-/*********************************************************************
-* Filename: aes.h
-* Author: Brad Conte (brad AT bradconte.com)
-* Copyright:
-* Disclaimer: This code is presented "as is" without any guarantees.
-* Details: Defines the API for the corresponding AES implementation.
-*********************************************************************/
-
-#ifndef AES_H
-#define AES_H
-
-/*************************** HEADER FILES ***************************/
-#include <stddef.h>
-
-/****************************** MACROS ******************************/
-#define AES_BLOCK_SIZE 16 // AES operates on 16 bytes at a time
-
-/**************************** DATA TYPES ****************************/
-typedef unsigned char BYTE; // 8-bit byte
-typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines
-
-/*********************** FUNCTION DECLARATIONS **********************/
-///////////////////
-// AES
-///////////////////
-// Key setup must be done before any AES en/de-cryption functions can be used.
-void _olm_aes_key_setup(const BYTE key[], // The key, must be 128, 192, or 256 bits
- WORD w[], // Output key schedule to be used later
- int keysize); // Bit length of the key, 128, 192, or 256
-
-void _olm_aes_encrypt(const BYTE in[], // 16 bytes of plaintext
- BYTE out[], // 16 bytes of ciphertext
- const WORD key[], // From the key setup
- int keysize); // Bit length of the key, 128, 192, or 256
-
-void _olm_aes_decrypt(const BYTE in[], // 16 bytes of ciphertext
- BYTE out[], // 16 bytes of plaintext
- const WORD key[], // From the key setup
- int keysize); // Bit length of the key, 128, 192, or 256
-
-///////////////////
-// AES - CBC
-///////////////////
-int _olm_aes_encrypt_cbc(const BYTE in[], // Plaintext
- size_t in_len, // Must be a multiple of AES_BLOCK_SIZE
- BYTE out[], // Ciphertext, same length as plaintext
- const WORD key[], // From the key setup
- int keysize, // Bit length of the key, 128, 192, or 256
- const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
-
-// Only output the CBC-MAC of the input.
-int _olm_aes_encrypt_cbc_mac(const BYTE in[], // plaintext
- size_t in_len, // Must be a multiple of AES_BLOCK_SIZE
- BYTE out[], // Output MAC
- const WORD key[], // From the key setup
- int keysize, // Bit length of the key, 128, 192, or 256
- const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
-
-///////////////////
-// AES - CTR
-///////////////////
-void increment_iv(BYTE iv[], // Must be a multiple of AES_BLOCK_SIZE
- int counter_size); // Bytes of the IV used for counting (low end)
-
-void _olm_aes_encrypt_ctr(const BYTE in[], // Plaintext
- size_t in_len, // Any byte length
- BYTE out[], // Ciphertext, same length as plaintext
- const WORD key[], // From the key setup
- int keysize, // Bit length of the key, 128, 192, or 256
- const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
-
-void _olm_aes_decrypt_ctr(const BYTE in[], // Ciphertext
- size_t in_len, // Any byte length
- BYTE out[], // Plaintext, same length as ciphertext
- const WORD key[], // From the key setup
- int keysize, // Bit length of the key, 128, 192, or 256
- const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
-
-///////////////////
-// AES - CCM
-///////////////////
-// Returns True if the input parameters do not violate any constraint.
-int _olm_aes_encrypt_ccm(const BYTE plaintext[], // IN - Plaintext.
- WORD plaintext_len, // IN - Plaintext length.
- const BYTE associated_data[], // IN - Associated Data included in authentication, but not encryption.
- unsigned short associated_data_len, // IN - Associated Data length in bytes.
- const BYTE nonce[], // IN - The Nonce to be used for encryption.
- unsigned short nonce_len, // IN - Nonce length in bytes.
- BYTE ciphertext[], // OUT - Ciphertext, a concatination of the plaintext and the MAC.
- WORD *ciphertext_len, // OUT - The length of the ciphertext, always plaintext_len + mac_len.
- WORD mac_len, // IN - The desired length of the MAC, must be 4, 6, 8, 10, 12, 14, or 16.
- const BYTE key[], // IN - The AES key for encryption.
- int keysize); // IN - The length of the key in bits. Valid values are 128, 192, 256.
-
-// Returns True if the input parameters do not violate any constraint.
-// Use mac_auth to ensure decryption/validation was preformed correctly.
-// If authentication does not succeed, the plaintext is zeroed out. To overwride
-// this, call with mac_auth = NULL. The proper proceedure is to decrypt with
-// authentication enabled (mac_auth != NULL) and make a second call to that
-// ignores authentication explicitly if the first call failes.
-int _olm_aes_decrypt_ccm(const BYTE ciphertext[], // IN - Ciphertext, the concatination of encrypted plaintext and MAC.
- WORD ciphertext_len, // IN - Ciphertext length in bytes.
- const BYTE assoc[], // IN - The Associated Data, required for authentication.
- unsigned short assoc_len, // IN - Associated Data length in bytes.
- const BYTE nonce[], // IN - The Nonce to use for decryption, same one as for encryption.
- unsigned short nonce_len, // IN - Nonce length in bytes.
- BYTE plaintext[], // OUT - The plaintext that was decrypted. Will need to be large enough to hold ciphertext_len - mac_len.
- WORD *plaintext_len, // OUT - Length in bytes of the output plaintext, always ciphertext_len - mac_len .
- WORD mac_len, // IN - The length of the MAC that was calculated.
- int *mac_auth, // OUT - TRUE if authentication succeeded, FALSE if it did not. NULL pointer will ignore the authentication.
- const BYTE key[], // IN - The AES key for decryption.
- int keysize); // IN - The length of the key in BITS. Valid values are 128, 192, 256.
-
-///////////////////
-// Test functions
-///////////////////
-int aes_test();
-int aes_ecb_test();
-int aes_cbc_test();
-int aes_ctr_test();
-int aes_ccm_test();
-
-#endif // AES_H
+/*********************************************************************\r
+* Filename: aes.h\r
+* Author: Brad Conte (brad AT bradconte.com)\r
+* Copyright:\r
+* Disclaimer: This code is presented "as is" without any guarantees.\r
+* Details: Defines the API for the corresponding AES implementation.\r
+*********************************************************************/\r
+\r
+#ifndef AES_H\r
+#define AES_H\r
+\r
+/*************************** HEADER FILES ***************************/\r
+#include <stddef.h>\r
+\r
+/****************************** MACROS ******************************/\r
+#define AES_BLOCK_SIZE 16 // AES operates on 16 bytes at a time\r
+\r
+/**************************** DATA TYPES ****************************/\r
+typedef unsigned char BYTE; // 8-bit byte\r
+typedef unsigned int WORD; // 32-bit word, change to "long" for 16-bit machines\r
+\r
+/*********************** FUNCTION DECLARATIONS **********************/\r
+///////////////////\r
+// AES\r
+///////////////////\r
+// Key setup must be done before any AES en/de-cryption functions can be used.\r
+void _olm_aes_key_setup(const BYTE key[], // The key, must be 128, 192, or 256 bits\r
+ WORD w[], // Output key schedule to be used later\r
+ int keysize); // Bit length of the key, 128, 192, or 256\r
+\r
+void _olm_aes_encrypt(const BYTE in[], // 16 bytes of plaintext\r
+ BYTE out[], // 16 bytes of ciphertext\r
+ const WORD key[], // From the key setup\r
+ int keysize); // Bit length of the key, 128, 192, or 256\r
+\r
+void _olm_aes_decrypt(const BYTE in[], // 16 bytes of ciphertext\r
+ BYTE out[], // 16 bytes of plaintext\r
+ const WORD key[], // From the key setup\r
+ int keysize); // Bit length of the key, 128, 192, or 256\r
+\r
+///////////////////\r
+// AES - CBC\r
+///////////////////\r
+int _olm_aes_encrypt_cbc(const BYTE in[], // Plaintext\r
+ size_t in_len, // Must be a multiple of AES_BLOCK_SIZE\r
+ BYTE out[], // Ciphertext, same length as plaintext\r
+ const WORD key[], // From the key setup\r
+ int keysize, // Bit length of the key, 128, 192, or 256\r
+ const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long\r
+\r
+// Only output the CBC-MAC of the input.\r
+int _olm_aes_encrypt_cbc_mac(const BYTE in[], // plaintext\r
+ size_t in_len, // Must be a multiple of AES_BLOCK_SIZE\r
+ BYTE out[], // Output MAC\r
+ const WORD key[], // From the key setup\r
+ int keysize, // Bit length of the key, 128, 192, or 256\r
+ const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long\r
+\r
+///////////////////\r
+// AES - CTR\r
+///////////////////\r
+void increment_iv(BYTE iv[], // Must be a multiple of AES_BLOCK_SIZE\r
+ int counter_size); // Bytes of the IV used for counting (low end)\r
+\r
+void _olm_aes_encrypt_ctr(const BYTE in[], // Plaintext\r
+ size_t in_len, // Any byte length\r
+ BYTE out[], // Ciphertext, same length as plaintext\r
+ const WORD key[], // From the key setup\r
+ int keysize, // Bit length of the key, 128, 192, or 256\r
+ const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long\r
+\r
+void _olm_aes_decrypt_ctr(const BYTE in[], // Ciphertext\r
+ size_t in_len, // Any byte length\r
+ BYTE out[], // Plaintext, same length as ciphertext\r
+ const WORD key[], // From the key setup\r
+ int keysize, // Bit length of the key, 128, 192, or 256\r
+ const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long\r
+\r
+///////////////////\r
+// AES - CCM\r
+///////////////////\r
+// Returns True if the input parameters do not violate any constraint.\r
+int _olm_aes_encrypt_ccm(const BYTE plaintext[], // IN - Plaintext.\r
+ WORD plaintext_len, // IN - Plaintext length.\r
+ const BYTE associated_data[], // IN - Associated Data included in authentication, but not encryption.\r
+ unsigned short associated_data_len, // IN - Associated Data length in bytes.\r
+ const BYTE nonce[], // IN - The Nonce to be used for encryption.\r
+ unsigned short nonce_len, // IN - Nonce length in bytes.\r
+ BYTE ciphertext[], // OUT - Ciphertext, a concatination of the plaintext and the MAC.\r
+ WORD *ciphertext_len, // OUT - The length of the ciphertext, always plaintext_len + mac_len.\r
+ WORD mac_len, // IN - The desired length of the MAC, must be 4, 6, 8, 10, 12, 14, or 16.\r
+ const BYTE key[], // IN - The AES key for encryption.\r
+ int keysize); // IN - The length of the key in bits. Valid values are 128, 192, 256.\r
+\r
+// Returns True if the input parameters do not violate any constraint.\r
+// Use mac_auth to ensure decryption/validation was preformed correctly.\r
+// If authentication does not succeed, the plaintext is zeroed out. To overwride\r
+// this, call with mac_auth = NULL. The proper proceedure is to decrypt with\r
+// authentication enabled (mac_auth != NULL) and make a second call to that\r
+// ignores authentication explicitly if the first call failes.\r
+int _olm_aes_decrypt_ccm(const BYTE ciphertext[], // IN - Ciphertext, the concatination of encrypted plaintext and MAC.\r
+ WORD ciphertext_len, // IN - Ciphertext length in bytes.\r
+ const BYTE assoc[], // IN - The Associated Data, required for authentication.\r
+ unsigned short assoc_len, // IN - Associated Data length in bytes.\r
+ const BYTE nonce[], // IN - The Nonce to use for decryption, same one as for encryption.\r
+ unsigned short nonce_len, // IN - Nonce length in bytes.\r
+ BYTE plaintext[], // OUT - The plaintext that was decrypted. Will need to be large enough to hold ciphertext_len - mac_len.\r
+ WORD *plaintext_len, // OUT - Length in bytes of the output plaintext, always ciphertext_len - mac_len .\r
+ WORD mac_len, // IN - The length of the MAC that was calculated.\r
+ int *mac_auth, // OUT - TRUE if authentication succeeded, FALSE if it did not. NULL pointer will ignore the authentication.\r
+ const BYTE key[], // IN - The AES key for decryption.\r
+ int keysize); // IN - The length of the key in BITS. Valid values are 128, 192, 256.\r
+\r
+///////////////////\r
+// Test functions\r
+///////////////////\r
+int aes_test();\r
+int aes_ecb_test();\r
+int aes_cbc_test();\r
+int aes_ctr_test();\r
+int aes_ccm_test();\r
+\r
+#endif // AES_H\r
projects / matrix_esp_thesis / blobdiff