diff options
Diffstat (limited to 'libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c')
| -rw-r--r-- | libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c | 236 |
1 files changed, 118 insertions, 118 deletions
diff --git a/libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c b/libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c index a951e932b8..63ca1cfb64 100644 --- a/libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c +++ b/libs/libsodium/src/crypto_auth/hmacsha256/auth_hmacsha256.c @@ -1,118 +1,118 @@ - -#include <stddef.h> -#include <stdint.h> -#include <string.h> - -#include "crypto_auth_hmacsha256.h" -#include "crypto_hash_sha256.h" -#include "crypto_verify_32.h" -#include "randombytes.h" -#include "utils.h" - -size_t -crypto_auth_hmacsha256_bytes(void) -{ - return crypto_auth_hmacsha256_BYTES; -} - -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); -} - -void -crypto_auth_hmacsha256_keygen(unsigned char k[crypto_auth_hmacsha256_KEYBYTES]) -{ - randombytes_buf(k, crypto_auth_hmacsha256_KEYBYTES); -} - -int -crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state, - const unsigned char *key, size_t keylen) -{ - unsigned char pad[64]; - unsigned char khash[32]; - size_t i; - - if (keylen > 64) { - crypto_hash_sha256_init(&state->ictx); - crypto_hash_sha256_update(&state->ictx, key, keylen); - crypto_hash_sha256_final(&state->ictx, khash); - key = khash; - keylen = 32; - } - crypto_hash_sha256_init(&state->ictx); - memset(pad, 0x36, 64); - for (i = 0; i < keylen; i++) { - pad[i] ^= key[i]; - } - crypto_hash_sha256_update(&state->ictx, pad, 64); - - crypto_hash_sha256_init(&state->octx); - memset(pad, 0x5c, 64); - for (i = 0; i < keylen; i++) { - pad[i] ^= key[i]; - } - crypto_hash_sha256_update(&state->octx, pad, 64); - - sodium_memzero((void *) pad, sizeof pad); - sodium_memzero((void *) khash, sizeof khash); - - return 0; -} - -int -crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state, - const unsigned char *in, unsigned long long inlen) -{ - crypto_hash_sha256_update(&state->ictx, in, inlen); - - return 0; -} - -int -crypto_auth_hmacsha256_final(crypto_auth_hmacsha256_state *state, - unsigned char *out) -{ - unsigned char ihash[32]; - - crypto_hash_sha256_final(&state->ictx, ihash); - crypto_hash_sha256_update(&state->octx, ihash, 32); - crypto_hash_sha256_final(&state->octx, out); - - sodium_memzero((void *) ihash, sizeof ihash); - - return 0; -} - -int -crypto_auth_hmacsha256(unsigned char *out, const unsigned char *in, - unsigned long long inlen, const unsigned char *k) -{ - crypto_auth_hmacsha256_state state; - - crypto_auth_hmacsha256_init(&state, k, crypto_auth_hmacsha256_KEYBYTES); - crypto_auth_hmacsha256_update(&state, in, inlen); - crypto_auth_hmacsha256_final(&state, out); - - return 0; -} - -int -crypto_auth_hmacsha256_verify(const unsigned char *h, const unsigned char *in, - unsigned long long inlen, const unsigned char *k) -{ - unsigned char correct[32]; - - crypto_auth_hmacsha256(correct, in, inlen, k); - - return crypto_verify_32(h, correct) | (-(h == correct)) | - sodium_memcmp(correct, h, 32); -} +
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "crypto_auth_hmacsha256.h"
+#include "crypto_hash_sha256.h"
+#include "crypto_verify_32.h"
+#include "randombytes.h"
+#include "utils.h"
+
+size_t
+crypto_auth_hmacsha256_bytes(void)
+{
+ return crypto_auth_hmacsha256_BYTES;
+}
+
+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);
+}
+
+void
+crypto_auth_hmacsha256_keygen(unsigned char k[crypto_auth_hmacsha256_KEYBYTES])
+{
+ randombytes_buf(k, crypto_auth_hmacsha256_KEYBYTES);
+}
+
+int
+crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state,
+ const unsigned char *key, size_t keylen)
+{
+ unsigned char pad[64];
+ unsigned char khash[32];
+ size_t i;
+
+ if (keylen > 64) {
+ crypto_hash_sha256_init(&state->ictx);
+ crypto_hash_sha256_update(&state->ictx, key, keylen);
+ crypto_hash_sha256_final(&state->ictx, khash);
+ key = khash;
+ keylen = 32;
+ }
+ crypto_hash_sha256_init(&state->ictx);
+ memset(pad, 0x36, 64);
+ for (i = 0; i < keylen; i++) {
+ pad[i] ^= key[i];
+ }
+ crypto_hash_sha256_update(&state->ictx, pad, 64);
+
+ crypto_hash_sha256_init(&state->octx);
+ memset(pad, 0x5c, 64);
+ for (i = 0; i < keylen; i++) {
+ pad[i] ^= key[i];
+ }
+ crypto_hash_sha256_update(&state->octx, pad, 64);
+
+ sodium_memzero((void *) pad, sizeof pad);
+ sodium_memzero((void *) khash, sizeof khash);
+
+ return 0;
+}
+
+int
+crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state,
+ const unsigned char *in, unsigned long long inlen)
+{
+ crypto_hash_sha256_update(&state->ictx, in, inlen);
+
+ return 0;
+}
+
+int
+crypto_auth_hmacsha256_final(crypto_auth_hmacsha256_state *state,
+ unsigned char *out)
+{
+ unsigned char ihash[32];
+
+ crypto_hash_sha256_final(&state->ictx, ihash);
+ crypto_hash_sha256_update(&state->octx, ihash, 32);
+ crypto_hash_sha256_final(&state->octx, out);
+
+ sodium_memzero((void *) ihash, sizeof ihash);
+
+ return 0;
+}
+
+int
+crypto_auth_hmacsha256(unsigned char *out, const unsigned char *in,
+ unsigned long long inlen, const unsigned char *k)
+{
+ crypto_auth_hmacsha256_state state;
+
+ crypto_auth_hmacsha256_init(&state, k, crypto_auth_hmacsha256_KEYBYTES);
+ crypto_auth_hmacsha256_update(&state, in, inlen);
+ crypto_auth_hmacsha256_final(&state, out);
+
+ return 0;
+}
+
+int
+crypto_auth_hmacsha256_verify(const unsigned char *h, const unsigned char *in,
+ unsigned long long inlen, const unsigned char *k)
+{
+ unsigned char correct[32];
+
+ crypto_auth_hmacsha256(correct, in, inlen, k);
+
+ return crypto_verify_32(h, correct) | (-(h == correct)) |
+ sodium_memcmp(correct, h, 32);
+}
|