*//* start out by storing key in pads */bzero(k_ipad,sizeof k_ipad);bzero(k_opad,sizeof k_opad);bcopy(key,k_ipad,key_len);bcopy(key,k_opad,key_len);/* XOR key with ipad and opad values */for(i=0;i<64;i++){k_ipad[i]^=0x36;k_opad[i]^=0x5c;}/* * perform ...
HMachMac=newHMac(mg); hMac.init(newKeyParameter(key)); hMac.update(src,0,src.length); //使用不同的hash算法hash结果长度不同 byte[]hmac_result=newbyte[hMac.getMacSize()]; hMac.doFinal(hmac_result,0); System.out.println("HMAC-MD5结果为:"+Hex.toHexString(hmac_result)); // System.out...
let symKeyGenerator = cryptoFramework.createSymKeyGenerator("HMAC"); const symKey=await symK...
Handle to a symmetric key. This example creates a// key for the RC4 algorithm.// hHmacHash: Handle to an HMAC hash.// pbHash: Pointer to the hash.// dwDataLen: Length, in bytes, of the hash.// Data1: Password string used to create a symmetric key.// Data2: Message string to...
functionhmac(key,message){ if(length(key)>blocksize){ key=hash(key)// keys longer than blocksize are shortened } if(length(key)<blocksize){ // keys shorter than blocksize are zero-padded (where ∥ is concatenation) key=key∥[0x00*(blocksize-length(key))]// Where * is repetition. ...
memcpy(tmpdata,kx,B); memcpy(&tmpdata[B],out,SHA256_DIGEST_SIZE); sha256(tmpdata, SHA256_DIGEST_SIZE+B, out);//把kx和上一步生成的32B数据拼接起来再算一次sha256,输出结果。 } 测试数据: key1(32B hex):0102030405060708090a0b0c0d0e0f100102030405060708090a0b0c0d0e0f10 data1(40B ascll):123...
上面的这个思路实际上就是Hmac算法了,它通过一个标准算法,在计算哈希的过程中把key混入计算过程。和我们自定义的加salt算法不同,Hmac算法针对所有的哈希算法都通用,无论是MD5还是SHA-1。其实可以认为Hmac算法和我们自定义的加salt的哈希算法本质上就是一个东西。但是使用Hmac替代我们自己的salt算法可以使程序算法更...
bzero( k_ipad, sizeof k_ipad); bzero( k_opad, sizeof k_opad); bcopy( key, k_ipad, key_len); bcopy( key, k_opad, key_len); /* XOR key with ipad and opad values */ for (i=0; i<64; i++) { k_ipad[i] ^= 0x36; ...
std::unique_ptr<unsignedchar[]>output(newunsignedchar[EVP_MAX_MD_SIZE]); unsignedintoutput_length; HMAC_Init_ex(&ctx,key,strlen(key),engine,nullptr); HMAC_Update(&ctx,reinterpret_cast<constunsignedchar*>(data),strlen(data)); HMAC_Final(&ctx,output.get(),&output_length); ...
public HMACSHA1(byte[] key); Parameters key Byte[] The secret key for HMACSHA1 encryption. The key can be any length, but if it is more than 64 bytes long it is hashed (using SHA-1) to derive a 64-byte key. Therefore, the recommended size of the secret key is 64 bytes. Exce...