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Tham khảo tài liệu 'cracker handbook 1.0 part 396', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | crypto routines. The structure of it is based wholly on the existing digest md5 routines the main difference being that chksums are often used in an accumulator fashion effectively requiring one to set the seed and the digest algorithms don t do that. CRC32C is a 32-bit CRC variant used by the iSCSI protocol and in other drivers. iSCSI uses scatterlists so it was strongly suggested by the SCSI maintainers during reviews of Version 4 of the linux-iscsi driver that the code be added to the crypto routines which operate on scatterlists. Test routines have been added to tcrypt.c. The linux-iscsi project can be found on SourceForge http sourceforge.net projects linux-iscsi diff -urN --exclude .ko --exclude .mod. --exclude --exclude .o -exclude . --exclude .cmd --exclude drivers linux-2.6.1.orig crypto Kconfig linux crypto Kconfig linux-2.6.1.orig crypto KconfigFri Jan 9 01 00 03 2004 linux crypto KconfigMon Jan 12 10 33 59 2004 @@ -22 6 22 14 @@ help These are Null algorithms used by IPsec which do nothing. config CRYPTO_CRC32C tristate CRC32c CRC algorithm depends on CRYPTO help Castagnoli et al Cyclic Redundancy-Check Algorithm. Used by iSCSI for header and data digests and by others. See Castagnoli93. config CRYPTO_MD4 tristate MD4 digest algorithm depends on CRYPTO diff -urN --exclude .ko --exclude .mod. --exclude --exclude .o -exclude . --exclude .cmd --exclude drivers linux-2.6.1.orig crypto Makefile linux crypto Makefile linux-2.6.1.orig crypto MakefileFri Jan 9 01 00 04 2004 linux crypto MakefileMon Jan 12 10 33 59 2004 @@ -4 11 4 12 @@ proc-crypto- CONFIG_PROC_FS proc.o -obj- CONFIG_CRYPTO api.o cipher.o digest.o compress.o obj- CONFIG_CRYPTO api.o cipher.o digest.o compress.o chksum.o proc-crypto-y obj- CONFIG_CRYPTO_HMAC hmac.o obj- CONFIG_CRYPTO_NULL crypto_null.o obj- CONFIG_CRYPTO_CRC32C crc32c.o obj- CONFIG_CRYPTO_MD4 md4.o obj- CONFIG_CRYPTO_MD5 md5.o obj- CONFIG_CRYPTO_SHA1 sha1.o diff -urN --exclude .ko --exclude .mod. --exclude --exclude .o -exclude .