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HS NTP is a software library in C (supplied with full source code) which implements the client side of Network Time Protocol (NTP) over UDP socket layer according to RFC1769 and RFC1305. HS NTP Library allows a user application to synchronise local system time to remote NTP server time. First user application calls HS NTP initialisation function supplying pointers to callback functions in user code for timer management and for reporting NTP events to user. To obtain time difference between local system and remote NTP server, the user application calls HsNtpGetTime function, specifying NTP server name or IP address and source UDP port to use. HS NTP library then resolves the server name, formats and sends NTP time request packet according to RFC1305 and RFC1769 standard. Once HS NTP has received NTP time reply from NTP server it analyses the reply and reports the resulting time difference to user application via callback function. The parameters to this event callback contain the offset value in seconds necessary to apply to local clock in order to synchronize it to the time at remote NTP server. Modular design makes it easy to port HS NTP protocol module to any environment. HS NTP internally at a lower layer interfaces to HS Sock library which provides UDP transport services. User application need not worry about Winsock - HS NTP does all transmission, reception and event handling over socket layer.

  

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cryptography library

 

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HS POP3 is a software library in C (supplied with full source code) which implements the client side of Post Office Protocol Version 3 (POP3) over TCP socket layer according to RFC 1939. Among other features, the library supports user authentication, reception of basic internet headers and text, message deletion and statistics First user application calls HS POP3 initialisation function supplying pointers to callback functions in user code for memory amd timer management and for reporting POP3 events to user. To receive email messages from any POP3 RFC1939 compliant server, the user application calls HsPop3GetMail function, specifying mail server name or IP address and login user name and password. HS POP3 library then resolves the server name, connects to it, receives and message scan list. according to RFC1939 standard. Once HS POP3 has a unique message ID from the server, it reports this message ID to user application via callback function. The user application returns a specific value if it wants to receive this message. At this point HS POP3 will request necessary amount of memory for the message and will receive complete message into the buffer. Once message is received, the user code is notified with a callback and a message structure, containing full message pointer, message length, start of text pointer, length of headers and separate parsed out header information: from field, date field, message id field and subject field. This process is repeated until all messages are received. HS POP3 library can also delete messages from server if this option is specified. HS POP3 Library incorporates the necessary state machine, transparency procedures, and server response processing required to comply to a simple and robust POP3 client implementation. Modular design makes it easy to port HS POP3 protocol module to any environment. HS POP3 internally at a lower layer interfaces to HS Sock library which provides TCP transport services.

HS NTP C Source Library: http://www.hillstone-software.com/hs_ntp_demo.exe

HS POP3 Library: http://www.hillstone-software.com/hs_pop3_demo.exe

 

LLCryptoLib is a .NET library which allows programmers to easily add encryption, integrity and authentication services to their software. It is compatible with MS .NET and Novell Mono environments. It also provides shredding methods. It offers both asymmetrical and symmetrical encryption classes and hashing functions for text and binary files plus full shredding capabilities. It also offers methods for digital certificates and public key management. It is free for non commercial uses. It is free for students and academic purposes. Enterprise or commercial licenses must be purchased (see enclosed licensing options). It is engineered to be easy to use and standard compliant, fully compatible with ASP.NET Web Applications and Visual C#, Visual Basic .NET, Managed C++ .NET Applications. LLCryptoLib can be linked to managed (.NET) and unmanaged (COM) projects. Hashing algorithms: * CRC32 * FCS16/32 * GOST * ADLER32 * HAVAL * MD2/4 * MD5 * SHA1 / 224 / 256 / 384 * TIGER * RIPEMD160 * WHIRLPOOL Encryption algorithms: * ROT13 * Playfair * PseudoDES * DES * Triple DES * Rijndael (AES) * CAST5 * ARC4 - up to 2048 bits * Blowfish - up to 448 bits * RSA Digital Certificates: * PEM * CER * PFX * X509 Text to binary conversions: * Plain text (UTF8) * Hexadecimal (with 4 styles) * Base64 Storage Shredding algorithms * US Department of Defense (DoD) * Guttman Simple * Navso P-5329-26 * German VSITR5 * HMG Infosec Standard 5 Library features: * .NET API Compliant (algorithms implements System.Security.Cryptography.SymmetricAlgorithm) * Asynchronous feedback on operations through delegates * Enum's based algorithm choice * MSDN Style documentation on both HTML and WinHelp formats LLCryptoLib is part of the popular Folder Crypt software by LittleLite. 

LLCryptoLib: http://www.littlelite.net/llcryptolib/sw/LLCryptoLib_19_2012_Academy.zip

Bytescout.PDF: http://www.bytescout.com/pad/bytescoutpdf.zip

Bytescout.PDF is a .NET library capable to create/modify existing/sign/fill/linearize/optimize PDF documents from .NET programming languages Visual Basic.NET, C#, ASP.NET Key features: * Full set of methods and properties (Bytescout.PDF namespace) to create documents (completely new documents or using existing PDF documents) with ability to draw on the page of existing PDF document; * Font embedding (Type1, TrueType) including Unicode support; * PNG, JPEG, TIFF, JBIG2, CCITT Fax images and image compression modes support; * Linearization support (PDF documents web optimization - documents are loaded faster); * PDF optimization support (internal structure of the document is optimized to reduce file size); * Security options (document permissions) and 40 bit, 128 bit and 128 AES encryption support; * Digital signature support including signing of existing documents and visible signatures; * Threads and beads support; * Built-in EMF to PDF conversion engine including support for EMF images produced by virtual EMF printers; * 40 bits, 128 bits, 128 bits AES security options, password protection options (demo); * Capable of removing protection, appending pages to the existing documents, changing security settings, drawing on existing PDF documents and much more * Ability to handle produced PDF document in memory without need for temporary files and provide on-the-fly generation directly into memory stream(requires additional Web License); * Ability to split, merge, extract pages from PDF document and append to an another document using pages manager class; * Embed attachments (from file, stream, buffer) into PDF documents; 

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