Project 1999 - how to beat rc4 encryption

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- - how to beat rc4 encryption (/forums/showthread.php?t=146002)

how to beat rc4 encryption

Hey Boss. I've always hated you. I quit. Sincerely, Bob

Plaintext
-------------
0000000: 48 65 79 20 42 6f 73 73 2e 20 49 27 76 65 20 61 Hey Boss. I've a
0000010: 6c 77 61 79 73 20 68 61 74 65 64 20 79 6f 75 2e lways hated you.
0000020: 20 49 20 71 75 69 74 2e 20 53 69 6e 63 65 72 65 I quit. Sincere
0000030: 6c 79 2c 20 42 6f 62 0a ly, Bob.

Ciphertext
-------------
0000000: 78 b9 50 ef b1 81 28 e0 d4 38 05 d9 35 6e fe 43 x.P...(..8..5n.C
0000010: bc cc 95 8c d8 73 50 b0 7c 06 03 91 c6 5e 2d 5a .....sP.|....^-Z
0000020: b5 21 6a c5 3a 9b cf 4e 1f 84 d1 e2 d6 4a 32 76 .!j.:..N.....J2v
0000030: 29 00 57 7d 25 61 6e 8f ).W}%an.

68 61 74

71 75 69 74

48 65 79 20 42 6f 73 73 2e 20 49 5c 27 76 65 20 61 6c 77 61 79 73 20 68 61 74 65 64 20 79 6f 75 2e 20 49 20 71 75 69 74 2e 20 53 69 6e 63 65 72 65 6c 79 2c 20 42 6f 62

78 b9 50 ef b1 81 28 e0 d4 38 05 d9 35 6e fe 43 bc cc 95 8c d8 73 50 b4 72 04 03 91 c6 5e 2d 5a b5 21 6a c5 38 9a c7 43 1f 84 d1 e2 d6 4a 32 76 29 00 57 7d 25 61 6e 8f

101100000111110000000110
011010000110000101110100

110110000001110101110010

1110001011101010110100101110100
0111010100110111100111101001110

1001011111011101010011000111010

4BEEA63A
73746179

6c6f76
D81D72

Hey Boss. I've always loved you. I stay. Sincerely, Bob

In cryptography, RC4 (also known as ARC4 or ARCFOUR meaning Alleged RC4, see below) is the most widely used software stream cipher

It sux... looks incredibly weak. Might as well use rot13

man unless youre running the revolution, whats the point of this? some ben franklin shit.

Relevant?

http://redmondmag.com/articles/2013/...ncryption.aspx

If you're going to post this sort of shit, you could at least attempt to explain the steps.

Oh look h00t trying to make it look like he is not an entry level code monkey. Keep it up owl-dicker

Hi guys!

I'm a computer programmer too!

I made my own website
<img src="http://www.swish.com/swish.gif">

Quote:

Originally Posted by Bardalicious (Post 1398404)

Relevant?

http://redmondmag.com/articles/2013/...ncryption.aspx

If you're going to post this sort of shit, you could at least attempt to explain the steps.

Quote:

Originally Posted by r00t (Post 1398230)

Hey Boss. I've always hated you. I quit. Sincerely, Bob

Plaintext
-------------
0000000: 48 65 79 20 42 6f 73 73 2e 20 49 27 76 65 20 61 Hey Boss. I've a
0000010: 6c 77 61 79 73 20 68 61 74 65 64 20 79 6f 75 2e lways hated you.
0000020: 20 49 20 71 75 69 74 2e 20 53 69 6e 63 65 72 65 I quit. Sincere
0000030: 6c 79 2c 20 42 6f 62 0a ly, Bob.

Ciphertext
-------------
0000000: 78 b9 50 ef b1 81 28 e0 d4 38 05 d9 35 6e fe 43 x.P...(..8..5n.C
0000010: bc cc 95 8c d8 73 50 b0 7c 06 03 91 c6 5e 2d 5a .....sP.|....^-Z
0000020: b5 21 6a c5 3a 9b cf 4e 1f 84 d1 e2 d6 4a 32 76 .!j.:..N.....J2v
0000030: 29 00 57 7d 25 61 6e 8f ).W}%an.

68 61 74 <--- h a t

71 75 69 74 <--- q u i t

48 65 79 20 42 6f 73 73 2e 20 49 5c 27 76 65 20 61 6c 77 61 79 73 20 68 61 74 65 64 20 79 6f 75 2e 20 49 20 71 75 69 74 2e 20 53 69 6e 63 65 72 65 6c 79 2c 20 42 6f 62

78 b9 50 ef b1 81 28 e0 d4 38 05 d9 35 6e fe 43 bc cc 95 8c d8 73 50 b0 7c 06 03 91 c6 5e 2d 5a b5 21 6a c5 3a 9b cf 4e 1f 84 d1 e2 d6 4a 32 76 29 00 57 7d 25 61 6e 8f

101100000111110000000110
011010000110000101110100

110110000001110101110010 <--------- xor = key for hat

1110001011101010110100101110100
0111010100110111100111101001110

1001011111011101010011000111010 <------ xor = key for quit

4BEEA63A
73746179 <v---- apply substitution

6c6f76
D81D72

78 b9 50 ef b1 81 28 e0 d4 38 05 d9 35 6e fe 43 bc cc 95 8c d8 73 50 b4 72 04 03 91 c6 5e 2d 5a b5 21 6a c5 38 9a c7 43 1f 84 d1 e2 d6 4a 32 76 29 00 57 7d 25 61 6e 8f

Hey Boss. I've always loved you. I stay. Sincerely, Bob