+ crypto_hash_sha(256|512)_statebytes

src/libsodium/crypto_hash/sha256/hash_sha256_api.c

@@ -4,3 +4,8 @@ size_t
 crypto_hash_sha256_bytes(void) {
     return crypto_hash_sha256_BYTES;
 }
+
+size_t
+crypto_hash_sha256_statebytes(void) {
+    return sizeof(crypto_hash_sha256_state);
+}

src/libsodium/crypto_hash/sha512/hash_sha512_api.c

@@ -4,3 +4,8 @@ size_t
 crypto_hash_sha512_bytes(void) {
     return crypto_hash_sha512_BYTES;
 }
+
+size_t
+crypto_hash_sha512_statebytes(void) {
+    return sizeof(crypto_hash_sha512_state);
+}

src/libsodium/include/sodium/crypto_hash_sha256.h

@@ -26,6 +26,8 @@ typedef struct crypto_hash_sha256_state {
     uint32_t      count[2];
     unsigned char buf[64];
 } crypto_hash_sha256_state;
+SODIUM_EXPORT
+size_t crypto_hash_sha256_statebytes(void);
 
 #define crypto_hash_sha256_BYTES 32U
 SODIUM_EXPORT

src/libsodium/include/sodium/crypto_hash_sha512.h

@@ -26,6 +26,8 @@ typedef struct crypto_hash_sha512_state {
     uint64_t      count[2];
     unsigned char buf[128];
 } crypto_hash_sha512_state;
+SODIUM_EXPORT
+size_t crypto_hash_sha512_statebytes(void);
 
 #define crypto_hash_sha512_BYTES 64U
 SODIUM_EXPORT

test/default/hash.c

@@ -36,6 +36,8 @@ int main(void)
     assert(crypto_hash_sha256_bytes() > 0U);
     assert(crypto_hash_sha512_bytes() >= crypto_hash_sha256_bytes());
     assert(crypto_hash_sha512_bytes() == crypto_hash_bytes());
+    assert(crypto_hash_sha256_statebytes() == sizeof(crypto_hash_sha256_state));
+    assert(crypto_hash_sha512_statebytes() == sizeof(crypto_hash_sha512_state));
 
     return 0;
 }