132 lines
4.7 KiB
Bash
Executable File
132 lines
4.7 KiB
Bash
Executable File
#!/bin/sh
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# Usage: ./generate.sh /path/to/ed448goldilocks-code
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#
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# Generate all files from ed448goldilocks branch 'master'
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# (available at <git://git.code.sf.net/p/ed448goldilocks/code>).
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#
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# Project is synced with upstream commit
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# '807a7e67decbf8ccc10be862cdf9ae03653ffe70'.
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#
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# Notes about transformations applied:
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#
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# * only a subset of library files are used, cryptonite needing only x448
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# and ed448. Some headers like point_255.h are still included but copied
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# empty, as the definitions are not necessary. Only the simplest
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# architectures arch_32 and arch_ref64 are used to get the best
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# compatibility and generality over performance.
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#
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# * substitutions are performed in order to add a cryptonite_ prefix
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# to all external symbols
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#
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# * code related to SHAKE is replaced by cryptonite code, referenced from
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# a custom shake.h. As a consequence, portable_endian.h is not needed.
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#
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# * aligned(32) attributes used for stack alignment are replaced by
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# aligned(16). This removes warnings on OpenBSD with GCC 4.2.1, and makes
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# sure we get at least 16-byte alignment. 32-byte alignment is necessary
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# only for AVX2 and arch_x86_64, which we don't have.
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#
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# * visibility("hidden") attributes are removed, as this is not supported
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# on Windows/MinGW, and we have name mangling instead
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#
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# * function posix_memalign is defined in order to avoid a warning on
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# Windows/MinGW. Hopefully it is not called. This definition is put
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# inside portable_endian.h because this file is already included.
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#
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# * files decaf.c and decaf_tables.c are compiled to a single object file
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# decaf_all.o to avoid link failure on OpenBSD with --strip-unneeded
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# and old versions of binutils (see #186)
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SRC_DIR="$1/src"
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DEST_DIR="`dirname "$0"`"/..
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ARCHITECTURES="arch_32 arch_ref64"
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if [ ! -d "$SRC_DIR" ]; then
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echo "$0: invalid source directory: $1" && exit 1
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fi
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convert() {
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local FILE_NAME="`basename "$1"`"
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local REPL
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if [ "$FILE_NAME" = word.h ]; then
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REPL='__attribute__((aligned(32)))'
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else
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REPL='__attribute__((aligned(16)))'
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fi
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sed <"$1" >"$2/$FILE_NAME" \
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-e 's/ __attribute((visibility("hidden")))//g' \
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-e 's/ __attribute__((visibility("hidden")))//g' \
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-e 's/ __attribute__ ((visibility ("hidden")))//g' \
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-e "s/__attribute__((aligned(32)))/$REPL/g" \
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-e 's/decaf_/cryptonite_decaf_/g' \
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-e 's/DECAF_/CRYPTONITE_DECAF_/g' \
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-e 's/gf_/cryptonite_gf_/g' \
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-e 's/keccakf/cryptonite_keccakf/g' \
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-e 's/NO_CONTEXT_POINTS_HERE/CRYPTONITE_NO_CONTEXT_POINTS_HERE/g' \
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-e 's/P25519_SQRT_MINUS_ONE/CRYPTONITE_P25519_SQRT_MINUS_ONE/g'
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}
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convert "$SRC_DIR"/utils.c "$DEST_DIR"
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mkdir -p "$DEST_DIR"/include
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convert "$SRC_DIR"/include/constant_time.h "$DEST_DIR"/include
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convert "$SRC_DIR"/include/field.h "$DEST_DIR"/include
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convert "$SRC_DIR"/include/word.h "$DEST_DIR"/include
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for ARCH in $ARCHITECTURES; do
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mkdir -p "$DEST_DIR"/include/$ARCH
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convert "$SRC_DIR"/include/$ARCH/arch_intrinsics.h "$DEST_DIR"/include/$ARCH
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done
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mkdir -p "$DEST_DIR"/include/decaf
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convert "$SRC_DIR"/GENERATED/include/decaf.h "$DEST_DIR"/include
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convert "$SRC_DIR"/GENERATED/include/decaf/common.h "$DEST_DIR"/include/decaf
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convert "$SRC_DIR"/GENERATED/include/decaf/ed448.h "$DEST_DIR"/include/decaf
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convert "$SRC_DIR"/GENERATED/include/decaf/point_448.h "$DEST_DIR"/include/decaf
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for CURVE in ed448goldilocks; do
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mkdir -p "$DEST_DIR"/$CURVE
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convert "$SRC_DIR"/GENERATED/c/$CURVE/decaf.c "$DEST_DIR"/$CURVE
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convert "$SRC_DIR"/GENERATED/c/$CURVE/decaf_tables.c "$DEST_DIR"/$CURVE
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convert "$SRC_DIR"/GENERATED/c/$CURVE/eddsa.c "$DEST_DIR"/$CURVE
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convert "$SRC_DIR"/GENERATED/c/$CURVE/scalar.c "$DEST_DIR"/$CURVE
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cat > "$DEST_DIR"/$CURVE/decaf_all.c <<EOF
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/* Combined to avoid link failure on OpenBSD with --strip-unneeded, see #186 */
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#include "decaf.c"
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#include "decaf_tables.c"
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EOF
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done
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for FIELD in p448; do
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mkdir -p "$DEST_DIR"/$FIELD
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convert "$SRC_DIR"/$FIELD/f_arithmetic.c "$DEST_DIR"/$FIELD
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convert "$SRC_DIR"/GENERATED/c/$FIELD/f_generic.c "$DEST_DIR"/$FIELD
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convert "$SRC_DIR"/GENERATED/c/$FIELD/f_field.h "$DEST_DIR"/$FIELD
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for ARCH in $ARCHITECTURES; do
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mkdir -p "$DEST_DIR"/$FIELD/$ARCH
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convert "$SRC_DIR"/$FIELD/$ARCH/f_impl.h "$DEST_DIR"/$FIELD/$ARCH
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convert "$SRC_DIR"/$FIELD/$ARCH/f_impl.c "$DEST_DIR"/$FIELD/$ARCH
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done
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done
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for FILE in point_255.h sha512.h; do
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cat > "$DEST_DIR"/include/decaf/$FILE <<EOF
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/* Not needed if 448-only */
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EOF
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done
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cat >"$DEST_DIR"/include/portable_endian.h <<EOF
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/* portable_endian.h not used */
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#if defined(__MINGW32__)
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// does not exist on MinGW, but unused anyway
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extern int posix_memalign(void **, size_t, size_t);
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#endif
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EOF
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