vendor/libsodium/src/libsodium/include/sodium/crypto_stream_chacha20.h in rbnacl-libsodium-1.0.3 vs vendor/libsodium/src/libsodium/include/sodium/crypto_stream_chacha20.h in rbnacl-libsodium-1.0.4

@@ -26,10 +26,12 @@
 
 #define crypto_stream_chacha20_NONCEBYTES 8U
 SODIUM_EXPORT
 size_t crypto_stream_chacha20_noncebytes(void);
 
+/* ChaCha20 with a 64-bit nonce and a 64-bit counter, as originally designed */
+
 SODIUM_EXPORT
 int crypto_stream_chacha20(unsigned char *c, unsigned long long clen,
                            const unsigned char *n, const unsigned char *k);
 
 SODIUM_EXPORT
@@ -40,9 +42,30 @@
 SODIUM_EXPORT
 int crypto_stream_chacha20_xor_ic(unsigned char *c, const unsigned char *m,
                                   unsigned long long mlen,
                                   const unsigned char *n, uint64_t ic,
                                   const unsigned char *k);
+
+/* ChaCha20 with a 96-bit nonce and a 32-bit counter (IETF) */
+
+#define crypto_stream_chacha20_IETF_NONCEBYTES 12U
+SODIUM_EXPORT
+size_t crypto_stream_chacha20_ietf_noncebytes(void);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf(unsigned char *c, unsigned long long clen,
+                                const unsigned char *n, const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf_xor(unsigned char *c, const unsigned char *m,
+                                    unsigned long long mlen, const unsigned char *n,
+                                    const unsigned char *k);
+
+SODIUM_EXPORT
+int crypto_stream_chacha20_ietf_xor_ic(unsigned char *c, const unsigned char *m,
+                                       unsigned long long mlen,
+                                       const unsigned char *n, uint32_t ic,
+                                       const unsigned char *k);
 #ifdef __cplusplus
 }
 #endif
 
 #endif