标签: md5

>>> d = md5.new()
>>> d.update('a').hexdigest()
Traceback (most recent call last):
  File "<interactive input>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'hexdigest'

这会工作 -

>>> d = md5.new()
>>> d.update('a')
>>> d.hexdigest()
'0cc175b9c0f1b6a831c399e269772661'

是否有缩短python代码的解释？

嘿家伙我正在尝试建立一个使用MD5加密密码的登录系统.我有加密工作,所有这只是出于某种原因,当我在登录页面输入密码"palmer"并点击登录按钮我发送给我一个页面,它告诉我加密密码和使用"palmer"作为它输出的密码"Duncan使用密码登录4844fd4088ef5278ad18f892808ebda8 - palmer".加密时数据库中的密码是"4669a6b46c8d891b373cfcd664dff6".为什么两个密码不同？我使用相同的盐(盐是"a123b123".

下面是我的代码,它在寄存器上加密密码:

$password = $_POST['password'];

$md5pass = md5($salt.md5($password));

以下是我的登录代码.

<?php
session_start();
include('config/config.php');

$email = $_POST['email'];
$password = $_POST['password'];
$pass2 = md5($salt.md5($password));

$check = mysql_query("SELECT `email`,`password` FROM user WHERE (`email`='$email' AND       `password`='$pass2')") or die(mysql_error());

$count = mysql_num_rows($check);

//if($count == 1) {
$_SESSION['user'] = strtoupper($user);
//header('Location: /panel/index.php');
echo("Duncan Logged in using password $pass2 - $pass");
//} else {
//$_SESSION['errormsg'] = "<div id='error'><strong>Error:</strong> Invalid Username or Password!</div>";
//header('Location: index.php');
//}
?>

我使用此代码获取md5字符串哈希

- (NSString *) md5:(NSString *) input
{
    const char *cStr = [input UTF8String];
    unsigned char digest[16];
    CC_MD5( cStr, strlen(cStr), digest ); // This is the md5 call

    NSMutableString *output = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH * 2];

    for(int i = 0; i < CC_MD5_DIGEST_LENGTH; i++)
        [output appendFormat:@"%02x", digest[i]];

    return  output;
}

当我这样做时,它完美无缺

[self md5:@"mystring"];

但是当我这样做的时候

[self md5:userId];

我有一个错误

因未捕获的异常'NSInvalidArgumentException'而终止应用程序,原因:' - [NSDecimalNumber UTF8String]:无法识别的选择器发送到实例0x61a7080'

userId是一个NSString

NSString *userId; @property(retain,nonatomic) NSString *userId;

但它会影响facebook的用户ID,就像我尝试过的"3309843"

[self md5:[userId stringValue]]];

我仍然有同样的错误

更新 我试过这个

[self md5:@"980232376"];

仍然有相同的错误,我认为问题是方法md5.我不能得到一串数字的md5？

我正在使用以下代码使用md5加密字符串

const char* str = [@"123456" UTF8String];
unsigned char result[CC_MD5_DIGEST_LENGTH];
CC_MD5(str, strlen(str), result);

NSMutableString *ret = [NSMutableString stringWithCapacity:CC_MD5_DIGEST_LENGTH*2];
for(int i = 0; i<CC_MD5_DIGEST_LENGTH; i++) {
    [ret appendFormat:@"%02x",result[i]];
}
NSLog(@"%@", ret);

现在我想要一个源代码来解密编码的字符串,Any Help？

可能重复:
我可以md5(sha1(密码))？

$pass = md5($_POST["pass"].sha1($_POST["pass"]))

我在某个地方看到这个并且感到困惑.这是否读取密码并使用sha1然后md5或反向解密？还是有一些我遗失的东西？

Everyone is shooting down MD5 these days for its issues in the context of storing passwords. But what about uses where I just want to add a layer of authentication to something that will likely be used once?

This is just a hypothetical example, but let's say I have a feature to allow a user to reset their password. I email the user a link that they can click to set a new (randomly-generated) password.

My current thinking is that …

我使用JDBC连接灯和我有字LondonWeight作为密码MySQL数据库使用MD5加密.然后,我需要检查输入的密码,即LondonWeight检查它们是否匹配.但是,我的Java代码中的散列为该单词返回不同的输出.

MySQL哈希:1274d1c52d7a5a9125bd64f1f9a26dce

Java哈希:132310771724320562704545645352563257040366

这是我的哈希码:

private String hashPass(String pass) throws NoSuchAlgorithmException {
    MessageDigest mdEnc = MessageDigest.getInstance("MD5"); 
    mdEnc.update(pass.getBytes(), 0, pass.length());
    String md5 = new BigInteger(1, mdEnc.digest()).toString(8); // Encrypted 
    return md5;
}

它肯定会散列在文本框中输入的字符串,因为我将它打印到终端,所以我可以检查.知道为什么它会提供不同的输出吗？我理解有不同的方法来散列字节或其他东西？

在我的Perl应用程序中,我需要比较文件的两个版本并检测它们是否已更改.

我正在尝试在MD5或SHA之间进行选择.这与安全无关.这是比较文件的最快方法.我倾向于MD5.

但是,当我运行基准测试时,它表示不然.

有什么建议？

这是我在应用程序中使用最大文件运行的基准测试.

Benchmark: timing 10000000 iterations of MD5, SHA...
   MD5: -0.199009 wallclock secs ( 0.07 usr +  0.01 sys =  0.08 CPU) @ 125000000.00/s (n=10000000)
        (warning: too few iterations for a reliable count)
   SHA: 0.494412 wallclock secs ( 0.06 usr +  0.00 sys =  0.06 CPU) @ 166666666.67/s (n=10000000)
        (warning: too few iterations for a reliable count)
       Rate  MD5  SHA
MD5 125000000/s   -- -25%
SHA 166666667/s  33%   --

这是一个有效的盐生成代码.如果它无效,它会怎么做然后请解释我应该做什么,请稍微减少一点技术我只有15

$password='123'//test password
$salt=openssl_random_pseudo_bytes(rand());//generate salt
$prehash_password=hash('sha512',$password);//pre hash the password 
$final_password=hash('sha512',$password.$salt)//generate the final password

结果....(太长了所以裁剪它)

=m]ˆÂýÇâ&-Ù©Þ}§˜ü=l|‹|oÓÌ×±[ý’p'lJÛ|›¦nXÝx܆9óÔ¢¤ÿ‰"µ^¾õJ JI^íó,•±†û½L›T0*Stÿ#s´Ë§ÔMgå.£J§èeRzù/‡üœ¿ª¡ ǹáuT¯ '0¯ÄŒÐ²A@ü •uuYRpýš™ü5%P—í¬ïr‚×ODÜ—´“„?”öÛž;Bí#Þcõ&¾qLEâ« |Z¯ÔÐö%R•9âǸ—•êäxZ³ÎɶÉêS\™!qóœ[)ÚúÞçøƒŠº¾*Ü/X"Œê@µð¶¨$p1£B5iÚ Ú†õʬɦE3^ür¾auD»ëêA)d„ÏHzYÁepƒê¬~ô¡œ8e‡ñˆÖM&èæ<ëâM"-¹uSÂÖøsBŒiÓÑ!³ÊÅwÛö>kHåO'dyÁ(<Ýx´Ÿì¸¤˜)èÀ©@ëQæ‚Ëã:04q-‡è—žÄ­"tÌÀ±IŒW1p–̇bïV¢¼-$»¥ˆlË*Ê^¡´ZK ×±›mßhœôNþ`‰û§4p9 þ]Ùö®u*)ú24qØI£–]†#8kÐ>a…t fö¾¶+k—a ?L¯¶ƒÎµÜz‘k†—)+¥qþÞ \®qÔª|ãO¹¥ô?I°®íɨ‘‡3 dÿë€ìV&"+Ï}*L퀟h"p  Ø"ð¶Øäç6ˆkƒ¹òÓ@FK²Ä?åüï<:CˆšÛƒ1J®b™ý)žy´ÔĶa™_Áïx^—õö6Ãqc€õš¾©÷M—¡å´7ÁÑ©Nà›¶AÚ¢öEM:"¶Ž4iáîµ&Cþ²Pû¶££.ÿ *?©ñÞ`&ÞGøó§¦_B¸‡h–¦éÞæ'裩n¥êý5‘¿kcñV‰1?xçÛ#”C0ÒÁià¿0Ÿ¥çWdŘ]íhæS'ã'–ÿðò§ü‡ì¨šãfïï Á0ó7kÀ%±N“£\Br)"úkl슢˜˜[’€:º–Í  GaùÛaçˆwsÔÚ‚õòSd›±ltWZ›è_¹ªÿã§%ÉÞxŸKÊMUYÜJ@Šý+BBL¤®Š±    „¼‚ÈûæÀŠBñã“„º/oú–·fJäƒrÀ°‡¤N2¸×kìô"aõÙ%ÚÂWŸÿ–†Œ»Còc?…£Rw4ËZ_W§{b™”î—/ľ›:ºj;U.½ÓM “É¥8T37?¿UÃh5Ľ>éÎÔášÄxÀ¥ä·$í÷äÕÖ·¿Oowç<ÖÅ!XNâjW”öb1GâÔ¯yYÇ+¶pL´[sŠÍT.×KXNK“kh-ñ@bÌÜ^Ü÷]é ¿}fkøD‡0GE îŽï˜;pÂsŠ¶ZfÀ§1gjõÂcøwãj•‡'BšÓ{»£¬²BhaA2ÿT Ë~S{‹øÏàïnñhÁn ýˆÜzŽ*`5ÉŽAsqaùðĶü¿ƒ 5g>ë¥Uå!-£SÂr–ELÿ*à&;½¤&›y™Ž6¼³ªø ȮMP÷G©‹:ø_•ÜAaA«jb;‹¨ÓŠĹ‰¤¼l*S ï?ö„óÑ    žsÌ=,&å x— a´è2éòyÄlÝŠ*žÄ¥ÆnÀ¨ã³¡ ÝòÆFƒDÁ*D   ;™±™½fÀßÃ¥‹{â«ZËÅøÁY‚Œ”².—ÆÀMuüÃÙR™;c6ì€Î®û°Éƒ„bЖ{íWáßõíì’¬¾ßaÙ°^læ¿r{ƒ,ãaì?ZÞ‚á>m9‚€’ѧÑú\VFÏ\b¶c'E¨)óå€Â˜¾bæ¿;nðî¶Äê=fè8cÊ©"¹K sF¢Æš³   ²ˆô6*®&Øç$î6ÐZÆú”Ž‹S¹)šå‡j¶ý¥¹3áBy+ìç°ÏHHg®™:ä`Oà^4Æ–(Øx$…ÖýdÎÞfvr"ÙCU¼Áë¸;½›ÂMy.fRlÓûñ9HÕ6V•.–‚“3¬ig_HSÀíñæ…ïþ­qž—7¾_;ó«(«ãøguBš"ã·pÓïvŠªÜ²•tÚÒ=Jî„d|¤MxžŠÝ’Œ>`

我使用org.apache.commons.codec.digest.DigestUtils.md5Hex() Apache-Commons-Codec来计算连接字符串的mD5,但是我得到相同字符串的不同mD5哈希码值.

我看到以下输出,我的期望是它对于给定的字符串是相同的,但看起来不是.问题是什么？

我使用以下代码生成MD5 Hashcode,我在centos平台上.

    if (StringUtils.isNotBlank(concatenatedString)) {

        concatenatedString = StringUtils.deleteWhitespace(concatenatedString);
        //System.out.println("The concatenated string is "+concatenatedString);

        md5Hash = DigestUtils.md5Hex(concatenatedString);
        //System.out.println("The mD5 hashcode is  "+md5Hash);

    }

输出:

The concatenated string is JaclynSmith Women'sComfortDressPumpTori-Blackhttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+SmithProductDescriptionWhetheryourlookisdressyorcasual,addaclassictouchwiththesewomen'sToripumpsbyJaclynSmith.Theseshoesfeatureshinypatent-lookuppersandwrapped,medium-heightheels.Comfortablecushionedinsolesprovideextrasupportwhiletexturedrubberoutsolesaddanon-slipfit,makingtheseround-toepumpsperfectforeverydayofficewearoraformalnightout.Slip-ondesignSyntheticleatherupperRoundtoeCushionedinsoleTexturedrubberoutsole3-in.wrappedheelCare:WipecleanImportedif(isI18NConvReq()){$("#desca").hide();}24.99http://c.shld.net/rpx/i/s/i/spin/image/spin_prod_1001427212?hei=315&wid=315&op_sharpen=1&resMode=sharp&op_usm=0.9nullKmarthttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+Smithnullnull
The mD5 hashcode is  f20bd1bbd0063672e89d688268df0556

The concatenated string is JaclynSmith Women'sComfortDressPumpTori-Blackhttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+SmithProductDescriptionWhetheryourlookisdressyorcasual,addaclassictouchwiththesewomen'sToripumpsbyJaclynSmith.Theseshoesfeatureshinypatent-lookuppersandwrapped,medium-heightheels.Comfortablecushionedinsolesprovideextrasupportwhiletexturedrubberoutsolesaddanon-slipfit,makingtheseround-toepumpsperfectforeverydayofficewearoraformalnightout.Slip-ondesignSyntheticleatherupperRoundtoeCushionedinsoleTexturedrubberoutsole3-in.wrappedheelCare:WipecleanImportedif(isI18NConvReq()){$("#desca").hide();}24.99http://c.shld.net/rpx/i/s/i/spin/image/spin_prod_1001427412?hei=315&wid=315&op_sharpen=1&resMode=sharp&op_usm=0.9nullKmarthttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+Smithnullnull
The mD5 hashcode is  a0f99dca82fa3b3be846a9896614df9b

The concatenated string is JaclynSmith Women'sComfortDressPumpTori-Blackhttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+SmithProductDescriptionWhetheryourlookisdressyorcasual,addaclassictouchwiththesewomen'sToripumpsbyJaclynSmith.Theseshoesfeatureshinypatent-lookuppersandwrapped,medium-heightheels.Comfortablecushionedinsolesprovideextrasupportwhiletexturedrubberoutsolesaddanon-slipfit,makingtheseround-toepumpsperfectforeverydayofficewearoraformalnightout.Slip-ondesignSyntheticleatherupperRoundtoeCushionedinsoleTexturedrubberoutsole3-in.wrappedheelCare:WipecleanImportedif(isI18NConvReq()){$("#desca").hide();}24.99http://c.shld.net/rpx/i/s/i/spin/image/spin_prod_1001427112?hei=315&wid=315&op_sharpen=1&resMode=sharp&op_usm=0.9nullKmarthttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+Smithnullnull
The mD5 hashcode is  b298e7b5af0af3004a078a5c88ab9b09

The concatenated string is JaclynSmith Women'sComfortDressPumpTori-Blackhttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+SmithProductDescriptionWhetheryourlookisdressyorcasual,addaclassictouchwiththesewomen'sToripumpsbyJaclynSmith.Theseshoesfeatureshinypatent-lookuppersandwrapped,medium-heightheels.Comfortablecushionedinsolesprovideextrasupportwhiletexturedrubberoutsolesaddanon-slipfit,makingtheseround-toepumpsperfectforeverydayofficewearoraformalnightout.Slip-ondesignSyntheticleatherupperRoundtoeCushionedinsoleTexturedrubberoutsole3-in.wrappedheelCare:WipecleanImportedif(isI18NConvReq()){$("#desca").hide();}24.99http://c.shld.net/rpx/i/s/i/spin/image/spin_prod_1001427312?hei=315&wid=315&op_sharpen=1&resMode=sharp&op_usm=0.9nullKmarthttp://www.kmart.com/jaclyn-smith-women-s-comfort-dress-pump-tori-black/p-035VA51352201P//clothing-shoes-jewelry/b-1325032682?sbf=Brand&sbv=Jaclyn+Smithnullnull
The mD5 hashcode is  ffbaf47555d495b818426cc514e24c77