X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/putty/blobdiff_plain/eaf1e20af0294d79a176d2ac3b35fd4143163051..3ee4eedaec9cad4b5b2ff0f40567fa2e57a942a9:/sshdss.c

diff --git a/sshdss.c b/sshdss.c
index 22992fea..6cf5830d 100644
--- a/sshdss.c
+++ b/sshdss.c
@@ -20,7 +20,7 @@ static void sha_mpint(SHA_State * s, Bignum b)
 	lenbuf[0] = bignum_byte(b, len);
 	SHA_Bytes(s, lenbuf, 1);
     }
-    memset(lenbuf, 0, sizeof(lenbuf));
+    smemclr(lenbuf, sizeof(lenbuf));
 }
 
 static void sha512_mpint(SHA512_State * s, Bignum b)
@@ -34,7 +34,7 @@ static void sha512_mpint(SHA512_State * s, Bignum b)
 	lenbuf[0] = bignum_byte(b, len);
 	SHA512_Bytes(s, lenbuf, 1);
     }
-    memset(lenbuf, 0, sizeof(lenbuf));
+    smemclr(lenbuf, sizeof(lenbuf));
 }
 
 static void getstring(char **data, int *datalen, char **p, int *length)
@@ -231,14 +231,14 @@ static int dss_verifysig(void *key, char *sig, int siglen,
 #endif
     /*
      * Commercial SSH (2.0.13) and OpenSSH disagree over the format
-     * of a DSA signature. OpenSSH is in line with the IETF drafts:
+     * of a DSA signature. OpenSSH is in line with RFC 4253:
      * it uses a string "ssh-dss", followed by a 40-byte string
      * containing two 160-bit integers end-to-end. Commercial SSH
      * can't be bothered with the header bit, and considers a DSA
      * signature blob to be _just_ the 40-byte string containing
      * the two 160-bit integers. We tell them apart by measuring
      * the length: length 40 means the commercial-SSH bug, anything
-     * else is assumed to be IETF-compliant.
+     * else is assumed to be RFC-compliant.
      */
     if (siglen != 40) {		       /* bug not present; read admin fields */
 	getstring(&sig, &siglen, &p, &slen);
@@ -575,7 +575,7 @@ static unsigned char *dss_sign(void *key, char *data, int datalen, int *siglen)
     SHA512_Bytes(&ss, digest, sizeof(digest));
     SHA512_Final(&ss, digest512);
 
-    memset(&ss, 0, sizeof(ss));
+    smemclr(&ss, sizeof(ss));
 
     /*
      * Now convert the result into a bignum, and reduce it mod q.
@@ -584,7 +584,7 @@ static unsigned char *dss_sign(void *key, char *data, int datalen, int *siglen)
     k = bigmod(proto_k, dss->q);
     freebn(proto_k);
 
-    memset(digest512, 0, sizeof(digest512));
+    smemclr(digest512, sizeof(digest512));
 
     /*
      * Now we have k, so just go ahead and compute the signature.