1 files changed, 40 insertions, 0 deletions
diff --git a/ext/standard/argon2lib/encoding.h b/ext/standard/argon2lib/encoding.h
new file mode 100644
index 0000000000..8671f6b3d6
--- /dev/null
+++ b/ext/standard/argon2lib/encoding.h
@@ -0,0 +1,40 @@
+#ifndef ENCODING_H
+#define ENCODING_H
+#include "argon2.h"
+
+#define ARGON2_MAX_DECODED_LANES UINT32_C(255)
+#define ARGON2_MIN_DECODED_SALT_LEN UINT32_C(8)
+#define ARGON2_MIN_DECODED_OUT_LEN UINT32_C(12)
+
+/*
+* encode an Argon2 hash string into the provided buffer. 'dst_len'
+* contains the size, in characters, of the 'dst' buffer; if 'dst_len'
+* is less than the number of required characters (including the
+* terminating 0), then this function returns ARGON2_ENCODING_ERROR.
+*
+* if ctx->outlen is 0, then the hash string will be a salt string
+* (no output). if ctx->saltlen is also 0, then the string will be a
+* parameter-only string (no salt and no output).
+*
+* on success, ARGON2_OK is returned.
+*
+* No other parameters are checked
+*/
+int encode_string(char *dst, size_t dst_len, argon2_context *ctx,
+                  argon2_type type);
+
+/*
+* Decodes an Argon2 hash string into the provided structure 'ctx'.
+* The fields ctx.saltlen, ctx.adlen, ctx.outlen set the maximal salt, ad, out
+* length values that are allowed; invalid input string causes an error.
+* Returned value is ARGON2_OK on success, other ARGON2_ codes on error.
+*/
+int decode_string(argon2_context *ctx, const char *str, argon2_type type);
+
+/* Returns the length of the encoded byte stream with length len */
+size_t b64len(uint32_t len);
+
+/* Returns the length of the encoded number num */
+size_t numlen(uint32_t num);
+
+#endif