1 files changed, 28 insertions, 0 deletions
diff --git a/host/utils/cdecode.h b/host/utils/cdecode.h
new file mode 100644
index 000000000..e1eee301f
--- /dev/null
+++ b/host/utils/cdecode.h
@@ -0,0 +1,28 @@
+/*
+cdecode.h - c header for a base64 decoding algorithm
+
+This is part of the libb64 project, and has been placed in the public domain.
+For details, see http://sourceforge.net/projects/libb64
+*/
+
+#ifndef BASE64_CDECODE_H
+#define BASE64_CDECODE_H
+
+#include <stddef.h>
+
+typedef enum{
+    step_a, step_b, step_c, step_d
+} base64_decodestep;
+
+typedef struct{
+    base64_decodestep step;
+    char plainchar;
+} base64_decodestate;
+
+void base64_init_decodestate(base64_decodestate* state_in);
+
+int base64_decode_value(char value_in);
+
+size_t base64_decode_block(const char* code_in, const size_t length_in, char* plaintext_out, base64_decodestate* state_in);
+
+#endif /* BASE64_CDECODE_H */