Network Security: Standards and Cryptography
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The absolute minimum that every software developer absolutely, positively must know about network data security.
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Network Security: Standards and Cryptography
- 1. Network Security: Standards and Cryptography Jack Davis
- 2. The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Network Data Security (No Excuses!)
- 3. Too Frequent “ Bank of America says at least 1.2 million federal employee credit card accounts may be exposed to theft or hacking.” Time, Feb 25, 2005 “ 40M credit cards hacked Breach at third party payment processor affects 22 million Visa cards and 14 million MasterCards.” CNN Money, July 27, 2005 “ Data Losses Hit Four More Another day, another security breach: In the last 48 hours, Visa, Wachovia, Equifax, and the U.S. Department of Agriculture have joined a growing list ….” June 22, 2006 http://www.privacyrights.org/ar/ChronDataBreaches.htm
- 13. Common Cryptographic Hash Algorithms MD, Message Digest SHA, Secure Hash Algorithm Hash Algorithm Hash Size bits (bytes) Date Published Collisions (Cracked) MD4 128 (16) 1990 RFC1186 MD5 128 (16) 1992 RFC1321 SHA-0 160 (20) 1993 SHA-1 160 (20) 1995 RFC3174 SHA-256 256 (32) 2002 RFC4634 SHA-512 512 (64) 2002 RFC4634
- 15. Symmetric-Key Algorithms DES, Data Encryption Standard Triple-DES, DES applied three times (key 168 bits = 3 x 56 bits) FIPS, Federal Information Processing Standard AES, Advanced Encryption Standard (more secure, 6x faster than Triple-DES) NSA rates AES-128 for “SECRET”, AES-192 and AES-256 for “TOP SECRET”. Encryption Algorithm Key Size bits (bytes) Date Published Date Withdrawn DES 56 (7) 1976 FIPS46 1999 Triple-DES 168 (21) 1999 FIPS46-3 2005 AES 128, 192, 256 2001 FIPS197
Notas del editor
- Under Windows in C#, the RSA andRSACryptoServiceProvider classes provide key-pair creation and RSA encryption/decryption functionality. Symmetric encryption is supported through the DES, TripleDES, AES classes In Windows, the “sn –k <filename>” can be used to create key pairs, or programmatically through the RSA and RSACryptoProvider classes.
- Under Windows in C#, the RSA andRSACryptoServiceProvider classes provide key-pair creation and RSA encryption/decryption functionality. Symmetric encryption is supported through the DES, TripleDES, AES classes In Windows, the “sn –k <filename>” can be used to create key pairs, or programmatically through the RSA and RSACryptoProvider classes.
- Under Windows in C#, the RSA andRSACryptoServiceProvider classes provide key-pair creation and RSA encryption/decryption functionality. Symmetric encryption is supported through the DES, TripleDES, AES classes In Windows, the “sn –k <filename>” can be used to create key pairs, or programmatically through the RSA and RSACryptoProvider classes.
- Under Windows in C#, the RSA andRSACryptoServiceProvider classes provide key-pair creation and RSA encryption/decryption functionality. Symmetric encryption is supported through the DES, TripleDES, AES classes In Windows, the “sn –k <filename>” can be used to create key pairs, or programmatically through the RSA and RSACryptoProvider classes.
- Under Windows in C#, the RSA andRSACryptoServiceProvider classes provide key-pair creation and RSA encryption/decryption functionality. Symmetric encryption is supported through the DES, TripleDES, AES classes In Windows, the “sn –k <filename>” can be used to create key pairs, or programmatically through the RSA and RSACryptoProvider classes.
- “ Shared-Key” aka “session-key” The use of symmetric together asymmetric encryption is beneficial since symmetric encryption being 1000+ times faster than asymmetric encryption.
- “ Shared-Key” aka “session-key” The use of symmetric together asymmetric encryption is beneficial since symmetric encryption being 1000+ times faster than asymmetric encryption.