libotputil: adding otputil_evp_md()

2 files changed, 27 insertions, 0 deletions

diff --git a/lib/libotputil/lmisc.c b/lib/libotputil/lmisc.c
index bbaa2fa..1c60269 100644
--- a/lib/libotputil/lmisc.c
+++ b/lib/libotputil/lmisc.c
@@ -95,6 +95,25 @@ otputil_err2string(
 }
 
 
+const EVP_MD *
+otputil_evp_md(
+         int                           id )
+{
+   switch(id)
+   {
+      case OTPUTIL_MD_MD4:       return(EVP_md4());
+      case OTPUTIL_MD_MD5:       return(EVP_md5());
+      case OTPUTIL_MD_SHA1:      return(EVP_sha1());
+      case OTPUTIL_MD_SHA256:    return(EVP_sha256());
+      case OTPUTIL_MD_SHA512:    return(EVP_sha512());
+      case OTPUTIL_MD_SHA3_256:  return(EVP_sha3_256());
+      case OTPUTIL_MD_SHA3_512:  return(EVP_sha3_512());
+      default: break;
+   };
+   return(NULL);
+}
+
+
 char *
 otputil_getpass(
          const char *                  prompt,
diff --git a/lib/libotputil/lmisc.h b/lib/libotputil/lmisc.h
index 66926de..36d18e3 100644
--- a/lib/libotputil/lmisc.h
+++ b/lib/libotputil/lmisc.h
@@ -41,6 +41,9 @@
 ///////////////
 #pragma mark - Headers
 
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+
 #include "libotputil.h"
 
 
@@ -51,6 +54,11 @@
 //////////////////
 #pragma mark - Prototypes
 
+extern const EVP_MD *
+otputil_evp_md(
+         int                           id );
+
+
 extern uintmax_t
 otputil_upow(
          uintmax_t                     base,