diff --git a/src/libsodium/Makefile.am b/src/libsodium/Makefile.am
index 90caf780..c5f51aba 100644
--- a/src/libsodium/Makefile.am
+++ b/src/libsodium/Makefile.am
@@ -31,6 +31,7 @@ libsodium_la_SOURCES = \
 	crypto_core/salsa208/core_salsa208_api.c \
 	crypto_core/salsa208/ref/api.h \
 	crypto_generichash/crypto_generichash.c \
+	crypto_generichash/blake2/generichash_blake2_api.c \
 	crypto_generichash/blake2/ref/api.h \
 	crypto_generichash/blake2/ref/blake2-impl.h \
 	crypto_generichash/blake2/ref/blake2.h \
@@ -51,6 +52,7 @@ libsodium_la_SOURCES = \
 	crypto_hashblocks/sha512/ref/api.h \
 	crypto_onetimeauth/crypto_onetimeauth.c \
 	crypto_onetimeauth/poly1305/onetimeauth_poly1305.c \
+	crypto_onetimeauth/poly1305/onetimeauth_poly1305_api.c \
 	crypto_onetimeauth/poly1305/onetimeauth_poly1305_try.c \
 	crypto_onetimeauth/poly1305/53/api.h \
 	crypto_onetimeauth/poly1305/53/auth_poly1305_53.c \
@@ -165,8 +167,10 @@ libsodium_la_SOURCES = \
 	crypto_stream/xsalsa20/ref/api.h \
 	crypto_stream/xsalsa20/ref/stream_xsalsa20.c \
 	crypto_stream/xsalsa20/ref/xor_xsalsa20.c \
+	crypto_verify/16/verify_16_api.c \
 	crypto_verify/16/ref/api.h \
 	crypto_verify/16/ref/verify_16.c \
+	crypto_verify/32/verify_32_api.c \
 	crypto_verify/32/ref/api.h \
 	crypto_verify/32/ref/verify_32.c \
 	randombytes/randombytes.c \
diff --git a/src/libsodium/crypto_generichash/blake2/generichash_blake2_api.c b/src/libsodium/crypto_generichash/blake2/generichash_blake2_api.c
new file mode 100644
index 00000000..c62693f6
--- /dev/null
+++ b/src/libsodium/crypto_generichash/blake2/generichash_blake2_api.c
@@ -0,0 +1,31 @@
+#include "crypto_generichash_blake2b.h"
+
+size_t
+crypto_generichash_blake2b_bytes_min(void) {
+    return crypto_generichash_blake2b_BYTES_MIN;
+}
+
+size_t
+crypto_generichash_blake2b_bytes_max(void) {
+    return crypto_generichash_blake2b_BYTES_MAX;
+}
+
+size_t
+crypto_generichash_blake2b_keybytes_min(void) {
+    return crypto_generichash_blake2b_KEYBYTES_MIN;
+}
+
+size_t
+crypto_generichash_blake2b_keybytes_max(void) {
+    return crypto_generichash_blake2b_KEYBYTES_MAX;
+}
+
+size_t
+crypto_generichash_blake2b_blockbytes(void) {
+    return crypto_generichash_blake2b_BLOCKBYTES;
+}
+
+const char *
+crypto_generichash_blake2b_blockbytes_primitive(void) {
+    return "blake2b";
+}
diff --git a/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_api.c b/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_api.c
new file mode 100644
index 00000000..bd36a1f6
--- /dev/null
+++ b/src/libsodium/crypto_onetimeauth/poly1305/onetimeauth_poly1305_api.c
@@ -0,0 +1,16 @@
+#include "crypto_onetimeauth_poly1305.h"
+
+size_t
+crypto_onetimeauth_poly1305_bytes(void) {
+    return crypto_onetimeauth_poly1305_BYTES;
+}
+
+size_t
+crypto_onetimeauth_poly1305_keybytes(void) {
+    return crypto_onetimeauth_poly1305_KEYBYTES;
+}
+
+const char *
+crypto_onetimeauth_poly1305_primitive(void) {
+    return "poly1305";
+}
diff --git a/src/libsodium/crypto_verify/16/verify_16_api.c b/src/libsodium/crypto_verify/16/verify_16_api.c
new file mode 100644
index 00000000..757f9b63
--- /dev/null
+++ b/src/libsodium/crypto_verify/16/verify_16_api.c
@@ -0,0 +1,6 @@
+#include "crypto_verify_16.h"
+
+size_t
+crypto_verify_16_bytes(void) {
+    return crypto_verify_16_BYTES;
+}
diff --git a/src/libsodium/crypto_verify/32/verify_32_api.c b/src/libsodium/crypto_verify/32/verify_32_api.c
new file mode 100644
index 00000000..6241c4d3
--- /dev/null
+++ b/src/libsodium/crypto_verify/32/verify_32_api.c
@@ -0,0 +1,6 @@
+#include "crypto_verify_32.h"
+
+size_t
+crypto_verify_32_bytes(void) {
+    return crypto_verify_32_BYTES;
+}
diff --git a/src/libsodium/include/sodium/crypto_generichash_blake2b.h b/src/libsodium/include/sodium/crypto_generichash_blake2b.h
index 0a560c2f..c48a7d13 100644
--- a/src/libsodium/include/sodium/crypto_generichash_blake2b.h
+++ b/src/libsodium/include/sodium/crypto_generichash_blake2b.h
@@ -3,6 +3,7 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <stddef.h>
 
 #include "export.h"
 
@@ -33,6 +34,24 @@ CRYPTO_ALIGN(64) typedef struct crypto_generichash_blake2b_state {
 } crypto_generichash_blake2b_state;
 #pragma pack(pop)
 
+SODIUM_EXPORT
+size_t crypto_generichash_blake2b_bytes_min(void);
+
+SODIUM_EXPORT
+size_t crypto_generichash_blake2b_bytes_max(void);
+
+SODIUM_EXPORT
+size_t crypto_generichash_blake2b_keybytes_min(void);
+
+SODIUM_EXPORT
+size_t crypto_generichash_blake2b_keybytes_max(void);
+
+SODIUM_EXPORT
+size_t crypto_generichash_blake2b_blockbytes(void);
+
+SODIUM_EXPORT
+const char * crypto_generichash_blake2b_blockbytes_primitive(void);
+
 SODIUM_EXPORT
 int crypto_generichash_blake2b(unsigned char *out, size_t outlen,
                                const unsigned char *in,
diff --git a/src/libsodium/include/sodium/crypto_onetimeauth_poly1305.h b/src/libsodium/include/sodium/crypto_onetimeauth_poly1305.h
index 70289b4d..19d55f18 100644
--- a/src/libsodium/include/sodium/crypto_onetimeauth_poly1305.h
+++ b/src/libsodium/include/sodium/crypto_onetimeauth_poly1305.h
@@ -1,6 +1,7 @@
 #ifndef crypto_onetimeauth_poly1305_H
 #define crypto_onetimeauth_poly1305_H
 
+#include <stddef.h>
 #include "export.h"
 
 #define crypto_onetimeauth_poly1305_BYTES 16U
@@ -26,6 +27,15 @@ typedef struct crypto_onetimeauth_poly1305_implementation {
                                       const unsigned char *k);
 } crypto_onetimeauth_poly1305_implementation;
 
+SODIUM_EXPORT
+size_t crypto_onetimeauth_poly1305_bytes(void);
+
+SODIUM_EXPORT
+size_t crypto_onetimeauth_poly1305_keybytes(void);
+
+SODIUM_EXPORT
+const char * crypto_onetimeauth_poly1305_primitive(void);
+
 SODIUM_EXPORT
 const char *crypto_onetimeauth_poly1305_ref_implementation_name(void);
 
diff --git a/src/libsodium/include/sodium/crypto_verify_16.h b/src/libsodium/include/sodium/crypto_verify_16.h
index 1c2c7b23..972a02f3 100644
--- a/src/libsodium/include/sodium/crypto_verify_16.h
+++ b/src/libsodium/include/sodium/crypto_verify_16.h
@@ -1,6 +1,7 @@
 #ifndef crypto_verify_16_H
 #define crypto_verify_16_H
 
+#include <stddef.h>
 #include "export.h"
 
 #define crypto_verify_16_BYTES 16U
@@ -9,6 +10,9 @@
 extern "C" {
 #endif
 
+SODIUM_EXPORT
+size_t crypto_verify_16_bytes(void);
+
 SODIUM_EXPORT
 int crypto_verify_16(const unsigned char *x, const unsigned char *y);
 
diff --git a/src/libsodium/include/sodium/crypto_verify_32.h b/src/libsodium/include/sodium/crypto_verify_32.h
index a76d1889..f3ada230 100644
--- a/src/libsodium/include/sodium/crypto_verify_32.h
+++ b/src/libsodium/include/sodium/crypto_verify_32.h
@@ -1,6 +1,7 @@
 #ifndef crypto_verify_32_H
 #define crypto_verify_32_H
 
+#include <stddef.h>
 #include "export.h"
 
 #define crypto_verify_32_BYTES 32U
@@ -9,6 +10,9 @@
 extern "C" {
 #endif
 
+SODIUM_EXPORT
+size_t crypto_verify_32_bytes(void);
+
 SODIUM_EXPORT
 int crypto_verify_32(const unsigned char *x, const unsigned char *y);