X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sshmd5.c;h=b39dfd3e52dba4a399706c3769193c05ff738168;hb=9f9d72ec58642e91b4f93ee4405a8086ee2fb2f0;hp=b7a03b5e13367d820854c72fd0d08d05a4ddf09a;hpb=9d5a16402168f82ba1bd695c3e95bb4812ccd0a9;p=PuTTY.git

diff --git a/sshmd5.c b/sshmd5.c
index b7a03b5e..b39dfd3e 100644
--- a/sshmd5.c
+++ b/sshmd5.c
@@ -210,6 +210,7 @@ void MD5Simple(void const *p, unsigned len, unsigned char output[16])
     MD5Init(&s);
     MD5Update(&s, (unsigned char const *)p, len);
     MD5Final(output, &s);
+    smemclr(&s, sizeof(s));
 }
 
 /* ----------------------------------------------------------------------
@@ -220,13 +221,14 @@ void MD5Simple(void const *p, unsigned len, unsigned char output[16])
  * useful elsewhere (SOCKS5 CHAP authentication uses HMAC-MD5).
  */
 
-void *hmacmd5_make_context(void)
+void *hmacmd5_make_context(void *cipher_ctx)
 {
     return snewn(3, struct MD5Context);
 }
 
 void hmacmd5_free_context(void *handle)
 {
+    smemclr(handle, 3*sizeof(struct MD5Context));
     sfree(handle);
 }
 
@@ -335,6 +337,6 @@ const struct ssh_mac ssh_hmac_md5 = {
     hmacmd5_generate, hmacmd5_verify,
     hmacmd5_start, hmacmd5_bytes, hmacmd5_genresult, hmacmd5_verresult,
     "hmac-md5", "hmac-md5-etm@openssh.com",
-    16,
+    16, 16,
     "HMAC-MD5"
 };