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      1 
      2 #include "onetimeauth_poly1305.h"
      3 #include "crypto_onetimeauth_poly1305.h"
      4 #include "private/common.h"
      5 #include "private/implementations.h"
      6 #include "randombytes.h"
      7 #include "runtime.h"
      8 
      9 #include "donna/poly1305_donna.h"
     10 #if defined(HAVE_TI_MODE) && defined(HAVE_EMMINTRIN_H)
     11 # include "sse2/poly1305_sse2.h"
     12 #endif
     13 
     14 static const crypto_onetimeauth_poly1305_implementation *implementation =
     15     &crypto_onetimeauth_poly1305_donna_implementation;
     16 
     17 int
     18 crypto_onetimeauth_poly1305(unsigned char *out, const unsigned char *in,
     19                             unsigned long long inlen, const unsigned char *k)
     20 {
     21     return implementation->onetimeauth(out, in, inlen, k);
     22 }
     23 
     24 int
     25 crypto_onetimeauth_poly1305_verify(const unsigned char *h,
     26                                    const unsigned char *in,
     27                                    unsigned long long   inlen,
     28                                    const unsigned char *k)
     29 {
     30     return implementation->onetimeauth_verify(h, in, inlen, k);
     31 }
     32 
     33 int
     34 crypto_onetimeauth_poly1305_init(crypto_onetimeauth_poly1305_state *state,
     35                                  const unsigned char *key)
     36 {
     37     return implementation->onetimeauth_init(state, key);
     38 }
     39 
     40 int
     41 crypto_onetimeauth_poly1305_update(crypto_onetimeauth_poly1305_state *state,
     42                                    const unsigned char *in,
     43                                    unsigned long long inlen)
     44 {
     45     return implementation->onetimeauth_update(state, in, inlen);
     46 }
     47 
     48 int
     49 crypto_onetimeauth_poly1305_final(crypto_onetimeauth_poly1305_state *state,
     50                                   unsigned char *out)
     51 {
     52     return implementation->onetimeauth_final(state, out);
     53 }
     54 
     55 size_t
     56 crypto_onetimeauth_poly1305_bytes(void)
     57 {
     58     return crypto_onetimeauth_poly1305_BYTES;
     59 }
     60 
     61 size_t
     62 crypto_onetimeauth_poly1305_keybytes(void)
     63 {
     64     return crypto_onetimeauth_poly1305_KEYBYTES;
     65 }
     66 
     67 size_t
     68 crypto_onetimeauth_poly1305_statebytes(void)
     69 {
     70     return sizeof(crypto_onetimeauth_poly1305_state);
     71 }
     72 
     73 void
     74 crypto_onetimeauth_poly1305_keygen(
     75     unsigned char k[crypto_onetimeauth_poly1305_KEYBYTES])
     76 {
     77     randombytes_buf(k, crypto_onetimeauth_poly1305_KEYBYTES);
     78 }
     79 
     80 int
     81 _crypto_onetimeauth_poly1305_pick_best_implementation(void)
     82 {
     83     implementation = &crypto_onetimeauth_poly1305_donna_implementation;
     84 #if defined(HAVE_TI_MODE) && defined(HAVE_EMMINTRIN_H)
     85     if (sodium_runtime_has_sse2()) {
     86         implementation = &crypto_onetimeauth_poly1305_sse2_implementation;
     87     }
     88 #endif
     89     return 0;
     90 }
     91