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Add generic message authentication interface

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Add generic interface for generating and verifying MACs (message
authentication codes). Replace multiple HMAC implementation with
a generic one.
This commit is contained in:
Ondrej Zajicek (work)
2016-10-25 17:04:17 +02:00
parent 7eec398875
commit de2a27e255
16 changed files with 493 additions and 543 deletions
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5
proto/rip/packets.c
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@@ -11,6 +11,7 @@
#include "rip.h"
#include "lib/md5.h"
#include "lib/mac.h"
#define RIP_CMD_REQUEST 1 /* want info */
@@ -241,7 +242,7 @@ rip_fill_authentication(struct rip_proto *p, struct rip_iface *ifa, struct rip_p
*plen += sizeof(struct rip_auth_tail) + RIP_MD5_LENGTH;
struct md5_context ctx;
struct hash_context ctx;
md5_init(&ctx);
md5_update(&ctx, (byte *) pkt, *plen);
memcpy(tail->auth_data, md5_final(&ctx), RIP_MD5_LENGTH);
@@ -315,7 +316,7 @@ rip_check_authentication(struct rip_proto *p, struct rip_iface *ifa, struct rip_
memcpy(received, tail->auth_data, RIP_MD5_LENGTH);
strncpy(tail->auth_data, pass->password, RIP_MD5_LENGTH);
struct md5_context ctx;
struct hash_context ctx;
md5_init(&ctx);
md5_update(&ctx, (byte *) pkt, *plen);
char *computed = md5_final(&ctx);