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120 lines
4.1 KiB
Bash
120 lines
4.1 KiB
Bash
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#!/bin/sh
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# $OpenBSD: ed25519.sh,v 1.1 2023/01/15 23:05:32 djm Exp $
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# Placed in the Public Domain.
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#
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AUTHOR="supercop-20221122/crypto_sign/ed25519/ref/implementors"
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FILES="
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supercop-20221122/crypto_verify/32/ref/verify.c
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supercop-20221122/crypto_sign/ed25519/ref/fe25519.h
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supercop-20221122/crypto_sign/ed25519/ref/fe25519.c
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supercop-20221122/crypto_sign/ed25519/ref/sc25519.h
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supercop-20221122/crypto_sign/ed25519/ref/sc25519.c
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supercop-20221122/crypto_sign/ed25519/ref/ge25519.h
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supercop-20221122/crypto_sign/ed25519/ref/ge25519.c
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supercop-20221122/crypto_sign/ed25519/ref/keypair.c
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supercop-20221122/crypto_sign/ed25519/ref/sign.c
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supercop-20221122/crypto_sign/ed25519/ref/open.c
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"
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###
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DATA="supercop-20221122/crypto_sign/ed25519/ref/ge25519_base.data"
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set -e
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cd $1
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echo -n '/* $'
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echo 'OpenBSD: $ */'
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echo
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echo '/*'
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echo ' * Public Domain, Authors:'
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sed -e '/Alphabetical order:/d' -e 's/^/ * - /' < $AUTHOR
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echo ' */'
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echo
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echo '#include <string.h>'
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echo
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echo '#include "crypto_api.h"'
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echo
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# Map the types used in this code to the ones in crypto_api.h. We use #define
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# instead of typedef since some systems have existing intXX types and do not
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# permit multiple typedefs even if they do not conflict.
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for t in int8 uint8 int16 uint16 int32 uint32 int64 uint64; do
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echo "#define $t crypto_${t}"
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done
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echo
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for i in $FILES; do
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echo "/* from $i */"
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# Changes to all files:
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# - inline ge25519_base.data where it is included
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# - expand CRYPTO_NAMESPACE() namespacing define
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# - remove all includes, we inline everything required.
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# - make functions not required elsewhere static.
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# - rename the functions we do use.
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sed \
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-e "/#include \"ge25519_base.data\"/r $DATA" \
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-e "/#include/d" \
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-e "s/^void /static void /g" \
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-e 's/CRYPTO_NAMESPACE[(]\([a-zA-Z0-9_]*\)[)]/crypto_sign_ed25519_ref_\1/g' \
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$i | \
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case "$i" in
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*/crypto_verify/32/ref/verify.c)
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# rename crypto_verify() to the name that the ed25519 code expects.
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sed -e "/^#include.*/d" \
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-e "s/crypto_verify/crypto_verify_32/g" \
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-e "s/^int /static int /g"
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;;
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*/crypto_sign/ed25519/ref/sign.c)
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# rename signing function to the name OpenSSH expects
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sed -e "s/crypto_sign/crypto_sign_ed25519/g"
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;;
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*/crypto_sign/ed25519/ref/keypair.c)
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# rename key generation function to the name OpenSSH expects
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sed -e "s/crypto_sign_keypair/crypto_sign_ed25519_keypair/g"
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;;
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*/crypto_sign/ed25519/ref/open.c)
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# rename verification function to the name OpenSSH expects
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sed -e "s/crypto_sign_open/crypto_sign_ed25519_open/g"
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;;
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*/crypto_sign/ed25519/ref/fe25519.*)
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# avoid a couple of name collions with other files
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sed -e "s/reduce_add_sub/fe25519_reduce_add_sub/g" \
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-e "s/ equal[(]/ fe25519_equal(/g" \
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-e "s/^int /static int /g"
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;;
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*/crypto_sign/ed25519/ref/sc25519.h)
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# Lots of unused prototypes to remove
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sed -e "s/^int /static int /g" \
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-e '/shortsc25519_from16bytes/d' \
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-e '/sc25519_iszero_vartime/d' \
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-e '/sc25519_isshort_vartime/d' \
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-e '/sc25519_lt_vartime/d' \
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-e '/sc25519_sub_nored/d' \
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-e '/sc25519_mul_shortsc/d' \
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-e '/sc25519_from_shortsc/d' \
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-e '/sc25519_window5/d'
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;;
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*/crypto_sign/ed25519/ref/sc25519.c)
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# Lots of unused code to remove, some name collisions to avoid
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sed -e "s/reduce_add_sub/sc25519_reduce_add_sub/g" \
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-e "s/ equal[(]/ sc25519_equal(/g" \
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-e "s/^int /static int /g" \
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-e "s/m[[]/sc25519_m[/g" \
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-e "s/mu[[]/sc25519_mu[/g" \
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-e '/shortsc25519_from16bytes/,/^}$/d' \
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-e '/sc25519_iszero_vartime/,/^}$/d' \
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-e '/sc25519_isshort_vartime/,/^}$/d' \
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-e '/sc25519_lt_vartime/,/^}$/d' \
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-e '/sc25519_sub_nored/,/^}$/d' \
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-e '/sc25519_mul_shortsc/,/^}$/d' \
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-e '/sc25519_from_shortsc/,/^}$/d' \
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-e '/sc25519_window5/,/^}$/d'
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;;
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*/crypto_sign/ed25519/ref//ge25519.*)
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sed -e "s/^int /static int /g"
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;;
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# Default: pass through.
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*)
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cat
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;;
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esac | \
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sed -e 's/[ ]*$//'
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done
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