iOS SHA1 和 Base64 url_safe 加密

iOS SHA1 和 Base64 url_safe 加密

网上查找的资料SHA1加密后大部分获取的是字符串，如果还要进行下一步操作时，一定要慎用字符串，我最近在做SHA1 和 Base64 url_safe 加密，用SHA1加密后的获取字符串进行Base64编码，但是得到的数值对比安卓和后台接口得到的数值都不一样，安卓和后台SHA1可以直接获取二进制流，然后进行Base64编码，iOS  SHA1没法直接获取data数据，如果转换成字符串在进行Base64编码，得到的数据就不统一，这是一个很大的坑，一定要看好    Demo地址

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#import "XWSSHA1Tool.h"

#import

#import "GTMBase64.h"

@implementation XWSSHA1Tool

//普通字符串加密，返回值字符串

+ (NSString *)xwsSHA1:(NSString *)input

{

    constchar*cstr = [input cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData dataWithBytes:cstr length:input.length];

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    CC_SHA1(data.bytes, (unsignedint)data.length, digest);

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

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

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

    NSString *shaStr = [NSString stringWithFormat:@"%@",output];

    NSData *dataBase = [shaStr dataUsingEncoding:NSUTF8StringEncoding];

    NSString *base64String = [dataBase base64EncodedStringWithOptions:0];

    returnbase64String;

}

//带有汉子类型加密，返回值字符串

+ (NSString *)xwsHanziSHA1:(NSString *)input

{

    NSData *data = [input dataUsingEncoding:NSUTF8StringEncoding];

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    CC_SHA1(data.bytes, (unsignedint)data.length, digest);

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

    for(inti=0; i

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

    }

    returnoutput;

}

//普通字符串加密，返回值字NSData

+ (NSData *)getDataSHA1:(NSString *)input

{

    constchar*cstr = [input cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData dataWithBytes:cstr length:input.length];

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    CC_SHA1(data.bytes, (unsignedint)data.length, digest);

    NSData * base64 = [[NSData alloc]initWithBytes:digest length:CC_SHA1_DIGEST_LENGTH];

    returnbase64;

}

//先SHA1后进行Base64（url_safe）

+ (NSString *)getSHA1WithBase64:(NSString *)input

{

    constchar*cstr = [input cStringUsingEncoding:NSUTF8StringEncoding];

    NSData *data = [NSData dataWithBytes:cstr length:input.length];

    uint8_t digest[CC_SHA1_DIGEST_LENGTH];

    CC_SHA1(data.bytes, (unsignedint)data.length, digest);

    //SHA1直接转data

    NSData * base64 = [[NSData alloc]initWithBytes:digest length:CC_SHA1_DIGEST_LENGTH];

    //SHA1进行Base64编码

    //Base64编码中包含有"+,/,="不安全的URL字符串，我们要对这些字符进行转换

    NSString * base64Str = [GTMBase64 encodeBase64Data:base64];

    NSMutableString * safeBase64Str = [[NSMutableString alloc]initWithString:base64Str];

    safeBase64Str = (NSMutableString * )[safeBase64Str stringByReplacingOccurrencesOfString:@"+"withString:@"-"];

    safeBase64Str = (NSMutableString * )[safeBase64Str stringByReplacingOccurrencesOfString:@"/"withString:@"_"];

    safeBase64Str = (NSMutableString * )[safeBase64Str stringByReplacingOccurrencesOfString:@"="withString:@""];

    NSLog(@"safeBase64编码：%@", safeBase64Str);

    returnsafeBase64Str;

}