iOS MD5 base 64 加密

MD5 对NSString 加密

#import <CommonCrypto/CommonCrypto.h>
// md5对字符串进行加密
+ (NSString *) md5WithString:(NSString *)sourceString{
// 转化类型 NSString -> C 字符数组
const char *str = sourceString.UTF8String;
// C字符数组
unsigned char result [CC_MD5_DIGEST_LENGTH];
// 进行加密
CC_MD5(str, (CC_LONG)strlen(str), result);
// 转化类型 C -> NSString
NSMutableString *resultString = [[NSMutableString alloc] initWithCapacity:CC_MD5_DIGEST_LENGTH];
for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
NSString *item = [NSString stringWithFormat:@"%02X", result[i]];
[resultString appendString:item];
}
return resultString;
}

MD5 对NSData 加密

// md5对NSData类型进行进行加密
+ (NSString *)md5WithSourceData:(NSData *)sourceData{
// 声明并初始化 md5 变量
CC_MD5_CTX md5;
CC_MD5_Init(&md5);
// 准备加密
CC_MD5_Update(&md5, sourceData.bytes, (CC_LONG)sourceData.length);
// 创建 char 数组接收加密之后的数组
unsigned char result [CC_MD5_DIGEST_LENGTH];
CC_MD5_Final(result, &md5);
// char数组 --> NSString 的接收NSString类型对象
NSMutableString *resultString = [[NSMutableString alloc] initWithCapacity:CC_MD5_DIGEST_LENGTH];
// char数组 -> NSString
for (int i = 0; i < CC_MD5_DIGEST_LENGTH; i++) {
NSString *item = [NSString stringWithFormat:@"%02X", result[i]];
[resultString appendString:item];
}
return resultString;
}

Base 64 加密

// base64加密
+ (NSString *)base64EncodingWithSourceData:(NSData *)data{
NSString *resultString = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
return resultString;
}

Base 64 解密

// base64 解密
+ (NSData *)base64DecodingWithString:(NSString *)string{
NSData *data = [[NSData alloc] initWithBase64EncodedString:string options:NSDataBase64DecodingIgnoreUnknownCharacters];
return data;
}