iOS SHA1 和 Base64 url_safe加密解析

ios sha1 和 base64 url_safe 。

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

#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

{

const char *cstr = [input cstringusingencoding:nsutf8stringencoding];

nsdata *data = [nsdata datawithbytes:cstr length:input.length];

 

uint8_t digest[cc_sha1_digest_length];

 

cc_sha1(data.bytes, (unsigned int)data.length, digest);

 

nsmutablestring* output = [nsmutablestring stringwithcapacity:cc_sha1_digest_length * 2];

 

for(int i = 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];

 

return base64string;

}

//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, (unsigned int)data.length, digest);

 

nsmutablestring *output = [nsmutablestring stringwithcapacity:cc_sha1_digest_length * 2];

 

for(int i=0; i

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

}

 

return output;

}

//普通字符串加密，返回值字nsdata

+ (nsdata *)getdatasha1:(nsstring *)input

{

const char *cstr = [input cstringusingencoding:nsutf8stringencoding];

nsdata *data = [nsdata datawithbytes:cstr length:input.length];

 

uint8_t digest[cc_sha1_digest_length];

 

cc_sha1(data.bytes, (unsigned int)data.length, digest);

 

nsdata * base64 = [[nsdata alloc]initwithbytes:digest length:cc_sha1_digest_length];

 

return base64;

}

//先sha1后进行base64(url_safe)

+ (nsstring *)getsha1withbase64:(nsstring *)input

{

const char *cstr = [input cstringusingencoding:nsutf8stringencoding];

nsdata *data = [nsdata datawithbytes:cstr length:input.length];

 

uint8_t digest[cc_sha1_digest_length];

 

cc_sha1(data.bytes, (unsigned int)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);

return safebase64str;

}

@end