commit files needed for zpm-fetchurl

[zpackage] / crypto / hmac_message.c

diff --git a/crypto/hmac_message.c b/crypto/hmac_message.c
new file mode 100644 (file)
index 0000000..5f7249e
--- /dev/null
+++ b/crypto/hmac_message.c
@@ -0,0 +1,69 @@
+#define _POSIX_C_SOURCE 200809L
+
+#include <arpa/inet.h>
+
+#include "tlse.h"
+
+#ifndef htonll
+#define htonll(x) ((1==htonl(1)) ? (x) : ((uint64_t)htonl((x) & 0xFFFFFFFF) << 32) | htonl((x) >> 32))
+#endif
+
+#ifndef ntohll
+#define ntohll(x) ((1==ntohl(1)) ? (x) : ((uint64_t)ntohl((x) & 0xFFFFFFFF) << 32) | ntohl((x) >> 32))
+#endif
+
+unsigned int tls_hmac_message(unsigned char local,
+                              struct TLSContext *context,
+                              const unsigned char *buf,
+                              int buf_len,
+                              const unsigned char *buf2,
+                              int buf_len2, unsigned char *out,
+                              unsigned int outlen
+                              ) {
+       hmac_state hash;
+       int hash_idx;
+
+       int mac_size = outlen;
+
+       if (mac_size == TLS_SHA1_MAC_SIZE) {
+               hash_idx = find_hash("sha1");
+       } else if (mac_size == TLS_SHA384_MAC_SIZE) {
+               hash_idx = find_hash("sha384");
+       } else {
+               hash_idx = find_hash("sha256");
+       }
+
+       if (hmac_init(&hash, hash_idx,
+            local ? context->crypto.ctx_local_mac.local_mac : context->
+            crypto.ctx_remote_mac.remote_mac, mac_size)) {
+               return 0;
+       }
+
+       uint64_t sn;
+       if (local) {
+               sn = htonll(context->local_sequence_number);
+       } else {
+               sn = htonll(context->remote_sequence_number);
+       }
+
+       if (hmac_process(&hash, (unsigned char *)&sn, sizeof sn)) {
+               return 0;
+       }
+
+       if (hmac_process(&hash, buf, buf_len)) {
+               return 0;
+       }
+
+       if (buf2 && buf_len2) {
+               if (hmac_process(&hash, buf2, buf_len2)) {
+                       return 0;
+               }
+       }
+       unsigned long ref_outlen = outlen;
+       if (hmac_done(&hash, out, &ref_outlen)) {
+               return 0;
+       }
+
+       return (unsigned int)ref_outlen;
+}
+