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Fix memset calls in APR sha2 implementation 

The implementation clears the context / state data from memory when it
is finished with it.  Prior to this commit, however, it was actually
only clearing the first 4 bytes on x86 or 8 bytes on x86_64.

clang warns:

  warning: argument to 'sizeof' in 'memset' call is the same
  expression as the destination; did you mean to dereference it?
      [-Wsizeof-pointer-memaccess]
This commit is contained in:
Travis Cross 2012-06-24 08:05:25 +00:00
parent f1183ef970
commit a973fb6347
1 changed files with 6 additions and 6 deletions
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12
libs/apr/random/unix/sha2.c
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@ -557,7 +557,7 @@ void apr__SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
}
/* Clean up state data: */
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
usedspace = 0;
}
@ -578,7 +578,7 @@ char *apr__SHA256_End(SHA256_CTX* context, char buffer[]) {
}
*buffer = (char)0;
} else {
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
}
MEMSET_BZERO(digest, SHA256_DIGEST_LENGTH);
return buffer;
@ -889,7 +889,7 @@ void apr__SHA512_Final(sha2_byte digest[], SHA512_CTX* context) {
}
/* Zero out state data */
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
}
char *apr__SHA512_End(SHA512_CTX* context, char buffer[]) {
@ -909,7 +909,7 @@ char *apr__SHA512_End(SHA512_CTX* context, char buffer[]) {
}
*buffer = (char)0;
} else {
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
}
MEMSET_BZERO(digest, SHA512_DIGEST_LENGTH);
return buffer;
@ -964,7 +964,7 @@ void apr__SHA384_Final(sha2_byte digest[], SHA384_CTX* context) {
}
/* Zero out state data */
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
}
char *apr__SHA384_End(SHA384_CTX* context, char buffer[]) {
@ -984,7 +984,7 @@ char *apr__SHA384_End(SHA384_CTX* context, char buffer[]) {
}
*buffer = (char)0;
} else {
MEMSET_BZERO(context, sizeof(context));
MEMSET_BZERO(context, sizeof(*context));
}
MEMSET_BZERO(digest, SHA384_DIGEST_LENGTH);
return buffer;