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70 lines
1.4 KiB
70 lines
1.4 KiB
#ifndef _CC20_H
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#define _CC20_H
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#include <stdint.h>
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#include <stddef.h>
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#define KEY_SIZE 32
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#define IV_SIZE 12
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enum cc20_mode {
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CC20_ENCRYPT,
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CC20_DECRYPT,
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};
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typedef enum cc20_error {
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CC20_ERR_PANIC = -1,
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CC20_ERR_NONE = 0,
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CC20_ERR_INVALID_FILE,
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CC20_ERR_NULL_PTR,
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CC20_ERR_SSL,
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CC20_ERR_IO
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} cc20_result_t;
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#define CC20_OK(v) ((v)==CC20_ERR_NONE)
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#define CC20_ERR(v) ((v)!=CC20_ERR_NONE)
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typedef uint8_t cc20_key_t[KEY_SIZE];
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typedef uint8_t cc20_iv_t[IV_SIZE];
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typedef struct cc20_metadata {
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FILE* backing;
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cc20_key_t key;
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cc20_iv_t iv;
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enum cc20_mode mode;
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} cc20_meta_t;
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typedef struct cc20_sink cc20_sink_t;
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cc20_result_t cc20_keygen(cc20_key_t* restrict key,
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cc20_iv_t* restrict iv);
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cc20_result_t cc20_gen_meta(FILE* file,
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const cc20_key_t* key,
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const cc20_iv_t* iv,
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enum cc20_mode mode,
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struct cc20_metadata* restrict output);
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cc20_sink_t* cc20_gen_sink(const struct cc20_metadata* meta);
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cc20_sink_t* cc20_gen_sink_full(FILE* file,
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const cc20_key_t* key,
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const cc20_iv_t* iv,
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enum cc20_mode mode);
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FILE* cc20_wrap_full(FILE* file,
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const cc20_key_t* key,
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const cc20_iv_t* iv,
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enum cc20_mode mode);
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FILE* cc20_gen(const struct cc20_metadata* meta);
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cc20_result_t cc20_close_sink(cc20_sink_t* sink,
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struct cc20_metadata* restrict meta);
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FILE* cc20_wrap_sink(cc20_sink_t* sink);
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size_t cc20_write(const void* ptr, size_t size, size_t nmemb, cc20_sink_t* restrict sink);
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#endif /* _CC20_H */
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