Is this some kind of encrypted text. If so what is the message? What algorithm do they use to encrypt it.
/wEPDwUKLTg4NzIyNzcwNw9kFgICAw9kFggCAw8PFgIeBFRleHQFD1N1Z2FuIEtyaXNobmFuIWRkAgUPDxYCHwAFATVkZAIHDw8WAh4ISW1hZ2VVcmwFEX4vaW1hZ2VzL0ZpdmUuanBnZGQCDQ8PFgQfAAUOVHJ5IG9uY2UgbW9yZSEeB1Zpc2libGVnZGQYAQUeX19Db250cm9sc1JlcXVpcmVQb3N0QmFja0tleV9fFgEFDEltYWdlQnV0dG9uMbKoXKekKw34NtoM3F7LSsVyk27i
and this one also
/wEWAwKF0NmYAwLs0bLrBgLSwpnTCAezV8kYXyYZ4dulPyQ9ezcN3auX
Maybe; have you tried base64 decoding it, etc?
EDIT: yep, or something close to, as it's not all human readable -- if you let us know the context in which you acquired it, someone might be able to guess the format. Otherwise, we'll be making all sorts of guesses.
ÿ
-887227707ddTextSugan Krishnan!dd5ddImageUrl~/images/Five.jpgdd
Try once more!Visiblegdd_ControlsRequirePostBackKey_ImageButton1²¨\§¤+
ø6ÚÜ^ËJÅr“nâ
(Thanks to this online Base64 decoder).
Related
I'm digging into a log file of telephony data on a mac, there are a few entries that are intelligible plaintext but most of it is base64 and without knowing what it originally represented I haven't been able to figure out how to decode it into anything meaningful. They're 108-character blocks that I am completely certain are base64 (all the right characters for base64 and none that aren't, end in equals signs), but I am at a loss as to how to get anything useful out of them.
Someone previously was able to use this data productively, but how isn't documented. Does anyone have an idea what it would have been before it was base64 or how to get it back into a usable format?
Why don't you try a Python script?
There is a post that can help you:
Python base64 data decode
Check it out! There is an answer that can really help you.
If you don't know how to use python, here is an official Beginner's Guide:
https://www.python.org/about/gettingstarted/
Download it from here:
https://www.python.org/downloads/mac-osx/
I would write a Python program like this:
import base64
file = open('yourlog.log','r')
outputfile = open('result.log','wb')
for line in file:
decoded_line = base64.b64decode(line)
outputfile.write(decoded_line)
file.close()
outputfile.close()
print('Finished!')
First Question: Say I have a random Base64 encoded string. Is it possible to read each character on the string and convert each character to a frequency/sound and then same the string as a sound?
Second Question: Is it possible to do the opposite? How would I take a sound that was created above and convert back to a base64 string?
If someone clicked no the audio encrypted file it would just be noise.
Yes, it's possible and actually being used, for example here: http://arstechnica.com/tech-policy/2015/11/beware-of-ads-that-use-inaudible-sound-to-link-your-phone-tv-tablet-and-pc/
A Perl script for this is beyond a single answer, but there are many Sound-related modules on CPAN: http://search.cpan.org/search?query=sound&mode=all You'll probably need some time for research, but it should be more or less easy to build.
How to decrypt a string with unknown encryption algorithm?
There is a string:
5aaC5p6c5L2g5a+55oiR5Lus5Zyo5YGa55qE5LqL5oOF5pyJ5YW06Laj77yM5bm25LiU5a+5cmFpbHMv5YmN56uv5byA5Y+R5pyJ6Ieq5L+h77yM5qyi6L+O5Y+R6YCB6YKu5Lu25YiwZ2hvc3RtNTVAZ2l0Y2FmZS5jb23pooTnuqbkuqTmtYHml7bpl7TvvIznoa7lrprkuYvlkI7lj6/ku6Xnm7TmjqXmnaXliLDmiJHku6znmoTlt6XkvZzlrqTlj4Lop4LkuqTmtYHvvIzosKLosKIK
I don't know the encryption algorithm. How to decrypt it?
To analyze and solve this problem, what should I learn?
It's not an encryption algorithm, it's base64. You can tell because of the +s.
http://www.opinionatedgeek.com/dotnet/tools/base64decode/
Try running it through this page, it'll turn into this:
如果你对我们在做的事情有兴趣，并且对rails/前端开发有自信，欢迎发送邮件到ghostm55#gitcafe.com预约交流时间，确定之后可以直接来到我们的工作室参观交流，谢谢
NOTE: If it was actually encrypted and you actually had no clue what it was encrypted with, you would be screwed, because any good encryption algorithm turns the output into meaningless gibberish, unusable without the key. Base64 has no key, you can just reverse it the same way every time.
This string appears to be a Base64 encoded string.
The decoded value is: 如果你对我们在做的事情有兴趣，并且对rails/前端开发有自信，欢迎发送邮件到ghostm55#gitcafe.com预约交流时间，确定之后可以直接来到我们的工作室参观交流，谢谢
Well, the string is likely Base64 encoded. If you decode it, you should get an effectively random piece of binary data if its encrypted (EDIT: As others have shown, it isn't encrypted, but the following would still apply if it were)
By checking the length, you can determine the block-size of the cipher. If its not an even block size, it likely could be a stream cipher (or a block cipher operated in stream mode).
However, any more information will need to be gleamed from other sources - as the point of good encryption is to make the data truly opaque.
Its Base 64 encryption.The above code is translated as:
如果你对我们在做的事情有兴趣，并且对rails/前端开发有自信，欢迎发送邮件到ghostm55#gitcafe.com预约交流时间，确定之后可以直接来到我们的工作室参观交流，谢谢
"If you are doing things we are interested in, and on the rails / front-end developers are confident, please send e-mail to communicate ghostm55#gitcafe.com appointment time, after determining the direct exchange of visits to our studio, thank you"
I'm making a program that has a login. Is there any way to encrypt the normal password so that it can't be read in the data base? I've done a trick but I'm not content with it. What I did was to get the first, mid, and last char only and convert each char into ascii. Is there a way to convert all the text into ascii or something like md5/hash in php?
I'm really sorry about this thing, I haven't mentioned that my project is a VB6 project.
Don't use MD5 to store hashed passwords! See stuff like http://www.freerainbowtables.com/ for reasons why. MD5 is thoroughly broken... Check what you have available in VB6 (I'm hardly a VB6 guy ;-)) in the realm of cryptography. Something based on (salted) password-based encryption stuff is what you want, Google for "vb6 pbkdf2", I see a lot of hits there :)
I have been using a class by Phil Fresle for generating MD5 signatures for strings. You can copy and paste the source to create the class. To use it in your application I suggest storing the hash rather than the password. The class source code can be found here.
I'm working on implementing DSA digital signature algorithm. I understand the algorithm itself, one thing I don't really understand is how should my message look after it was signed?
For example, I have a text file that I'd like to sign and send to someone else. Where should I put the generated keys for verifying the signature, and how should I parse this message to verify the signature?
PKCS#7 is your friend.
Update: I forgot to mention, that CMS (Cryptographic Message Syntax) is an evolution of PKCS#7.
Eugene's link should answer your question. I will add one thing: Don't expect any actual security from your implementation of DSA. If you want the information secure, use an already-written DSA implementation. When not expertly written, crypto primitives can be terribly insecure.