iOS SHA1加密实现方法

使用方法 先导入头文件 #import "SHA1.h"

//SHA1测试
NSString* sh1=[SHA1 getSha1String:@""];
NSLog(@"sh1=%@  长度：%d",sh1,[sh1 length]);
NSString * sh2=[SHA1 getSha256String:@""];
NSLog(@"sh2=%@  长度：%d",sh2,[sh2 length]);

自建NSObject子类 命名SHA1

SHA1.h

#import <Foundation/Foundation.h>

@interface SHA1 : NSObject

+ (NSString *)getSha1String:(NSString *)srcString;

+ (NSString *)getSha256String:(NSString *)srcString;

+ (NSString *)getSha384String:(NSString *)srcString;

+ (NSString *)getSha512String:(NSString*)srcString;

@end

SHA1.m

#import "SHA1.h"
#import <Foundation/Foundation.h>
#import <CommonCrypto/CommonDigest.h>

@implementation SHA1

//sha1加密方式
+ (NSString *)getSha1String:(NSString *)srcString{
    const char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:srcString.length];
    uint8_t digest[CC_SHA1_DIGEST_LENGTH];
    CC_SHA1(data.bytes, data.length, digest);
    NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA1_DIGEST_LENGTH * ];
    for(int i = ; i < CC_SHA1_DIGEST_LENGTH; i++) {
        [result appendFormat:@"%02x", digest[i]];
    }
    return result;
}

//sha256加密方式
+ (NSString *)getSha256String:(NSString *)srcString {
    const char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:srcString.length];
    uint8_t digest[CC_SHA256_DIGEST_LENGTH];
    CC_SHA1(data.bytes, data.length, digest);
    NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA256_DIGEST_LENGTH * ];
    for(int i = ; i < CC_SHA256_DIGEST_LENGTH; i++) {
        [result appendFormat:@"%02x", digest[i]];
    }
    return result;
}

//sha384加密方式
+ (NSString *)getSha384String:(NSString *)srcString {
    const char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:srcString.length];
    uint8_t digest[CC_SHA384_DIGEST_LENGTH];
    CC_SHA1(data.bytes, data.length, digest);
    NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA384_DIGEST_LENGTH * ];
    for(int i = ; i < CC_SHA384_DIGEST_LENGTH; i++) {
        [result appendFormat:@"%02x", digest[i]];
    }
    return result;
}

//sha512加密方式
+ (NSString *)getSha512String:(NSString*)srcString {
    const char *cstr = [srcString cStringUsingEncoding:NSUTF8StringEncoding];
    NSData *data = [NSData dataWithBytes:cstr length:srcString.length];
    uint8_t digest[CC_SHA512_DIGEST_LENGTH];
    CC_SHA512(data.bytes, data.length, digest);
    NSMutableString* result = [NSMutableString stringWithCapacity:CC_SHA512_DIGEST_LENGTH * ];
    for(int i = ; i < CC_SHA512_DIGEST_LENGTH; i++)
        [result appendFormat:@"%02x", digest[i]];
    return result;
}

@end