Objective-C 与JAVA的SHA1/HmacSHA1加密算法实现

最近研究IOS手机上登录的功能。由于加密方式使用SHA1算法。网上也没找到直接的例子，最终参照StackoverFlow上的大神，完成了加密实现。

先上代码：

[objc] view plain copy

//HmacSHA1加密；
+(NSString *)HmacSha1:(NSString *)key data:(NSString *)data
{
const charchar *cKey = [key cStringUsingEncoding:NSASCIIStringEncoding];
const charchar *cData = [data cStringUsingEncoding:NSASCIIStringEncoding];
//Sha256:
// unsigned char cHMAC[CC_SHA256_DIGEST_LENGTH];
//CCHmac(kCCHmacAlgSHA256, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
//sha1
unsigned char cHMAC[CC_SHA1_DIGEST_LENGTH];
CCHmac(kCCHmacAlgSHA1, cKey, strlen(cKey), cData, strlen(cData), cHMAC);
NSData *HMAC = [[NSData alloc] initWithBytes:cHMAC
length:sizeof(cHMAC)];
NSString *hash = [HMAC base64EncodedStringWithOptions:0];//将加密结果进行一次BASE64编码。
return hash;
}
//密码加密方式：SHA1
+(NSString *)EncriptPassword_SHA1:(NSString *)password{
const charchar *cstr = [password cStringUsingEncoding:NSUTF8StringEncoding];
NSData *data = [NSData dataWithBytes:cstr length:password.length];
uint8_t digest[CC_SHA1_DIGEST_LENGTH];
CC_SHA1(data.bytes, data.length, digest);
NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH *2];
for(int i =0; i < CC_SHA1_DIGEST_LENGTH; i++) {
[result appendFormat:@"%02x", digest[i]];
}
return [result uppercaseString];
}

由于Android版本也用到，附上JAVA版本代码：

1.HmacSHA1:

[java] view plain copy

SecretKeySpec localSecretKeySpec = new SecretKeySpec(mySecretKey.getBytes("UTF-8"), "HmacSHA1");//加密密钥
Mac localMac = Mac.getInstance("HmacSHA1");
localMac.init(localSecretKeySpec);
localMac.update(myDate.getBytes("UTF-8"));//加密内容，这里使用时间
String result = Base64.encodeToString(localMac.doFinal(), 0).trim(); //获取加密结果并转BASE64

2:直接SHA1

[java] view plain copy

public static String authPassword(String paramString)
{
try
{
MessageDigest localMessageDigest = MessageDigest.getInstance("SHA1");
localMessageDigest.update(paramString.getBytes());
String str = bytes2Hex(localMessageDigest.digest()).toUpperCase();
return str;
}
catch (NoSuchAlgorithmException localNoSuchAlgorithmException)
{
}
return ""; }

 1 public static String bytes2Hex(byte[] src) {
 2 
 3   StringBuilder stringBuilder = new StringBuilder("");
 4   if (src == null || src.length <= 0) {
 5    return null;
 6   }
 7   for (int i = 0; i < src.length; i++) {
 8    int v = src[i] & 0xFF;
 9    String hv = Integer.toHexString(v);
10    if (hv.length() < 2) {
11     stringBuilder.append(0);
12    }
13    stringBuilder.append(hv);
14   }
15   return stringBuilder.toString();
16  }