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foxjax
foxjax asked
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I have downloaded several blowfish components from torry with source code such as DCP, etc.

However i really would like just the blowfish source code only instead of it all being mixed together as is the case with these packages.

So what i would want would be the source code and example of encrypting/decrypting a string with it.

I am using delphi 2.
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Commented:
http://www.efg2.com/Lab/Library/Delphi/MathFunctions/Cryptography.htm

A lots of good links .

And look for 'How to encrypt a String' sample project on this page.

Author

Commented:
Thanks ginsonic.  I had already checked out all of the links on the page you first suggested but to no avail.  The other web site you listed gives the code in C for a DLL - both of which i am not very good at.

I am really just looking for a plain delphi code version of blowfish with no added extras.  I want to both study the code so i can learn from it and perhaps write a better version once i learn more.

Commented:
Then try http://www.multimania.com/sirius29/algos.html

A lots of algos , blowfish included ( 100% delphi code , I verify it )

Commented:
I think that Cipher is what you wish ( source code and demo )

This is the web description:

A Compendium of various strong Encryption Algorithm, includes:
40 Ciphers (IDEA, Blowfish, Twofish, DES, Square ...)
23 Hashs (MD4/5, SHA/1, RipeMD, Havel, Tiger ...)
5 Checksums (CRC32, CRC16-CCITT, CRC16-Standard ...)
6 Textformats (MIME Base 64, XX/UU Coding, RFC1760 Six Word ...)
2 Randoms (LFSR Linear Feedback Shift Register with variable Period upto 2^2032-1 ...)
with Ciphers can be encrypt in Modes CTS/CBC/CFB/OFB/ECB
Ciphers supports Message Authentication Codes in CBC-MAC/CFB-MAC/CTS-MAC
fast Implementation (i.e. Blowfish > 8Mb/sec, MD4 > 27Mb/sec)
full and easy objectorientated
High optimized Assembler Core
Designtime Components to managing Cipher- and Hashclasses
Message Authentication Codes for all Hashs (Internet RFC2104-HMAC ...)
Internet RFC2289/RFC1760/RFC2444 One Time Password Routines as Component
Self Test Support for all Cipher-, Hash- and Checksumclasses
multiple cascading (chanining) from all Cipher-, Hash-, Random- and Compressionclasses
all Cipher-, Hash-, Randomclasses can be encrypt, decrypt, scramble and wipe any Inputs as String, Stream, File or Buffer in multiple chaining modes
detailed and full DEMO, Docus for implemented RFC

Author

Commented:
Thanks Ginsonic, the routine at http://www.multimania.com/sirius29/algos.html is the type of thing i was looking for except that i cannot work out how to pass a string to it to encrypt and decrypt.  The txt file with the routine gives an example but not for passing a string.  If you know of how i can do this or know of a similar routine that will accept a string the points are your.

The other listings you gave are all mainly "packages" of encryption code which is not really what i am looking for - i just want the single item rather than thousands of lines of code to read through.

Thanks.

Commented:
Give me your address to send you a sample project .
I have an unit for DES and Blowfish , with good comment and full working sample for strings crypt/decrypt ( included text files ).

Author

Commented:
Thanks ginsonic.  The email address is foxjax@verballed.com - if the routines work then i shall award you the points and upload the units to a web page and place a link here for anyone else that buys this question in the future.

Commented:
Read your mail.

Author

Commented:
Got it Ginsonic - only i cannot work out from the code how to pass a string and a password so i can encrypt the string and then decrypt it.

Got any ideas on this one?

Commented:
What password ? The encryption key algorithm is in CipherBlock.pas .
 

Author

Commented:
sorry, but i am not sure how this one works.  I thought it would allow me to give it a password that i could pick and a string and it would do what it was supposed to do.  What is the point of having the key algorythm in the program - is that not less secure?

Commented:
I have some lines to encrypt/decrypt a string using a specified password . But isn't BlowFish . Interesting you ?

Commented:
If you still wish to use BlowFish then can use my codes for password ( crypt one ) and then crypt again with BlowFish ( crypt two ).

Author

Commented:
sorry for the delay ginsonic, i was unable to connect to EE for a while.

Yes, i am interested in the code - then i shall close this question and award the points to you with a grade A for all of your help.
Commented:
Take your mail

Author

Commented:
thanks ginsonic for all of your help.  

Commented:
Any time.

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