Add chacha-sys crate (#4620)
* af9ff9c7f9/src/cpu-crypt
* Add chacha-sys crate
* Remove chacha feature
* Remove erasure feature
* Add .gitignore
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35
chacha-sys/cpu-crypt/chacha.h
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35
chacha-sys/cpu-crypt/chacha.h
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#ifndef HEADER_CHACHA_H
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# define HEADER_CHACHA_H
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#include <string.h>
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#include <inttypes.h>
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# include <stddef.h>
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# ifdef __cplusplus
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extern "C" {
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# endif
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typedef unsigned int u32;
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#define CHACHA_KEY_SIZE 32
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#define CHACHA_NONCE_SIZE 12
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#define CHACHA_BLOCK_SIZE 64
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#define CHACHA_ROUNDS 500
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void chacha20_encrypt(const u32 input[16],
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unsigned char output[64],
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int num_rounds);
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void chacha20_encrypt_ctr(const uint8_t *in, uint8_t *out, size_t in_len,
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const uint8_t key[CHACHA_KEY_SIZE], const uint8_t nonce[CHACHA_NONCE_SIZE],
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uint32_t counter);
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void chacha20_cbc128_encrypt(const unsigned char* in, unsigned char* out,
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uint32_t len, const uint8_t* key,
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unsigned char* ivec);
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# ifdef __cplusplus
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}
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# endif
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#endif
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