Responsible for encryption, decryption, and hashing. More...

#include <sttnet_English.h>

Static Public Member Functions
static bool	encryptSymmetric (const unsigned char before, const size_t &length, const unsigned char passwd, const unsigned char iv, unsigned char after)
	Symmetric encryption function in AES-256-CBC mode. More...

static bool	decryptSymmetric (const unsigned char before, const size_t &length, const unsigned char passwd, const unsigned char iv, unsigned char after)
	Symmetric decryption function in AES-256-CBC mode. More...

static std::string &	sha1 (const std::string &ori_str, std::string &result)
	Calculate the SHA-1 hash value (raw binary form) of the input string. More...

static std::string &	sha11 (const std::string &ori_str, std::string &result)
	Calculate the SHA-1 hash value of the input string and return it as a hexadecimal string. More...

Detailed Description

Responsible for encryption, decryption, and hashing.

Member Function Documentation

static bool stt::data::CryptoUtil::decryptSymmetric	(	const unsigned char *	before,
		const size_t &	length,
		const unsigned char *	passwd,
		const unsigned char *	iv,
		unsigned char *	after
	)

static

Symmetric decryption function in AES-256-CBC mode.

Parameters

before	Data container for ciphertext
length	Length of the ciphertext
passwd	Decryption key
iv	IV vector
after	Data container for decrypted data

Returns: true: Decryption successful, false: Decryption failed

Note: In AES-256-CBC mode, the key is 32 bytes and the iv vector is 16 bytes

static bool stt::data::CryptoUtil::encryptSymmetric	(	const unsigned char *	before,
		const size_t &	length,
		const unsigned char *	passwd,
		const unsigned char *	iv,
		unsigned char *	after
	)

static

Symmetric encryption function in AES-256-CBC mode.

Parameters

before	Data container before encryption
length	Length of the data
passwd	Encryption key
iv	IV vector
after	Data container for ciphertext

Returns: true: Encryption successful, false: Encryption failed

Note: In AES-256-CBC mode, the key is 32 bytes and the iv vector is 16 bytes

static std::string& stt::data::CryptoUtil::sha1	(	const std::string &	ori_str,
		std::string &	result
	)

static

Calculate the SHA-1 hash value (raw binary form) of the input string.

Uses OpenSSL's SHA1 function to hash the input string, and the result is stored in result in 20-byte raw binary form. Note: result may contain non-printable characters and is not suitable for direct output or writing to text.

Parameters

ori_str	Input original string.
result	Used to store the output SHA-1 hash value (binary form), 20 bytes in length.

Returns: Reference to result.

Note: This function is suitable for subsequent encryption, signature, etc. (e.g., for HMAC input).

static std::string& stt::data::CryptoUtil::sha11	(	const std::string &	ori_str,
		std::string &	result
	)

static

Calculate the SHA-1 hash value of the input string and return it as a hexadecimal string.

Uses OpenSSL's SHA1 function to hash the input string, and the result is stored in result in a 40-character hexadecimal format. Each byte is converted to two hexadecimal characters, which can be directly used for readable scenarios such as printing, logging, and storage.

Parameters

ori_str	Input original string.
result	Used to store the output SHA-1 hash value (40-byte hexadecimal string).

Returns: Reference to result.

Note: Suitable for hash display, unique identification, log verification, etc. The main difference from sha1 is the output format.

The documentation for this class was generated from the following file:

include/sttnet_English.h

Static Public Member Functions

Detailed Description

Member Function Documentation