mirror of
https://github.com/kokke/tiny-AES-c
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56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
#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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// CBC enables AES encryption in CBC-mode of operation.
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// CTR enables encryption in counter-mode.
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// ECB enables the basic ECB 16-byte block algorithm. All 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 CBC
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#define CBC 1
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#endif
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#ifndef ECB
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#define ECB 1
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#endif
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#ifndef CTR
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#define CTR 1
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#endif
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#define AES128 1
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//#define AES192 1
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//#define AES256 1
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#if defined(ECB) && (ECB == 1)
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void AES_ECB_encrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
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void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length);
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#endif // #if defined(ECB) && (ECB == !)
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#if defined(CBC) && (CBC == 1)
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void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, 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, uint32_t length, const uint8_t* key, const uint8_t* iv);
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#endif // #if defined(CBC) && (CBC == 1)
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#if defined(CTR) && (CTR == 1)
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/* Same function for encrypting as for decrypting. Note no IV/nonce should ever be reused with the same key */
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void AES_CTR_xcrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* nonce);
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#endif // #if defined(CTR) && (CTR == 1)
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#endif //_AES_H_
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