39 lines
1.3 KiB
C
Executable File
39 lines
1.3 KiB
C
Executable File
/* rc6 (TM)
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* Unoptimized sample implementation of Ron Rivest's submission to the
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* AES bakeoff.
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*
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* Salvo Salasio, 19 June 1998
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*
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* Intellectual property notes: The name of the algorithm (RC6) is
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* trademarked; any property rights to the algorithm or the trademark
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* should be discussed with discussed with the authors of the defining
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* paper "The RC6(TM) Block Cipher": Ronald L. Rivest (MIT),
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* M.J.B. Robshaw (RSA Labs), R. Sidney (RSA Labs), and Y.L. Yin (RSA Labs),
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* distributed 18 June 1998 and available from the lead author's web site.
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*
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* This sample implementation is placed in the public domain by the author,
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* Salvo Salasio. The ROTL and ROTR definitions were cribbed from RSA Labs'
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* RC5 reference implementation.
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*/
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/* RC6 is parameterized for w-bit words, b bytes of key, and
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* r rounds. The AES version of RC6 specifies b=16, 24, or 32;
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* w=32; and r=20.
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*/
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#define rc6keylen 44
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typedef unsigned int RC6KEY[rc6keylen];
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/*
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* K=plain key
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* b=plain key len
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* S=prepared key by setup
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* pt=uncrypted data
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* ct=crypted data
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* block size is always 16bytes
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*/
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void rc6_key_setup(unsigned char *K, int b, RC6KEY S);
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void rc6_block_encrypt(unsigned int *pt, unsigned int *ct, int block_count, RC6KEY S);
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void rc6_block_decrypt(unsigned int *ct, unsigned int *pt, int block_count, RC6KEY S);
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