Add statebytes for crypto_hmac_*

src/libsodium/crypto_auth/hmacsha256/auth_hmacsha256_api.c

@@ -9,3 +9,8 @@ size_t
 crypto_auth_hmacsha256_keybytes(void) {
     return crypto_auth_hmacsha256_KEYBYTES;
 }
+
+size_t
+crypto_auth_hmacsha256_statebytes(void) {
+    return sizeof(crypto_auth_hmacsha256_state);
+}

src/libsodium/crypto_auth/hmacsha512/auth_hmacsha512_api.c

@@ -9,3 +9,8 @@ size_t
 crypto_auth_hmacsha512_keybytes(void) {
     return crypto_auth_hmacsha512_KEYBYTES;
 }
+
+size_t
+crypto_auth_hmacsha512_statebytes(void) {
+    return sizeof(crypto_auth_hmacsha512_state);
+}

src/libsodium/crypto_auth/hmacsha512256/auth_hmacsha512256_api.c

@@ -9,3 +9,8 @@ size_t
 crypto_auth_hmacsha512256_keybytes(void) {
     return crypto_auth_hmacsha512256_KEYBYTES;
 }
+
+size_t
+crypto_auth_hmacsha512256_statebytes(void) {
+    return sizeof(crypto_auth_hmacsha512256_state);
+}

src/libsodium/include/sodium/crypto_auth_hmacsha256.h

@@ -16,6 +16,8 @@ typedef struct crypto_auth_hmacsha256_state {
     crypto_hash_sha256_state ictx;
     crypto_hash_sha256_state octx;
 } crypto_auth_hmacsha256_state;
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha256_statebytes(void);
 
 #define crypto_auth_hmacsha256_BYTES 32U
 SODIUM_EXPORT

src/libsodium/include/sodium/crypto_auth_hmacsha512.h

@@ -16,6 +16,8 @@ typedef struct crypto_auth_hmacsha512_state {
     crypto_hash_sha512_state ictx;
     crypto_hash_sha512_state octx;
 } crypto_auth_hmacsha512_state;
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha512_statebytes(void);
 
 #define crypto_auth_hmacsha512_BYTES 64U
 SODIUM_EXPORT

src/libsodium/include/sodium/crypto_auth_hmacsha512256.h

@@ -12,7 +12,9 @@
 extern "C" {
 #endif
 
-typedef struct crypto_auth_hmacsha512_state crypto_auth_hmacsha512256_state;
+typedef crypto_auth_hmacsha512_state crypto_auth_hmacsha512256_state;
+SODIUM_EXPORT
+size_t crypto_auth_hmacsha512256_statebytes(void);
 
 #define crypto_auth_hmacsha512256_BYTES 32U
 SODIUM_EXPORT

test/default/auth.c

@@ -17,6 +17,8 @@ int main(void)
     crypto_auth_hmacsha512_state st;
     int i;
 
+    assert(crypto_auth_hmacsha512_statebytes() ==
+           sizeof(crypto_auth_hmacsha512_state));
     crypto_auth(a, c, sizeof c - 1U, key);
     for (i = 0; i < sizeof a; ++i) {
         printf(",0x%02x", (unsigned int)a[i]);
@@ -55,6 +57,10 @@ int main(void)
     assert(crypto_auth_hmacsha512_keybytes() > 0U);
     assert(crypto_auth_hmacsha512256_bytes() == crypto_auth_bytes());
     assert(crypto_auth_hmacsha512256_keybytes() == crypto_auth_keybytes());
+    assert(crypto_auth_hmacsha256_statebytes() ==
+           sizeof(crypto_auth_hmacsha256_state));
+    assert(crypto_auth_hmacsha512_statebytes() ==
+           sizeof(crypto_auth_hmacsha512_state));
 
     return 0;
 }