Cryptlib coding samples written in Delphi®

There are 10 little Delphi programs showing the functions of cryptlib and using DelphiCryptlib.pas. Nine programs are console applications, single source files with extention ".dpr", so they show the possibilities of cryptlib without the Windows and Delphi overhead. MD5 is a Windows Forms application.

To compile and run the source, you need:

1. Any 32-bit Windows version (XP, Vista, Windows 7, Windows 8, Windows 10)
   
2. Cryptlib V3.4.3
3. DelphiCryptlib.pas and Cryptlib.pas
4. Borland's/Embarcadero's Delphi (Delphi2009 / Delphi 10)

Some details about the samples:

• CertTest
  create public/private key pair and a selfsigned CA certificate for the key.
• HashTest
  compute hash on a given file content.
• ConvCryptTest
  encrypt a file using conventional encryption, algorithm AES (Rijndael)
  decrypt the encoded file again and compare with the input file.
• PKCCryptTest
  encrypt and decrypt a file using the public/private key pair from CertTest 
• PKCSignTest
  sign a file with the private key from CertTest and verify the signature using the certificate created with CertTest.
• StringIO
  compress and encode a string with function StringIO,  then decode and uncompress it again.  Compare the result with the input. The string used for encoding is a string containing the program source.
• CreateDB
  create 2 public/private key pairs and certificates signed with the CA certificate from CertTest. Store the certificates in an ODBC database (alias PublicKeys).
• CryptAllTest
  using the keys and certificates created by CreateDB do:
  sign, compress and encode a file, 
  then decode, uncompress it again and check the signature. 
  Compare the result with the input file.
• CryptAllStringTest
  using the keys and certificates created by CreateDB do:
  Sign, compress and encode a string with function StringIO,  then decode, uncompress it again and check the signature.  Compare the result with the input. The string used for encoding is a string containing the program source.
  This example is almost the same as CryptAllTest, but uses strings instead of streams.
• MD5
  utility with Windows GUI for hashcode creation and verifying. The Program works with the unix style files MD5SUMS containing MD5 hash and filenames.
  

As you can see from the comments above, you must call CertTest first and call CreateDB before using CryptAllTest.

Download:

And you know, if you download the source, you do it on your own risk. I can't give you any support and any warranties are explicitly disclaimed.

(*.dpr = Delphi project files)