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eliminated multiple of 16 check for AES

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orignal 2014-06-08 07:56:04 -04:00
parent eb44fdf7a8
commit a6cc2e647b
3 changed files with 7 additions and 14 deletions
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15
aes.cpp
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@ -197,12 +197,10 @@ namespace crypto
#endif
}
bool CBCEncryption::Encrypt (const uint8_t * in, std::size_t len, uint8_t * out)
void CBCEncryption::Encrypt (const uint8_t * in, std::size_t len, uint8_t * out)
{
div_t d = div (len, 16);
if (d.rem) return false; // len is not multipple of 16
Encrypt (d.quot, (const ChipherBlock *)in, (ChipherBlock *)out);
return true;
// len/16
Encrypt (len >> 4, (const ChipherBlock *)in, (ChipherBlock *)out);
}
void CBCEncryption::Encrypt (const uint8_t * in, uint8_t * out)
@ -260,12 +258,9 @@ namespace crypto
#endif
}
bool CBCDecryption::Decrypt (const uint8_t * in, std::size_t len, uint8_t * out)
void CBCDecryption::Decrypt (const uint8_t * in, std::size_t len, uint8_t * out)
{
div_t d = div (len, 16);
if (d.rem) return false; // len is not multiple of 16
Decrypt (d.quot, (const ChipherBlock *)in, (ChipherBlock *)out);
return true;
Decrypt (len >> 4, (const ChipherBlock *)in, (ChipherBlock *)out);
}
void CBCDecryption::Decrypt (const uint8_t * in, uint8_t * out)