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87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
#include <sodium/crypto_stream_salsa20.h>
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#include <sodium/private/common.h>
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#include <sodium/private/implementations.h>
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#include <sodium/randombytes.h>
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#include <sodium/runtime.h>
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#include "stream_salsa20.h"
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#include "xmm6/salsa20_xmm6.h"
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#include "ref/salsa20_ref.h"
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#include "xmm6int/salsa20_xmm6int-sse2.h"
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#include "xmm6int/salsa20_xmm6int-avx2.h"
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static crypto_stream_salsa20_implementation *implementation = NULL;
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size_t
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crypto_stream_salsa20_keybytes(void)
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{
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return crypto_stream_salsa20_KEYBYTES;
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}
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size_t
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crypto_stream_salsa20_noncebytes(void)
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{
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return crypto_stream_salsa20_NONCEBYTES;
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}
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size_t
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crypto_stream_salsa20_messagebytes_max(void)
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{
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return crypto_stream_salsa20_MESSAGEBYTES_MAX;
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}
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int
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crypto_stream_salsa20(unsigned char *c, unsigned long long clen,
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const unsigned char *n, const unsigned char *k)
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{
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_crypto_stream_salsa20_pick_best_implementation();
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return implementation->stream(c, clen, n, k);
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}
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int
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crypto_stream_salsa20_xor_ic(unsigned char *c, const unsigned char *m,
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unsigned long long mlen, const unsigned char *n,
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uint64_t ic, const unsigned char *k)
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{
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_crypto_stream_salsa20_pick_best_implementation();
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return implementation->stream_xor_ic(c, m, mlen, n, ic, k);
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}
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int
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crypto_stream_salsa20_xor(unsigned char *c, const unsigned char *m,
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unsigned long long mlen, const unsigned char *n,
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const unsigned char *k)
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{
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_crypto_stream_salsa20_pick_best_implementation();
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return implementation->stream_xor_ic(c, m, mlen, n, 0U, k);
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}
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void
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crypto_stream_salsa20_keygen(unsigned char k[crypto_stream_salsa20_KEYBYTES])
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{
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randombytes_buf(k, crypto_stream_salsa20_KEYBYTES);
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}
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int
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_crypto_stream_salsa20_pick_best_implementation(void)
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{
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if(implementation)
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return 0;
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#if __AVX2__
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if(sodium_runtime_has_avx2())
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{
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implementation = &crypto_stream_salsa20_xmm6int_avx2_implementation;
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return 0;
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}
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#endif
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#if __SSE2__
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if(sodium_runtime_has_sse2())
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{
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implementation = &crypto_stream_salsa20_xmm6int_sse2_implementation;
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return 0;
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}
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#endif
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if(implementation == NULL)
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implementation = &crypto_stream_salsa20_ref_implementation;
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return 0; /* LCOV_EXCL_LINE */
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}
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