e70152e44cc66cc599ff6b699eb8adc07f3e656a
kent
  Sat May 24 21:09:34 2014 -0700
Adding Copyright NNNN Regents of the University of California to all files I believe with reasonable certainty were developed under UCSC employ or as part of Genome Browser copyright assignment.
diff --git src/lib/hmac.c src/lib/hmac.c
index 5e8c9aa..05509a1 100644
--- src/lib/hmac.c
+++ src/lib/hmac.c
@@ -1,22 +1,25 @@
 /* Calculate an openssl keyed-hash message authentication code (HMAC) */
 // You may use other openssl hash engines. e.g EVP_md5(), EVP_sha224,
 // EVP_sha512, etc
 // Be careful of the length of string with the choosen hash engine.
 // SHA1 needed 20 characters, MD5 needed 16 characters.
 // Change the length accordingly with your choosen hash engine
 
+/* Copyright (C) 2013 The Regents of the University of California 
+ * See README in this or parent directory for licensing information. */
+
 #ifdef USE_SSL 
 #include "openssl/hmac.h"
 #include "openssl/evp.h"
 #include "common.h"
 
 char *hmacSha1(char *key, char *data)
 /* Calculate a openssl SHA1 keyed-hash message authentication code (HMAC) */
 {
 unsigned char* digest;
 digest=HMAC(EVP_sha1(), key, strlen(key), (unsigned char*)data, strlen(data), NULL, NULL);
 char hmacStr[40];
 int i;
 for(i = 0; i < 20; i++)
     sprintf(&hmacStr[i*2], "%02x", (unsigned int)digest[i]);
 return cloneStringZ(hmacStr, sizeof(hmacStr));