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我想要实现PBKDF2和我不断收到错误的结果，不知道是什么问题...我不断收到错误的值，我PBKDF2执行
我使用的是公共的密码实施检查我的结果
这里是我的测试功能
#include <stdio.h>
#include "PBKDF2.h"
#include <CommonCrypto/CommonKeyDerivation.h>
int main (int argc, const char * argv[])
{
const char *P = "password";
const char *S = "salt";
uint8_t *dk = PBKFD2(P, (uint8_t *)S, strlen(S), 1, 32);
printf("mine: ");
for(int i = 0; i < 32; i++) {
printf("%02X ", dk[i]);
}
printf("\n");
uint8_t *dk2 = malloc(32);
CCKeyDerivationPBKDF(kCCPBKDF2, P, strlen(P), (uint8_t *)S, strlen(S), kCCHmacAlgSHA256, 1, dk2, 32);
printf("aapl: ");
for(int i = 0; i < 32; i++) {
printf("%02X ", dk2[i]);
}
printf("\n");
free(dk);
free(dk2);
return 0;
}
，这里是我的实际代码
#include "PBKDF2.h"
#include <CommonCrypto/CommonHMAC.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
uint8_t *F(const char *, const uint8_t*, size_t, uint32_t, uint32_t);
uint8_t *F(const char *P, const uint8_t *S, size_t saltLen, uint32_t c, uint32_t i) {
uint8_t *T = malloc(CC_SHA256_DIGEST_LENGTH);
memset(T, 0, CC_SHA256_DIGEST_LENGTH);
for(int k = 0; k < c; k++) {
uint8_t salt[8];
uint8_t U[CC_SHA256_DIGEST_LENGTH] = {0};
if(k == 0) {
memcpy(salt, S, saltLen);
salt[saltLen] = i & 0xFF;
salt[saltLen + 1] = (i>>8)&0xFF;
salt[saltLen + 2] = (i>>16)&0xFF;
salt[saltLen + 3] = (i>>24)&0xFF;
CCHmac(kCCHmacAlgSHA256, salt, saltLen+4, P, strlen(P), U);
} else {
CCHmac(kCCHmacAlgSHA256, S, saltLen, P, strlen(P), U);
}
for(int j = 0; j < CC_SHA256_DIGEST_LENGTH; j++) {
T[j] ^= U[j];
}
}
return T;
}
uint8_t* PBKFD2(const char *P, const uint8_t *S, size_t saltLen, uint32_t c, uint32_t dkLen) {
uint32_t hLen = 32;
uint32_t l = (uint32_t)(ceil(((double)dkLen)/((double)hLen)));
uint32_t r = dkLen - (l - 1) * hLen;
uint8_t **T = malloc(sizeof(uint8_t *) * l);
for(int i = 1; i <= l; i++) {
T[i-1] = F(P, S, saltLen, c, i);
}
uint8_t *dk = malloc(sizeof(uint8_t) * dkLen);
for(int i = 0; i < l; i++){
if(i < l-1)
{
memcpy(dk+(hLen*i), T[i], hLen);
} else {
memcpy(dk+(hLen*i), T[i], r);
}
free(T[i]);
}
free(T);
return dk;
}