All the crypto_pwhash_* macros do not need to be exposed.

src/libsodium/crypto_pwhash/scryptxsalsa208sha256/crypto_scrypt-common.c

@@ -26,11 +26,6 @@
 #include "runtime.h"
 #include "utils.h"
 
-#define BYTES2CHARS(bytes) \
-        ((((bytes) * 8) + 5) / 6)
-
-#define HASH_LEN BYTES2CHARS(crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES) /* base-64 chars */
-
 static const char * const itoa64 =
     "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 
@@ -153,7 +148,8 @@ escrypt_r(escrypt_local_t * local, const uint8_t * passwd, size_t passwdlen,
     } else {
         saltlen = strlen((char *)salt);
     }
-    need = prefixlen + saltlen + 1 + HASH_LEN + 1;
+    need = prefixlen + saltlen + 1 +
+        crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES_ENCODED + 1;
     if (need > buflen || need < saltlen) {
         return NULL;
     }

src/libsodium/crypto_pwhash/scryptxsalsa208sha256/crypto_scrypt.h

@@ -32,6 +32,15 @@
 
 #include <stdint.h>
 
+#define crypto_pwhash_scryptxsalsa208sha256_STRPREFIXBYTES 14
+#define crypto_pwhash_scryptxsalsa208sha256_STRSETTINGBYTES 57
+#define crypto_pwhash_scryptxsalsa208sha256_STRSALTBYTES 32
+#define crypto_pwhash_scryptxsalsa208sha256_STRSALTBYTES_ENCODED 43
+#define crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES 32
+#define crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES_ENCODED 43
+
+#define BYTES2CHARS(bytes) ((((bytes) * 8) + 5) / 6)
+
 /**
  * crypto_scrypt_compat(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
  * Compute scrypt(passwd[0 .. passwdlen - 1], salt[0 .. saltlen - 1], N, r,

src/libsodium/crypto_pwhash/scryptxsalsa208sha256/pwhash_scryptxsalsa208sha256.c

@@ -8,7 +8,6 @@
 #include "crypto_scrypt.h"
 #include "randombytes.h"
 
-#define BYTES2CHARS(bytes) ((((bytes) * 8) + 5) / 6)
 #define SETTING_SIZE(saltbytes) \
     (sizeof "$7$" - 1U) + \
     (1U /* N_log2 */) + (5U /* r */) + (5U /* p */) + BYTES2CHARS(saltbytes)

src/libsodium/include/sodium/crypto_pwhash_scryptxsalsa208sha256.h

@@ -8,12 +8,6 @@
 
 #define crypto_pwhash_scryptxsalsa208sha256_SALTBYTES 32
 #define crypto_pwhash_scryptxsalsa208sha256_STRBYTES 102
-#define crypto_pwhash_scryptxsalsa208sha256_STRPREFIXBYTES 14
-#define crypto_pwhash_scryptxsalsa208sha256_STRSETTINGBYTES 57
-#define crypto_pwhash_scryptxsalsa208sha256_STRSALTBYTES 32
-#define crypto_pwhash_scryptxsalsa208sha256_STRSALTBYTES_ENCODED 43
-#define crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES 32
-#define crypto_pwhash_scryptxsalsa208sha256_STRHASHBYTES_ENCODED 43
 
 #ifdef __cplusplus
 # if __GNUC__