51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
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/*
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Source: https://github.com/kokke/tiny-AES-c
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This is an implementation of the AES algorithm, specifically ECB and CBC mode.
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*/
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#ifndef _AES_H_
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#define _AES_H_
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#include <stdint.h>
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// #define the macros below to 1/0 to enable/disable the mode of operation.
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//
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// AES_CBC enables AES encryption in CBC-mode of operation.
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// AES_ECB enables the basic ECB 16-byte block algorithm. Both can be enabled simultaneously.
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// The #ifndef-guard allows it to be configured before #include'ing or at compile time.
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#ifndef AES_CBC
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#define AES_CBC 1
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#endif
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#ifndef AES_ECB
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#define AES_ECB 1
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#endif
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#define AES_128 1
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//#define AES_192 1
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//#define AES_256 1
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#define AES_BLOCKLEN 16 //Block length in bytes AES is 128b block only
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#if defined(AES_ECB) && (AES_ECB == 1)
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void AES_ECB_encrypt(uint8_t *output, const uint8_t *input, const uint32_t length, const uint8_t *key);
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void AES_ECB_decrypt(uint8_t *output, const uint8_t *input, const uint32_t length, const uint8_t *key);
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#endif // #if defined(AES_ECB) && (AES_ECB == !)
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#if defined(AES_CBC) && (AES_CBC == 1)
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void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, const uint32_t length, const uint8_t* key, const uint8_t* iv);
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void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, const uint32_t length, const uint8_t* key, const uint8_t* iv);
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#endif // #if defined(AES_CBC) && (AES_CBC == 1)
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#endif //_AES_H_
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