sha3.[hc]: add cshake128 functions

1 files changed, 12 insertions, 0 deletions

diff --git a/sha3.h b/sha3.h
index c241758..56e151c 100644
--- a/sha3.h
+++ b/sha3.h
@@ -36,6 +36,18 @@ _Bool shake256_xof_absorb(sha3_xof_t * const xof, const uint8_t * const m, const
 void shake256_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t dst_len);
 void shake256_xof_once(const uint8_t * const src, const size_t src_len, uint8_t * const dst, const size_t dst_len);
 
+typedef struct {
+  const uint8_t * const name; // NIST function name
+  const size_t name_len; // length of NIST function name, in bytes
+  const uint8_t * const custom; // customization string
+  const size_t custom_len; // length of customization string, in bytes
+} cshake_params_t;
+
+void cshake128_xof_init(sha3_xof_t * const xof, const cshake_params_t params);
+_Bool cshake128_xof_absorb(sha3_xof_t * const xof, const uint8_t * const msg, const size_t len);
+void cshake128_xof_squeeze(sha3_xof_t * const xof, uint8_t * const dst, const size_t len);
+void cshake128(const cshake_params_t params, const uint8_t * const msg, const size_t msg_len, uint8_t * const dst, const size_t dst_len);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */