| [3993] | 1 | /* rc6 (TM)
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| 2 | * Unoptimized sample implementation of Ron Rivest's submission to the
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| 3 | * AES bakeoff.
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| 4 | *
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| 5 | * Salvo Salasio, 19 June 1998
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| 6 | *
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| 7 | * Intellectual property notes: The name of the algorithm (RC6) is
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| 8 | * trademarked; any property rights to the algorithm or the trademark
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| 9 | * should be discussed with discussed with the authors of the defining
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| 10 | * paper "The RC6(TM) Block Cipher": Ronald L. Rivest (MIT),
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| 11 | * M.J.B. Robshaw (RSA Labs), R. Sidney (RSA Labs), and Y.L. Yin (RSA Labs),
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| 12 | * distributed 18 June 1998 and available from the lead author's web site.
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| 13 | *
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| 14 | * This sample implementation is placed in the public domain by the author,
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| 15 | * Salvo Salasio. The ROTL and ROTR definitions were cribbed from RSA Labs'
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| 16 | * RC5 reference implementation.
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| 17 | */
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| 18 |
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| 19 | /* RC6 is parameterized for w-bit words, b bytes of key, and
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| 20 | * r rounds. The AES version of RC6 specifies b=16, 24, or 32;
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| 21 | * w=32; and r=20.
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| 22 | */
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| 23 |
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| [3999] | 24 | #define rc6keylen 43
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| [3993] | 25 |
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| 26 | typedef unsigned int RC6KEY[rc6keylen];
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| 27 |
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| 28 | /*
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| 29 | * K=plain key
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| 30 | * b=plain key len
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| 31 | * S=prepared key by setup
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| 32 | * pt=uncrypted data
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| 33 | * ct=crypted data
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| 34 | * block size is always 16bytes
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| 35 | */
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| 36 | void rc6_key_setup(unsigned char *K, int b, unsigned int *S);
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| 37 | void rc6_block_encrypt(unsigned int *pt, unsigned int *ct, unsigned int *S);
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| 38 | void rc6_block_decrypt(unsigned int *ct, unsigned int *pt, unsigned int *S);
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| 39 |
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