SHA 加密算法 SHA (Secure Hash Algorithm,译作安全散列算法) 是美国国家安全局 (NSA) 设计,美国国家标准与技术研究院 (NIST) 发布的一系列密码散列函数。正式名称为 SHA 的家族第一个成员发布于 1993年。然而现在的人们给它取了一个非正式的名称 SHA-0 以避免与它的后继者混淆。两年之后, SHA-1,第一个 SHA...
In 2005, cryptanalysts found attacks on SHA-1 suggesting that the algorithm might not be secure enough for ongoing use.[3] NIST required many applications in federal agencies to move to SHA-2after 2010 because of the weakness.[4] Although no successful attacks have yet been reported on SHA...
hash_stage2); /* create crypt string as sha1(message, hash_stage2) */; compute_sha1_hash_multi((uint8 *)to, message, SCRAMBLE_LENGTH, (const char *)hash_stage2, SHA1_HASH_SIZE); my_crypt(to, (const uchar *)to, hash_stage1, SCRAMBLE_LENGTH); /*while (s1 < s1_end) *to++...
加密的数据长度 9、缓冲区(地址),存放密文的 10、缓冲区的大小 11、加密结果大小 */ CCCryptorStatus cryptStatus = CCCrypt(kCCDecrypt, self.algorithm, option, cKey, self.keySize, cIv, [data bytes], [data length], buffer, bufferSize, &decryptedSize); NSData *result = nil; if (cryptStatus ...
大家也可以结合sha256algorithm.com“可视化地”查看其具体步骤 2.2 SHA-256 的目的是什么? 通过对内容计算摘要,可以检测内容是否被篡改(篡改后摘要的值会发生变化)。 2.3 SHA-256 获取 2.3.1 文本类型 直接在网上找一些加密网站都支持这个功能。 https://md5.cn/#/tools/hash?id=Hash ...
Albeit SHA-1 is still widely used, cryptanalysts in 2005 were able to find vulnerabilities on this algorithm that detrimentally compromised its security. These vulnerabilities came in the form of an algorithm that speedily finds collisions with different inputs, meaning that two distinct inputs map...
SHA (Secure Hash Algorithm，译作安全散列算法) 是美国国家安全局 (NSA) 设计，美国国家标准与技术研究...
clearTextData.withUnsafeBytes {clearTextBytes in key.withUnsafeBytes {keyBytes in CCCrypt(CCOperation(kCCEncrypt), CCAlgorithm(kCCAlgorithmAES), CCOptions(kCCOptionPKCS7Padding), keyBytes, key.count, ivBytes, clearTextBytes, clearTextData.count, ...
#include "cryptlib.h" #include "sha.h" #include <iostream> int main (int argc, char* argv[]) { using namespace CryptoPP; SHA1 hash; std::cout << "Name: " << hash.AlgorithmName() << std::endl; std::cout << "Digest size: " << hash.DigestSize() << std::endl; std::cou...
usingnamespaceCryptoPP; 8 9 intmain(void) 10 { 11 //主要是打印一些基本信息,方便调试: 12 cout<<"DES Parameters:"<<endl; 13 cout<<"Algorithm name :"<<DES::StaticAlgorithmName()<<endl; 14 15 unsignedcharkey[ DES::DEFAULT_KEYLENGTH ]; ...