diff options
Diffstat (limited to 'freebsd/sys/contrib/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna.c')
-rw-r--r-- | freebsd/sys/contrib/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/freebsd/sys/contrib/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna.c b/freebsd/sys/contrib/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna.c new file mode 100644 index 00000000..f7b0c244 --- /dev/null +++ b/freebsd/sys/contrib/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna.c @@ -0,0 +1,126 @@ +#include <machine/rtems-bsd-kernel-space.h> + + +#include "poly1305_donna.h" +#include "crypto_verify_16.h" +#include "private/common.h" +#include "utils.h" + +#ifdef HAVE_TI_MODE +#include "poly1305_donna64.h" +#else +#include "poly1305_donna32.h" +#endif +#include "../onetimeauth_poly1305.h" + +static void +poly1305_update(poly1305_state_internal_t *st, const unsigned char *m, + unsigned long long bytes) +{ + unsigned long long i; + + /* handle leftover */ + if (st->leftover) { + unsigned long long want = (poly1305_block_size - st->leftover); + + if (want > bytes) { + want = bytes; + } + for (i = 0; i < want; i++) { + st->buffer[st->leftover + i] = m[i]; + } + bytes -= want; + m += want; + st->leftover += want; + if (st->leftover < poly1305_block_size) { + return; + } + poly1305_blocks(st, st->buffer, poly1305_block_size); + st->leftover = 0; + } + + /* process full blocks */ + if (bytes >= poly1305_block_size) { + unsigned long long want = (bytes & ~(poly1305_block_size - 1)); + + poly1305_blocks(st, m, want); + m += want; + bytes -= want; + } + + /* store leftover */ + if (bytes) { + for (i = 0; i < bytes; i++) { + st->buffer[st->leftover + i] = m[i]; + } + st->leftover += bytes; + } +} + +static int +crypto_onetimeauth_poly1305_donna(unsigned char *out, const unsigned char *m, + unsigned long long inlen, + const unsigned char *key) +{ + CRYPTO_ALIGN(64) poly1305_state_internal_t state; + + poly1305_init(&state, key); + poly1305_update(&state, m, inlen); + poly1305_finish(&state, out); + + return 0; +} + +static int +crypto_onetimeauth_poly1305_donna_init(crypto_onetimeauth_poly1305_state *state, + const unsigned char *key) +{ + COMPILER_ASSERT(sizeof(crypto_onetimeauth_poly1305_state) >= + sizeof(poly1305_state_internal_t)); + poly1305_init((poly1305_state_internal_t *) (void *) state, key); + + return 0; +} + +static int +crypto_onetimeauth_poly1305_donna_update( + crypto_onetimeauth_poly1305_state *state, const unsigned char *in, + unsigned long long inlen) +{ + poly1305_update((poly1305_state_internal_t *) (void *) state, in, inlen); + + return 0; +} + +static int +crypto_onetimeauth_poly1305_donna_final( + crypto_onetimeauth_poly1305_state *state, unsigned char *out) +{ + poly1305_finish((poly1305_state_internal_t *) (void *) state, out); + + return 0; +} + +static int +crypto_onetimeauth_poly1305_donna_verify(const unsigned char *h, + const unsigned char *in, + unsigned long long inlen, + const unsigned char *k) +{ + unsigned char correct[16]; + + crypto_onetimeauth_poly1305_donna(correct, in, inlen, k); + + return crypto_verify_16(h, correct); +} + +struct crypto_onetimeauth_poly1305_implementation + crypto_onetimeauth_poly1305_donna_implementation = { + SODIUM_C99(.onetimeauth =) crypto_onetimeauth_poly1305_donna, + SODIUM_C99(.onetimeauth_verify =) + crypto_onetimeauth_poly1305_donna_verify, + SODIUM_C99(.onetimeauth_init =) crypto_onetimeauth_poly1305_donna_init, + SODIUM_C99(.onetimeauth_update =) + crypto_onetimeauth_poly1305_donna_update, + SODIUM_C99(.onetimeauth_final =) crypto_onetimeauth_poly1305_donna_final + }; |