Affordable, powerful, and easy to use .NET Encryption/Hashing/Compression Library. Encrypt sensitive information such as passwords, credit cards and social security numbers. Supports Rijndael (AES), DES, TripleDES, RC2, Blowfish, Twofish, Whirlpool, MD2, MD4, MD5, SHA1, SHA2, HAVAL, GOST, Ripend320, FCS16, FCS32, CRC32, Adler32, X509, UUencode, Base64, GZip, and Deflate.

Ссылка: http://www.kell..om/download/CRYPT-V1-SD/CRYPT-V1-SD.zip