md5

Java MessageDigest doesn't work

由 三世轮回 提交于 2020-01-12 10:41:12
问题 I can't make MessageDigest work, the program gives me two error: UnsupportedEncodingException, NoSuchAlgorithmException byte[] bytesOfchat_key = "lol".getBytes("UTF-8"); MessageDigest md = MessageDigest.getInstance("MD5"); byte[] Digest = md.digest(bytesOfchat_key); If I throw the errors, it give me ﾜ￟ﾴ9ￇﾇnp>0xd￉z as response ( 16 chars ) PS: I have used to print the Digest for (byte b : Digest) { System.out.print((char)b); } 回答1: md5 returns hexadecimal numbers, so for decoding it to a

Java MessageDigest doesn't work

由 回眸只為那壹抹淺笑 提交于 2020-01-12 10:40:40
问题 I can't make MessageDigest work, the program gives me two error: UnsupportedEncodingException, NoSuchAlgorithmException byte[] bytesOfchat_key = "lol".getBytes("UTF-8"); MessageDigest md = MessageDigest.getInstance("MD5"); byte[] Digest = md.digest(bytesOfchat_key); If I throw the errors, it give me ﾜ￟ﾴ9ￇﾇnp>0xd￉z as response ( 16 chars ) PS: I have used to print the Digest for (byte b : Digest) { System.out.print((char)b); } 回答1: md5 returns hexadecimal numbers, so for decoding it to a

how to implement sha 512,md5 and salt encryption all for one password [duplicate]

由 扶醉桌前 提交于 2020-01-11 20:00:12
问题 This question already has answers here : Secure hash and salt for PHP passwords (14 answers) Closed 5 years ago . $pass="test" the above variable contains a password called test.I want to hash this password using sha512 md5 and salt how do i do that as ive found only benifits of salt and sha512,i allready know md5 encryption.please i need the solution as my system is vunerable and please explain it with a code example because im still attached to md5 from what ive understood by your comments

how to implement sha 512,md5 and salt encryption all for one password [duplicate]

由 不问归期 提交于 2020-01-11 20:00:10
问题 This question already has answers here : Secure hash and salt for PHP passwords (14 answers) Closed 5 years ago . $pass="test" the above variable contains a password called test.I want to hash this password using sha512 md5 and salt how do i do that as ive found only benifits of salt and sha512,i allready know md5 encryption.please i need the solution as my system is vunerable and please explain it with a code example because im still attached to md5 from what ive understood by your comments

PHP.net says that md5() and sha1() unsuitable for password?

由 回眸只為那壹抹淺笑 提交于 2020-01-11 13:04:08
问题 http://www.php.net/manual/en/faq.passwords.php#faq.passwords.fasthash I'm storing user passwords in a MySQL database in hash form. Does this mean that it is unsafe to do so? If it is, what are my alternatives? 回答1: The next question in the FAQ you linked to discusses it: How should I hash my passwords, if the common hash functions are not suitable? From the FAQ: The suggested algorithm to use when hashing passwords is Blowfish, as it is significantly more computationally expensive than MD5 or

Why do the md5 hashes of two tarballs of the same file differ?

由 拈花ヽ惹草 提交于 2020-01-10 14:14:08
问题 I can run: echo "asdf" > testfile tar czf a.tar.gz testfile tar czf b.tar.gz testfile md5sum *.tar.gz and it turns out that a.tar.gz and b.tar.gz have different md5 hashes. It's true that they're different, which diff -u a.tar.gz b.tar.gz confirms. What additional flags do I need to pass in to tar so that its output is consistent over time with the same input? 回答1: tar czf outfile infiles is equivalent to tar cf - infiles | gzip > outfile The reason the files are different is because gzip

2.请求安全-- MD5的必要性以及实际应用场景

由 时光毁灭记忆、已成空白 提交于 2020-01-10 12:04:38
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> #MD5的必要性以及实际应用场景 ##前言 MD5为计算机安全领域广泛使用的一种散列函数，用以提供消息的完整性保护。用于确保信息传输完整一致。是计算机广泛使用的杂凑算法之一（又译摘要算法、哈希算法），主流编程语言普遍已有MD5实现。将数据（如汉字）运算为另一固定长度值，是杂凑算法的基础原理，MD5的前身有MD2、MD3和MD4。 PS:写这篇文章的本意是把我在工作中使用的MD5加密技巧分享出来,和大家一起交流,可能应为水平有限会有遗漏之处望大家包含,也请大家提出建议我会进一步完善. ##1.MD5算法具有以下特点：## 1、压缩性：任意长度的数据，算出的MD5值长度都是固定的。 2、容易计算：从原数据计算出MD5值很容易。 3、抗修改性：对原数据进行任何改动，哪怕只修改1个字节，所得到的MD5值都有很大区别。 4、弱抗碰撞：已知原数据和其MD5值，想找到一个具有相同MD5值的数据（即伪造数据）是非常困难的。 5、强抗碰撞：想找到两个不同的数据，使它们具有相同的MD5值，是非常困难的。 根据以上的特定我们能总结出几个根据以上特点衍生出来可以供我们使用的特性: 1.方便存储:MD5加密出来都是32位的字符串,能够给定固定大小的空间存储,传输,验证 2.文件加密:MD5运用在文件加密上很有优势

XSLT: Obtaining or matching hashes for base64 encoded data

由 扶醉桌前 提交于 2020-01-10 09:22:24
问题 I need to find a way to find a way to find the hash for the base64 encoded data in the XML node //note/resource/data , or somehow otherwise match it to the hash value in the node //note/content/en-note//en-media@hash See below for the full XML file Please suggest a way to {obtain|match} using XSLT 4aaafc3e14314027bb1d89cf7d59a06c {from|with} R0lGODlhEAAQAPMAMcDAwP/crv/erbigfVdLOyslHQAAAAECAwECAwECAwECAwECAwECAwECAwEC AwECAyH/C01TT0ZGSUNFOS4wGAAAAAxtc09QTVNPRkZJQ0U5LjAHgfNAGQAh/wtNU09GRklDRTku

XSLT: Obtaining or matching hashes for base64 encoded data

由 吃可爱长大的小学妹 提交于 2020-01-10 09:21:38
问题 I need to find a way to find a way to find the hash for the base64 encoded data in the XML node //note/resource/data , or somehow otherwise match it to the hash value in the node //note/content/en-note//en-media@hash See below for the full XML file Please suggest a way to {obtain|match} using XSLT 4aaafc3e14314027bb1d89cf7d59a06c {from|with} R0lGODlhEAAQAPMAMcDAwP/crv/erbigfVdLOyslHQAAAAECAwECAwECAwECAwECAwECAwECAwEC AwECAyH/C01TT0ZGSUNFOS4wGAAAAAxtc09QTVNPRkZJQ0U5LjAHgfNAGQAh/wtNU09GRklDRTku

How do I create an MD5 hash digest from a text file?

由 帅比萌擦擦* 提交于 2020-01-09 07:13:55
问题 Using C#, I want to create an MD5 hash of a text file. How can I accomplish this? Update: Thanks to everyone for their help. I've finally settled upon the following code - // Create an MD5 hash digest of a file public string MD5HashFile(string fn) { byte[] hash = MD5.Create().ComputeHash(File.ReadAllBytes(fn)); return BitConverter.ToString(hash).Replace("-", ""); } 回答1: Here's the routine I'm currently using. using System.Security.Cryptography; public string HashFile(string filePath) { using
订阅 md5