[multiple] use <algo>_iov() digest funcs

reduce code duplication
make it easier to add new algos

mod_authn_file:
- leverage r->tmp_buf instead of temporary allocating buffer_init()
- mod_authn_file_htpasswd_basic()
  - compare binary SHA1 (shorter) rather than base64 (longer)
  - split crypt() from mod_authn_file_htpasswd_basic() to separate func
  - apr_md5_encode() modifications for slightly better performance

1 files changed, 2 insertions, 5 deletions

diff --git a/src/algo_hmac.c b/src/algo_hmac.c
index e7fd2c09..c9259b8a 100644
--- a/src/algo_hmac.c
+++ b/src/algo_hmac.c
@@ -65,11 +65,8 @@ li_hmac_md5 (unsigned char digest[MD5_DIGEST_LENGTH],
              const void * const secret, const uint32_t slen,
              const unsigned char * const msg, const uint32_t mlen)
 {
-    li_MD5_CTX Md5Ctx;
-    li_MD5_Init(&Md5Ctx);
-    li_MD5_Update(&Md5Ctx, secret, slen);
-    li_MD5_Update(&Md5Ctx, msg, mlen);
-    li_MD5_Final(digest, &Md5Ctx);
+    struct const_iovec iov[] = { { secret, slen }, { msg, mlen } };
+    MD5_iov(digest, iov, sizeof(iov)/sizeof(*iov));
     return 1;
 }