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Diffstat (limited to 'libs/nixio/axTLS/ssl/BigIntConfig.in')
-rw-r--r-- | libs/nixio/axTLS/ssl/BigIntConfig.in | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/libs/nixio/axTLS/ssl/BigIntConfig.in b/libs/nixio/axTLS/ssl/BigIntConfig.in deleted file mode 100644 index 04c7438c0..000000000 --- a/libs/nixio/axTLS/ssl/BigIntConfig.in +++ /dev/null @@ -1,132 +0,0 @@ -# -# For a description of the syntax of this configuration file, -# see scripts/config/Kconfig-language.txt -# - -menu "BigInt Options" - depends on !CONFIG_SSL_SKELETON_MODE - -choice - prompt "Reduction Algorithm" - default CONFIG_BIGINT_BARRETT - -config CONFIG_BIGINT_CLASSICAL - bool "Classical" - help - Classical uses standard division. It has no limitations and is - theoretically the slowest due to the divisions used. For this particular - implementation it is surprisingly quite fast. - -config CONFIG_BIGINT_MONTGOMERY - bool "Montgomery" - help - Montgomery uses simple addition and multiplication to achieve its - performance. In this implementation it is slower than classical, - and it has the limitation that 0 <= x, y < m, and so is not used - when CRT is active. - - This option will not be normally selected. - -config CONFIG_BIGINT_BARRETT - bool "Barrett" - help - Barrett performs expensive precomputation before reduction and partial - multiplies for computational speed. It can't be used with some of the - calculations when CRT is used, and so defaults to classical when this - occurs. - - It is about 40% faster than Classical/Montgomery with the expense of - about 2kB, and so this option is normally selected. - -endchoice - -config CONFIG_BIGINT_CRT - bool "Chinese Remainder Theorem (CRT)" - default y - help - Allow the Chinese Remainder Theorem (CRT) to be used. - - Uses a number of extra coefficients from the private key to improve the - performance of a decryption. This feature is one of the most - significant performance improvements (it reduces a decryption time by - over 3 times). - - This option should be selected. - -config CONFIG_BIGINT_KARATSUBA - bool "Karatsuba Multiplication" - default n - help - Allow Karasuba multiplication to be used. - - Uses 3 multiplications (plus a number of additions/subtractions) - instead of 4. Multiplications are O(N^2) but addition/subtraction - is O(N) hence for large numbers is beneficial. For this project, the - effect was only useful for 4096 bit keys. As these aren't likely to - be used, the feature is disabled by default. - - It costs about 2kB to enable it. - -config MUL_KARATSUBA_THRESH - int "Karatsuba Multiplication Theshold" - default 20 - depends on CONFIG_BIGINT_KARATSUBA - help - The minimum number of components needed before Karasuba muliplication - is used. - - This is very dependent on the speed/implementation of bi_add()/ - bi_subtract(). There is a bit of trial and error here and will be - at a different point for different architectures. - -config SQU_KARATSUBA_THRESH - int "Karatsuba Square Threshold" - default 40 - depends on CONFIG_BIGINT_KARATSUBA && CONFIG_BIGINT_SQUARE - help - The minimum number of components needed before Karatsuba squaring - is used. - - This is very dependent on the speed/implementation of bi_add()/ - bi_subtract(). There is a bit of trial and error here and will be - at a different point for different architectures. - -config CONFIG_BIGINT_SLIDING_WINDOW - bool "Sliding Window Exponentiation" - default y - help - Allow Sliding-Window Exponentiation to be used. - - Potentially processes more than 1 bit at a time when doing - exponentiation. The sliding-window technique reduces the number of - precomputations compared to other precomputed techniques. - - It results in a considerable performance improvement with it enabled - (it halves the decryption time) and so should be selected. - -config CONFIG_BIGINT_SQUARE - bool "Square Algorithm" - default y - help - Allow squaring to be used instead of a multiplication. - - Squaring is theoretically 50% faster than a standard multiply - (but is actually about 25% faster). - - It gives a 20% speed improvement and so should be selected. - -config CONFIG_BIGINT_CHECK_ON - bool "BigInt Integrity Checking" - default n if !CONFIG_DEBUG - default y if CONFIG_DEBUG - help - This is used when developing bigint algorithms. It performs a sanity - check on all operations at the expense of speed. - - This option is only selected when developing and should normally be - turned off. - -endmenu - - - |