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Results for "Author: fredrik qvarfort"

2002ASP #2105
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

2002ASP #2106
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

2002ASP #2107
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

2002C #10709
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

2002C #10710
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

2002C #10711
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

2002VB #19313
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

2002VB #19314
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

2002VB #19315
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

ASP_Volume2 #30754
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

ASP_Volume2 #31666
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

ASP_Volume2 #32142
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

ASP_Volume3 #47362
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

ASP_Volume3 #47363
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

ASP_Volume3 #47364
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

C_Volume2 #71816
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

C_Volume2 #72728
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

C_Volume2 #73204
Calculate Checksum (CRC32 and CRC16)

Yesterday, I was lookin' for some code to compute a CRC32 checksum value but could not find any fast working code here. So I made this class file that allows you to calculate real CRC32 checksums. I also needed *FAST* code so this uses assembler code that you can use without actually knowing any assembler. This code is able to compute 56 MB/s on a P3 600Mhz!!

Java_Volume1 #90360
Huffman Compression/Decompression

This is a Compression/Decompression routine using Huffman Encoding/Decoding, and works best on normal text files. The code is *highly* optimized, and to show how fast this is I can mention another code sample found here on planetsourcecode (from August 1st 2000) which also uses Huffman Encoding. That code took 127 seconds to compress a 1.8mb textfile, but with my code this takes less than 1 second!! (that's an approvement of 12700%!!). That other code was worth 7 excellent points, how many is this worth? ;)

Java_Volume1 #91272
SECURE encryption algorithms

This is a collection of SECURE encryption algorithms (BLOWFISH, TWOFISH, SKIPJACK, TEA, GOST, RC4 and DES). This post contains highly optimized code, if a similar post already exist here on PSC this one is at least a couple of 1000x faster!! This is not like everybody else's "unbreakable" code, these are standardized encryption algorithms where the only possible way to crack it is by brute-force. DES is probably the least secure one (it took 22 hours for a supercomputer + 100,000 computers to crack it (distributed.net)). And that's the least secure one. ;)

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