1 files changed, 93 insertions, 0 deletions
diff --git a/libs/libsodium/src/crypto_auth/hmacsha512256/auth_hmacsha512256.c b/libs/libsodium/src/crypto_auth/hmacsha512256/auth_hmacsha512256.c
new file mode 100644
index 0000000000..432d6dbee5
--- /dev/null
+++ b/libs/libsodium/src/crypto_auth/hmacsha512256/auth_hmacsha512256.c
@@ -0,0 +1,93 @@
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "crypto_auth_hmacsha512.h"
+#include "crypto_auth_hmacsha512256.h"
+#include "crypto_hash_sha512.h"
+#include "crypto_verify_32.h"
+#include "randombytes.h"
+#include "utils.h"
+
+size_t
+crypto_auth_hmacsha512256_bytes(void)
+{
+    return crypto_auth_hmacsha512256_BYTES;
+}
+
+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);
+}
+
+void
+crypto_auth_hmacsha512256_keygen(
+    unsigned char k[crypto_auth_hmacsha512256_KEYBYTES])
+{
+    randombytes_buf(k, crypto_auth_hmacsha512256_KEYBYTES);
+}
+
+int
+crypto_auth_hmacsha512256_init(crypto_auth_hmacsha512256_state *state,
+                               const unsigned char *key, size_t keylen)
+{
+    return crypto_auth_hmacsha512_init((crypto_auth_hmacsha512_state *) state,
+                                       key, keylen);
+}
+
+int
+crypto_auth_hmacsha512256_update(crypto_auth_hmacsha512256_state *state,
+                                 const unsigned char             *in,
+                                 unsigned long long               inlen)
+{
+    return crypto_auth_hmacsha512_update((crypto_auth_hmacsha512_state *) state,
+                                         in, inlen);
+}
+
+int
+crypto_auth_hmacsha512256_final(crypto_auth_hmacsha512256_state *state,
+                                unsigned char                   *out)
+{
+    unsigned char out0[64];
+
+    crypto_auth_hmacsha512_final((crypto_auth_hmacsha512_state *) state, out0);
+    memcpy(out, out0, 32);
+
+    return 0;
+}
+
+int
+crypto_auth_hmacsha512256(unsigned char *out, const unsigned char *in,
+                          unsigned long long inlen, const unsigned char *k)
+{
+    crypto_auth_hmacsha512256_state state;
+
+    crypto_auth_hmacsha512256_init(&state, k,
+                                   crypto_auth_hmacsha512256_KEYBYTES);
+    crypto_auth_hmacsha512256_update(&state, in, inlen);
+    crypto_auth_hmacsha512256_final(&state, out);
+
+    return 0;
+}
+
+int
+crypto_auth_hmacsha512256_verify(const unsigned char *h,
+                                 const unsigned char *in,
+                                 unsigned long long   inlen,
+                                 const unsigned char *k)
+{
+    unsigned char correct[32];
+
+    crypto_auth_hmacsha512256(correct, in, inlen, k);
+
+    return crypto_verify_32(h, correct) | (-(h == correct)) |
+           sodium_memcmp(correct, h, 32);
+}