e087a36a19a351b89bf6f1633819aa Mon Sep 17 00:00:00 2001
From: minfrin <minfrin@users.noreply.github.com>
Date: Tue, 5 Jan 2021 23:17:14 +0000
Subject: [PATCH] Add support for digests detected from ECC certificates
Previously, the digest could be detected on RSA certificates only. This
patch adds detection for ECC certificates.
[ bvanassche: changed _htmap2 into a two-dimensional array and renamed _htmap2
back to _htmap ]
---
snmplib/snmp_openssl.c | 60 +++++++++++++++++++++++++++++++++++-------
1 file changed, 50 insertions(+), 10 deletions(-)
diff --git a/snmplib/snmp_openssl.c b/snmplib/snmp_openssl.c
index c092a007af..432cb5c27c 100644
--- a/snmplib/snmp_openssl.c
+++ b/snmplib/snmp_openssl.c
@@ -521,18 +521,54 @@ netsnmp_openssl_cert_dump_extensions(X509 *ocert)
}
}
-static int _htmap[NS_HASH_MAX + 1] = {
- 0, NID_md5WithRSAEncryption, NID_sha1WithRSAEncryption,
- NID_sha224WithRSAEncryption, NID_sha256WithRSAEncryption,
- NID_sha384WithRSAEncryption, NID_sha512WithRSAEncryption };
+static const struct {
+ uint16_t nid;
+ uint16_t ht;
+} _htmap[] = {
+ { 0, NS_HASH_NONE },
+#ifdef NID_md5WithRSAEncryption
+ { NID_md5WithRSAEncryption, NS_HASH_MD5 },
+#endif
+#ifdef NID_sha1WithRSAEncryption
+ { NID_sha1WithRSAEncryption, NS_HASH_SHA1 },
+#endif
+#ifdef NID_ecdsa_with_SHA1
+ { NID_ecdsa_with_SHA1, NS_HASH_SHA1 },
+#endif
+#ifdef NID_sha224WithRSAEncryption
+ { NID_sha224WithRSAEncryption, NS_HASH_SHA224 },
+#endif
+#ifdef NID_ecdsa_with_SHA224
+ { NID_ecdsa_with_SHA224, NS_HASH_SHA224 },
+#endif
+#ifdef NID_sha256WithRSAEncryption
+ { NID_sha256WithRSAEncryption, NS_HASH_SHA256 },
+#endif
+#ifdef NID_ecdsa_with_SHA256
+ { NID_ecdsa_with_SHA256, NS_HASH_SHA256 },
+#endif
+#ifdef NID_sha384WithRSAEncryption
+ { NID_sha384WithRSAEncryption, NS_HASH_SHA384 },
+#endif
+#ifdef NID_ecdsa_with_SHA384
+ { NID_ecdsa_with_SHA384, NS_HASH_SHA384 },
+#endif
+#ifdef NID_sha512WithRSAEncryption
+ { NID_sha512WithRSAEncryption, NS_HASH_SHA512 },
+#endif
+#ifdef NID_ecdsa_with_SHA512
+ { NID_ecdsa_with_SHA512, NS_HASH_SHA512 },
+#endif
+};
int
_nid2ht(int nid)
{
int i;
- for (i=1; i<= NS_HASH_MAX; ++i) {
- if (nid == _htmap[i])
- return i;
+
+ for (i = 0; i < sizeof(_htmap) / sizeof(_htmap[0]); i++) {
+ if (_htmap[i].nid == nid)
+ return _htmap[i].ht;
}
return 0;
}
@@ -541,9 +577,13 @@ _nid2ht(int nid)
int
_ht2nid(int ht)
{
- if ((ht < 0) || (ht > NS_HASH_MAX))
- return 0;
- return _htmap[ht];
+ int i;
+
+ for (i = 0; i < sizeof(_htmap) / sizeof(_htmap[0]); i++) {
+ if (_htmap[i].ht == ht)
+ return _htmap[i].nid;
+ }
+ return 0;
}
#endif /* NETSNMP_FEATURE_REMOVE_OPENSSL_HT2NID */