hmacSha1 + Base64

hmacSha1 + Base64

+ (NSString *)hmacSha1:(NSString*)key text:(NSString*)text {

    const char *cKey  = [key cStringUsingEncoding:NSUTF8StringEncoding];

    const char *cData = [text cStringUsingEncoding:NSUTF8StringEncoding];

    uint8_t cHMAC[CC_SHA1_DIGEST_LENGTH];

    CCHmac(kCCHmacAlgSHA1, cKey, strlen(cKey), cData, strlen(cData), cHMAC);

    //NSData *HMAC = [[NSData alloc] initWithBytes:cHMAC length:CC_SHA1_DIGEST_LENGTH];

    NSString *hash;

    NSMutableString * output = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * 2];

    for(int i = 0; i < CC_SHA1_DIGEST_LENGTH; i++)

        [output appendFormat:@"%02x", cHMAC[i]];

    hash = output;

    return hash;

}