259 lines
12 KiB
C
259 lines
12 KiB
C
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#pragma once
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#include "hpsocket/GlobalDef.h"
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#include <stddef.h>
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// -------------------------------------------------- BASE64 -------------------------------------------------- //
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// Returns the size of the output. If called with out = NULL, will just return
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// the size of what the output would have been (without a terminating NULL).
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size_t base64_encode(const BYTE in[], BYTE out[], size_t len, int newline_flag);
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// Returns the size of the output. If called with out = NULL, will just return
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// the size of what the output would have been (without a terminating NULL).
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size_t base64_decode(const BYTE in[], BYTE out[], size_t len);
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// -------------------------------------------------- URL -------------------------------------------------- //
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int url_encode(const char* src, const int src_size, char* dest, const int dest_size);
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int url_decode(const char* src, const int src_size, char* dest, const int dest_size);
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// -------------------------------------------------- AES -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define AES_BLOCK_SIZE 16 // AES operates on 16 bytes at a time
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/**************************** DATA TYPES ****************************/
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//typedef unsigned char BYTE; // 8-bit byte
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//typedef unsigned int UINT; // 32-bit word, change to "long" for 16-bit machines
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/*********************** FUNCTION DECLARATIONS **********************/
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///////////////////
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// AES
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///////////////////
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// Key setup must be done before any AES en/de-cryption functions can be used.
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void aes_key_setup(const BYTE key[], // The key, must be 128, 192, or 256 bits
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UINT w[], // Output key schedule to be used later
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int keysize); // Bit length of the key, 128, 192, or 256
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void aes_encrypt(const BYTE in[], // 16 bytes of plaintext
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BYTE out[], // 16 bytes of ciphertext
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const UINT key[], // From the key setup
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int keysize); // Bit length of the key, 128, 192, or 256
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void aes_decrypt(const BYTE in[], // 16 bytes of ciphertext
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BYTE out[], // 16 bytes of plaintext
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const UINT key[], // From the key setup
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int keysize); // Bit length of the key, 128, 192, or 256
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///////////////////
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// AES - CBC
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///////////////////
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int aes_encrypt_cbc(const BYTE in[], // Plaintext
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size_t in_len, // Must be a multiple of AES_BLOCK_SIZE
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BYTE out[], // Ciphertext, same length as plaintext
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const UINT key[], // From the key setup
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int keysize, // Bit length of the key, 128, 192, or 256
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const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
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// Only output the CBC-MAC of the input.
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int aes_encrypt_cbc_mac(const BYTE in[], // plaintext
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size_t in_len, // Must be a multiple of AES_BLOCK_SIZE
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BYTE out[], // Output MAC
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const UINT key[], // From the key setup
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int keysize, // Bit length of the key, 128, 192, or 256
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const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
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///////////////////
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// AES - CTR
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///////////////////
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void increment_iv(BYTE iv[], // Must be a multiple of AES_BLOCK_SIZE
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int counter_size); // Bytes of the IV used for counting (low end)
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void aes_encrypt_ctr(const BYTE in[], // Plaintext
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size_t in_len, // Any byte length
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BYTE out[], // Ciphertext, same length as plaintext
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const UINT key[], // From the key setup
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int keysize, // Bit length of the key, 128, 192, or 256
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const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
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void aes_decrypt_ctr(const BYTE in[], // Ciphertext
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size_t in_len, // Any byte length
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BYTE out[], // Plaintext, same length as ciphertext
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const UINT key[], // From the key setup
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int keysize, // Bit length of the key, 128, 192, or 256
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const BYTE iv[]); // IV, must be AES_BLOCK_SIZE bytes long
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///////////////////
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// AES - CCM
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///////////////////
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// Returns True if the input parameters do not violate any constraint.
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int aes_encrypt_ccm(const BYTE plaintext[], // IN - Plaintext.
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UINT plaintext_len, // IN - Plaintext length.
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const BYTE associated_data[], // IN - Associated Data included in authentication, but not encryption.
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unsigned short associated_data_len, // IN - Associated Data length in bytes.
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const BYTE nonce[], // IN - The Nonce to be used for encryption.
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unsigned short nonce_len, // IN - Nonce length in bytes.
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BYTE ciphertext[], // OUT - Ciphertext, a concatination of the plaintext and the MAC.
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UINT *ciphertext_len, // OUT - The length of the ciphertext, always plaintext_len + mac_len.
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UINT mac_len, // IN - The desired length of the MAC, must be 4, 6, 8, 10, 12, 14, or 16.
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const BYTE key[], // IN - The AES key for encryption.
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int keysize); // IN - The length of the key in bits. Valid values are 128, 192, 256.
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// Returns True if the input parameters do not violate any constraint.
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// Use mac_auth to ensure decryption/validation was preformed correctly.
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// If authentication does not succeed, the plaintext is zeroed out. To overwride
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// this, call with mac_auth = NULL. The proper proceedure is to decrypt with
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// authentication enabled (mac_auth != NULL) and make a second call to that
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// ignores authentication explicitly if the first call failes.
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int aes_decrypt_ccm(const BYTE ciphertext[], // IN - Ciphertext, the concatination of encrypted plaintext and MAC.
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UINT ciphertext_len, // IN - Ciphertext length in bytes.
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const BYTE assoc[], // IN - The Associated Data, required for authentication.
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unsigned short assoc_len, // IN - Associated Data length in bytes.
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const BYTE nonce[], // IN - The Nonce to use for decryption, same one as for encryption.
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unsigned short nonce_len, // IN - Nonce length in bytes.
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BYTE plaintext[], // OUT - The plaintext that was decrypted. Will need to be large enough to hold ciphertext_len - mac_len.
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UINT *plaintext_len, // OUT - Length in bytes of the output plaintext, always ciphertext_len - mac_len .
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UINT mac_len, // IN - The length of the MAC that was calculated.
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int *mac_auth, // OUT - TRUE if authentication succeeded, FALSE if it did not. NULL pointer will ignore the authentication.
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const BYTE key[], // IN - The AES key for decryption.
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int keysize); // IN - The length of the key in BITS. Valid values are 128, 192, 256.
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// -------------------------------------------------- DES -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define DES_BLOCK_SIZE 8 // DES operates on 8 bytes at a time
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/**************************** DATA TYPES ****************************/
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typedef enum {
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DES_ENCRYPT,
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DES_DECRYPT
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} DES_MODE;
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/*********************** FUNCTION DECLARATIONS **********************/
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void des_key_setup(const BYTE key[], BYTE schedule[][6], DES_MODE mode);
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void des_crypt(const BYTE in[], BYTE out[], const BYTE key[][6]);
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void three_des_key_setup(const BYTE key[], BYTE schedule[][16][6], DES_MODE mode);
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void three_des_crypt(const BYTE in[], BYTE out[], const BYTE key[][16][6]);
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// -------------------------------------------------- MD2 -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define MD2_BLOCK_SIZE 16
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/**************************** DATA TYPES ****************************/
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typedef struct {
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BYTE data[16];
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BYTE state[48];
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BYTE checksum[16];
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int len;
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} _MD2_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void md2_init(_MD2_CTX *ctx);
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void md2_update(_MD2_CTX *ctx, const BYTE data[], size_t len);
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void md2_final(_MD2_CTX *ctx, BYTE hash[]); // size of hash must be MD2_BLOCK_SIZE
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// -------------------------------------------------- MD5 -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define MD5_BLOCK_SIZE 16 // MD5 outputs a 16 byte digest
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/**************************** DATA TYPES ****************************/
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typedef struct {
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BYTE data[64];
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UINT datalen;
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unsigned long long bitlen;
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UINT state[4];
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} _MD5_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void md5_init(_MD5_CTX *ctx);
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void md5_update(_MD5_CTX *ctx, const BYTE data[], size_t len);
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void md5_final(_MD5_CTX *ctx, BYTE hash[]);
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// -------------------------------------------------- SHA1 -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define SHA1_BLOCK_SIZE 20 // SHA1 outputs a 20 byte digest
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/**************************** DATA TYPES ****************************/
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typedef struct {
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BYTE data[64];
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UINT datalen;
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unsigned long long bitlen;
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UINT state[5];
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UINT k[4];
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} _SHA1_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void sha1_init(_SHA1_CTX *ctx);
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void sha1_update(_SHA1_CTX *ctx, const BYTE data[], size_t len);
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void sha1_final(_SHA1_CTX *ctx, BYTE hash[]);
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// -------------------------------------------------- SHA256 -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define SHA256_BLOCK_SIZE 32 // SHA256 outputs a 32 byte digest
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/**************************** DATA TYPES ****************************/
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typedef struct {
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BYTE data[64];
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UINT datalen;
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unsigned long long bitlen;
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UINT state[8];
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} _SHA256_CTX;
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/*********************** FUNCTION DECLARATIONS **********************/
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void sha256_init(_SHA256_CTX *ctx);
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void sha256_update(_SHA256_CTX *ctx, const BYTE data[], size_t len);
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void sha256_final(_SHA256_CTX *ctx, BYTE hash[]);
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// -------------------------------------------------- ARCFOUR -------------------------------------------------- //
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/**************************** DATA TYPES ****************************/
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/*********************** FUNCTION DECLARATIONS **********************/
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// Input: state - the state used to generate the keystream
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// key - Key to use to initialize the state
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// len - length of key in bytes (valid lenth is 1 to 256)
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void arcfour_key_setup(BYTE state[], const BYTE key[], int len);
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// Pseudo-Random Generator Algorithm
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// Input: state - the state used to generate the keystream
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// out - Must be allocated to be of at least "len" length
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// len - number of bytes to generate
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void arcfour_generate_stream(BYTE state[], BYTE out[], size_t len);
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// -------------------------------------------------- BLOWFISH -------------------------------------------------- //
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/****************************** MACROS ******************************/
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#define BLOWFISH_BLOCK_SIZE 8 // Blowfish operates on 8 bytes at a time
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/**************************** DATA TYPES ****************************/
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typedef struct {
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WORD p[18];
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WORD s[4][256];
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} _BLOWFISH_KEY;
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/*********************** FUNCTION DECLARATIONS **********************/
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void blowfish_key_setup(const BYTE user_key[], _BLOWFISH_KEY *keystruct, size_t len);
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void blowfish_encrypt(const BYTE in[], BYTE out[], const _BLOWFISH_KEY *keystruct);
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void blowfish_decrypt(const BYTE in[], BYTE out[], const _BLOWFISH_KEY *keystruct);
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// -------------------------------------------------- ROT-13 -------------------------------------------------- //
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/*********************** FUNCTION DECLARATIONS **********************/
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// Performs IN PLACE rotation of the input. Assumes input is NULL terminated.
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// Preserves each charcter's case. Ignores non alphabetic characters.
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void rot13(char str[]);
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