default ChaCha to ChaCha20
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@ -35,6 +35,8 @@ int chacha_setup(chacha_state *st, const unsigned char *key, unsigned long keyle
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LTC_ARGCHK(key != NULL);
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LTC_ARGCHK(key != NULL);
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LTC_ARGCHK(keylen == 32 || keylen == 16);
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LTC_ARGCHK(keylen == 32 || keylen == 16);
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if (rounds == 0) rounds = 20;
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LOAD32L(st->input[4], key + 0);
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LOAD32L(st->input[4], key + 0);
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LOAD32L(st->input[5], key + 4);
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LOAD32L(st->input[5], key + 4);
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LOAD32L(st->input[6], key + 8);
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LOAD32L(st->input[6], key + 8);
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