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Jeffrey Walton 2018-08-14 20:49:26 -04:00
parent 9d15a9ee16
commit 62e95313af
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1 changed files with 4 additions and 4 deletions
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8
adv-simd.h
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@ -16,7 +16,7 @@
// words, and one that operates on 1 SIMD words.
//
// The distinction between SIMD words versus cipher blocks is important
// because 64-bit ciphers use two cipher blocks for one SIMD word. For
// because 64-bit ciphers use one SIMD word for two cipher blocks. For
// example, AdvancedProcessBlocks64_6x2_ALTIVEC operates on 6 and 2 SIMD
// words, which is 12 and 4 cipher blocks. The function will do the right
// thing even if there is only one 64-bit block to encrypt.
@ -34,9 +34,9 @@
// * AdvancedProcessBlocks128_6x1_ALTIVEC
//
// If an arrangement ends in 2, like 6x2, then the template will handle the
// single block case by padding with 0's and using the two block function.
// This happens at most one time when processing multiple blocks. The extra
// processing of a zero block is trivial and worth the tradeoff.
// single block case by padding with 0's and using the two SIMD word
// function. This happens at most one time when processing multiple blocks.
// The extra processing of a zero block is trivial and worth the tradeoff.
//
// The MAYBE_CONST macro present on x86 is a SunCC workaround. Some versions
// of SunCC lose/drop the const-ness in the F1 and F4 functions. It eventually