1 files changed, 23 insertions, 0 deletions

diff --git a/nacl/crypto_sign/wrapper-sign.cpp b/nacl/crypto_sign/wrapper-sign.cpp
new file mode 100644
index 00000000..f0624b76
--- /dev/null
+++ b/nacl/crypto_sign/wrapper-sign.cpp
@@ -0,0 +1,23 @@
+#include <string>
+using std::string;
+#include "crypto_sign.h"
+
+string crypto_sign(const string &m_string, const string &sk_string)
+{
+  if (sk_string.size() != crypto_sign_SECRETKEYBYTES) throw "incorrect secret-key length";
+  size_t mlen = m_string.size();
+  unsigned char m[mlen+crypto_sign_BYTES];
+  unsigned long long smlen;
+  for (int i = 0;i < mlen;++i) m[i] = m_string[i];
+  crypto_sign(
+      m, 
+      &smlen, 
+      m, 
+      mlen, 
+      (const unsigned char *) sk_string.c_str()
+      );
+  return string(
+      (char *) m,
+      smlen
+  );
+}